CN104881152A - Transmitter and Transmitting Method Thereof - Google Patents

Abstract

The present invention relates to a transmitter and a transmitting method thereof, wherein the transmitter comprises a pen tip segment, wherein the transmitter is used to generate a first signal according to a force level corresponding to the pen tip segment, and to transmit an electrical signal including the first signal through the pen tip segment, wherein an attribute of the electrical signal corresponds to the force level.

Description

The sender and its sending method

technical field

The present invention relates to a transmitter, in particular to a transmitter that can send out electrical signals to indicate the degree of force without measuring the degree of force and its signaling method.

Background technique

Touch panel or touch screen is an important modern human-machine interface. In addition to detecting approaching or touching (collectively referred to as proximity) human body, touch panel is also used to detect approaching pen-like objects or touch The nib of the pen is used to facilitate the user to more precisely control the trajectory of the pen nib touch.

The stylus can use the tip of the stylus to actively send out electrical signals, which is referred to as an active stylus in this article. When the pen tip is close to the touch panel, the electrodes on the touch panel are affected by the electrical signal and have an electromagnetic response. By detecting the electromagnetic response corresponding to the above electrical signal, it is possible to detect that there is a pen-like object approaching the sensor. electrode, and know the relative position of the pen tip and the touch panel.

The conventional active stylus includes a wired active stylus and a wireless active stylus. A wired active stylus can directly obtain power from the touch panel through a connection wire connected to the touch panel, or can transmit a signal to the touch panel through the connection wire, such as a signal indicating the pressure on the pen tip. The biggest disadvantage of the wired active stylus is that it is inconvenient to use due to the obstruction of the connecting wire. However, the wireless active stylus must solve the synchronization problem between the wired active stylus and the controller that detects the active stylus, which does not exist between the wired active stylus and the controller.

In addition, a difference between the active stylus and the passive stylus is that the active stylus can be added with pressure sensing. The pressure device inside the active stylus conveys the degree of force on the pen tip and detects the force of the active stylus. The controller or the host can obtain the force information of the pen tip of the active stylus. However, how to provide the information of the force on the pen tip to the controller that detects the active stylus is another problem that must be solved in this technical field.

Traditionally, it is necessary to add a circuit for measuring force information on the active stylus, such as an analog-to-digital converter and related circuits, and then use the controller on the stylus to convert the digital signal indicating the degree of force. Further processing, for example, can be through wireless communication, but it will increase the cost and power consumption of wireless communication. The controller or host that detects the active stylus must also have such wireless communication capabilities, which increases the complexity of the system. In addition, the digital information of the force on the pen tip can be converted into an analog signal to represent it, but it may be misjudged due to changes in temperature or humidity, distance between the pen and the touch panel, and noise interference.

Accordingly, there is an urgent need for an active stylus that can actively and accurately send electrical signals under pressure, which can send out electrical signals to indicate the degree of force without measuring the degree of force.

Contents of the invention

The purpose of the present invention is to provide an active stylus that can actively and accurately send out electrical signals under pressure, which can send out electrical signals to indicate the degree of force without measuring the degree of force.

The purpose of the present invention is achieved by adopting the following technical solutions. The present invention provides a transmitter, the transmitter includes a nib section, wherein the transmitter is used to generate a first signal according to a degree of force corresponding to the nib section, and send a signal including the first signal through the nib section. An electrical signal of a signal, a property of the electrical signal corresponding to the magnitude of the force.

The object of the present invention can also be further realized by adopting the following technical measures.

In the aforementioned transmitter, the electrical signal and the first signal are analog signals.

In the aforementioned transmitter, the attribute is an intensity ratio value of the first signal and a second signal among the electrical signals.

In the aforementioned transmitter, the first signal is a signal of a first frequency group among the electrical signals, and the second signal is a signal of a second frequency group among the electrical signals.

The aforementioned transmitter further includes a first element and a second element, wherein the first element is used to generate the first signal according to the force level, and the second element is used to generate the second signal.

The aforementioned transmitter further includes an amplifier for respectively receiving the first signal and the second signal output by the first component and the second component, amplifying and outputting the electrical signal to the pen tip.

The aforementioned transmitter further includes: a first amplifier for receiving and amplifying an output signal of a first signal source to the first element; and a second amplifier for receiving and amplifying an output signal of a second signal source to the first element.

In the aforementioned transmitter, the first signal is the electrical signal within a first time period, and the second signal is the electrical signal within a second time period.

In the aforementioned transmitter, the first signal and the second signal have the same frequency group.

The aforementioned transmitter further includes a first element and a second element, wherein the first element is used to generate the first signal according to the force level, and the second element is used to generate the second signal.

The aforementioned transmitter further includes an amplifier for respectively receiving the first signal and the second signal output by the first component and the second component, amplifying and outputting the electrical signal to the pen tip.

The purpose of the present invention is achieved by adopting the following technical solutions. The present invention provides a signaling method of a transmitter, wherein the transmitter includes a nib section, the signaling method includes: generating a first signal according to a force degree corresponding to the nib section; and passing the nib The segment emits an electrical signal including the first signal, and a property of the electrical signal corresponds to the force level.

The object of the present invention can also be further realized by adopting the following technical measures.

In the aforementioned signaling method, wherein the electrical signal and the first signal are analog signals.

In the aforementioned signaling method, wherein the attribute is an intensity ratio value of the first signal and a second signal among the electrical signals.

The aforementioned signaling method, wherein the first signal is a signal of a first frequency group among the electrical signals, and the second signal is a signal of a second frequency group among the electrical signals.

The aforementioned signaling method, wherein the transmitter further includes a first component and a second component, wherein the first component is used to generate the first signal according to the degree of force, and the second component is used to generate the first signal Two signals.

The aforementioned signaling method, wherein the first signal is the electrical signal within a first time period, and the second signal is the electrical signal within a second time period.

In the aforementioned signaling method, wherein the first signal and the second signal have the same frequency group.

The aforementioned signaling method, wherein the transmitter further includes a first component and a second component, wherein the first component is used to generate the first signal according to the degree of force, and the second component is used to generate the first signal Two signals.

One of the beneficial effects of the present invention is to provide an active stylus that can actively and accurately send electrical signals under pressure, and can send out electrical signals to indicate the degree of force without measuring the degree of force.

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the following preferred embodiments are specifically cited, and in conjunction with the accompanying drawings, the detailed description is as follows.

Description of drawings

FIG. 1 is a schematic diagram of a touch control system according to an embodiment of the invention.

FIG. 2A is a schematic diagram of the interior of a transmitter according to an embodiment of the invention.

FIG. 2B is a schematic diagram of the interior of a transmitter according to an embodiment of the invention.

FIG. 2C is a schematic diagram of the interior of a transmitter according to an embodiment of the invention.

FIG. 2D and FIG. 2E are two circuit analysis diagrams of the embodiment in FIG. 2A .

FIG. 2F is a schematic diagram of the interior of a transmitter according to an embodiment of the present invention.

FIG. 3 is a schematic diagram of the interior of a transmitter according to an embodiment of the present invention.

FIG. 4A is a schematic diagram of the inside of a transmitter according to an embodiment of the invention.

FIG. 4B is a schematic diagram of the inside of a transmitter according to an embodiment of the invention.

FIG. 5 is a schematic diagram of the interior of a transmitter according to an embodiment of the present invention.

FIG. 6 is a flow diagram of a method for a touch device to determine a sensing value of a transmitter or a tip of an active stylus according to an embodiment of the present invention.

FIG. 7A is a schematic diagram of the interior of a transmitter according to an embodiment of the present invention.

FIG. 7B is a schematic diagram of the inside of a transmitter according to an embodiment of the present invention.

FIG. 7C is a schematic diagram of the interior of a transmitter according to an embodiment of the present invention.

FIG. 7D is a schematic diagram of the interior of a transmitter according to an embodiment of the present invention.

FIG. 8 is a schematic flowchart of a method for a touch device to determine a sensing value of a pen tip of a transmitter according to an embodiment of the present invention.

FIG. 9A is a timing diagram of signal modulation of a transmitter according to an embodiment of the present invention.

FIG. 9B is a timing diagram of signal modulation of a transmitter according to an embodiment of the present invention.

FIG. 9C is a timing diagram of signal modulation of a transmitter according to an embodiment of the present invention.

FIG. 9D is a timing diagram of signal modulation of a transmitter according to an embodiment of the present invention.

FIG. 9E is a timing diagram of signal modulation of the transmitter according to an embodiment of the present invention.

FIG. 9F is a timing diagram of signal modulation of a transmitter according to an embodiment of the present invention.

Fig. 10 is a schematic diagram of noise propagation according to an embodiment of the present invention.

Fig. 11 is a schematic structural diagram of a first capacitor according to another embodiment of the present invention.

FIG. 12 is a simplified representation of the embodiment shown in FIG. 11. FIG.

FIG. 13 is a schematic diagram of a modification of the embodiment shown in FIG. 12 .

FIG. 14 is a schematic diagram of a variation of the embodiment shown in FIG. 13 .

FIG. 15 is a schematic diagram of a modification of the embodiment shown in FIG. 14 .

Figure 16A is a schematic diagram according to an embodiment of the present invention.

Fig. 16B is a schematic diagram of a variation of the embodiment shown in Fig. 16A.

17A and 17B are structural schematic diagrams of the first capacitor and the second capacitor according to the present invention.

FIG. 18 is a schematic diagram of a variation of the embodiment shown in FIG. 11 .

FIG. 19A is an exploded schematic diagram of the center section of the force sensing capacitor and its structure of the transmitter.

FIG. 19B is a schematic cross-sectional view of the structure shown in FIG. 19A after assembly.

FIG. 19C is another schematic cross-sectional view after the structure shown in FIG. 19A is assembled.

FIG. 19D is an exploded schematic diagram of a central section of a force sensing capacitor and its structure of a transmitter according to an embodiment of the present invention.

FIG. 19E is an exploded schematic diagram of a central section of a force sensing capacitor and its structure of a transmitter according to an embodiment of the present invention.

20( a ), FIG. 20( b ), FIG. 20( c ) and FIG. 20( d ) are schematic cross-sectional views of the contact surface of the compressible conductor and the insulating film in FIG. 19A .

21 is a schematic diagram of a pressure sensor according to an embodiment of the present invention.

22 is a schematic diagram of a pressure sensor according to an embodiment of the present invention.

23A and 23B are structural schematic diagrams of a simple switch according to an embodiment of the present invention.

24A and 24B are structural schematic diagrams of a simple switch according to an embodiment of the present invention.

Fig. 25 is a schematic diagram of inferring the position of the pen tip provided by the present invention.

Fig. 26 is a schematic diagram of calculating an inclination angle according to an embodiment of the present invention.

FIG. 27 is a schematic diagram showing an embodiment of an interface responding to strokes of the aforementioned tilt angle and/or pressure.

FIG. 28( a ) and FIG. 28( b ) are schematic diagrams of another embodiment in which the display interface responds to the strokes of the aforementioned inclination angle and/or pressure.

FIG. 29 is a block schematic diagram of a system for detecting lighthouse signals according to an embodiment of the present invention.

[Description of main component symbols]

100: Touch system 110: Transmitter

120: Touch panel 121: First electrode

122: Second electrode 130: Touch processing device

140: host 210: signal source

211: The first signal source 212: The second signal source

215: signal switch 221: first component

222: Second component 230: Pen tip section

240: amplifier 241: first amplifier

242: Second amplifier 321: First capacitor

322: Second capacitor 441: Eraser capacitor

442: pen holder capacitor 523: ring capacitor

550: Ring electrode 551: Ring electrode wire

610～660: Step 714: Single signal source

760: Control unit 770: Transmitter wireless communication unit

771: Transmitter wired communication unit 780: Host wireless communication unit

781: Host wired communication unit 810～860: Steps

1110: First metal plate 1110A: First metal plate A

1110B: first metal plate B 1120: second metal plate

1120A: second metal plate A 1120B: second metal plate B

1130: The third metal plate 1130A: The third metal plate A

1130B: third metal plate B 1140: lifting element or ramp device

1150: Supporting elements 1970: Movable elements

1971: Front movable element 1972: Rear movable element

1973: Insulating films 1974: Compressible conductors

1975: Conductor base 1976: Base wire

1977: Moving element lead 1978: Elastic element

1979: Compressible insulating materials 1980: Housings

1990: Printed circuit boards 2110: Pressure sensors

2120: Control unit 2210: Pressure sensor

2220: Control unit 2610～2650: Steps

2900: Detection Lighthouse Signaling System 2910: Receiving Electrode

2920: Detection module 2921: Analog front end

2922: Comparator 2930: Demodulator

Sw1～Sw6: switch SWB: switch

SWE: switch

Detailed ways

The present invention will be described in detail in some embodiments as follows. However, except for the disclosed embodiments, the scope of the present invention is not limited by these embodiments, and the scope of the subsequent patent applications shall prevail. In order to provide a clearer description and enable ordinary people in the art to understand the content of the invention, the various parts in the illustrations are not drawn according to their relative sizes, and the proportions of certain dimensions or other relative dimensions may be highlighted It appears exaggerated, and irrelevant details are not fully drawn in order to simplify the diagram.

Please refer to FIG. 1 , which is a schematic diagram of a touch control system 100 according to an embodiment of the present invention. The touch system 100 includes at least one transmitter 110 , a touch panel 120 , a touch processing device 130 and a host 140 . In this embodiment, the transmitter 110 is taken as an example of an active stylus that can actively send out electric signals, and the actual implementation is not limited thereto. The touch control system 100 may include multiple transmitters 110 . The above-mentioned touch panel 120 is formed on the substrate, and the touch panel 120 may be a touch screen, and the form of the touch panel 120 is not limited in the present invention.

In one embodiment, the touch area of the touch panel 120 includes a plurality of first electrodes 121 and a plurality of second electrodes 122 , and a plurality of capacitive coupling sensing points are formed at the overlap of the two electrodes. The first electrodes 121 and the second electrodes 122 are respectively connected to the touch processing device 130 . In mutual capacitance detection mode, the first electrode 121 may be called a first conductive strip or a driving electrode, and the second electrode 122 may be called a second conductive strip or a sensing electrode. The touch processing device 130 can provide a driving voltage (the voltage of a driving signal) to the first electrodes 121 and measure the signal changes of the second electrodes 122 to know that there is an external conductive object approaching or touching (referred to as proximity). ) the touch panel 120. Those skilled in the art can understand that the above-mentioned touch processing device 130 can use mutual capacitance or self-capacitance to detect proximity events and proximity objects, which will not be described in detail here. In addition to mutual capacitance or self-capacitance detection, the touch processing device 130 can also detect the electrical signal sent by the transmitter 110, and then detect the relative relationship between the transmitter 110 and the touch panel 120. Location. In one embodiment, the signal changes of the first electrode 121 and the second electrode 122 are respectively measured to detect the signal of the transmitter 110 , thereby detecting the relative position of the transmitter 110 and the touch panel 120 . Since the signal from the transmitter 110 and the driving signal from the mutual capacitance or self-capacitance have different frequencies and are not mutually resonant waves, the touch processing device 130 can distinguish the signal from the transmitter 110 from the mutual capacitance or self-capacitance. self-capacitance signal. In another embodiment, the touch panel 120 may be a surface capacitive touch panel, with one electrode at each of the four corners or four sides, and the touch processing device 130 measures the signal changes of the four electrodes separately or simultaneously to obtain Relative positions of the transmitter 110 and the touch panel 120 are detected.

Also included in FIG. 1 is a host 140, which may be a central processing unit, or a main processor in an embedded system, or other forms of computers. In one embodiment, the touch control system 100 may be a tablet computer, and the host 140 may be a central processing unit executing an operation program of the tablet computer. For example, the tablet computer executes the Android operating system, and the host 140 is an ARM processor executing the Android operating system. The present invention does not limit the form of information transmitted between the host 140 and the touch processing device 130 , as long as the transmitted information is related to the proximity event occurring on the touch panel 120 .

Since the electrical signal needs to be actively sent, the transmitter 110 or the active stylus needs power supply to send the energy required for the electrical signal. In an embodiment, the power source of the transmitter 110 may be a battery, especially a rechargeable battery. In another embodiment, the electrical energy source of the pen-like object can be a capacitor, especially a super capacitor (Ultra-capacitor or Super-capacitor), such as an electric double layer capacitor (EDLC, Electric l DoubleLayered Capacitor), virtual capacitor (Pseudocapacitor), and hybrid capacitor (hybrid capacitor) three types of supercapacitors. The charging time of the supercapacitor is on the order of seconds, and in the embodiment of the present invention, the discharging time of the supercapacitor is on the order of hours. In other words, the active pen can be used for a long time only after charging for a short time.

In one embodiment, the touch panel 120 sends out a beacon signal periodically. When the transmitter 110 or the pen tip of the stylus is close to the touch panel 120, the transmitter 110 can sense the lighthouse signal through the pen tip, and then start to send out electrical signals for a period of time for the touch panel 120 to detect. use. In this way, the transmitter 110 may stop sending the electrical signal when the lighthouse signal is not detected, by prolonging the use time of the power supply of the transmitter 110 .

The lighthouse signal mentioned above can be sent out by using a plurality of first electrodes 121 and/or second electrodes 122 . In one embodiment, when the first electrode 121 is used to send a driving signal for mutual capacitance touch detection, the frequency of the driving signal is different from that of the lighthouse signal, and they are not the resonant wave of each other. Therefore, the lighthouse signal can be sent out simultaneously during the period of sending out the driving signal, that is, mutual capacitance touch detection and electric signal detection can be performed at the same time. In another embodiment, the driving signal and the lighthouse signal can be sent out in turn, that is, mutual capacitance touch detection and electric signal detection are performed time-sharingly, and the frequencies of the driving signal and the lighthouse signal can be the same or different.

In one embodiment, in order to enable the transmitter 110 to detect the lighthouse signal even at a distance from the touch panel 120 , the touch processing device 130 can make all the first electrodes 121 and the touch panel 120 on the touch panel 120 The second electrodes 122 send driving signals at the same time, so that the sum of the signal strengths sent by the touch panel 120 is the maximum.

Please refer to FIG. 2A , which is a schematic diagram of the interior of the transmitter 110 according to an embodiment of the present invention. The transmitter 110 includes a first signal source 211 , a second signal source 212 , a first element 221 with a first impedance Z1 , a second element 222 with a second impedance Z2 , and a tip section 230 . Wherein, the first signal sent by the first signal source 211 is transmitted to the touch panel 120 after passing through the first element 221 and the tip section 230 . Similarly, the second signal sent by the second signal source 212 is transmitted to the touch panel 120 after passing through the second element 222 and the tip section 230 .

In one embodiment, the first signal is a signal including a first frequency f1, and the second signal is a signal including a second frequency f2. The first frequency f1 and the second frequency f2 may be square wave signals, sine wave signals, or signals after pulse width modulation (Pulse Width Modulation). In one embodiment, the first frequency f1 is different from the frequency of the lighthouse signal and the frequency of the driving signal, and also different from the resonant frequency between the frequency of the lighthouse signal and the frequency of the driving signal. The second frequency f2 is different from the first frequency f1, the frequency of the lighthouse signal and the frequency of the driving signal, and also different from the first frequency f1, the resonant frequency of the lighthouse frequency signal and the signal of the driving frequency.

The signals of the two frequencies are respectively mixed by the first element 221 having the first impedance Z1 and the second element 222 having the second impedance Z2 , and fed into the tip section 230 . The first element 221 and the second element 222 mentioned above may be resistance elements, inductance elements, capacitance elements (such as solid capacitors) or impedances caused by any combination thereof. In the embodiment shown in FIG. 2A, the second impedance Z2 may be fixed, and the first impedance Z1 may be variable, and corresponds to the variation of a certain sensor.

In another embodiment, both the first impedance Z1 and the second impedance Z2 are variable, and the ratio between them corresponds to the variation of a certain sensor. In an embodiment, the sensor may be a retractable elastic pen tip, and the above-mentioned first impedance Z1 may change corresponding to the stroke or force of the elastic pen tip. In some examples, the above-mentioned first impedance Z1 linearly corresponds to the change of the physical quantity of the sensor. But in another example, the above-mentioned first impedance Z1 is nonlinearly corresponding to the change of the physical quantity of the sensor.

The above-mentioned first component 221 and the second component 222 may be different electronic components. For example, the first element 221 is a resistor, and the second element 222 is a capacitor, and vice versa. Another example is that the first element 221 is a resistor, and the second element 222 is an inductor, and vice versa. For another example, the first element 221 is an inductor, and the second element 222 is a capacitor, and vice versa. At least one of the first impedance Z1 and the second impedance Z2 is variable, such as a variable resistance resistor, a variable capacitance capacitor, or a variable inductance inductor. When one of the above-mentioned first impedance Z1 and second impedance Z2 is invariable, it can be set with existing electronic components, such as a general fixed resistance resistance element, a fixed capacitance capacitance element or a fixed inductance value inductive components.

In one embodiment, the first element 221 can be a force sensing resistor (FSR, force sensing resistor), the resistance of which can change predictably according to the applied force, and the second element 222 can be a fixed resistor. In another embodiment, the first element 221 may be a variable resistor. Therefore, under other conditions being the same, among the electrical signals sent by the pen tip 230, the ratio of the strength M1 of the signal part of the first frequency f1 to the strength M2 of the signal part of the second frequency f2 will be equal to the first impedance Z1 It is inversely proportional to the ratio of the second impedance Z2. In other words, M1/M2=k(Z2/Z1). For the circuit analysis of this part, please refer to the subsequent descriptions of FIG. 2D and FIG. 2E.

Therefore, when the transmitter 110 floats above the touch panel 120, the pen tip section 230 has not yet experienced any displacement or force, so among the electrical signals detected by the touch panel 120, the signal part of the first frequency f1 The ratio of the intensity M1 to the intensity M2 of the signal portion of the second frequency f2 is a fixed value or a preset value. Or in another embodiment, the ratio of (M1-M2)/(M1+M2) or (M2-M1)/(M1+M2) is also a fixed value or a preset value. Besides, the ratio of M1/(M1+M2) or M2/(M1+M2) can also be used to represent the pressure value. In addition to the above four ratios, those skilled in the art can think of any ratios involving the intensities M1 and M2 to replace. In other words, when the proportional value is detected to be the fixed value, it can be determined that the sensor has not sensed any change in the physical quantity. In one embodiment, the transmitter 110 is not in contact with the touch panel 120 .

When the transmitter 110 touches the touch panel 120, the tip section 230 has a displacement stroke due to the force. The first impedance Z1 of the first element 221 changes corresponding to the stroke or force of the pen tip section 230, so that the strength M1 of the signal part of the first frequency f1 and the strength of the signal part of the second frequency f2 among the electrical signals The ratio of M2 changes, which is different from the above-mentioned fixed value or preset value. The touch panel 120 can use the above relationship to generate corresponding sensing values according to the ratio. The above-mentioned fixed value or preset value is not limited to a single value, and may also be within a tolerance range.

It should be noted that the ratio does not necessarily have a linear relationship with the sensed value. Furthermore, the sensed value does not necessarily have a linear relationship with the displacement stroke of the sensor or the force applied to the sensor. The sensing value is only a value sensed by the touch panel 120 , and the present invention does not limit the relationship thereof. For example, the touch panel 120 can use a look-up table or a plurality of calculation formulas to correspond from the ratio to the sensed value.

Please refer to FIG. 2B , which is a schematic diagram of the interior of the transmitter 110 according to an embodiment of the present invention. Similar to the embodiment in FIG. 2A , in the embodiment shown in FIG. 2B , after the mixed signal output by the first element 221 and the second element 222 , an additional amplifier 240 is added for amplifying the mixed signal. In one embodiment, for the above-mentioned first frequency f1 and second frequency f2, the amplification ratio or gain of the amplifier 240 is the same. In one embodiment, the amplification ratio or gain of the amplifier 240 is fixed. In another embodiment, the amplification ratio or gain of the amplifier 240 is adjustable, in other words, the amplifier 240 is a variable gain amplifier.

Please refer to FIG. 2C , which is a schematic diagram of the interior of the transmitter 110 according to an embodiment of the present invention. Similar to the embodiment of FIG. 2A, the embodiment shown in FIG. 2C connects a first amplifier 241 and a second amplifier 242 respectively after the output signals of the first signal source 211 and the second signal source 212, respectively for The output signals of the first signal source 211 and the second signal source 212 are amplified. In one embodiment, the amplification ratio or gain of the first amplifier 241 and the second amplifier 242 are fixed, and the gains of the two amplifiers are the same. In another embodiment, the amplification ratio or gain of the first amplifier 241 and the second amplifier 242 are adjustable, and the gains of the two amplifiers are the same. In other words, the first amplifier 241 and the second amplifier 242 are variable gain amplifiers.

Assuming that the gain and other conditions are the same in the embodiment shown in FIG. 2B and FIG. 2C , the embodiment shown in FIG. 2B can save power compared with the embodiment shown in FIG. 2C . Since the signal passing through the first element 221 or the second element 222 has not been amplified, this part of the consumed energy is saved. In this application, the amplifier can be placed before the tip section 230 to mix and amplify the signals from the first element 221 and the second element 222 , and then output to the tip section 230 . In addition, the amplifier can also be placed after the signal source to provide a larger input signal to the first element 221 and the second element 222 . Those skilled in the art can understand that the present application does not limit where the amplifier is placed, or whether there is an amplifier. Therefore, in the following embodiments, the amplifier is omitted.

Please refer to FIG. 2D and FIG. 2E , which are two circuit analysis diagrams of the embodiment in FIG. 2A . In this embodiment, when the signal sent by the tip section 230 forms a capacitively coupled circuit with the electrodes on the touch panel 120 , it is assumed that the total impedance of the tip section 230 and the touch panel 120 is Z3. The above-mentioned first frequency signal strength M1 and second frequency signal strength M2 may correspond to the current value flowing through the circuit whose impedance value is Z3. Since the distance between the pen tip section 230 and the touch panel 120 is unknown, even if the pen tip section 230 touches the touch panel 120, the distance between the pen tip section 230 and each electrode is also unknown, so the impedance value Z3 is variable. As the relative position between the tip section 230 and the touch panel 120 changes continuously.

In order to analyze the current values corresponding to the first frequency signal strength M1 and the second frequency signal strength M2 respectively, FIG. 2D and FIG. 2E are used for illustration. In the circuit analysis of FIG. 2D , the second signal source 212 does not output a signal to the second element 222 , the signal output by the first signal source 211 first passes through the first element 221 , and then flows through the second elements 222 connected in parallel respectively. It forms a loop with the touch panel 120 and returns to the first signal source 211 after passing through the ground. In the circuit analysis of FIG. 2E , the first signal source 211 does not output a signal to the first element 221, but the signal output by the second signal source 212 first passes through the second element 222, and then flows through the parallel first elements respectively. 221 and the touch panel 120 go through the ground and then return to the second signal source 212 to form a loop.

In Fig. 2D, the total impedance of the above-mentioned loop is Z, which can be represented by the following equation (1), where // represents parallel connection:

Z＝Z1+(Z2//Z3) Equation (1)

Equation (1) can be expressed as equation (2):

$Z=Z1+\frac{Z2Z3}{Z2+Z3}$ Equation (2)

Assuming that the voltages output by the first signal source 211 and the second signal source 212 are both V, the current I1 flowing through the first element 221 is V/Z. The current I3 flowing through the touch panel 120 is a shunt of the current I1, which can be expressed as equation (3):

$I3=\frac{V}{Z}\·\frac{Z2}{Z2+Z3}$ Equation (3)

Similarly, in Fig. 2E, the total impedance of the above loop is Z', which can be represented by the following equation (4), where // represents parallel connection:

Z'＝Z2+(Z1//Z3) Equation (4)

Equation (4) can be expressed as equation (5):

$Z^{,}=Z2+\frac{Z1Z3}{Z1+Z3}$ Equation (5)

Since the voltage output by the second signal source is also V, the current I2 flowing through the second element 222 is V/Z'. The current I3' flowing through the touch panel 120 is a shunt of the current I2, which can be expressed as equation (6):

$I{3}^{,}=\frac{V}{Z^{,}}\·\frac{Z1}{Z1+Z3}$ Equation (6)

Dividing equation (3) by equation (6) yields equation (7):

I3/I3'=Z2/Z1 Equation (7)

Since M1 and M2 correspond to I3 and I3' respectively, the ratio of the strength M1 of the signal portion of the first frequency f1 to the strength M2 of the signal portion of the second frequency f2 will be equal to the ratio of the first impedance Z1 to the second impedance Z2 Inversely proportional. In other words, M1/M2=k(Z2/Z1). From equation (3) and equation (6), it can be seen that the current values I3 and I3' have a common denominator CD. If any ratio of I3 to I3' can be known, as well as the known second impedance Z2, the variable first impedance Z1 can be deduced back. In other words, there is no need to be limited by equation (7).

If only the first element 221 with a single variable impedance Z1 is used, the third impedance Z3 between the tip section 230 and the touch panel 120 is also unknown due to the whole loop. There are two unknown variables in the same equation, it is impossible to solve the value of variable impedance Z1. If the touch processing device 130 insists on assuming a value of the third impedance Z3 , the error range of the calculated value of the variable impedance Z1 becomes larger.

Please refer to FIG. 2F , which is a schematic diagram of the interior of the transmitter 110 according to an embodiment of the present invention. The difference from the embodiment of FIG. 2A is that the embodiment of FIG. 2F only includes a single signal source 210 and a signal switch 215 connected to the signal source 210 for selectively time-sharing the output of the signal source 210 The signal is connected to the first element 221 and the second element 222 .

The circuit analysis of FIG. 2D and FIG. 2E can be applied to the embodiment of FIG. 2A to FIG. 2C, for analyzing the signal strength of the signals corresponding to the first frequency f1 and the second frequency f2 flowing through the touch panel 120 at the same time, and can also be applied to Among the embodiments in Fig. 2F. When the signal switch 215 is switched to the first element 221 within the first time, it can be applied to the circuit analysis of FIG. 2D , and when the signal switch 215 is switched to the second element 222 within the second time, it can be applied to the circuit of FIG. 2E analyze. The touch processing device 130 can calculate according to the signal strength or current value I3 measured at the first time and the signal strength or current value I3' measured at the second time, plus the known second impedance Z2. Get the value of the first impedance Z1.

Those of ordinary skill in the art can understand that the present invention can use two signal sources to send signals of different frequencies to the first element 221 and the second element 222 at the same time, and can also use a single signal source to send signals of the same frequency to the first element 222 in time division. A component 221 and a second component 222 . Both methods apply the same circuit analysis and the same calculation methods. Each of the following embodiments can utilize these two methods.

Please refer to FIG. 3 , which is a schematic diagram of the interior of the transmitter 110 according to an embodiment of the present invention. Similar to the embodiment of FIG. 2A, the transmitter 110 includes a first signal source 211, a second signal source 212, a first capacitor 321 with a first capacitance value C1, a second capacitor 322 with a second capacitance value C2, and Nib section 230.

The two signal sources 211 and 212 may be a first pulse width modulation signal source ( PWM1 ) and a second pulse width modulation signal source ( PWM2 ), respectively. The frequencies of the two signal sources can be the same or different. The transmitter 110 includes a second capacitor 322 with a fixed capacitance C2 and a first capacitor 321 with a variable capacitance C1, both of which are respectively connected to the aforementioned signal sources PWM2 212 and PWM1 211. Since the capacitance value C1 will change with the pressure value of the tip section 230, the embodiment shown in FIG. 3 may include a capacitive force sensor or a force sensing capacitor (FSC, Force Sensing Capacitor). In one embodiment, the capacitive force sensor can be implemented using a printed circuit board (PCB) or other materials. The structure of the force sensing capacitor will be described later in the present invention.

The intensity ratio of the two signal sources is inversely proportional to the impedance ratio of the two capacitors 321 and 322 . When the tip section 230 of the stylus does not touch an object, or the force sensor detects no force, the resistance value of the first capacitor 321 remains unchanged. The impedance ratios of the two capacitors 321 and 322 are therefore constant. When the transmitter 110 is suspended above the touch panel/screen 120 and the electrical signal emitted by it can be detected, the intensity ratio of the above two signal sources is fixed.

But when the tip section 230 of the transmitter 110 touches an object, or when the force sensor detects a force, the impedance of the first capacitor 321 changes accordingly. The impedance ratio of the two capacitors 321 and 322 also changes accordingly. When the transmitter 110 touches the surface of the touch panel/screen 120 and the electrical signal emitted by it can be detected, the intensity ratio of the above two signal sources changes with the force on the force sensor.

Please refer to FIG. 4A , which is a schematic diagram of the interior of the transmitter 110 according to an embodiment of the present invention. Similar to the embodiment in FIG. 3, the transmitter 110 includes a first signal source 211, a second signal source 212, a first capacitor 321 with a first capacitance value C1, a second capacitor 322 with a second capacitance value C2, and Nib section 230. The transmitter 110 may include multiple sensors for detecting various states. In one embodiment, the nib section 230 includes a pressure sensor, which is used to detect the force on the nib of the stylus and reflect it on the electrical signal it sends out. In another embodiment, the transmitter 110 may include multiple buttons, such as an eraser button and a barrel button. In other embodiments, the transmitter 110 may also include a switch for sensing whether the pen tip touches the touch screen or other objects. Those skilled in the art can understand that the transmitter 110 may include more buttons or other types of sensors, and is not limited to the above examples.

In the embodiment of FIG. 4A , the first capacitor 321 is connected in parallel with other two eraser capacitors 441 and penholder capacitors 442, which are respectively connected to the above-mentioned eraser (Eraser) button and penholder (Barrel) button, that is, the switches SWE and SWB. When the above-mentioned button or switch is pressed, the capacitors 441 and 442 will be connected in parallel with the first capacitor 321, so that the capacitance value on the PWM1 signal path changes, causing the impedance ratio on the PWM1 and PWM2 signal paths to change, so that the two signals The intensity ratio changes accordingly.

Since the capacitance value C1 and the impedance value of the first capacitor 321 will change, when the eraser capacitor 441 and the pen holder capacitor 442 are connected in parallel, the ratio of the impedance value of the parallel connection to the impedance value of the second capacitor 322 will fall within a range Inside. In the embodiment shown in FIG. 4A , it is assumed that within the variable range of the first capacitor 321 , the signal strength ratio of PWM1/PWM2 falls within the first range. After the first capacitor 321 is connected in parallel with the penholder capacitor 442, that is, after the penholder button is pressed, the signal ratio of PWM1/PWM2 falls within the second range. After the first capacitor 321 is connected in parallel with the eraser capacitor 441 , that is, after the eraser button is pressed, the signal ratio of PWM1/PWM2 falls within the third range. After the first capacitor 321 is connected in parallel with the penholder capacitor 442 and the eraser capacitor 441 , that is, after the penholder button and the eraser button are pressed simultaneously, the signal ratio of PWM1/PWM2 falls within the fourth range. The capacitance and impedance of the pen holder capacitor 442 and the eraser capacitor 441 can be adjusted so that the above-mentioned first range, second range, third range, and/or fourth range do not overlap. Since the above possible ranges do not overlap, it can be known which button is pressed according to which range the signal strength ratio falls in. Then, from the ratio of signal strength, what is the degree of force on the thrust back sensor.

Please refer to FIG. 4B , which is a schematic diagram inside the transmitter 110 according to an embodiment of the present invention. Compared with the embodiment of FIG. 4A, in the embodiment of FIG. 4B, the second capacitor 322 is connected in parallel with another two eraser capacitors 441 and penholder capacitors 442, which are connected to the above-mentioned eraser (Eraser) button and penholder (Barre) respectively. l) button, that is, switch SWE and SWB. When the above-mentioned button or switch is pressed, the pen holder capacitor 442 and the eraser capacitor 441 will be connected in parallel with the second capacitor 322, causing the impedance ratio on the PWM1 and PWM2 signal paths to change, so that the intensity ratio of the two signals will change accordingly .

Since the capacitance C1 and impedance of the first capacitor 321 will change, when the second capacitor 322, the eraser capacitor 441, and the pen holder capacitor 442 are connected in parallel, the ratio of the impedance of the first capacitor 321 to its parallel connection will fall within a range. Inside. In the embodiment shown in FIG. 4B , it is assumed that within the variable range of the first capacitor 321 , the signal strength ratio of PWM1/PWM2 falls within the first range. After the second capacitor 322 is connected in parallel with the penholder capacitor 442, that is, after the penholder button is pressed, the signal ratio of PWM1/PWM2 falls within the fifth range. After the second capacitor 322 is connected in parallel with the eraser capacitor 441 , that is, after the eraser button is pressed, the signal ratio of PWM1/PWM2 falls within the sixth range. After the second capacitor 322 is connected in parallel with the pen holder capacitor 442 and the eraser capacitor 441 , that is, after the pen holder button and the eraser button are pressed simultaneously, the signal ratio of PWM1/PWM2 falls within the seventh range.

FIG. 4B can also use the spirit of the embodiment in FIG. 4A, by adjusting the capacitance and impedance of the penholder capacitor 442 and the eraser capacitor 441, so that the above-mentioned first range, fifth range, sixth range, and/or seventh range None of the ranges overlap. Then it can know which button is pressed, and what is the degree of force on the thrust-back sensor.

Please refer to FIG. 5 , which is a schematic diagram of the interior of the transmitter 110 according to an embodiment of the present invention. The embodiment in FIG. 5 can be a modification of the embodiment in FIGS. 2A , 3 , 4A and 4B, and the changes made in the embodiment in FIG. 5 can be applied to the embodiments in the above-mentioned figures.

Compared with the embodiment of FIG. 2A , the embodiment of FIG. 5 has more ring electrodes 550 and ring wires 551 . The ring electrode wire 551 of FIG. 5 may be connected to the third signal source 513 through a ring capacitor 523 having a fixed capacitance Cr. The ring electrode 550 surrounds the nib section 230, is electrically coupled to the ring electrode wire 551, and is connected to the printed circuit board at the rear end. Although it is referred to as the ring electrode 550 in the present invention, in some embodiments, the ring electrode 550 may include multiple electrodes. The present application does not limit the number of ring electrodes 550 , which are referred to as ring electrodes 550 for convenience. The ring electrode 550 is electrically insulated from the pen tip, and the two are not electrically coupled.

In FIG. 5, six switches Sw1 to Sw6 are included. Assuming that the pen tip section 230 is to radiate the first signal source 211 , then Sw1 can be short-circuited and Sw2 can be opened. Conversely, Sw1 can be opened. Or short circuit Sw1 and Sw2 at the same time. Likewise, assuming that the pen tip section 230 is to radiate the second signal source 212 , then Sw3 can be short-circuited and Sw4 can be opened. On the contrary, Sw3 can be opened. Or short circuit Sw3 and Sw4 at the same time. Assuming that the ring-shaped electrode 550 is to radiate the third signal source 513 , then Sw5 can be short-circuited and Sw6 can be opened. On the contrary, Sw5 can be opened. Or short circuit Sw5 and Sw6 at the same time.

The above-mentioned first signal source 211 and second signal source 212 may contain signals of different frequencies, or may contain signals of multiple different frequency groups. Similarly, the third signal source 513 in FIG. 5 may also include signals of different frequencies from the first signal source 211 and the second signal source 212, or may include signals of different frequency groups from the first signal source 211 and the second signal source 212. Signal. Similarly, the above-mentioned first signal source 211 and second signal source 212 may include pulse width modulation (PWM) signals. The frequencies of the two signal sources 211 and 212 may be the same or different. Similarly, the third signal source 513 in FIG. 5 may also include a pulse width modulated (PWM) signal. The frequencies of these three signal sources can be the same or different.

Please refer to FIG. 6 , which is a schematic flowchart of a method for determining a transmitter or an active stylus tip sensing value by a touch device according to an embodiment of the present invention. The method can be executed by the touch processing device 130 in the embodiment of FIG. 1 . The touch processing device 130 is connected to the plurality of first electrodes 121 and the plurality of second electrodes 122 on the touch panel 120 for detecting the electrical signal sent by the pen tip section 230 of the transmitter 110 . The touch processing device 130 can determine the relative position of the transmitter 110 and the touch panel 120 according to the signal strengths received by the plurality of first electrodes 121 and the plurality of second electrodes 122 . Besides, the method shown in FIG. 6 can be used to determine the force sensing value of the transmitter 110 . In one embodiment, the force sensing value is the pressure value of the pen tip segment 230 .

The embodiment in FIG. 6 may correspond to the embodiment in FIG. 2A to FIG. 5 , and the first two steps 610 and 620 are to calculate the signal strengths M1 and M2 corresponding to the first signal source 211 and the second signal source 212 respectively. These two steps 610 and 620 can be performed in no particular order or simultaneously. When the electric signal sent by the first signal source 211 has the first frequency f1 and the electric signal sent by the second signal source 212 has the second frequency f2, the above-mentioned signal strength M1 corresponds to the strength of the signal of the first frequency f1, and the above-mentioned The signal strength M2 corresponds to the strength of the signal at the second frequency f2. When the electrical signal sent by the first signal source 211 has the first frequency group F1 and the electrical signal sent by the second signal source 212 has the second frequency group F2, the above-mentioned signal strength M1 corresponds to the first frequency group F1 The total strength of each frequency signal, the above-mentioned signal strength M2 corresponds to the total strength of each frequency signal in the second frequency group F2. As mentioned above, the so-called frequency here may also be the frequency of pulse width modulation.

Then, in step 630, a ratio is calculated according to M1 and M2. Five examples of this ratio have been cited above, for example, M1/M2, (M1-M2)/(M1+M2), (M2-M1)/(M1+M2), M1/(M1+M2) Or M2/(M1+M2). In addition to the above five ratios, those skilled in the art can think of any ratio involving the intensities M1 and M2. Next, step 640 is executed to judge whether it is a preset value or falls within a default range according to the ratio value. If the determination result is true, step 650 is executed, and it is considered that the transmitter 110 is floating and not touching the touch panel 120 . Otherwise, step 660 is executed to calculate the sensing value of the pen tip segment 230 according to the ratio value. The sensed value may or may not be related to the degree of force and/or stroke. The step of calculating the sensing value can be calculated by using table look-up method, linear interpolation method, or quadratic curve method, depending on the corresponding relationship between the proportional value and the sensing value.

When the embodiment of FIG. 6 is applicable to the embodiments of FIGS. 4A and 4B , additional steps may be performed in step 660 . For example, when applicable to the embodiment of FIG. 4A , it can be determined that the ratio value calculated in step 630 falls within the first range, the second range, the third range, or the fourth range. Accordingly, in addition to knowing the sensing value of the pen tip section 230 , it can also be deduced whether the pen holder button and/or the eraser button is pressed. Similarly, when used in the embodiment of FIG. 4B , it can be determined that the ratio value calculated in step 630 falls within the above-mentioned first range, fifth range, sixth range, or seventh range. Accordingly, in addition to knowing the sensing value of the pen tip section 230 , it can also be deduced whether the pen holder button and/or the eraser button is pressed.

In an embodiment of the present invention, the controller or circuit in the transmitter 110 does not need to judge the degree of force exerted on the pen tip section 230, and the first impedance Z1 of the above-mentioned first element 221 is simply changed by the force exerted on the pen tip section 230. One or both of the second impedance Z2 of the second element 222, so that the transmitted signal strength of the first frequency f1 or the first frequency group F1 is equal to the signal strength of the second frequency f2 and the second frequency group F2 Either or both change. Relatively, when the electric signal is received through the touch panel 120, according to the intensity M1 of the signal part of the first frequency f1 or the first frequency group F1, the second frequency f2 and the second frequency group in the demodulated electric signal, The ratio of the intensity M2 of the signal part of the group F2 can determine the degree of force on the pen tip section 230 .

In an embodiment of the present invention, the transmitter 110 does not need to measure the stress of the pen tip 230 , that is, it can control at least one property of the electrical signal sent by the pen tip 230 to correspond to the force. In an embodiment, the above-mentioned measurement includes an analog-to-digital conversion function. In other words, the transmitter 110 does not include components for converting the stress level from analog to digital signal. For example, the transmitter does not contain an analog-to-digital signal converter to convert the force level.

Please refer to FIG. 7A , which is a schematic diagram of the interior of the transmitter 110 according to an embodiment of the present invention. Compared with the embodiments in FIGS. 2A to 5 , the embodiment in FIG. 7A also includes a first element 221 with a first impedance Z1 , a second element 222 with a second impedance Z2 , and a nib section 230 . The above-mentioned first element 221 and second element 222 may be electronic elements formed by resistive elements, inductive elements, capacitive elements (such as solid capacitors) or any combination thereof. In the embodiment shown in FIG. 7A , the second impedance Z2 can be fixed, and the first impedance Z1 can be variable, and corresponds to the variation of a certain sensor, such as the force on the pen tip section 230 . The first component 221 and the second component 222 of the embodiment in FIG. 7A can be applied to the various embodiments in FIGS. 2A to 5 , and will not be described in detail here.

Compared with the previous embodiments, the difference of the embodiment in FIG. 7A is that it further includes a single signal source 714 for feeding electrical signals to the above-mentioned first element 221 and second element 222 . It also includes a control unit 760 for measuring the first current value I1 and the second current value I2 respectively outputted by the electrical signal passing through the first element 221 and the second element 222 . The control unit 760 can also calculate the proportional value accordingly. The ratio value can be I1/(I1+I2), I2/(I1+I2), I1/I2, I2/I1, (I1-I2)/(I1+I2), or (I2-I1)/(I1 +I2) etc. Those skilled in the art can deduce other kinds of proportional values calculated by using the current values I1 and I2 .

The calculated proportional value can be used to estimate the force of the pen tip section 230 . The control unit 760 can send the calculated data derived from the first current value I1 and the second current value I2 through the transmitter wireless communication unit 770. The host 140 can receive the above-mentioned data from the host wireless communication unit 780 to know the stress of the pen tip section 230 .

Please refer to FIG. 7B , which is a schematic diagram of the interior of the transmitter 110 according to an embodiment of the present invention. The difference from the embodiment in FIG. 7A is that the control unit 760 can send the data derived and calculated from the first current value I1 and the second current value I2 through the transmitter wired communication unit 771 . The host 140 can receive the above-mentioned data from the wired communication unit 781 of the host, and know the stress of the pen tip section 230 .

Please refer to FIG. 7C , which is a schematic diagram of the interior of the transmitter 110 according to an embodiment of the present invention. The difference from the embodiment in FIG. 7B is that the transmitter 110 no longer includes the above-mentioned single signal source 714, but directly uses the electrical signal obtained from the wired communication unit 771 of the transmitter as the signal source. Since the wired communication unit 771 of the sender is connected to the wired communication unit 781 of the host, the above-mentioned electric signal can use the power of the host 140 .

Please refer to FIG. 7D , which is a schematic diagram inside the transmitter 110 according to an embodiment of the present invention. The difference from the embodiment in FIG. 7A is that the transmitter 110 no longer includes the above-mentioned single signal source 714, but directly utilizes the pen tip section 230 when it is close to the touch panel 120, from the first signal source on the touch panel 120. The signal obtained by the electrode 121 and/or the second electrode 122 is used as a signal source.

It is worth mentioning that the embodiment shown in FIG. 7A to FIG. 7D can apply the changes of the embodiment shown in FIG. 3 , the first element 221 can be the above-mentioned first capacitor 321 , and the second element 222 can be the above-mentioned second capacitor 322 . The embodiment of Figure 7A to Figure 7D can apply the changes of the embodiment of Figure 4A to Figure 4B, the above-mentioned first element 221 can be connected in parallel with the corresponding elements of other switches, or the above-mentioned second element 222 can be connected with other switches corresponding The components are connected in parallel so that the control unit 760 can know the states of those switches according to the range in which the calculated proportional value falls.

Please refer to FIG. 8 , which is a schematic flow chart of a method for determining a pen tip sensing value of a transmitter by a touch device according to an embodiment of the present invention. The embodiment in FIG. 8 is a method for detecting sensing values similar to the embodiment in FIG. 6 . FIG. 6 is used to calculate the signal strengths M1 and M2 corresponding to the first frequency (group) and the second frequency (group), and then use the ratio of the two to calculate the sensing value. However, the embodiment of FIG. 8 is applicable to the embodiment that only feeds a single signal source, by calculating the first current I1 and the second current I2 corresponding to the first element 221 and the second element 222, and then using the ratio of the two value to calculate the sensing value.

The method can be executed by the control unit 760 in the embodiment of FIG. 7A to FIG. 7D . The first two steps 810 and 820 are to calculate the first current I1 and the second current I2 corresponding to the first element 221 and the second element 222 respectively. These two steps 810 and 820 can be performed in no particular order, or can be performed simultaneously. Then, in step 830, a ratio is calculated according to I1 and I2. Several examples of this ratio have been cited above, such as I1/(I1+I2), I2/(I1+I2), I1/I2, I2/I1, (I1-I2)/(I1+I2) , or (I2-I1)/(I1+I2), etc. Next, step 840 is executed to judge whether it is a preset value or falls within a default range according to the ratio value. If the determination result is true, step 850 is executed, and it is considered that the transmitter 110 is floating and not touching the touch panel 120 . Otherwise, step 860 is executed to calculate the sensing value of the pen tip segment 230 according to the ratio value. The sensed value may or may not be related to the degree of force and/or stroke. The step of calculating the sensing value can be calculated by using table look-up method, linear interpolation method, or quadratic curve method, depending on the corresponding relationship between the proportional value and the sensing value.

In some embodiments, when the first element 221 or the second element 222 is connected in parallel with other corresponding elements of the switch, as in the embodiment of FIG. 4A and FIG. 4B , an additional step can be performed in step 860 . For example, when applicable to the embodiment of FIG. 4A , it can be determined that the ratio value calculated in step 830 falls within the first range, the second range, the third range, or the fourth range. Accordingly, in addition to knowing the sensing value of the pen tip section 230 , it can also be deduced whether the pen holder button and/or the eraser button is pressed. Similarly, when used in the embodiment of FIG. 4B , it can be judged that the ratio value calculated in step 830 falls within the above-mentioned first range, fifth range, sixth range, or seventh range. Accordingly, in addition to knowing the sensing value of the pen tip section 230 , it can also be deduced whether the pen holder button and/or the eraser button is pressed.

Please refer to FIG. 9A , which is a timing diagram of signal modulation of the transmitter 110 according to an embodiment of the present invention. The embodiment of FIG. 9A can be applied to the transmitter 110 of FIGS. 2A to 5 . The horizontal axis in FIG. 9A is the time axis, and the sequence is from left to right. As shown, an optional noise detection period may be included before the touch panel/screen 120 emits the lighthouse signal. The noise detected during the noise detection may come from the touch panel/screen and its electronic system or background environment. The touch panel/screen 120 and the touch processing device 130 can detect one or more frequencies contained in the noise signal. The part about noise detection will be explained later.

In one embodiment, the touch panel/screen 120 sends out a beacon signal, and the transmitter 110 includes a demodulator capable of detecting the beacon signal. Please refer to FIG. 29 , which is a schematic block diagram of a system for detecting lighthouse signals according to an embodiment of the present invention. The detection lighthouse signal system 2900 includes a receiving electrode 2910 , a detection module 2920 and a demodulator 2930 . In an embodiment, the receiving electrode 2910 may be the above-mentioned ring electrode 550, or the above-mentioned pen tip section 230, or other electrodes. The receiving electrode 2910 sends the received signal to the subsequent detection module 2920 .

The detection module 2920 includes an analog front end 2921 and a comparator 2922 . Those of ordinary skill in the art can understand what the analog front end 2921 does, and will not be described in detail here. In this embodiment, the analog front end 2921 may include outputting a voltage value representing the signal strength. The comparator 2922 is used to compare the reference voltage Vref with the voltage signal representing the received signal strength. When the voltage signal is higher than the reference voltage, it means that a strong enough signal is received, so the comparator 2922 outputs an activation signal or an enable signal to the demodulator 2930 . The demodulator 2930 can demodulate the received signal, so as to know whether the frequency of the lighthouse signal is included in the received signal. When the voltage signal is lower than the reference voltage, the comparator 2922 can output a shutdown signal to the demodulator 2930, and the demodulator 2930 stops demodulating the received signal.

When the transmitter 110 does not receive a lighthouse signal for a period of time, it can switch to a sleep mode and turn off the above-mentioned demodulator 2930 to save power consumption. However, since the detection module 2920 consumes less power, it can continuously detect whether the received signal strength exceeds a predetermined value in the sleep mode. When the predetermined value is exceeded, the sleep mode can be switched to a less power-saving energy-saving mode, and the demodulator 2930 is activated to perform demodulation. At the same time, the rest of the transmitter 110 remains off. Assuming that the demodulator 2930 thinks that the received signal does not contain a lighthouse signal, after a period of time, the demodulator 2930 can be turned off, and the energy-saving mode enters a relatively power-saving sleep mode. Conversely, when the demodulator 2930 thinks that the received signal contains a lighthouse signal, the demodulator 2930 can wake up other parts of the transmitter 110, so that the transmitter 110 can be converted from the energy-saving mode to the normal working mode .

Now returning to the embodiment shown in FIG. 9A , after a delay time of L0 , the transmitter 110 sends out electrical signals during T0 and T1 , respectively. A delay time of length L1 may be included between the two periods T0 and T1. The two time periods T0 and T1 may be of equal length or of unequal length. T0 and T1 may be collectively referred to as a signal frame. The touch processing device 130 detects the electrical signal sent by the transmitter 110 during the two time periods T0 and T1 . Then, after an optional delay time of length L2 , the touch processing device 130 performs optional detection steps of other modes, such as the aforementioned capacitive detection mode for detecting an inactive pen or finger.

The present invention does not limit the lengths of the aforementioned delay times L0 , L1 , and L2 , and these three delay times may be zero or any length of time. The lengths of the three may or may not be related. In an embodiment, among the time periods shown in FIG. 9A , only the time periods T0 and T1 in the signal frame are necessary, and other time periods or steps are optional.

Table I

Please refer to Table 1, which is a modulation table of the electrical signal of the transmitter 110 according to an embodiment of the present invention. In Table 1, the transmitter 110 is in a suspended state, that is, the force sensor does not feel any pressure. Since the tip section 230 of the transmitter 110 does not touch the touch panel/screen 120, in order to enhance the signal, in the embodiment of Table 1, the first signal source 211 and the second signal source 212 are in the same period , both produce the same frequency group Fx. For example, in the state where the pen button is pressed, both the first signal source 211 and the second signal source 212 transmit the frequency group F0 during the T0 period, and during the T1 period, the first signal source 211 and the second signal source 211 transmit the frequency group F0. Sources 212 each transmit frequency group F1. When the touch processing device 130 detects the frequency group F0 in the T0 period and detects the frequency group F1 in the T1 period, it can be deduced that the pen button of the transmitter 110 in the hovering state is pressed.

The aforementioned frequency group Fx includes signals of at least one frequency, which are interchangeable with each other. For example, the frequency group F0 may include frequencies f0 and f3, the frequency group F1 may include frequencies f1 and f4, and the frequency group F2 may include frequencies f2 and f5, and so on. Regardless of whether the frequency f0 or the frequency f3 is received, the touch processing device 130 will regard the frequency group F0 as received.

In another embodiment, the transmitter 110 in the floating state does not necessarily require that the two signal sources 211 and 212 both send out signals of the same frequency group. The present invention does not limit Table 1 as the only embodiment. In addition, the transmitter 110 may also include more buttons or sensors, and the present invention is not limited to only two buttons.

Table II

Please refer to Table 2, which is a modulation table of the electrical signal of the transmitter 110 according to an embodiment of the present invention. In Table 2, the pen tip section 230 of the transmitter 110 is in a contact state, that is, the force sensor feels pressure.

In the embodiment shown in FIG. 4A, the following is the case where the pen button SWB is pressed. During the T0 period, the signal source of the first signal source 211 is grounded, and the second signal source 212 sends out the frequency group F0, so the electrical signal of the transmitter 110 only has the frequency group sent by the second signal source 212 during the T0 period F0. During the period T1, the signal source of the second signal source 212 is grounded, and the first signal source 211 sends out the frequency group F1. Also because the impedance value of the first capacitor 321 changes during contact, the force on the pen tip section 230 can be calculated according to the strength ratios of the F0 and F1 signals received during T0 and T1 respectively. In addition, since the touch processing device 130 detects the F0 signal during the T0 period and detects the F1 signal during the T1 period, it can be deduced that the pen button is pressed.

In the embodiment shown in FIG. 4B, the following is the case where the pen button SWB is pressed. During the period T0, the signal source of the first signal source 211 is grounded, the second signal source 212 sends out the frequency group F0, and the second capacitor 322 is connected in parallel with the penholder capacitor 442 . Although the electrical signal of the transmitter 110 only has the frequency group F0 sent by the second signal source 212 during the T0 period, its signal strength is different from that of the case where the pen button SWB is not pressed. During the T1 period, the signal source of the second signal source 212 is grounded, and the first signal source 211 sends out the frequency group F1, and because the impedance value of the first capacitor 321 changes during contact, it can be determined according to the difference between T0 and T1 periods. The strength ratio of the received F0 and F1 signals is used to calculate the force of the stylus. In addition, since the touch processing device 130 detects the F0 signal during the T0 period and detects the F1 signal during the T1 period, it can be deduced that the pen button is pressed.

Table three

Please refer to Table 3, which is a modulation table of the electrical signal of the transmitter 110 according to an embodiment of the present invention. In this embodiment, which buttons are pressed can be known according to frequency groups.

Table four

Please refer to Table 4, which is a modulation table of the electrical signal of the transmitter 110 according to an embodiment of the present invention. In this embodiment, it is possible to know which buttons are pressed according to the frequency group, and also rely on the ratio of the received signal strength during the time period T0 and T1 to estimate the force on the tip of the stylus.

Please refer to FIG. 9B , which is a timing diagram of signal modulation of the transmitter 110 according to an embodiment of the present invention. It is another modification of the embodiment in Fig. 9A. The difference from FIG. 9A is that the noise detection step is performed after the T1 period. Then, perform detection in other modes.

Please refer to FIG. 9C , which is a timing diagram of signal modulation of the transmitter 110 according to an embodiment of the present invention. The signal modulation in FIG. 9C can be applied to the transmitter 110 shown in FIG. 5 . Another function of adding the ring electrode 550 is to enhance the signal strength when the active pen is suspended, so as to facilitate the touch panel to detect the active pen’s suspension. scope.

The signal modulation in FIG. 9C is a signal sent by the transmitter 110 when it is in a suspended state. In this state, the signal frame sent by the transmitter 110 contains only a single R period. During this R period, the ring electrode 550 and the tip section 230 can simultaneously send out electrical signals. In an embodiment, these electrical signals may come from the same signal source and have the same frequency and/or modulation method. For example, both the ring electrode and the tip of the pen send out the electrical signal of the third signal source 513 . For another example, the ring-shaped electrode 550 and the pen tip section 230 can collectively send out the electrical signals of the first, second, and third signal sources in sequence, so as to utilize the maximum power of each signal source respectively. During the R period, the touch processing device 130 only needs to detect the electrical signal sent by the ring electrode 550 to know that the transmitter 110 is floating on a certain position of the touch panel 120 . If the electrical signals sent by the ring electrode 550 and the pen tip section 230 come from the same signal source, or have the same frequency group, the signal strength will be the maximum, so that the touch panel can maximize the hovering range of the stylus. . In another embodiment, during the R period, the electrical signal can also be sent only through the ring electrode 550 .

Please refer to FIG. 9D , which is a timing diagram of signal modulation of the transmitter 110 according to an embodiment of the present invention. The signal modulation of FIG. 9D can be applied to the transmitter 110 shown in FIG. 5 . In FIG. 9C , a delay time or a blank period L1 is included after the R period, and then the touch panel performs other detections. Compared with the embodiment of FIG. 9C , the time of the L1 period becomes longer in the embodiment of FIG. 9D . Compared with the embodiment in FIG. 9E in FIG. 9D , the length of the L1 period is equal to the sum of the L1 period, T0 period, L2 period, T1 period and T3 period in FIG. 9E . Therefore, if the touch processing device 130 in FIG. 9D does not detect any electrical signal within the fixed-length L1 period, it can be known that the transmitter 110 is in the floating state.

Please refer to FIG. 9E , which is a timing diagram of signal modulation of the transmitter 110 according to an embodiment of the present invention. The signal modulation of FIG. 9E can be applied to the transmitter 110 shown in FIG. 5 . The embodiment in FIG. 9E can be said to add an R period to the front of the signal frame in the embodiment in FIG. 9A . In this embodiment, no matter whether the pen tip section 230 is pressed or not, the transmitter 110 always sends out electrical signals from the pen tip during the T0 period and the T1 period, thereby saving some logic circuit designs. However, compared with the embodiments of FIG. 9C and FIG. 9D , the embodiment of FIG. 9E will waste the power of the electrical signal sent during the T0 period and the T1 period. On the other hand, the touch processing device 130 does not need to detect during the R period, as long as it can detect the electrical signal sent by the pen tip section 230 during the T0 period and T1 period, it can naturally know that the pen tip section 230 Whether it is under pressure, so as to know whether the transmitter 110 is in a suspended state.

Please refer to FIG. 9F , which is a timing diagram of signal modulation of the transmitter 110 according to an embodiment of the present invention. The signal modulation of FIG. 9F can be applied to the transmitter 110 shown in FIG. 5 . In the embodiment shown in FIG. 9E , the proportional relationship between the R period and the lengths of the T0 period and the T1 period is not limited. In the embodiment of FIG. 9F , the length ratio of the R period to the T0 period and the T1 period is 1:2:4. In this way, it is assumed that the touch processing device 130 can perform N times of sampling in a unit time, and N is a positive integer. Therefore, during the R period, the T0 period, and the T1 period, the touch panel can perform N:2N:4N times of sampling. The present invention does not limit the length ratios of these three periods. For example, the period with the strongest electrical signal power can last for the smallest unit time, and the period with the smallest electrical signal power can last for the longest unit time. For example, the length ratio can be 1:3:2, or 1:2:3, etc., depending on the design. Although only the modulation of two time periods T0 and T1 is mentioned in the above text, the present invention is not limited to the modulation of two time periods, but can be applied to the modulation of more time periods.

In one embodiment, the transmitter 110 can send out a stronger electrical signal when the pen tip is not in contact, and send out a weaker electrical signal when the pen tip is in contact. Accordingly, the touch processing device 130 can have a higher probability of detecting the transmitter 110 floating above the touch panel 120 . Moreover, when the transmitter 110 touches the touch panel 120 , the energy consumed by the transmitter 110 can be saved.

For example, in the embodiment shown in FIG. 9C and FIG. 9D , that is, when the tip section 230 is not touched, the electrical signal sent during the R period may be greater than the electrical signal sent during the L1 period corresponding to the T0 period and the T1 period. For example, during the R period, the electrical signals sent by the tip section 230 and the ring electrode 550 come from the first signal source 211 , the second signal source 212 and the third signal source 513 . Therefore, the electrical signal emitted during the R period is the sum of the outputs of the three signal sources 211 , 212 and 513 .

In the embodiment shown in FIG. 9A , Table 1 shows the output powers of the first signal source 211 and the second signal source 212 utilized when the transmitter 110 is in the floating state. Table 2 shows the output power only used by the first signal source 211 or the second signal source 212 during the time period T0 and T1 when the transmitter 110 is in the contact state. Therefore, the transmitter 110 can send out a stronger electrical signal when the pen tip is not in contact, and send out a weaker electrical signal when the pen tip is in contact.

Similarly, Table 3 shows the output powers used by the first signal source 211 and the second signal source 212 when the transmitter 110 is in the floating state. Table 4 shows the output power only used by the first signal source 211 or the second signal source 212 during the time period T0 and T1 when the transmitter 110 is in the contact state. Therefore, the transmitter 110 can send out a stronger electrical signal when the pen tip is not in contact, and send out a weaker electrical signal when the pen tip is in contact.

Please refer to FIG. 10 , which is a schematic diagram of noise propagation according to an embodiment of the present invention, for why the steps and periods of noise detection are added in the embodiments of FIGS. 9A to 9F . In FIG. 10 , the electronic system 100 where the touch panel/screen 120 is located emits noise at frequency f0 , and frequency f0 is exactly one frequency in the frequency group F0 . Assume that the frequency group F0 also contains another frequency f3. When the user holds the electronic system 100 , the f0 frequency noise will be transmitted to the touch panel/screen 120 through the user's fingers. If the step of noise detection is not performed, the touch panel/screen 120 may mistake the f0 frequency signal transmitted from the finger as the electrical signal sent by the transmitter 110 during the period of the signal frame. Therefore, if the noise at the f0 frequency is detected in advance, the signal source at the f0 frequency can be filtered out within the period of the signal frame.

Assuming that the transmitter 110 has the function of automatic frequency conversion, when the transmitter 110 itself detects that the touch panel/screen 120 emits the noise of frequency f0, it automatically switches to another frequency f3 of the same frequency group F0. During the time period of the signal frame, the touch processing device 130 detects the f3 frequency from the transmitter 110 and the f0 frequency from the finger, thereby causing confusion. Therefore, in the embodiment shown in FIG. 9B , in the case of aliasing, a noise detection step is performed after the T1 period or signal frame. Since the transmitter 110 has stopped transmitting the signal of the f3 frequency, the finger and the electronic system 100 still continue to emit the f0 frequency noise. The touch processing device 130 can deduce that, among the signals detected in the original signal frame period, the signal with the frequency f3 is the signal really from the transmitter 110 .

In the above description of FIG. 2A , the ratio of the signal strengths of multiple frequencies is adjusted by using the change of the impedance of the first element 221 . Please refer to FIG. 11 , which is a schematic structural diagram of the first capacitor 221 according to another embodiment of the present invention. The ratio of the signal strengths of multiple frequencies is adjusted by using the impedance change of the first capacitor 221 . A traditional capacitive element is formed by two conductive metal plates. Its permittivity C is proportional to the dielectric constant and the area of the metal plate, and inversely proportional to the distance between the metal plates.

One of the main spirits of the above-mentioned embodiments is to use a mechanical structure to turn the stroke of the elastic nib section 230 along the axis of the transmitter 110 into a direction perpendicular to the axis of the transmitter 110 or at a distance from the axis of the transmitter 110. Travel in the angle direction. By changing the stroke, the permittivity of the first capacitor 221 and its corresponding first impedance Z1 are changed, and the permittivity of the second capacitor 222 and its corresponding second impedance Z2 are kept fixed, thereby changing the first frequency of the electrical signal The ratio of the strength M1 of the signal portion of the (group) to the strength M2 of the signal portion of the second frequency (group).

In Fig. 11, there are three metal plates that are not in contact with each other. The first metal plate 1110 and the second metal plate 1120 form the first capacitor 221 , and the second metal plate 1120 and the third metal plate 1130 form the second capacitor 222 . In one example, the first metal plate 1110 is formed on a flexible circuit board or a printed circuit board with insulating varnish or another layer of insulating plate on its surface. The second metal plate 1120 and the third metal plate 1130 are formed on the same circuit board or two layers of the printed circuit board, and its surface has insulating varnish or another layer of insulating plate. The second metal plate 1120 is coupled to the forward nib segment 230 via additional circuitry. The nib is fixed on the lifting element 1140 (such as the inclined device described below), and the displacement of the nib section 230 directly or indirectly lifts part or all of the first metal plate 1110 (or an elastic circuit board or a printed circuit board), or causes the first The deformation of the metal plate 1110 (or the elastic circuit board or printed circuit board) in the direction perpendicular to the axis of the transmitter 110 is collectively referred to as the displacement perpendicular to the axis of the stylus in the following description.

The first metal plate 1110 is supplied with an electrical signal having a first frequency (group), and the third metal plate 1130 is supplied with an electrical signal having a second frequency (group). Therefore, the second metal plate 1120 induces and generates electrical signals with the first frequency (group) and the second frequency (group), which are transmitted to the touch panel 120 through the front pen tip section 230 . When the pen tip section 230 is not stressed, the first metal plate 1110 and the circuit board to which it belongs have no displacement perpendicular to the axial direction of the transmitter 110 . However, after the nib section 230 is stressed, due to the slope device 1140 behind the nib section, the force is converted from a direction parallel to the axis to a direction perpendicular to the axis, causing the circuit board to which the first metal plate 1110 belongs to be deformed and displacement, which further lead to a change in the dielectric constant of the first capacitor 221 . Therefore, the permittivity C1 of the first capacitor 221 and the first impedance Z1 also change accordingly. After the pen tip section 230 is stressed, the circuit boards to which the second metal plate 1120 and the third metal plate 1130 belong are displaced as a whole, so the permittivity C2 and impedance Z2 of the second capacitor 222 remain unchanged.

Since the circuit board on which the first metal plate 1110 is located will deform upwards, this embodiment may include at least one supporting element 1150 to provide a supporting force in the opposite direction, so that after the force on the pen tip section 230 disappears, the first metal plate 1110 will be supported. The circuit board where it is located is restored to its original state. Before being deformed, the supporting force provided by the supporting element 1150 may be zero.

In the example of this embodiment, the permittivity of the first capacitor 221 and the second capacitor 222 can be designed to be the same. With the same permittivity, the permittivity, distance, and area of the two capacitors may be the same. Of course, the present invention does not limit the permittivity of the two capacitors 221 and 222 to be the same, as long as the touch processing device 130 knows the corresponding impedance ratio of the two capacitors of the transmitter 110 .

In this embodiment, an inexpensive circuit board or printed circuit board is used in place of the more expensive force sensing resistors. Moreover, when the permittivity of the first capacitor 221 and the second capacitor 222 are the same, when the external environment changes, the permittivity thereof will also change simultaneously, thereby maintaining the preset value of the ratio. In addition, the transmitter 110 itself does not need active control elements to adjust the ratio of the two impedances Z1 and Z2, but only needs to provide electrical signals passively, which can save a lot of resources.

Please refer to FIG. 12 , which is a simplified representation of the embodiment shown in FIG. 11 , which omits the circuit board, the supporting element 1150 , and the connection circuit between the second metal plate 1120 and the nib section 230 . The description of the embodiment shown in FIG. 12 can refer to FIG. 11 .

Please refer to FIG. 13 , which is a schematic diagram of a modification of the embodiment shown in FIG. 12 , wherein the third metal plate 1130 can be moved behind the first metal plate 110 and is not electrically coupled with the first metal plate 1110 . When the pen tip section 230 is stressed, only the first metal plate 1110 and the circuit board to which it belongs will be displaced and deformed. In a certain embodiment, the first metal plate 1110 and the third metal plate 1130 may be formed on the same circuit board.

Please refer to FIG. 14, which is a schematic diagram of a modification of the embodiment shown in FIG. The first frequency (group) and the second frequency (group). When the pen tip section 230 is stressed, the first metal plate A 1110A, the first metal plate B 1110B and the circuit boards to which they belong will be displaced and deformed. However, the third metal plate A 1130A, the third metal plate B 1130B and the circuit boards to which they belong will not have displacement deformation. Compared with the embodiment shown in FIG. 13 , due to the displacement and deformation of the two metal plates 1110A and 1110B, the variation will be larger and more obvious than the embodiment shown in FIG. 13 .

Please refer to FIG. 15, which is a schematic diagram of a modification of the embodiment shown in FIG. 14, wherein the second metal plate 1120 is also divided into two metal plates 1120A and 1120B, but the second metal plate A 1120A and the second metal plate Board B 1120B is commonly connected to nib segment 230 by circuitry. The first metal plate A 1110A and the second metal plate A 1120A form a first capacitor A221A, and the second metal plate A 1120A and the third metal plate A 1130A form a second capacitor A 222A. The first metal plate B 1110B and the second metal plate B 1120B form a first capacitor B 221B, and the second metal plate B 1120B and the third metal plate B 1130B form a second capacitor B 222B. When the pen tip section 230 is stressed, the first metal plate A 1110A, the first metal plate B 1110B and the circuit boards to which they belong will be displaced and deformed. However, the third metal plate A 1130A, the third metal plate B 1130B and the circuit boards to which they belong will not have displacement deformation. Compared with the embodiment shown in FIG. 13 , due to the displacement and deformation of the two metal plates, the amount of change will be larger and more obvious than the embodiment shown in FIG. 13 .

Please refer to FIG. 16A , which is a schematic diagram according to an embodiment of the present invention. In the embodiment shown in FIG. 16A , the first metal plate 1110 , the second metal plate 1120 and the third metal plate 1130 are included from top to bottom. Wherein, the first metal plate 1110 and the third metal plate 1130 are fixed, and feed signals of the first frequency (group) and the second frequency (group) respectively. The second metal plate 1120 will sense the signals of the first frequency (group) and the second frequency (group) of the upper and lower metal plates, and the output has a mixture of the first frequency (group) and the second frequency (group) electrical signal.

A first capacitor 221 is formed between the first metal plate 1110 and the second metal plate 1120 , and a second capacitor 222 is formed between the second metal plate 1120 and the third metal plate 1130 . When the second metal plate 1120 is not deformed, under the same environment, the impedance values of the first capacitor 221 and the second capacitor 222 are fixed, so the analysis of the electric signal corresponding to the first frequency (group) and the second Intensities M1 and M2 of frequencies (groups), and proportional values are calculated based on these two intensity values. When the ratio is a preset value or falls within a default range, it can be known that the second metal plate 1120 is not deformed.

When the second metal plate 1120 is deformed, the impedance and capacitance of the first capacitor 221 and the second capacitor 222 change. Therefore, the proportional value is calculated according to the two strength values, and the deformation or stress of the second metal plate 1120 can be deduced back according to the change of the proportional value. Here, various steps of the embodiment shown in FIG. 6 can be applied.

Please refer to FIG. 16B , which is a schematic diagram of a modification of the embodiment shown in FIG. 16A . The second metal plate 1120 and the third metal plate 1130 are fixed, and are respectively fed with signals of the first frequency (group) and the second frequency (group). The first metal plate 1110 will sense the signals of the first frequency (group) and the second frequency (group) of the second metal plate 1120 and the third metal plate 1130 below, and the output has a mixed first frequency (group) ) and the electrical signal of the second frequency (group).

A first capacitor 221 is formed between the first metal plate 1110 and the second metal plate 1120 , and a second capacitor 222 is formed between the first metal plate 1110 and the third metal plate 1130 . When the first metal plate 1110 is not deformed, under the same environment, the impedance values of the first capacitor 221 and the second capacitor 222 are fixed, so the analysis of the electric signal corresponding to the first frequency (group) and the second Intensities M1 and M2 of frequencies (groups), and proportional values are calculated based on these two intensity values. When the ratio is a preset value or falls within a default range, it can be known that the first metal plate 1110 is not deformed.

When the first metal plate 1110 is deformed, the impedance and permittivity of the first capacitor 221 and the second capacitor 222 change. Therefore, the proportional value is calculated according to the two strength values, and the deformation or stress of the first metal plate 1110 can be deduced back according to the change of the proportional value. Here, various steps of the embodiment shown in FIG. 6 can be applied. The above-mentioned impedance value may change with temperature and humidity, and the impedance values of the first capacitor 221 and the second capacitor 222 of the present invention change with temperature and humidity at the same time, so when calculating the proportional value, the influence of temperature and humidity can be reduced or avoided. The effect of the scale value.

Please refer to FIG. 17A and FIG. 17B , which are structural schematic diagrams of the first capacitor and the second capacitor according to the present invention. In the embodiment of FIG. 16A and FIG. 16B , the first frequency (group) and the second frequency (group) are respectively fed in. In the embodiment of FIG. 17A and FIG. 17B , only the driving signal of the same frequency needs to be fed in. That's it. In other words, it can be applied to the various embodiments in FIG. 7A to FIG. 7D , and the fed-in driving signal can be the single signal source 714 in FIG. 7A and FIG. The signal as the signal source can also be the signal obtained from the first electrode 121 and/or the second electrode 122 on the touch panel 120 when the pen tip section 230 in FIG. 7D is close to the touch panel 120 as the signal source.

The three-layer metal plate in FIG. 17A has the same structure as the three-layer metal plate in FIG. 16A , and the driving signal with a certain frequency is fed into the deformable second metal plate 1120 . Through the capacitive effect with the second metal plate 1120 , the first metal plate 1110 will output the sensed first current value I1 . Likewise, through the capacitive effect with the second metal plate 1120 , the third metal plate 1130 will output the induced second current value I2 .

A first capacitor 221 is formed between the first metal plate 1110 and the second metal plate 1120 , and a second capacitor 222 is formed between the second metal plate 1120 and the third metal plate 1130 . When the second metal plate 1120 is not deformed, the impedance values of the first capacitor 221 and the second capacitor 222 are fixed, so the current quantities I1 and I2 are analyzed, and the proportional value is calculated according to the two current values. When the ratio is a preset value or falls within a default range, it can be known that the second metal plate 1120 is not deformed.

When the second metal plate 1120 is deformed, the impedance and permittivity of the first capacitor 221 and the second capacitor 222 change. Therefore, the proportional value is calculated according to the two current values I1 and I2, and the deformation or stress of the second metal plate 1120 can be inferred according to the change of the proportional value. Accordingly, the method embodiment shown in FIG. 8 can be applied.

Please refer to FIG. 17B , which is a modification of the embodiment shown in FIG. 17A . Wherein the second metal plate 1120 and the third metal plate 1130 are fixed. The driving signal with a certain frequency is fed into the deformable first metal plate 1110 . Through the capacitive effect with the first metal plate 1110, the second metal plate 1120 outputs the sensed first current value I1. Likewise, through the capacitive effect with the first metal plate 1110 , the third metal plate 1130 outputs the induced second current value I2 .

A first capacitor 221 is formed between the first metal plate 1110 and the second metal plate 1120 , and a second capacitor 222 is formed between the first metal plate 1110 and the third metal plate 1130 . When the first metal plate 1110 is not deformed, the impedance values of the first capacitor 221 and the second capacitor 222 are fixed, so the currents I1 and I2 are analyzed, and the proportional value is calculated according to the two current values. When the ratio is a preset value or falls within a default range, it can be known that the first metal plate 1110 is not deformed.

When the first metal plate 1110 is deformed, the impedance and permittivity of the first capacitor 221 and the second capacitor 222 change. Therefore, the proportional value is calculated according to the two current values I1 and I2, and the deformation or stress of the first metal plate 1110 can be inferred according to the change of the proportional value. Accordingly, the method embodiment shown in FIG. 8 can be applied.

Please refer to FIG. 18 , which is a schematic diagram of a modification of the embodiment shown in FIG. 11 . The embodiment shown in Fig. 11 needs to be fed with signals of two frequencies. However, in the embodiment shown in FIG. 18 , like the embodiment shown in FIG. 17A and FIG. 17B , it is only necessary to feed a driving signal of a certain frequency to the second metal plate 1120, or to feed a certain signal without knowing the frequency of the driving signal. How many frequency components the incoming signal has.

A first capacitor 221 is formed between the first metal plate 1110 and the second metal plate 1120 , and a second capacitor 222 is formed between the second metal plate 1120 and the third metal plate 1130 . Since the distance and dielectric constant between the second metal plate 1120 and the third metal plate 1130 do not change, the capacitance and impedance of the second capacitor 222 are fixed. When the first metal plate 1110 is not deformed, the impedance values of the first capacitor 221 and the second capacitor 222 are fixed, so the currents I1 and I2 are analyzed, and the proportional value is calculated according to the two current values. When the ratio is a preset value or falls within a default range, it can be known that the first metal plate 1110 is not deformed. But the permittivity and impedance of the first capacitor 221 will change due to the deformation of the first metal plate. Therefore, when the first metal plate 1110 is deformed by an external force, the first current value I1 will change. Therefore, the ratio relative to the current values I1 and I2 will also change, based on which the deformation or stress of the first metal plate 1110 can be deduced back. Accordingly, the method embodiment shown in FIG. 8 can be applied.

In another embodiment of the present invention, the controller or the circuit in the transmitter 110 may feed a driving signal of a certain frequency to the second metal plate 1120, and calculate the values corresponding to the first capacitor 221 and the second capacitor 222 The current I1 and I2, and then use the ratio of the two to calculate the sensing value, so as to determine the degree of force on the pen tip. In other words, with the aforementioned first impedance Z1 and second impedance Z2, the present invention provides a force sensing capacitor (FSC; force sensing capacitor), which can be used to replace the traditional pressure sensing element, such as the force sensing resistor FSR, Provides a judgment of stress. The pressure sensing capacitor provided by the present invention has the characteristics of low cost and not easily affected by temperature and humidity. In the foregoing figures, the use of a flexible printed circuit board as a force sensing capacitor is disclosed. One of the features of the present invention is to provide other forms of force sensing capacitors.

Please refer to FIG. 19A , which is an exploded schematic diagram of the center section of the force sensing capacitor and its structure of the transmitter 110 . Please note that the scale of Figures 19A-19E has been changed to highlight certain parts. Furthermore, certain fixing elements have been omitted in order to simplify the illustration. In FIG. 19A, the leftmost element is a long rod-shaped pen tip or tip segment 230, and the tip portion may be an electrical conductor. For convenience, the nib section 230 is referred to as the front end of the transmitter 110 or the active pen. When in contact with the front movable element 1971 , the nib section 230 is electrically coupled with the front movable element 1971 . The front movable element 1971 is combined with the female fastener in the middle of the rear movable element 1972 through the middle convex fastener. In one embodiment, the male and female fasteners may include threads. The front movable element 1971 and the rear movable element 1972 can be conductors, or conductive elements, such as metal parts.

Fig. 19A includes a casing 1980, which can annularly contain the above-mentioned front and rear movable elements 1971 and 1972. For the sake of simplicity, Fig. 19A only shows a part of the casing 1980. The portion of the casing 1980 close to the nib section 230 is narrowed into a neck with a smaller diameter, and a shoulder as a load-bearing portion may be included between the neck and the portion of the casing 1980 with a larger diameter. In Fig. 19A, at least one elastic element 1978 is sandwiched between the load-bearing part and the front movable element 1971, and is used to apply force to the housing 1980 and the front movable element 1971 along the long axis of the pen. . The elastic element 1978 can be a spring, a shrapnel or other types of elastic elements. In a certain embodiment, different from FIG. 19A , the elastic element 1978 can surround the movable element 1970 and the neck of the casing 1980 .

In another embodiment, the elastic element 1978 can apply force to the casing 1980 and the rear movable element 1972 along the long axis of the pen. Since the front and rear movable elements 1971 and 1972 can be combined into a movable element 1970 by fasteners, no matter applying force to the front movable element 1971 or the rear movable element 1972, the movable Element 1970 pushes toward nib section 230, thereby pushing nib section 230 forwardly.

When the nib section 230 is applied to the right or rearward in the figure, it will overcome the elastic force of the elastic element 1978 and press the movable element 1970 until a certain part of the movable element 1970 touches the load-bearing part of the housing 1980 until. Therefore, the design provided by the present invention allows the movable element 1970 to move within the neck of the housing 1980 along the long axis of the pen for a stroke. Likewise, since the movable element 1970 is against the nib section 230, the nib section 230 can also move along the long axis of the pen to achieve the same stroke. The length of this stroke can vary depending on the design, say 1mm or 0.5mm. The present invention does not limit the length of the stroke.

At the rear end of the rear end movable member 1972, an insulating film 1973 is provided. At the rear end of the insulating film 1973, a compressible conductor 1974 is also included. In one embodiment, the compressible conductor 1974 can be a conductive rubber or an elastic element mixed with a conductor. Since the insulating film 1973 is sandwiched between the movable element 1970 and the compressible conductor 1974, the movable element 1970, the insulating film 1973, and the compressible conductor 1974 form a capacitor, or a force sensing capacitor . The force sensing capacitor provided in the present application may be the first capacitor 221 in FIGS. 2A to 5 . In short, the force sensing capacitor provided by the present application can be applied to each of the above-mentioned embodiments.

The compressible conductor 1974 is fixed on the conductor base 1975, and the conductor base 1975 can be fixed on the inner peripheral surface of the housing 1980 by fasteners or fasteners. When the movable element 1970 moves to the rear end or to the right, since the position of the conductor base 1975 is fixed, the rear end movable element 1972 will compress the compressible conductor 1974, causing the capacitance value of the above-mentioned force sensing capacitor to change.

Due to the limitation of the shape of the pen, the remaining circuits and battery modules can be located at the rear end of the conductor base 1975 . In FIG. 19A , these elements can be represented by a printed circuit board 1990 . As the first terminal of the force sensing capacitor, the aforementioned movable element 1970 is connected to the printed circuit board 1990 by movable element wires 1977 . And as the second terminal of the force sensing capacitor, the above-mentioned conductive base 1975 is connected to the printed circuit board 1990 through the base wire 1976 .

The base wire 1976 can also be another elastic element. In some embodiments, unlike FIG. 19A , the pedestal wire 1976 can wrap around the conductor pedestal 1975 . In another embodiment, the conductor base 1975 is not conductive, and the base wire 1976 is electrically coupled to the compressible conductor 1974 through the conductor base 1975 .

In an embodiment, the insulating film 1973 may be manufactured by immersing the right end plane of the rear end movable element 1972 in an insulating liquid. After the insulating liquid is air-dried, an insulating film 1973 is naturally formed on the right end plane of the rear movable element 1972 .

Please refer to FIG. 20 , which is a schematic cross-sectional view of the contact surface of the compressible conductor 1974 and the insulating film 1973 in FIG. 19A . FIG. 20 includes four examples of the interface between the compressible conductor 1974 and the insulating film 1973 . The embodiment of (a) is the contact surface of the central protrusion, the embodiment of (b) is the contact surface of a single slope, the embodiment of (c) is the contact surface of the central cone, and the embodiment of (d) is a plurality of protrusions contact surface. Applicants consider that the invention is not limited by the shape of the contact surface.

Although in FIG. 19A, the surface on which the insulating film 1973 is formed on the movable element 1970 is flat, the present invention is not limited thereto. The surface can be a contact surface as shown in FIG. 20, which can be a central protrusion, a single slope, a central cone, or a contact surface with multiple protrusions. In other words, in some embodiments, the surfaces of both the compressible conductor 1974 and the insulating film 1973 are not planar.

Please refer to FIG. 19B , which is a schematic cross-sectional view of the assembled structure shown in FIG. 19A . After combination, the front movable element 1971 and the rear movable element 1972 have been combined into a single movable element 1970 . The movable element 1970 is connected to the load-bearing part of the housing 1980 by an elastic element 1978. The elastic tension of the elastic element 1978 makes the movable element 1970 abut against the nib section 230 in the direction of the front end until the rear end. The movable element 1972 abuts against the load-bearing portion of the housing 1980 until it reaches. There is a movable stroke d between the movable element 1970 and the housing 1980 . At this time, the compressible conductor 1974 is not deformed due to compression, and it is assumed that the capacitance value of the force sensing capacitor is the first capacitance value.

Please refer to FIG. 19C , which is another schematic cross-sectional view of the combined structure shown in FIG. 19A . Compared with FIG. 19B , since the nib segment 230 is pressed toward the rear end, it moves toward the rear end. Affected by the movement of the nib section 230, the movable element 1970 overcomes the elastic tension of the elastic element 1978 and moves to the rear end for the entire stroke d until the front movable element 1971 is against the load-bearing part of the housing 1980. At this time, the compressible conductor 1974 is compressed by the movable element 1970 and the insulating film 1973 to cause deformation, and the capacitance value of the force sensing capacitor is a second capacitance value, which is different from the above-mentioned first capacitance value.

Between the end of travel shown in Figure 19B and Figure 19C, the movable element 1970 can also have an infinite number of positions, or the compressible conductor 1974 can have an infinite number of compression levels, or the compressible conductor 1974 and the insulating film The area of the contact surface of 1973 can have countless size changes, and the capacitance value of the force sensing capacitor can be changed by a certain position or pressure degree or area size change.

Please refer to FIG. 19D , which is an exploded schematic diagram of the center section of the force sensing capacitor and its structure of the transmitter 110 according to an embodiment of the present invention. It differs from FIG. 19B in that the positions of the compressible conductor 1974 and the insulating film 1973 are reversed. In any case, when the movable element 1970 moves to the rear end, the compressible conductor 1974 will be compressed by the insulating film 1973 and the conductor base 1975 to generate deformation. In this way, the capacitance value of the force sensing capacitor can also be changed.

Please refer to FIG. 19E , which is an exploded schematic view of the center section of the force sensing capacitor and its structure of the transmitter 110 according to an embodiment of the present invention. The difference between FIG. 19E and FIG. 19B is that the right end of the rear movable element 1972 is no longer a layer of insulating film 1973, but a piece of compressible insulating material (compressible dielectric material) 1979. For example, insulating rubber, plastic, foam, etc. The conductors connected to the conductor base 1975 are replaced with incompressible conductors, such as metal blocks or graphite. Since the thickness of the compressible insulating material 1979 becomes smaller when being pressed by the movable element 1970 , the distance between the movable element 1970 and the conductor becomes smaller, so the capacitance of the force sensing capacitor changes accordingly. In terms of manufacturing cost, the conductor of FIG. 19E is more expensive than the compressible conductor 1974 of FIG. 19A.

In a variation of the embodiment in FIG. 19E , the contact surface between the conductor and the compressible insulating material 1979 can be made into various shapes as shown in FIG. 20 . In another variation, the contact surface between the compressible insulating material 1979 and the conductor can be made into various shapes as shown in FIG. 20 .

Similar to Figure 19D, the positions of the compressible insulating material 1979 and the conductor may also be interchanged. The compressible insulating material 1979 can be in contact with the conductor base 1975 , and the conductor can be connected to the rear end of the movable element 1970 . When the movable element 1970 moves toward the rear end, the conductor will cause the compressible insulating material 1979 to deform, so that the capacitance value of the force sensing capacitor will change.

Please refer to FIG. 21 , which is a schematic diagram of a pressure sensor according to an embodiment of the present invention. As shown in the figure, the pressure sensor 2110 has two input ends a, b and an output end c, and the two input ends a, b and output end c are electrically connected to the control unit 2120 . The control unit 2120 respectively inputs the first frequency (group) F1 and the second frequency (group) F2 to the pressure sensor 2110 through the input terminals a and b, and receives the output signal of the pressure sensor 2110 through the output terminal c . The control unit 2120 can implement the method shown in FIG. 6 .

When the external pressure drives the capacitor C1 to produce a change in capacitance value, the control unit 2120 can also analyze the pressure change corresponding to the change in capacitance value, so that the pressure sensor 2110 of this embodiment can be widely used in various pressure measurement devices, such as load sensor. In application, the above-mentioned pressure sensor 2110 can also be used in another stylus. After analyzing the received pressure change of the stylus tip through the control unit 2120, the control unit 2120 drives the signal transmitting unit with a predetermined frequency f0, and the Changes in pressure are transmitted to the touch panel.

It is mentioned earlier that the transmitter 110 can send the above electrical signal within a period of time after receiving the lighthouse signal sent by the touch panel 120 , so that the touch processing device 130 can detect the status of the transmitter 110 and its sensors. When the above-mentioned lighthouse signal is not received for a first period of time, the transmitter 110 may enter the power-saving mode, detect whether there is a lighthouse signal at intervals of a detection cycle, and continue to detect again until the lighthouse signal is received A lighthouse signal, wherein the detection period is greater than the transmission period of the lighthouse signal.

In addition, when the lighthouse signal is not received for a second period of time, the transmitter 110 may enter a sleep mode, turning off most of the circuits or controller power of the transmitter 110 until awakened. In an embodiment of the present invention, in the sleep mode, the transmitter 110 shuts down related circuits for receiving lighthouse signals and sending electrical signals. To wake up from the aforementioned sleep mode, a button or switch may be set on the transmitter 110, and the user manually triggers the button or switch to wake up. In another embodiment of the present invention, the embodiment of FIG. 23A and FIG. 23B , or the embodiment of FIG. 24A and FIG. 24B can be used to wake up. After the pen tip section 230 touches the object, the potential of the first port can be changed from low to high, and then the transmitter 110 can send an electrical signal.

In this application, adding one of the functions of the ring electrode 550 can be used to receive the above-mentioned lighthouse signal, and is not limited to receiving the lighthouse signal only through the pen tip section 230 . Since the area and volume of the ring electrode 550 are larger than the tip of the tip section 230 , the lighthouse signal can be received at a place farther away from the touch panel 120 . Or let the touch panel 120 send a lighthouse signal with weaker signal strength to reduce the power consumption of the touch panel 120 . If no lighthouse signal is received for a period of time, the active pen can enter a deeper sleep level to save more power consumption. In a deeper sleep state, the user can restore the transmitter 110 to a normal operating state by touching the pen tip section 230 . The transmitter 110 can be woken up using the embodiment of FIG. 23A and FIG. 23B , or the embodiment of FIG. 24A and FIG. 24B . After the pen tip section 230 touches the object, the potential of the first port can be changed from low to high, and then the transmitter 110 can send an electrical signal.

When multiple transmitters 110 are to be operated on one touch panel 120, the touch panel 120 can send out different lighthouse signals, so that the corresponding transmitter 110 can send out an active signal within a period of time after receiving the lighthouse signal . The above-mentioned transmitter 110 can also adjust the frequency or modulation method of the above-mentioned first signal source 211, second signal source 212, and third signal source 513 according to different lighthouse signals, so as to facilitate the detection by the touch processing device 130. It is detected which signal transmitter 110 is the signal of. Likewise, the above-mentioned different lighthouse signals may adopt different frequencies or modulation methods.

Please refer to FIG. 22 , which is a schematic diagram of a pressure sensor according to an embodiment of the present invention. In this embodiment, the control unit 2220 can also feed a driving signal of a certain frequency to the input terminal c of the pressure sensor 2210, and receive the voltage corresponding to the first capacitor C1 and the second capacitor C2 from the output terminals a and b. The flow rates I1 and I2 are sent to the control unit 2220, and then the proportional value of the two is used to calculate the sensing value through the control unit 20, thereby judging the pressure change. The control unit 2220 can implement the method shown in FIG. 8 . In an application, the driving signal of the predetermined frequency may also be input to the input terminal c of the pressure sensor 2220 from outside.

Please refer to FIG. 23A and FIG. 23B , which are schematic structural diagrams of a simple switch according to an embodiment of the present invention. In the embodiment shown in Figure 23A, there are a total of three circuit board layers. Same as previous illustration, with mechanical ramp on the right. Before the mechanical slope is pushed to the left, the circuit on the upper circuit board is connected to the circuit on the lower circuit board through the conductive line of the middle circuit board. The first contact point p1 of the upper circuit board is respectively connected to the voltage source (such as Vdd) and the first port (GPIO1). The two contacts p2 are in electrical contact. The intermediate circuit board further has a third contact point p3, and the second contact point p2 is electrically connected to the third contact point p3. The fourth contact p4 of the lower circuit board is connected to the ground potential (such as ground), and can also be connected to the second port (GPIO2). In addition, the fourth contact p4 is in electrical contact with the third contact p3. A boost resistor is connected between the voltage source and the first port GPIO1. When the circuit between the upper circuit board and the middle circuit board is short-circuited (the first contact point p1 and the second contact point p2 are in electrical contact), and the circuit between the middle circuit board and the lower circuit board is When short-circuited (the third contact p3 and the fourth contact p4 are in electrical contact), the potential of the first port GPIO1 is a low potential or a ground potential.

Please refer to FIG. 23B , after receiving the pressure, the mechanical slope will be pushed to the left, which will deform the contact end between the upper circuit board and the lower circuit board. After deformation, the circuit between the upper circuit board and the middle circuit board is open (the first contact p1 and the second contact p2 are not in electrical contact), or the circuit between the middle circuit board and the lower circuit board is open (the third contact p3 and the second contact The four contacts p4 are not in electrical contact), the potential of the first port GPIO1 is the potential of the voltage source Vdd.

When the potential of the first port GPIO1 changes from low to high, the transmitter 110 in the sleep mode can be woken up. As mentioned before, the upper circuit board and the lower circuit board can be attached with supporting components, so that after the force of the mechanical slope disappears, the upper circuit board and the lower circuit board can be restored to their original state, and the potential of the first port will be changed from high to low. . The aforementioned first port and second port may be pins of a processor in the transmitter 110 .

Please refer to FIG. 24A and FIG. 24B , which are schematic structural diagrams of a simple switch according to an embodiment of the present invention. The embodiment in FIG. 23A and FIG. 8B has two breakouts, and no matter whether any breakout is open, the potential of the first port can be changed from low to high. The embodiment of Fig. 24A and Fig. 24B has only one breakout, and the circuit is connected from the intermediate circuit board to ground potential. When the circuits of the upper circuit board and the middle circuit board are short-circuited, the potential of the first port GPIO1 is low potential or ground potential. When the circuits of the upper circuit board and the middle circuit board are open, the potential of the first port GPIO1 is the potential of the voltage source. In FIG. 24A and FIG. 24B , the second point p2 is electrically connected to the second port GPIO2.

Please refer to FIG. 25 , which is a schematic diagram of inferring the position of the pen tip provided by the present invention. There are two transmitters 110 in the figure, both of which include the ring electrode 550 and the tip section 230 . The transmitter 110 on the left is perpendicular to the touch panel 120 , and its angle is close to or equal to 90 degrees, and the angle between the transmitter 110 on the right and the touch panel 120 is less than 90 degrees. The surface transparent layer of the touch panel 120 has a thickness. Generally, the surface transparent layer is usually strengthened glass, and the display layer is located below the transparent layer.

Since the transmitter 110 sends electrical signals from the ring electrode 550 and/or the tip section 230 during the R period, the touch processing device 130 can calculate the center of gravity position R_cg of the signal, corresponding to the projection of the ring electrode 550 and the tip section 230 on The center position of the touch panel 120 . Then, during the T0 and T1 periods, the transmitter 110 sends out electrical signals only through the tip section 230 . The touch processing device 130 can calculate the position Tip_cg of the center of gravity of the signal, which corresponds to the center position of the tip segment 230 projected on the touch panel 120 .

As shown in the transmitter 110 on the left of FIG. 25 , when it is perpendicular to the touch panel 120 , R_cg is equal to or very close to Tip_cg. Therefore, it can be deduced that the tip of the pen touches the surface transparent layer of the touch panel 120 , and the Tip_surface is equal to the above-mentioned R_cg and Tip_cg. It can also be inferred that the point where the tip of the pen is projected on the display layer of the touch panel 120, Tip_display is equal to the above-mentioned R_cg, Tip_cg, and Tip_surface.

As shown in the transmitter 110 on the right side of FIG. 25 , R_cg is not equal to Tip_cg due to an inclination angle with the touch panel 120 . It is conceivable that when the distance between the two is farther, it means that the inclination angle is larger. According to different designs of the transmitter 110, the touch processing device 130 can look up a table or calculate the above-mentioned inclination angle according to the above-mentioned two center of gravity positions R_cg and Tip_cg, or calculate that the tip of the pen tip section 230 touches the surface of the touch panel 120 The points Tip_surface and Tip_display of the transparent layer and the display layer.

Please refer to FIG. 26 , which is a schematic diagram of calculating an inclination angle according to an embodiment of the present invention. This embodiment is applicable to the transmitter 110 shown in FIG. 5 , which has a ring electrode 550 . This embodiment is applicable to the signal modulation modes shown in FIG. 9E and FIG. 9F . The touch processing device 130 shown in FIG. 1 executes the method shown in this embodiment, and the embodiment in FIG. 25 can also be referred to.

In step 2610 , calculate the first center position R_cg of the ring electrode 550 and/or the tip section 230 on the touch panel 120 . In step 2620 , calculate the second center position Tip_cg of the tip segment 230 on the touch panel 120 . The present invention does not limit the order in which the two steps 2610 and 2620 are performed. Next, in optional step 2630 , the inclination angle is calculated according to the first center position R_cg and the second center position Tip_cg. In optional step 2640 , according to the first central position R_cg and the second central position Tip_cg, the surface position Tip_surface of the tip segment 230 on the surface layer of the touch panel 120 is calculated. In optional step 2650 , the display position Tip_display of the tip segment 230 on the display layer of the touch panel 120 is calculated according to the first center position R_cg and the second center position Tip_cg. The present invention does not limit that steps 2630 to 2650 must be executed, but at least one of them must be executed. The present invention also does not limit the order in which steps 2630 to 2650 are performed.

Please refer to FIG. 27 , which is a schematic diagram showing an embodiment of the interface responding to the strokes of the aforementioned tilt angle and/or pressure. Figure 27 contains five sets of horizontal row embodiments (a) to (e), each group contains three inclination angles (inclination), the leftmost vertical row represents the situation of the active pen without inclination angle, the second inclination of the right example The angles are larger than the first inclination angle of the middle example, and the directions of the inclination angles are all toward the right. The so-called strokes here are usually displayed in the coloring range of the screen in the drawing software.

It is worth noting that in this embodiment, it is not necessary to use the annular electrodes shown in FIG. 25 and FIG. 26 to calculate the inclination angle and the points Tip_surface and Tip_display where the tip of the tip section 230 touches the surface transparent layer and the display layer of the touch panel 120 . In one embodiment, other sensors can be installed on the pen to measure the tilt angle. For example, the inertial measurement unit (IMU, inertial measurement unit), gyroscope, accelerometer, etc. made of micro-electromechanical systems measure the inclination angle and transmit it through various wired or wireless methods. The inclination and/or various data derived from the inclination are transmitted to the computer system of the touch panel, so that the computer system implements various embodiments shown in FIG. 10 . The above-mentioned wired or wireless transmission method can be an industrial standard or a self-defined standard, such as Bluetooth wireless communication protocol or Wireless USB.

It is assumed here that in FIG. 27 , the active pens of each embodiment touch the touch panel with the same pressure. In a certain embodiment, the intersection point of each horizontal line and the straight line represents the point Tip_surface at which the tip segment actually touches the surface transparent layer of the touch panel. In another embodiment, the intersection point of each horizontal line and the straight line represents the position Tip_cg of the center of gravity of the pen tip signal. Of course, in other embodiments, it may also represent the point Tip_display where the pen tip is projected on the display layer of the touch panel. For the sake of convenience, it can be collectively referred to as the tip representative point Tip, and the tip representative point can be the above-mentioned Tip_display, Tip_surface or Tip_cg.

In embodiment (a), the shape of the stroke changes from a circle to an ellipse as the inclination angle increases. In other words, the distance between the bifocals of the ellipse is related to the inclination. The greater the inclination, the greater the distance between the bifoci of the ellipse. And the central point of the ellipse is the above-mentioned representative point Tip of the pen tip.

The difference between the embodiment (b) and the embodiment (a) is that the intersection point of the central extension line of the elliptical bifocal point and the elliptical line is the above-mentioned representative point Tip of the pen tip. The difference between the embodiment (c) and the embodiment (a) is that one of the focal points of the elliptical bifocal point is the above-mentioned representative point Tip of the pen tip. Embodiments (d) and (e) differ from embodiment (a) in that the shape of the strokes is changed from oval to teardrop. The teardrop-shaped tip of the embodiment (d) is the representative point Tip of the above-mentioned pen tip. In the embodiment (e), the tip of the teardrop shape is somewhere toward the tail end, which is the above-mentioned representative point Tip of the pen tip.

Although in FIG. 27 , two shapes and different points represented are cited, the present application does not limit the shape of the strokes and the type of points represented. In addition, in an embodiment, the pressure of the pen tip can control the size of the above-mentioned shape, for example, the pressure is related to the radius of the circle, or the distance between the bifoci of the ellipse. In a word, the man-machine interface can change the displayed content according to the pen tip pressure value and/or inclination angle of the active pen.

In addition to changing the shape of the stroke, the above-mentioned pen tip pressure value and/or tilt angle value can also represent different commands. For example, in the 3D design software, the color temperature of the light source, or the intensity of the light source, or the irradiation width of the light source can be adjusted through the tilt angle. Or when the pen tip selects an object, the direction of the object can be adjusted through the direction of the tilt angle, and the rotation direction of the object can also be adjusted according to the angle of the tilt angle.

It should be noted that the present invention does not limit the relationship between the tilt angle and its related value to be linear. In some embodiments, the relationship between the inclination angle and its relative value may be non-linear, and may be compared using a look-up table or a quadratic function.

Please refer to FIG. 28 , which is a schematic diagram of another embodiment of reflecting the above-mentioned inclination and/or pressure strokes on the display interface. Fig. 28 includes two embodiments (a) and (b), each embodiment includes left and right strokes. The stroke on the left has an inclination angle of zero and contains five small to large circles C1 to C5. The size of the circles is determined according to the pressure value of the pen tip. The stroke on the right has a fixed inclination angle, and consists of five ellipses E1 to E5 ranging from small to large. The size of the ellipses is also determined according to the pressure value of the pen tip, and is the same as the pressure value of C1 to C5. In addition, according to the directions of their inclination angles, the axis directions of these ovals E1 to E5 are all inclined by 30 degrees, and the direction of the inclination angle (inclination direction) is different from the direction of the stroke center (stroke direction) . In this picture, there is a 15-degree angle between the two.

The embodiment (a) of FIG. 28 corresponds to the embodiment (a) of FIG. 27 , that is, the central point of the ellipse corresponds to the above-mentioned tip representative point Tip. Similarly, the embodiment (b) of FIG. 28 corresponds to the embodiment (b) of FIG. 27 , and the intersection point of the central extension line of the elliptical bifocal point and the elliptical line is the above-mentioned representative point Tip. It can be seen from the two embodiments in FIG. 28 that under the same pressure change, the overall shape of the strokes will be different due to the difference in the inclination angle. In this way, the pressure value and inclination angle can be used to express the strokes of some soft and elastic nibs, such as brush pens or quill pens.

One of the features of the present invention is to provide a transmitter. The transmitter includes: a first element for receiving a signal with a first frequency group, wherein the first impedance value of the first element changes according to a force; a second element for receiving a signal with a second frequency group A set of signals, the second element has a second impedance value; and a nib section, used to receive the input of the first element and the second element, and send out an electrical signal, wherein the nib section is used to receive the force.

In one embodiment, the second impedance value does not change according to the force. In another embodiment, the second impedance value also changes according to the force.

In an embodiment, the above-mentioned transmitter may further include a third switch connected in series with the third element, wherein the first element is connected in parallel with the third switch and the third element. The above transmitter may further include a fourth switch connected in series with the fourth element, wherein the first element is connected in parallel with the fourth switch and the fourth element.

In another embodiment, the above-mentioned transmitter may further include a third switch and a third element connected in series with the third switch, wherein the second element is connected in parallel with the third switch and the third element. The above transmitter may further include a fourth switch connected in series with the fourth element, wherein the second element is connected in parallel with the fourth switch and the fourth element.

In an embodiment, the above-mentioned first frequency group includes one or more first frequencies, the second frequency group includes one or more second frequencies, and the first frequencies are different from the second frequencies.

In one embodiment, when the force is zero, the first impedance value is equal to the second impedance value. In one embodiment, when the force is zero, the tip section does not touch any object.

In an embodiment, the ratio of the first signal strength M1 of the first frequency group to the second signal strength M2 of the second frequency group in the electrical signal is related to the force. Wherein, the ratio value can be one of the following: M1/M2, M2/M1, M1/(M1+M2), M2/(M1+M2), (M1-M2)/(M1+M2), or ( M2-M1)/(M1+M2).

In one embodiment, when the ratio is equal to or falls within the first range, the force is zero. When the ratio is equal to or falls within the second range, the third switch is closed, and the first element and the third element are connected in parallel. When the ratio is equal to or falls within the third range, the fourth switch is closed, and the first element and the fourth element are connected in parallel. When the proportional value is equal to or falls within the fourth range value, the third switch and the fourth switch are in closed circuit, and the first element, the third element and the fourth switch are connected in parallel. In another embodiment, when the ratio is equal to or falls within a fifth range, the third switch is closed, and the second element is connected in parallel with the third element. When the ratio is equal to or falls within the sixth range, the fourth switch is closed, and the second element and the fourth element are connected in parallel. When the ratio is equal to or falls within the seventh range, the third switch and the fourth switch are closed, and the second element is connected in parallel with the third element and the fourth element.

In one embodiment, the first element is a force sensing capacitor, and the second element is a capacitor.

In an embodiment, the above-mentioned transmitter may further include a ring-shaped electrode surrounding the tip section, and the ring-shaped electrode is not electrically coupled with the tip section. In an embodiment, the aforementioned ring-shaped electrode may include one or more separate electrodes.

One of the characteristics of the present invention is to provide a method for controlling a transmitter. The transmitter includes a first element, a second element, and a nib section, wherein the nib section is used to receive the first element and the second element. For the input of two components, the signaling method includes: making the first impedance value of the first component change according to the force received by the pen tip segment; providing a signal of the first frequency group to the first component; providing a second The signal of the frequency group is sent to the second element; and the pen tip segment sends out an electric signal.

One of the characteristics of the present invention is to provide a judging method for judging the force received by the transmitter, including: receiving the electrical signal sent by the transmitter; calculating the frequency of the first frequency group in the electrical signal a first signal strength M1; calculating a second signal strength M2 of a second frequency group in the electrical signal; and calculating the force according to a ratio of the first signal strength M1 to the second signal strength M2.

In an embodiment, the above-mentioned step of calculating the force may include one of the following: look-up table method, linear interpolation method or quadratic curve method.

In one embodiment, the method further includes judging the state of the third switch according to the proportional value. In another embodiment, the method further includes determining the state of the fourth switch according to the proportional value.

One of the characteristics of the present invention is to provide a touch processing device for judging the force received by the transmitter, including: an interface for connecting to a plurality of first electrodes and a plurality of second electrodes on the touch panel Two electrodes, wherein the plurality of first electrodes and the plurality of second electrodes form a plurality of sensing points; at least one demodulator is used to calculate electrical signals received by one of the plurality of sensing points , the first signal strength M1 of the first frequency group and the second signal strength M2 of the second frequency group; and the calculation unit is used to calculate according to the ratio of the first signal strength M1 to the second signal strength M2 It should be stressed.

In one embodiment, the calculation unit further determines the state of the third switch according to the proportional value. In another embodiment, the calculation unit further determines the state of the fourth switch according to the proportional value.

One of the characteristics of the present invention is to provide a touch control system for judging the force received by the transmitter, including: a transmitter, a touch panel and a touch processing device, wherein the transmitter further includes a first A component is used to receive a signal with a first frequency group, wherein the first impedance value of the first component changes according to a force; a second component is used to receive a signal with a second frequency group, wherein the first The second element has a second impedance value; and the tip section is used to receive the input of the first element and the second element and send out an electrical signal, wherein the tip section is used to receive the force, and the touch panel includes a plurality of The first electrode and the plurality of second electrodes, wherein the plurality of first electrodes and the plurality of second electrodes form a plurality of sensing points, the touch processing device further includes: an interface for connecting to the touch panel The plurality of first electrodes and the plurality of second electrodes, and at least one demodulator, are used to calculate the first signal of the first frequency group among the electrical signals received by one of the plurality of sensing points. The intensity M1 and the second signal intensity M2 of the second frequency group; and a calculation unit, configured to calculate the force according to the ratio of the first signal intensity M1 to the second signal intensity M2.

One of the characteristics of the present invention is to provide a transmitter, including: a first element, used to receive a signal source, wherein the first impedance value of the first element changes according to the force; a second element, used to receive The signal source, wherein the second element has a second impedance value; the tip section is used to receive the force; the control unit is used to calculate the first current value I1 returned by the first element and the second element respectively and a second current value I2, and calculate the force according to the ratio of the first current value I1 to a second current value I2; and a communication unit, configured to transmit the force value.

In one embodiment, the second impedance value does not change according to the force. In another embodiment, the second impedance value also changes according to the force.

In one embodiment, the communication unit further includes a wireless communication unit for transmitting the stress value. In another embodiment, the communication unit further includes a wired communication unit for transmitting the force value.

In one embodiment, the signal source is the wired communication unit. In one embodiment, the signal source is a signal received by the nib segment.

In an embodiment, the ratio of the first current value I1 to the second current value I2 is related to the force. Wherein, the ratio value can be one of the following: I1/I2, I2/I1, I1(I1+I2), I2/(I1+I2), (I1-I2)/(I1+I2) or (I2- I1)/(I1+I2).

In one embodiment, when the force is zero, the first impedance value is equal to the second impedance value.

In an embodiment, the above-mentioned transmitter may further include a third switch connected in series with the third element, wherein the first element is connected in parallel with the third switch and the third element. The above transmitter may further include a fourth switch connected in series with the fourth element, wherein the first element is connected in parallel with the fourth switch and the fourth element. In one embodiment, when the ratio is equal to or falls within the first range, the force is zero. When the ratio is equal to or falls within the second range, the third switch is closed, and the first element and the third element are connected in parallel. When the ratio is equal to or falls within the third range, the fourth switch is closed, and the first element and the fourth element are connected in parallel. When the proportional value is equal to or falls within the fourth range value, the third switch and the fourth switch are in closed circuit, and the first element, the third element and the fourth switch are connected in parallel.

In another embodiment, the above-mentioned transmitter may further include a third switch and a third element connected in series with the third switch, wherein the second element is connected in parallel with the third switch and the third element. The above transmitter may further include a fourth switch connected in series with the fourth element, wherein the second element is connected in parallel with the fourth switch and the fourth element. When the ratio is equal to or falls within the fifth range, the third switch is closed, and the second element and the third element are connected in parallel. When the ratio is equal to or falls within the sixth range, the fourth switch is closed, and the second element and the fourth element are connected in parallel. When the ratio is equal to or falls within the seventh range, the third switch and the fourth switch are closed, and the second element is connected in parallel with the third element and the fourth switch.

In one embodiment, the control unit further determines the state of the third switch according to the proportional value. In another embodiment, the control unit further judges the state of the fourth switch according to the proportional value.

In an embodiment, the communication unit is further configured to transmit the state of the third switch. In another embodiment, the communication unit is further configured to transmit the state of the fourth switch.

One of the characteristics of the present invention is to provide a signaling method for controlling a transmitter. The transmitter includes a first component, a second component, and a pen tip section. The signaling method includes: making the first component of the first component The impedance value changes according to the force received by the pen tip segment; provide signal sources to the first element and the second element; calculate the first current value I1 and the second current value returned by the first element and the second element respectively second current value I2; calculate the force according to the ratio of the first current value I1 to the second current value I2; and transmit the force value.

One of the characteristics of the present invention is to provide a touch control system for judging the force received by the transmitter, including: a transmitter; and a host, wherein the transmitter further includes: a first component for The signal source is received, wherein the first impedance value of the first element changes according to the force; the second element is used to receive the signal source, wherein the second element has a second impedance value; the tip section is used to receive the affected Force; a control unit for calculating the first current value I1 and the second current value I2 returned by the first element and the second element respectively, and according to the ratio of the first current value I1 to the second current value I2 value, to calculate the force; and a communication unit, used to transmit the force value to the host, and the host further includes a host communication unit to receive the force value.

In one embodiment, the touch control system further includes a touch panel and a touch processing device, wherein the touch processing device is used to connect to the touch panel for detecting the relative relationship between the transmitter and the touch panel location, and communicate the relative location to the host.

In one embodiment, the control unit further determines the state of the third switch according to the proportional value. In another embodiment, the control unit further judges the state of the fourth switch according to the proportional value. In an embodiment, the communication unit is configured to transmit the state of the third switch. In another embodiment, the communication unit is further configured to transmit the state of the fourth switch. In one embodiment, the host communication unit is used for receiving the state of the third switch. In another embodiment, the host communication unit is used for receiving the state of the fourth switch.

One of the characteristics of the present invention is to provide a force sensor, comprising: a first input terminal for receiving a signal with a first frequency group; a second input terminal for receiving a signal with a second frequency group; and an output terminal for sending out an electric signal, wherein the ratio of the first signal strength M1 of the first frequency group to the second signal strength M2 of the second frequency group in the electric signal is related to the force.

In an embodiment, the ratio value may be one of the following: M1/M2, M2/M1, M1/(M1+M2), M2/(M1+M2), (M1-M2)/(M1+M2 ), or (M2-M1)/(M1+M2).

In one embodiment, the force sensor further includes a third switch. In one embodiment, when the ratio is equal to or falls within the first range, the force is zero. When the proportional value is equal to or falls within the second range value, the third switch is closed.

In another embodiment, the force sensor further includes a fourth switch. When the ratio is equal to or falls within the third range, the fourth switch is closed. When the ratio is equal to or falls within the fourth range, the third switch and the fourth switch are closed.

One of the characteristics of the present invention is to provide a force sensor, comprising: an input end for receiving a signal source; a first output end for outputting a signal having a first current value I1; and a second output end for A signal with a second current value I2 is output, wherein the ratio of the first current value I1 to the second current value I2 is related to the force.

In one embodiment, the ratio can be one of the following: I1/I2, I2/I1, I1(I1+I2), I2/(I1+I2), (I1-I2)/(I1+I2) Or (I2-I1)/(I1+I2).

In one embodiment, the force sensor further includes a third switch. In one embodiment, when the ratio is equal to or falls within the first range, the force is zero. When the proportional value is equal to or falls within the second range value, the third switch is closed.

In another embodiment, the force sensor further includes a fourth switch. When the ratio is equal to or falls within the third range, the fourth switch is closed. When the ratio is equal to or falls within the fourth range, the third switch and the fourth switch are closed.

One of the characteristics of the present invention is to provide a force sensor, comprising: a first circuit board, including a first metal plate, for receiving signals of a first frequency group; a second circuit board, parallel to the first circuit board , including a second metal plate and a third metal plate that are not in contact with each other, the third metal plate is used to receive signals of the second frequency group, and the second metal plate is used to output electrical signals, wherein the second metal plate is located at between the first metal plate and the third metal plate; and a slope mechanism used to bend the first circuit board upwards of the first circuit board.

One of the characteristics of the present invention is to provide a force sensor, including: a first circuit board, including a first metal plate, for outputting a signal with a first current value; a second circuit board, parallel to the first circuit board , including a second metal plate and a third metal plate that are not in contact with each other, the third metal plate is used to output a signal with a second current value, and the second metal plate is used to input a signal source, wherein the second metal plate is located at between the first metal plate and the third metal plate; and a slope mechanism, used for bending the first circuit board upwards of the first circuit board.

In one embodiment, a portion of the first metal plate is located where the first circuit board is bent.

In one embodiment, the force sensor further includes a supporting element for supporting the first circuit board.

In one embodiment, the first metal plate, the second metal plate, and the third metal plate are parallel to each other. In another embodiment, the distance between the first metal plate and the second metal plate is equal to the distance between the second metal plate and the third metal plate.

In one embodiment, the first metal plate and the second metal plate form a first capacitor, and the second metal plate and the third metal plate form a second capacitor. In another embodiment, when the first circuit board is not bent, the first capacitor and the second capacitor have the same impedance value.

In one embodiment, both the first circuit board and the second circuit board are printed circuit boards.

One of the characteristics of the present invention is to provide a force sensor, including: a first circuit board, including a first metal plate and a third metal plate not in contact with each other, respectively used to receive the signal of the first frequency group and the second The signal of the frequency group; the second circuit board, which is parallel to the first circuit board, includes a second metal plate for outputting electrical signals; and a slope mechanism, used to bend the first circuit board to the top of the first circuit board circuit board.

One of the characteristics of the present invention is to provide a force sensor, including: a first circuit board, including a first metal plate and a third metal plate that are not in contact with each other, and are respectively used to output currents with a first current value and a second current value The second circuit board is parallel to the first circuit board and includes a second metal plate for inputting a signal source; and a bevel mechanism is used to bend the first circuit board to the upper side of the first circuit board.

In one embodiment, the force sensor further includes a supporting element for supporting the first circuit board.

In one embodiment, the first metal plate and the second metal plate are parallel to each other, and the second metal plate and the third metal plate are parallel to each other. In another embodiment, the distance between the first metal plate and the second metal plate is equal to the distance between the second metal plate and the third metal plate.

In one embodiment, the first metal plate and the second metal plate form a first capacitor, and the second metal plate and the third metal plate form a second capacitor. In another embodiment, when the first circuit board is not bent, the first capacitor and the second capacitor have the same impedance value.

In one embodiment, both the first circuit board and the second circuit board are printed circuit boards.

One of the characteristics of the present invention is to provide a force sensor, including: a first circuit board, including a first metal plate and a third metal plate that are not in contact with each other, and are used to receive the signals of the first frequency group and the second The signal of the frequency group; the second circuit board, which is parallel to the first circuit board, includes a second metal plate for outputting electrical signals; the third circuit board, which is parallel to the second circuit board, includes a fourth metal plate and The fifth metal plate not in contact with each other is used to receive the signal of the first frequency group and the signal of the second frequency group respectively; and the slope mechanism is used to bend the first circuit board to the top of the first circuit board the circuit board, and bend the third circuit board to the bottom of the third circuit board.

In one embodiment, the force sensor further includes a first supporting element for supporting the first circuit board. In another embodiment, the force sensor further includes a second supporting element for supporting the third circuit board.

In one embodiment, the first metal plate and the second metal plate are parallel to each other, the second metal plate and the third metal plate are parallel to each other, the fourth metal plate and the second metal plate are parallel to each other, and the first metal plate is parallel to the second metal plate. The second metal plate and the fifth metal plate are parallel to each other. In another embodiment, the distance between the first metal plate and the second metal plate is equal to the distance between the second metal plate and the third metal plate, and the distance between the fourth metal plate and the second metal plate is equal to the distance between the second metal plate and the second metal plate. The distance between the second metal plate and the fifth metal plate.

In one embodiment, the first metal plate is located above the fourth metal plate. In another embodiment, the third metal plate is located above the fifth metal plate.

In one embodiment, the area of the first metal plate is equal to the area of the fourth metal plate. In another embodiment, the area of the third metal plate is equal to the area of the fifth metal plate.

In one embodiment, the first metal plate and the second metal plate form a first capacitor, the second metal plate and the third metal plate form a second capacitor, and the fourth metal plate and the second metal plate form a capacitor. The third capacitor, the second metal plate and the fifth metal plate form a fourth capacitor. In another embodiment, when the first circuit board is not bent, the first capacitor and the second capacitor have the same impedance value. In another embodiment, when the third circuit board is not bent, the third capacitor and the fourth capacitor have the same impedance value. In yet another embodiment, the impedance of the first capacitor and the third capacitor are the same, and the impedance of the second capacitor and the fourth capacitor are the same.

In one embodiment, the first circuit board, the second circuit board and the third circuit board are all printed circuit boards.

One of the characteristics of the present invention is to provide a force sensor, comprising: a first circuit board, including a first metal plate, for receiving signals of a first frequency group; a second circuit board, parallel to the first circuit board , including a second metal plate, a third metal plate, a fourth metal plate and a fifth metal plate that are not in contact with each other and arranged in parallel in sequence, the third metal plate and the fourth metal plate are used to receive the second frequency group signal, the second metal plate and the fifth metal plate are electrically coupled to each other, and are used to output electrical signals; the third circuit board, including a sixth metal plate, is used to receive signals of the first frequency group, wherein the second circuit board is sandwiched between the first circuit board and the third circuit board; Bend the third circuit board below.

In one embodiment, the force sensor further includes a first supporting element for supporting the first circuit board. In another embodiment, the force sensor further includes a second supporting element for supporting the third circuit board.

In one embodiment, the first metal plate and the second metal plate are parallel to each other, the second metal plate and the third metal plate are parallel to each other, the fourth metal plate and the fifth metal plate are parallel to each other, and the first metal plate is parallel to the fifth metal plate. The fifth metal plate and the sixth metal plate are parallel to each other. In another embodiment, the distance between the first metal plate and the second metal plate is equal to the distance between the second metal plate and the third metal plate, and the distance between the fourth metal plate and the fifth metal plate is equal to the The distance between the fifth metal plate and the sixth metal plate.

In one embodiment, the first metal plate is located above the sixth metal plate.

In one embodiment, the area of the first metal plate is equal to the area of the sixth metal plate. In another embodiment, the area of the second metal plate is equal to the area of the fifth metal plate. In yet another embodiment, the area of the third metal plate is equal to the area of the fourth metal plate.

In one embodiment, the first metal plate and the second metal plate form a first capacitor, the second metal plate and the third metal plate form a second capacitor, and the fourth metal plate and the fifth metal plate form a capacitor. For the third capacitor, the fifth metal plate and the sixth metal plate form a fourth capacitor. In another embodiment, when the first circuit board is not bent, the first capacitor and the second capacitor have the same impedance value. In another embodiment, when the third circuit board is not bent, the third capacitor and the fourth capacitor have the same impedance value. In yet another embodiment, the impedance of the first capacitor and the fourth capacitor are the same, and the impedance of the second capacitor and the third capacitor are the same.

In one embodiment, the first circuit board, the second circuit board and the third circuit board are all printed circuit boards.

One of the characteristics of the present invention is to provide a force sensor, comprising: a first metal plate, a second metal plate and a third metal plate arranged in parallel without contact with each other, wherein the first metal plate is used to receive the first metal plate A signal of a frequency group, the third metal plate is used to receive a signal of a second frequency group, and the second metal plate is used to output an electric signal, wherein the end of the second metal plate can be bent under force.

One of the characteristics of the present invention is to provide a force sensor, comprising: a first metal plate, a second metal plate and a third metal plate arranged in parallel without contact with each other, wherein the first metal plate is used for outputting The signal of the first current value, the third metal plate is used for outputting the signal with the second current value, and the second metal plate is used for inputting the signal source, wherein one end of the second metal plate can be bent under force.

In one embodiment, the distance between the first metal plate and the second metal plate is equal to the distance between the second metal plate and the third metal plate.

In one embodiment, the first metal plate and the second metal plate form a first capacitor, and the second metal plate and the third metal plate form a second capacitor. In another embodiment, when the second metal plate is not bent, the impedance values of the first capacitor and the second capacitor are the same.

One of the characteristics of the present invention is to provide a force sensor, including: a first metal plate, a second metal plate and a third metal plate arranged in parallel without contact with each other, wherein the first metal plate is used to output electric current Signals, the second metal plate is used to receive signals of the first frequency group, the third metal plate is used to receive signals of the second frequency group, wherein one end of the first metal plate can be bent under force.

One of the characteristics of the present invention is to provide a force sensor, including: a first metal plate, a second metal plate and a third metal plate arranged in parallel without contact with each other, wherein the first metal plate is used for inputting signals source, the second metal plate is used to output a signal with a first current value, and the third metal plate is used to output a signal with a second current value, wherein one end of the first metal plate can be bent under force.

In one embodiment, the distance between the first metal plate and the second metal plate is equal to the distance between the second metal plate and the third metal plate.

In one embodiment, the first metal plate and the second metal plate form a first capacitor, and the second metal plate and the third metal plate form a second capacitor. In another embodiment, when the first metal plate is not bent, the impedance values of the first capacitor and the second capacitor are the same.

One of the characteristics of the present invention is to provide a transmitter, comprising: a movable element, which is used to move a distance along the axial direction of the transmitter; an insulating material, used for the rear end of the movable element; And a conductor, located at the rear end of the insulating material, is used to form a force-sensing capacitance with the movable element and the insulating material.

In one embodiment, the transmitter further includes a pen tip section located at the front end of the movable element. In one embodiment, the tip section is a conductor electrically coupled with the movable element. In another embodiment, the tip section is used to send out electrical signals, and the signal strength of a certain frequency group in the electrical signals is related to the impedance value of the force sensing capacitor.

In one embodiment, the transmitter further includes an elastic element and a housing, the elastic element is used to provide elastic force between the movable element and the housing, so that when the movable element receives elastic force, it moves to the stroke Front end.

In one embodiment, the insulating substance is an insulating film, and the conductor includes a compressible conductor and a conductor base. In another embodiment, the insulating substance is a compressible insulating material.

In one embodiment, the contact surface between the insulating material and the conductor includes one of the following: a single slope, a plurality of protrusions, a conical slope and a single protrusion. In another embodiment, the contact surface between the conductor and the insulating material comprises one of the following: a single slope, a plurality of protrusions, a conical slope and a single protrusion.

In one embodiment, the insulating substance and the conductor are located in the inner chamber of the casing. In another embodiment, the inner chamber is cylindrical.

In one embodiment, the movable element includes a front movable element and a rear movable element, wherein the front movable element contacts and is electrically coupled to the nib segment.

In one embodiment, the transmitter further includes a circuit board, wherein the circuit board is electrically coupled to the conductor through the base wire, and the circuit board is electrically coupled to the movable element through the movable element wire. In another embodiment, the movable element is wired to the elastic element.

In one embodiment, the elastic element does not surround the movable element. In another embodiment, the base wire does not surround the conductor.

One of the characteristics of the present invention is to provide a circuit switch, comprising a first circuit board, a second circuit board and a third circuit board arranged parallel to each other in sequence; and a double-slope device, wherein the first circuit board of the first circuit board One end and the first end of the third circuit board are respectively against the two slopes of the double-slope device, the first end of the second circuit board is not in contact with the double-slope device, and the second circuit board's The first end includes a circuit, and the second point and the third point above and below the circuit are respectively short-circuited and electrically coupled with the first point of the first circuit board and the fourth point of the third circuit board.

In one embodiment, when the double-slope device moves toward the second circuit board, the first circuit board and the third circuit board are pressed by the double-slope device to bend upwards and downwards, so that the first circuit board One point is open-circuited and electrically uncoupled to the second point and the third point is open-circuited to the fourth point and electrically uncoupled.

In one embodiment, the first point is connected to the first port and the high potential in parallel, and the fourth point is connected to the low potential. When the first point is short-circuited with the second point and the third point is short-circuited with the fourth point, the The first port is low potential, and when the first point is open to the second point or the third point is open to the fourth point, the first port is high potential.

In one embodiment, the dual bevel device is attached to the pen tip section of the transmitter.

In one embodiment, the circuit is located on the first edge of the second circuit board.

One of the characteristics of the present invention is to provide a circuit switch, comprising a first circuit board, a second circuit board and a third circuit board arranged parallel to each other in sequence; and a double-slope device, wherein the first circuit board of the first circuit board One end and the first end of the third circuit board are respectively against the two slopes of the double-slope device, the first end of the second circuit board is not in contact with the double-slope device, and the second circuit board's The first end includes a circuit, and the second point on the circuit is short-circuited and electrically coupled to the first point on the first circuit board.

In one embodiment, when the double-slope device moves toward the second circuit board, the first circuit board and the third circuit board are pressed by the double-slope device to bend upwards and downwards, so that the first circuit board One point is open circuited and not electrically coupled to the second point.

In one embodiment, the first point is connected in parallel to the first port and the high potential, and the second point is connected to the low potential. When the first point and the second point are short-circuited, the first port is at the low potential. When the When the first point and the second point are open-circuited, the first port is at high potential.

In one embodiment, the dual bevel device is attached to the pen tip section of the transmitter.

In one embodiment, the circuit is located on the first edge of the second circuit board.

One of the characteristics of the present invention is to provide a stylus, comprising: a control unit, a pen tip section and a circuit switch, the circuit switch comprising a first circuit board, a second circuit board and a third circuit arranged parallel to each other in sequence board; and a double-slope device connected to the nib section, wherein the first end of the first circuit board and the first end of the third circuit board are respectively against the two slopes of the double-slope device, and the second circuit board The first end of the second circuit board is not in contact with the double-slope device, the first end of the second circuit board contains a circuit, and the second and third points above and below the circuit are respectively connected to the first point and the third point of the first circuit board. The fourth point of the third circuit board is short-circuited and electrically coupled, the first point is connected in parallel to the first port of the control unit and a high potential, the fourth point is connected to a low potential, and the first port is a low potential.

In one embodiment, when the double-slope device moves toward the second circuit board, the first circuit board and the third circuit board are pressed by the double-slope device to bend upwards and downwards, so that the first circuit board One point is open-circuited and electrically uncoupled to the second point and the third point is open-circuited to the fourth point and electrically uncoupled, and the first port is a high potential.

In one embodiment, when the first port changes from a low potential to a high potential, the control unit is woken up.

One of the characteristics of the present invention is to provide a stylus, comprising: a control unit, a pen tip section and a circuit switch, the circuit switch comprising a first circuit board, a second circuit board and a third circuit arranged parallel to each other in sequence board; and a double-slope device connected to the nib section, wherein the first end of the first circuit board and the first end of the third circuit board are respectively against the two slopes of the double-slope device, and the second circuit board The first end of the second circuit board is not in contact with the double-slope device, the first end of the second circuit board contains a circuit, the second point of the circuit is short-circuited and electrically coupled to the first point of the first circuit board, the The first point is connected in parallel to the first port of the control unit and the high potential, the second point is connected to the low potential, and the first port is low potential.

In one embodiment, when the double-slope device moves toward the second circuit board, the first circuit board and the third circuit board are pressed by the double-slope device to bend upwards and downwards, so that the first circuit board One point is open-circuited and not electrically coupled with the second point, and the first port is at high potential.

In one embodiment, when the first port changes from a low potential to a high potential, the control unit is woken up.

One of the characteristics of the present invention is to provide a signaling method for controlling a transmitter, including: sending an electrical signal of a first period within a first period; and sending an electrical signal of a second period within a second period, wherein the first The signal frequency groups contained in the electrical signal of the first period and the electrical signal of the second period are different.

One of the characteristics of the present invention is to provide a transmitter, which is used to send out a first time period electric signal in a first time period; and send out a second time period electric signal in a second time period, wherein the first time period electric signal and The signal frequency groups included in the second period electric signal are different.

One of the characteristics of the present invention is to provide a touch control system, which includes: a transmitter, a touch panel, and a touch processing device connected to the touch panel, used for according to the electrical signal of the first period and the second Two-period electrical signal detection for the transmitter, wherein the transmitter is used to send the first-period electrical signal within the first period; and to transmit the second-period electrical signal within the second period, wherein the first The signal frequency groups included in the electrical signal of the period are different from those contained in the electrical signal of the second period.

In an embodiment, the above-mentioned one signal frequency group includes signals of one or more frequencies.

In one embodiment, the first time period is after the transmitter detects a lighthouse signal. In another embodiment, there is a first delay time between the lighthouse signal detection period and the first period.

In one embodiment, there is a second delay time between the first time period and the second time period.

In one embodiment, the second period of time is followed by a third delay time.

In one embodiment, a jamming signal is detected before the transmitter detects the lighthouse signal. In another embodiment, the interference signal includes a signal having a coherent frequency with the electrical signal of the first period and the electrical signal of the second period.

Please refer to the above Table 1. In one embodiment, when the pen tip of the transmitter is not in contact with an object, the first signal source and the second signal source of the transmitter simultaneously send out the same signal frequency group.

Please refer to the above Table 1. In one embodiment, when the pen tip segment is not in contact with an object and the first switch of the transmitter is open, the first signal source and the second signal source are simultaneously sent out the same first signal. A signal frequency group, when the pen tip segment is not in contact with an object and the first switch is short-circuited, the first signal source and the second signal originate from the first period to simultaneously send out the same second signal frequency group, wherein the The first signal frequency group is different from the second signal frequency group.

Please refer to the above Table 1. In one embodiment, when the pen tip section is not in contact with an object and the second switch of the transmitter is open, the first signal source and the second signal source are simultaneously sent out the same first signal. A signal frequency group, when the pen tip segment is not in contact with an object and the second switch is short-circuited, the first signal source and the second signal originate from the second period and simultaneously send out the same third signal frequency group, wherein The first signal frequency group is different from the third signal frequency group.

Please refer to the above-mentioned Table 2. In one embodiment, when the pen tip touches an object, the first signal source and the second signal source of the transmitter are respectively sent out different signals during the second period and the first period. Signal frequency groups.

Please refer to the above Table 2. In one embodiment, when the pen tip section touches an object and the first switch of the transmitter is open circuit, the second signal originates from the first time period to send out the first signal frequency group, When the pen tip section touches an object and the first switch is short-circuited, the second signal originates from the first period and sends out a second signal frequency group, wherein the first signal frequency group is different from the second signal frequency group .

Please refer to the above Table 2. In one embodiment, when the pen tip section touches an object and the second switch of the transmitter is open, the first signal originates from the second period and sends out a third signal frequency group, When the nib section touches an object and the second switch is short-circuited, the first signal originates from the second period and sends out the second signal frequency group, wherein the third signal frequency group is different from the second signal frequency group Group.

In one embodiment, the ratio of the first signal strength M1 and the second signal strength M2 sent by the first signal source and the second signal source in the second period and the first period respectively corresponds to the transmitter Force.

In one embodiment, the signaling method further includes causing the ring electrode to send an electric signal for a zeroth period during the zeroth period, wherein the zeroth period is after the transmitter detects the lighthouse signal. In another embodiment, there is a zeroth delay time between the lighthouse signal detection period and the zeroth period.

In an embodiment, the ring-shaped electrode does not send out electrical signals during the first period and the second period.

In one embodiment, the electrical signal of the zeroth period is different from the signal frequency groups contained in the electrical signal of the first period and the electrical signal of the second period.

One of the characteristics of the present invention is to provide a signaling method for controlling a transmitter, including: sending an electrical signal of a first period within a first period; and sending an electrical signal of a second period within a second period, wherein the first The signal frequency group included in the electrical signal of the first period is the same as that contained in the electrical signal of the second period.

One of the characteristics of the present invention is to provide a transmitter, which is used to send out a first time period electric signal in a first time period; and send out a second time period electric signal in a second time period, wherein the first time period electric signal and The signal frequency groups contained in the electrical signal of the second period are the same.

One of the characteristics of the present invention is to provide a touch control system, which includes: a transmitter, a touch panel, and a touch processing device connected to the touch panel, used for according to the electrical signal of the first period and the second Two-period electrical signals detect the transmitter, wherein the transmitter is used to send the first-period electrical signal during the first period; and send the second-period electrical signal during the second period, wherein the first-period electrical signal The signal is the same as the signal frequency group contained in the electrical signal of the second period.

In an embodiment, the above-mentioned one signal frequency group includes signals of one or more frequencies.

In one embodiment, the first time period is after the transmitter detects a lighthouse signal. In another embodiment, there is a first delay time between the lighthouse signal detection period and the first period.

In one embodiment, there is a second delay time between the first time period and the second time period.

In one embodiment, the second period of time is followed by a third delay time.

In one embodiment, a jamming signal is detected before the transmitter detects the lighthouse signal. In another embodiment, the interference signal includes a signal having a coherent frequency with the electrical signal of the first period and the electrical signal of the second period.

Please refer to Table 3 above. In one embodiment, when the pen tip of the transmitter is not in contact with an object, the first signal source and the second signal source of the transmitter simultaneously send out the same signal frequency group.

Please refer to Table 3 above. In one embodiment, when the pen tip section is not in contact with an object and the first switch of the transmitter is open, the first signal source and the second signal source are simultaneously sent out the same first signal. A signal frequency group, when the pen tip section is not in contact with an object and the first switch is short-circuited, the first signal source and the second signal source simultaneously send out the same second signal frequency group, wherein the first signal frequency group group is different from the second signal frequency group.

Please refer to the above Table 3. In one embodiment, when the pen tip section is not in contact with an object and the second switch of the transmitter is open, the first signal source and the second signal source are simultaneously sent out the same first signal. A signal frequency group, when the pen tip section is not in contact with an object and the second switch is short-circuited, the first signal source and the second signal source simultaneously send out the same third signal frequency group, wherein the first signal frequency The group is different from the third signal frequency group.

Please refer to Table 4 above. In one embodiment, when the pen tip touches an object, the first signal source and the second signal source of the transmitter are respectively sent out the same signal in the second period and the first period. Signal frequency groups.

Please refer to Table 4 above. In one embodiment, when the pen tip touches an object and the first switch of the transmitter is open, the second signal originates from the first time period to send out the first signal frequency group, When the pen tip section touches an object and the first switch is short-circuited, the second signal originates from the first period and sends out a second signal frequency group, wherein the first signal frequency group is different from the second signal frequency group .

Please refer to Table 4 above. In one embodiment, when the pen tip touches an object and the second switch of the transmitter is open, the first signal originates from the second period and sends out a third signal frequency group, When the nib section touches an object and the second switch is short-circuited, the first signal originates from the second period and sends out the second signal frequency group, wherein the third signal frequency group is different from the second signal frequency group Group.

In one embodiment, the signaling method further includes causing the ring electrode to send an electric signal for a zeroth period during the zeroth period, wherein the zeroth period is after the transmitter detects the lighthouse signal. In another embodiment, there is a zeroth delay time between the lighthouse signal detection period and the zeroth period.

In an embodiment, the ring-shaped electrode does not send out electrical signals during the first period and the second period.

In one embodiment, the electrical signal of the zeroth period is the same as the signal frequency group included in the electrical signal of the first period and the electrical signal of the second period.

In one embodiment, the ratio of the first signal strength M1 and the second signal strength M2 sent by the first signal source and the second signal source in the second period and the first period respectively corresponds to the transmitter Force.

One of the characteristics of the present invention is to provide a detection method for detecting a transmitter, including: detecting the first period electrical signal sent by the transmitter within the first period; and detecting within the second period Detecting the electrical signal of the second period sent by the transmitter, wherein the electrical signal of the first period is different from the signal frequency group contained in the electrical signal of the second period.

One of the characteristics of the present invention is to provide a touch processing device for detecting a transmitter, which is used to connect a touch panel, and the touch panel includes a plurality of first electrodes, a plurality of second electrodes and the overlapping parts thereof. A plurality of sensing points, the touch processing device is used to detect the first period electrical signal sent by the transmitter during the first period; and detect the second electrical signal sent by the transmitter during the second period The electrical signal of a time period, wherein the electrical signal of the first time period and the electrical signal of the second time period contain different signal frequency groups.

One of the characteristics of the present invention is to provide a touch control system, the touch control system includes: a transmitter, a touch panel and a touch processing device connected to the touch panel, for according to the electrical signal and the first period of time The second period electric signal detects the sender, wherein the sender is used to send the first time period electric signal during the first time period; and sends out the second time period electric signal within the second time period, wherein the first time period electric signal The signal is different from the signal frequency group included in the second period electric signal.

In an embodiment, the above-mentioned one signal frequency group includes signals of one or more frequencies.

In one embodiment, the first time period is after the touch panel sends out a lighthouse signal. In another embodiment, there is a first delay time between the sending period of the lighthouse signal and the first period.

In one embodiment, there is a second delay time between the first time period and the second time period.

In one embodiment, the second period of time is followed by a third delay time. In one embodiment, other detection steps are further included after the second period.

In one embodiment, jamming signals are detected prior to sending out signals to the lighthouse. In another embodiment, an interference signal is detected after the first period of time. In a further embodiment, after the second time period, an interference signal is detected. In another embodiment, the interference signal includes a signal having a coherent frequency with the electrical signal of the first period and the electrical signal of the second period.

Please refer to the above Table 1. In one embodiment, when the transmitter sends out a single signal frequency group at the same time, it is determined that the pen tip of the transmitter is not in contact with an object.

Please refer to the above Table 1. In one embodiment, when the sender sends out the same first signal frequency group in the first period, it is determined that the pen tip section does not touch the object and the first switch of the sender Open circuit, when the transmitter sends out the same second signal frequency group at the same time in the first period, it is judged that the nib segment is not in contact with the object and the first switch is short-circuited, wherein the first signal frequency group is different from the first signal frequency group Two signal frequency groups.

Please refer to the above Table 1. In one embodiment, when the sender sends out the same first signal frequency group in the second period, it is determined that the pen tip section does not touch the object and the second switch of the sender open circuit, when the transmitter sends out the same third signal frequency group at the same time in the second period, it is judged that the nib segment is not in contact with the object and the second switch is short-circuited, wherein the first signal frequency group is different from the first signal frequency group Three signal frequency groups.

Please refer to the above-mentioned Table 2. In one embodiment, when the electrical signal of the first period and the electrical signal of the second period include different signal frequency groups, it is determined that the tip segment touches an object.

Please refer to the above-mentioned Table 2. In one embodiment, when the transmitter sends out the first signal frequency group in the first period, it is determined that the pen tip section is in contact with an object and the first switch of the transmitter is open. When the sender sends out a second signal frequency group during the first period, it is determined that the nib segment touches an object and the first switch of the sender is short-circuited, wherein the first signal frequency group is different from the second signal frequency group.

Please refer to the above-mentioned Table 2. In one embodiment, when the transmitter sends out the third signal frequency group in the second period, it is determined that the pen tip section is in contact with an object and the second switch of the transmitter is open. When the sender sends out the second signal frequency group during the second time period, it is determined that the pen tip section touches an object and the second switch is short-circuited, wherein the third signal frequency group is different from the second signal frequency group.

In one embodiment, it further includes: calculating the ratio of the first signal strength M1 and the second signal strength M2 of the electrical signal in the first period and the electrical signal in the second period; and calculating the sending signal according to the ratio. The force of the device.

In one embodiment, it further includes detecting the zeroth period electrical signal sent by the transmitter during the zeroth period, wherein the zeroth period is after sending out the lighthouse signal. In another embodiment, there is a zeroth delay time between the sending period of the lighthouse signal and the zeroth period.

In one embodiment, the electrical signal of the zeroth period is different from the signal frequency groups contained in the electrical signal of the first period and the electrical signal of the second period.

One of the characteristics of the present invention is to provide a detection method for detecting a transmitter, including: detecting the first period electrical signal sent by the transmitter within the first period; and detecting within the second period Detecting the electrical signal of the second period sent by the transmitter, wherein the electrical signal of the first period is the same as the signal frequency group included in the electrical signal of the second period.

One of the characteristics of the present invention is to provide a touch processing device for detecting a transmitter, which is used to connect a touch panel, and the touch panel includes a plurality of first electrodes and a plurality of second electrodes and their overlapping positions A plurality of sensing points are formed, the touch processing device is used to detect the first period electrical signal sent by the transmitter during the first period; and detect the second period electrical signal sent by the transmitter during the second period Two-period electrical signals, wherein the first-period electrical signal and the second-period electrical signal contain the same signal frequency group.

One of the characteristics of the present invention is to provide a touch control system, which includes: a transmitter, a touch panel, and a touch processing device connected to the touch panel, wherein the touch panel includes a plurality of first The plurality of sensing points formed by the electrode and the plurality of second electrodes and their overlaps, the touch processing device is used to detect the first period electrical signal sent by the transmitter in the first period; and in the second period The electrical signal of the second period sent by the transmitter is detected within the period, wherein the electrical signal of the first period is the same as the signal frequency group included in the electrical signal of the second period.

In an embodiment, the above-mentioned one signal frequency group includes signals of one or more frequencies.

In one embodiment, the first time period is after the touch panel sends out a lighthouse signal. In another embodiment, there is a first delay time between the sending period of the lighthouse signal and the first period.

In one embodiment, there is a second delay time between the first time period and the second time period.

In one embodiment, the second period of time is followed by a third delay time. In one embodiment, other detection steps are further included after the second period.

In one embodiment, jamming signals are detected prior to sending out signals to the lighthouse. In another embodiment, an interference signal is detected after the first period of time. In another embodiment, interference signals are detected after the second period of time. In another embodiment, the interference signal includes a signal having a coherent frequency with the electrical signal of the first period and the electrical signal of the second period.

Please refer to Table 3 above. In one embodiment, when the electrical signal of the first period and the electrical signal of the second period have the same single signal frequency group, it is determined that the pen tip of the transmitter is not in contact with an object.

Please refer to the above Table 3. In one embodiment, when the sender sends out the first signal frequency group, it is determined that the pen tip segment is not in contact with the object and the first switch of the sender is open. When a second signal frequency group is sent out, it is determined that the pen tip section is not in contact with an object and the first switch of the transmitter is short-circuited, wherein the first signal frequency group is different from the second signal frequency group.

Please refer to the above Table 3. In one embodiment, when the transmitter sends out the first signal frequency group, it is determined that the pen tip segment is not in contact with the object and the second switch of the transmitter is open. When the third signal frequency group is sent out, it is determined that the pen tip section is not in contact with an object and the second switch of the transmitter is short-circuited, wherein the first signal frequency group is different from the third signal frequency group.

Please refer to Table 4 above. In one embodiment, when the electrical signal of the first period and the electrical signal of the second period have the same single signal frequency group, and the first signal strength of the electrical signal of the first period When the ratio between M1 and the second signal strength M2 of the electrical signal in the second period is not within the first range, it is determined that the pen tip of the transmitter touches the object.

Please refer to the above Table 4. In one embodiment, when the transmitter sends out the first signal frequency group in the first period and the ratio value is not within the first range, it is determined that the pen tip section touches an object and the The first switch of the sender is open circuit, when the sender sends out the second signal frequency group in the first period and the ratio value is not in the first range, it is determined that the pen tip section touches the object and the sender’s The first switch is short-circuited, wherein the first signal frequency group is different from the second signal frequency group.

Please refer to Table 4 above. In one embodiment, when the transmitter sends out the third signal frequency group in the second period and the ratio value is not within the first range, it is determined that the pen tip section touches an object and the The second switch of the sender is open circuit. When the sender sends out the second signal frequency group in the second period and the ratio value is not in the first range, it is determined that the pen tip section touches the object and the sender’s The second switch is short-circuited, wherein the third signal frequency group is different from the second signal frequency group.

In one embodiment, it further includes: respectively calculating the ratio of the first signal strength M1 and the second signal strength M2 of the electrical signal of the first period and the electrical signal of the second period; and calculating the transmission according to the ratio. The force of the letter.

In one embodiment, it further includes detecting the zeroth period electrical signal sent by the transmitter during the zeroth period, wherein the zeroth period is after sending out the lighthouse signal. In another embodiment, there is a zeroth delay time between the sending period of the lighthouse signal and the zeroth period.

In one embodiment, the electrical signal of the zeroth period is the same as the signal frequency group included in the electrical signal of the first period and the electrical signal of the second period.

One of the characteristics of the present invention is to provide a transmitter, comprising: a pen tip segment; and a ring electrode surrounding the pen tip segment, and the pen tip segment is not electrically coupled to the ring electrode.

In one embodiment, the ring electrode includes a plurality of disconnected electrodes.

In one embodiment, at the zero time period, the ring electrode and the pen tip segment send out electrical signals simultaneously. In another embodiment, during the first period of time, the pen tip section emits an electrical signal, but the ring electrode does not emit an electrical signal. In another embodiment, the first period is after the zeroth period.

In one embodiment, the electrical signals emitted by the ring electrode and the pen tip segment include the same set of signal frequency groups. In another embodiment, the ring electrode and the pen tip segment respectively send out different signal frequency groups.

One of the characteristics of the present invention is to provide a method for detecting the position of a transmitter, wherein the transmitter includes a pen tip section and a ring electrode surrounding the pen tip section, and the pen tip section is electrically different from the ring electrode. Coupling, the detection method includes: detecting the electrical signal simultaneously sent by the ring electrode and the pen tip section in the zeroth period; and detecting the electrical signal sent by the pen tip section in the first period.

One of the characteristics of the present invention is to provide a touch processing device for detecting the position of the transmitter, wherein the transmitter includes a pen tip section and a ring electrode surrounding the pen tip section, and the pen tip section and the ring electrode Electrically uncoupled, the touch processing device is connected to a touch panel, and the touch panel includes a plurality of sensing points formed by a plurality of first electrodes, a plurality of second electrodes and their overlaps, and the touch processing device is used Detecting the electrical signal simultaneously sent by the annular electrode and the nib section in the zeroth period; and detecting the electrical signal sent by the nib section in the first period.

One of the characteristics of the present invention is to provide a touch control system, including a transmitter, a touch panel, and a touch processing device connected to the touch panel, wherein the transmitter includes a pen tip section and a pen surrounding the pen tip section A ring electrode, the pen tip section is not electrically coupled to the ring electrode, the touch panel includes a plurality of first electrodes and a plurality of second electrodes and a plurality of sensing points formed by their overlaps, the touch processing The device is used for detecting the electric signal sent out by the annular electrode and the pen tip section simultaneously in the zeroth period; and detecting the electric signal sent out by the pen tip section in the first period.

In one embodiment, the electrical signals emitted by the ring electrode and the pen tip segment include the same set of signal frequency groups. In another embodiment, the ring electrode and the pen tip segment respectively send out different signal frequency groups.

In one embodiment, the first period is after the zeroth period.

In one embodiment, the method further includes calculating the first center-of-gravity position of the transmitter according to the electrical signal detected in the zeroth period. In another embodiment, the method further includes calculating a second center-of-gravity position of the transmitter according to the electrical signal detected during the first period.

In one embodiment, according to the first center of gravity position and the second center of gravity position, the surface position of the transmitter touching the touch panel is calculated, wherein the surface position is the pen tip axis of the transmitter and the touch panel. The location where the surface layers of the panels meet.

In one embodiment, according to the first center of gravity position and the second center of gravity position, the display position where the transmitter touches the touch panel is calculated, wherein the display position is the pen tip axis of the transmitter and the touch panel. The position of the display layer intersection of the panel.

In one embodiment, according to the first center-of-gravity position and the second center-of-gravity position, an inclination angle at which the transmitter touches the touch panel is calculated.

One of the characteristics of the present invention is to provide a method for calculating the position of the transmitter contacting the surface of the touch panel, the method includes: receiving the first center of gravity position of the transmitter, the first center of gravity position is based on the signaling The second center of gravity position of the receiver is calculated based on the electrical signal sent by the pen tip section; and according to the The first center of gravity position and the second center of gravity position are used to calculate the surface position, wherein the surface position is a position where the pen tip axis of the transmitter intersects with the surface layer of the touch panel.

One of the characteristics of the present invention is to provide a method for calculating the display position where the sender touches the touch panel, the method includes: receiving the first center of gravity position of the sender, the first center of gravity position is based on the sender The second center of gravity position of the receiver is calculated based on the electrical signal sent by the pen tip section; and according to the The first center of gravity position and the second center of gravity position are used to calculate the display position, wherein the display position is a position where the pen tip axis of the transmitter intersects with the display layer of the touch panel.

One of the characteristics of the present invention is to provide a method for calculating the inclination angle of the transmitter contacting the touch panel, the method includes: receiving the first center of gravity position of the transmitter, the first center of gravity position is based on the signaling The second center of gravity position of the receiver is calculated based on the electrical signal sent by the pen tip section; and according to the The first center-of-gravity position and the second center-of-gravity position are used to calculate the inclination angle.

In one embodiment, the method further includes calculating the first center-of-gravity position in the zeroth time period. In another embodiment, the method further includes calculating the second center of gravity position during the first period. In one embodiment, the first period is after the zeroth period. In one embodiment, the ring electrode and the pen tip segment respectively send out different signal frequency groups.

One of the characteristics of the present invention is to provide a display method, including: receiving the position of the transmitter; receiving the tilt angle of the transmitter; and determining the display range according to the position and the tilt angle.

In one embodiment, the position includes one of the following: a first center of gravity position; a second center of gravity position; a surface position; and a display position, wherein the first center of gravity position is based on the ring electrode and the tip section of the transmitter The position of the second center of gravity is calculated based on the electrical signal sent by the pen tip section, and the surface position is the intersection of the pen tip section axis of the transmitter and the surface layer of the touch panel position, the display position is the position where the pen tip axis of the transmitter intersects with the display layer of the touch panel. In one embodiment, the ring electrode and the pen tip segment respectively send out different signal frequency groups.

In an embodiment, the display range includes an ellipse. In another embodiment, the location is at one of: the center of the ellipse; one of the foci of the ellipse; and one of the intersections of a line of bifoci of the ellipse and the ellipse. In one embodiment, the on-line direction of the elliptical bifocal corresponds to the direction of the tilt angle.

In one embodiment, the display range includes a teardrop shape. In another embodiment, the location is at one of: the center of the teardrop; the apex of the teardrop; and the endpoint of the teardrop. In one embodiment, the direction of the tear drop corresponds to the direction of the slope angle.

In one embodiment, the direction of the display range corresponds to the direction of the tilt angle. In another embodiment, the size of the display range corresponds to the size of the tilt angle. In yet another embodiment, the color of the display range corresponds to one of the following: the magnitude of the tilt angle; and the direction of the tilt angle.

In one embodiment, receiving the force of the transmitter is further included, and the size of the display range corresponds to the force.

One of the characteristics of the present invention is to provide a signaling method for a transmitter, including: when the force sensor of the transmitter does not sense force, sending a first electrical signal with a first signal strength; and A second electrical signal having a second signal strength is emitted when the force sensor senses a force, wherein the first signal strength is greater than the second signal strength.

In one embodiment, the force sensor comprises a stylus segment of the transmitter.

In one embodiment, the transmitter further includes a ring electrode, wherein the first electrical signal is sent by the tip section and the ring electrode, and the second electrical signal is sent by the tip section.

One of the characteristics of the present invention is to provide a transmitter, including: a force sensor; and a control module, used to: when the force sensor does not sense a force, make the transmitter send a signal with a first signal strength and when the force sensor senses a force, causing the transmitter to send out a second electrical signal with a second signal strength, wherein the first signal strength is greater than the second signal strength.

One of the characteristics of the present invention is to provide a transmitter, the transmitter includes a nib section, wherein the transmitter is used to generate a first signal according to a degree of force corresponding to the nib section, and through the The nib segment sends out an electric signal including the first signal, and a property of the electric signal corresponds to the force degree.

One of the characteristics of the present invention is to provide a signaling method for a transmitter, wherein the transmitter includes a nib section, and the signaling method includes: generating a first force according to a degree of force corresponding to the nib section a signal; and sending an electric signal including the first signal through the nib segment, a property of the electric signal corresponding to the degree of force.

In one embodiment, the electrical signal and the first signal are analog signals. In one embodiment, the attribute is an intensity ratio value of the first signal and a second signal among the electrical signals.

In one embodiment, the first signal is a signal of a first frequency group among the electrical signals, and the second signal is a signal of a second frequency group among the electrical signals. In one embodiment, the transmitter further includes a first element and a second element, wherein the first element is used to generate the first signal according to the force level, and the second element is used to generate the second signal. Signal.

In one embodiment, the transmitter further includes an amplifier for receiving the first signal and the second signal output by the first element and the second element respectively, amplifying and outputting the electrical signal to the pen tip part. In another embodiment, the transmitter further includes a first amplifier for receiving and amplifying an output signal from a first signal source to the first element; and a second amplifier for receiving and amplifying a second signal The output signal of the source is sent to the first element.

In one embodiment, the first signal is the electrical signal within a first time, and the second signal is the electrical signal within a second time. In one embodiment, the first signal and the second signal have the same frequency group. In one embodiment, the transmitter further includes a first element and a second element, wherein the first element is used to generate the first signal according to the force level, and the second element is used to generate the second signal. Signal. In one embodiment, the transmitter further includes an amplifier for receiving the first signal and the second signal output by the first element and the second element respectively, amplifying and outputting the electrical signal to the pen tip part.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, can use the technical content disclosed above to make some changes or modify them into equivalent embodiments with equivalent changes, but any content that does not depart from the technical solution of the present invention, according to the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments by the technical essence still belong to the scope of the technical solutions of the present invention.

Claims (19)

1. A transmitter, characterized in that it includes a nib section, wherein the transmitter is used to generate a first signal according to a force level corresponding to the nib section, and sends out a signal including the first pen nib section through the nib section. An electrical signal of a signal, a property of which corresponds to the magnitude of the force. 2. The transmitter according to claim 1, wherein the electrical signal and the first signal are analog signals. 3. The transmitter according to claim 1, wherein the attribute is a strength ratio value of the first signal and a second signal among the electrical signals. 4. The transmitter according to claim 3, wherein the first signal is a signal of a first frequency group in the electrical signal, and the second signal is a second frequency in the electrical signal group signal. 5. The transmitter according to claim 4, characterized in that it further comprises a first element and a second element, wherein the first element is used to generate the first signal according to the degree of force, the second The element is used to generate the second signal. 6. The transmitter according to claim 5, further comprising an amplifier for respectively receiving the first signal and the second signal outputted by the first element and the second element, and amplified The electrical signal is output to the nib segment. 7. The transmitter according to claim 5, further comprising: a first amplifier for receiving and amplifying an output signal of a first signal source to the first element; and A second amplifier is used for receiving and amplifying an output signal of a second signal source to the first element. 8. The transmitter according to claim 3, wherein the first signal is the electrical signal within a first time period, and the second signal is the electrical signal within a second time period. 9. The transmitter according to claim 8, wherein the first signal and the second signal have the same frequency group. 10. The transmitter according to claim 8, further comprising a first element and a second element, wherein the first element is used to generate the first signal according to the force level, the second The element is used to generate the second signal. 11. The transmitter according to claim 10, further comprising an amplifier for respectively receiving the first signal and the second signal outputted by the first element and the second element, and amplified The electrical signal is output to the nib segment. 12. A method for sending a letter by a sender, wherein the sender includes a nib section, and the method for sending a letter includes: generating a first signal according to a force degree corresponding to the pen tip segment; and An electrical signal including the first signal is sent out through the nib section, and a property of the electrical signal corresponds to the force degree. 13. The signaling method according to claim 12, wherein the electrical signal and the first signal are analog signals. 14. The signaling method according to claim 12, wherein the attribute is an intensity ratio value of the first signal and a second signal among the electrical signals. 15. The signaling method according to claim 14, wherein the first signal is a signal of a first frequency group in the electrical signal, and the second signal is a second frequency in the electrical signal group signal. 16. The signaling method according to claim 15, wherein the transmitter further comprises a first element and a second element, wherein the first element is used to generate the first signal according to the degree of force , the second element is used to generate the second signal. 17. The signaling method according to claim 14, wherein the first signal is the electrical signal within a first time period, and the second signal is the electrical signal within a second time period. 18. The signaling method according to claim 17, wherein the first signal and the second signal have the same frequency group. 19. The signaling method according to claim 18, wherein the transmitter further comprises a first element and a second element, wherein the first element is used to generate the first signal according to the degree of force , the second element is used to generate the second signal.