CN104238778A - Touch input method - Google Patents

Abstract

The touch input method provided by the present invention is used to sense the position and pressure of an electromagnetic pen on a touch screen. The touch input method includes the following steps: providing a touch panel with a sensing area and an edge area; and arranging a conductive coil. In the edge area on the touch panel, the conductive coil has a multi-turn circuit wound by a conductor wire, and the multi-turn circuit surrounds the sensing area; a conductor is provided to the electromagnetic pen The pen tip; the pen tip contacts the sensing area of the touch panel; the touch panel detects a touch position in the sensing area; and the electromagnetic pen transmits an electromagnetic signal to the conductive coil to generate a pressure sense signal.

Description

touch input method

【Technical field】

The present invention relates to a touch input system and method thereof, in particular to a touch input system and method capable of simultaneously detecting touch position and pressure.

【Background technique】

Touch technology can be divided into Resistive, Capacitive, Surface Acoustic Wave and Optics according to the sensing principle. With the convenience of use and the demand for multi-touch, Capacitive touch technology using finger input has become the mainstream of touch solutions for electronic products.

The capacitive touch panel uses a layer of transparent metal electrode pattern coated on the surface of the substrate, and the material of the substrate is not limited to hard or soft. When a finger approaches or touches the touch panel, the finger is a conductor and has static electricity, so the finger will form a coupling capacitance with the metal electrode pattern, and the electrostatic capacitance of the electrode on the touch point of the touch panel will increase. Changes occur, thereby improving the voltage or current of the electrodes. Then by comparing the voltage difference between adjacent electrodes, the position of the touch point can be calculated.

However, although it is convenient to use fingers to input, it is obviously difficult to achieve the above-mentioned requirements through fingers if lines of different thicknesses are to be drawn on the touch screen, or for touch recognition between fine positions. Therefore, in order to increase the precision of touch control, a solution using a stylus is proposed. However, the principle of the existing common capacitive stylus is mostly to set a conductive plastic or conductive rubber tip on the front edge of the metal pen tube. Although it can achieve more accurate touch than using finger input, the capacitive touch However, the control pen cannot display the corresponding line thickness on the screen according to the strength of the pen, which still has shortcomings in use.

【Content of invention】

In view of this, the object of the present invention is to provide a kind of touch input system, it can carry out touch input on a touch panel that is wound around a conductive coil through an electromagnetic stylus with a conductive stylus, then the high precision of touch can be achieved and The corresponding line thickness can be displayed according to the strength of the pen.

Another object of the present invention is to provide a touch input method, by providing a conductor to the tip of the electromagnetic pen and arranging a conductive coil on the touch panel, so that the accuracy of the touch can be greatly improved and the pen can be written The size of the force can show the corresponding line thickness.

To achieve the above object, the touch input system provided by the present invention includes a touch panel, a conductive coil, and an electromagnetic pen. The touch panel has a sensing area and an edge area. The conductive coil is disposed on the touch panel, the conductive coil has a multi-turn circuit wound by a conductor wire, and the multi-turn circuit is located at the edge area and surrounds the sensing area. The electromagnetic pen is used to transmit an electromagnetic signal to the conductive coil to sense the touch pressure, wherein the electromagnetic pen includes a tip, and the tip is used to touch the sensing area to perform position sensing, and the pen tip is a conductor. At the same time, the electromagnetic pen has a plurality of buttons and a pressure-sensitive structure of the pen tip, so the oscillation frequency of the internal circuit can be changed according to the writing force of the user on the electromagnetic pen. In other embodiments, the conductive coil may be disposed under the sensing area of the touch panel.

In a preferred embodiment, the touch panel includes a capacitive touch panel. In addition, the conductor wire is made of transparent conductive material, or made of copper, silver, gold, or aluminum.

In a preferred embodiment, the multi-turn circuit is between 3 turns and 10 turns. In this embodiment, the spacing between the turns of the lines is equal. In other embodiments, the distance between the multi-turn circuits gradually increases or decreases gradually along the direction away from the sensing area.

In a preferred embodiment, the touch input system further includes a microcontroller. The microcontroller is electrically connected to the conductive coil, the microcontroller controls the conductive coil to transmit an electromagnetic energy to the electromagnetic pen, and the microcontroller switches the conductive coil to receive the electromagnetic energy The electromagnetic signal emitted by a pen, wherein the electromagnetic pen is a battery-free electromagnetic pen.

In order to achieve the above object, the touch input method provided by the present invention is used to sense the position and pressure of an electromagnetic pen on a touch screen, and the touch input method includes the following steps: providing a touch sensor with a sensing area and an edge area Panel; a conductive coil is arranged on the edge area on the touch panel, the conductive coil has a multi-turn circuit wound by a conductor wire, and the multi-turn circuit surrounds the sensing area; a conductor is provided to the pen tip of the electromagnetic pen; the pen tip contacts the sensing area of the touch panel; the touch panel detects a touch position in the sensing area; and the electromagnetic pen transmits an electromagnetic signal to the Conductive coil to generate a pressure-sensitive signal. In other embodiments, the conductive coil may be disposed under the sensing area of the touch panel.

In a preferred embodiment, the specific steps of the pressure sensing signal include: the electromagnetic pen transmits a frequency offset signal; the conductive coil receives the frequency offset signal; providing a microprocessor to receive and process the a frequency offset signal; and the microprocessor generates the pressure-sensitive signal according to the frequency offset signal. Furthermore, the step of generating the microprocessor to process the frequency offset signal includes: comparing the difference between the frequency offset signal and a fundamental frequency; and performing analog-to-digital conversion on the difference to Get a numeric value. In addition, the magnitude of the digital value represents the pen force of the electromagnetic pen.

In a preferred embodiment, before the step of the pen tip touching the sensing area of the touch panel, the touch input method further includes: the electromagnetic pen transmits a fundamental frequency signal to the conductive coil to generate a suspension signal. The specific steps of generating the suspension signal include: the electromagnetic pen transmits a base frequency signal; the conductive coil receives the base frequency signal; a microprocessor is provided to receive and process the base frequency signal; and the microprocessor The processor generates the suspension signal according to the base frequency signal.

Likewise, in a preferred embodiment, the distances between the multi-turn lines are equal. In other embodiments, the distance between the multi-turn circuits gradually increases or decreases gradually along the direction away from the sensing area.

Compared with the prior art, the present invention uses an electromagnetic pen with a conductive pen tip to contact the capacitive touch panel to achieve high precision of touch. In addition, the pressure-sensitive signal can be generated through the touch panel wound with the conductive coil and the electromagnetic pen, so as to simply detect the pen force.

In order to make the above and other purposes, features, and advantages of the present invention more obvious and understandable, the detailed description is as follows in conjunction with the accompanying drawings:

【Description of drawings】

FIG. 1 shows a schematic block diagram of a touch input system according to a first preferred embodiment of the present invention;

FIG. 2A shows a schematic diagram of a conductive coil according to an embodiment of the present invention;

FIG. 2B is a schematic diagram of a conductive coil according to an embodiment of the present invention;

FIG. 2C shows a schematic diagram of a conductive coil according to an embodiment of the present invention;

Fig. 3 depicts a schematic block diagram of another implementation aspect of the first preferred embodiment of the present invention;

Fig. 4 depicts a schematic block diagram of yet another implementation aspect of the first preferred embodiment of the present invention;

FIG. 5 shows a schematic block diagram of yet another implementation aspect of the first preferred embodiment of the present invention;

FIG. 6 shows a schematic block diagram of a touch input system according to a second preferred embodiment of the present invention;

FIG. 7 shows a schematic block diagram of another implementation aspect of the second preferred embodiment of the present invention;

FIG. 8 shows a flowchart of a touch input method in a preferred embodiment of the present invention;

FIG. 9 shows a specific flowchart of step S50 and step S60 in FIG. 3;

FIG. 10 shows a specific flowchart of step S50 and step S60 according to another implementation aspect;

FIG. 11 shows a specific flowchart of step S50 and step S60 according to yet another implementation aspect; and

FIG. 12 shows a specific flow chart of step S50 and step S60 according to yet another implementation aspect.

【Detailed ways】

Several preferred embodiments of the present invention are described in detail with reference to the accompanying drawings and the following descriptions. In different drawings, the same component symbols represent the same or similar components.

Please refer to FIG. 1 . FIG. 1 is a schematic block diagram of a touch input system according to a first preferred embodiment of the present invention. For clarity, the touch input system 100 of this embodiment is represented by dotted lines. The touch input system 100 includes a touch panel 120 , a conductive coil 140 , and an electromagnetic pen 160 . The touch panel 120 has a sensing area 122 and an edge area 124 . In this preferred embodiment, the touch panel 120 is a capacitive touch panel, and the sensing area 122 is plated with a transparent metal electrode pattern (not shown), and its material is preferably indium tin oxide (ITO), Indium zinc oxide (IZO), or carbon nanotubes (Carbon Nanotube).

As shown in FIG. 1 , the conductive coil 140 is disposed on the touch panel 120, the conductive coil 140 has a multi-turn circuit wound by a conductor wire 142, and the multi-turn circuit is located at the edge area 124 And surround the sensing area 122 . Preferably, the conductor wire 142 is made of transparent conductive material. In this embodiment, the transparent conductive material includes indium tin oxide (ITO), indium zinc oxide (IZO), or carbon nanotube (Carbon Nanotube). It is worth mentioning that the conductive lines 142 can be formed together with the metal electrode patterns in the above-mentioned manufacturing process of the capacitive touch panel, and no additional manufacturing process is required to reduce costs. Accordingly, the conductor lines 142 are made of the same material as the metal electrode pattern, and are located on the same substrate. Considering the internal resistance of the conductive coil 140, the conductive wire 142 of the present invention can also be made of a material different from the metal electrode pattern. For example, the conductor wire 142 is made of copper, silver, gold, aluminum and other metals.

The specific structure of the conductive coil 140 will be described in detail below, please refer to FIG. 2A to FIG. 2C , and FIG. 2A to FIG. 2C respectively illustrate a schematic diagram of the conductive coil 140 according to an embodiment of the present invention. The multi-turn circuit of the conductive coil 140 is preferably between 3 turns and 10 turns. In these embodiments, the conductor wire 142 is wound around 4 turns, but the present invention does not limit the number of turns of the conductor wire 142 .

As shown in FIG. 2A , in the first embodiment, the distances between the multiple turns of the conductor wire 142 are equal, that is, distance d1 = distance d2 = distance d3 . As shown in FIG. 2B , in the second embodiment, the distance between the multi-turn circuits of the conductor wire 142 gradually increases along the direction away from the sensing region 122 (as shown in FIG. 1 ), That is, distance d1<distance d2<distance d3. As shown in FIG. 2C , in the third embodiment, the distance between the multi-turn circuits of the conductor wire 142 gradually decreases along the direction away from the sensing region 122 (as shown in FIG. 1 ), That is, distance d1>distance d2>distance d3. The distance between the above-mentioned multi-turn circuits can be properly arranged according to the size and shape of the sensing area 122 , so that the electromagnetic energy generated by the conductor wire 142 can be evenly distributed in the sensing area 122 .

In other embodiments, the conductive coil 140 can also be disposed under the sensing area 122 of the touch panel 120, that is, the conductive wire 142 can be plated on the other side of the substrate where the metal electrode pattern is located, or A glass substrate (not shown in the figure) is additionally provided, the glass substrate is disposed under the substrate, and the conductor lines 142 are plated on the glass substrate.

Please refer to FIG. 1 again, the electromagnetic pen 160 includes a nib 162, the nib 162 is used to contact the sensing area 122 for position sensing, and the nib 162 is a conductor, the conductor is preferably metal, Conductive plastic, or conductive rubber and other materials. The tip 162 of the electromagnetic pen 160 can be used to contact the above-mentioned capacitive touch panel to achieve high precision of touch. Furthermore, the conductive tip 162 of the electromagnetic pen 160 forms a coupling capacitance with the transparent conductive material on the sensing area 122, so that the current around the sensing area 122 changes, and then the external position signal generating unit 210 calculates The horizontal coordinates and vertical coordinates (X, Y) of the contact point are obtained, and then sent to an external host (host) 200 (such as a computer). On the other hand, the electromagnetic stylus 160 can transmit an electromagnetic signal (not shown) to the conductive coil 140 to sense the touch pressure.

Specifically, the electromagnetic pen 160 can be an electromagnetic pen with a battery (or called an active electromagnetic pen) or a battery-less electromagnetic pen (or called a passive electromagnetic pen). In this embodiment, a battery-free electromagnetic pen is used for illustration. As shown in Figure 1, this embodiment provides a microcontroller 180 electrically connected to the conductive coil 140, the microcontroller controls the conductive coil 140 to transmit an electromagnetic energy (not shown) to the electromagnetic pen 160. After the coil (not shown) in the electromagnetic pen 160 receives the electromagnetic energy, it can send out the corresponding electromagnetic signal. Next, the microcontroller 180 switches the conductive coil 180 to receive the electromagnetic signal emitted by the electromagnetic pen 160 . The microcontroller 180 calculates the pressure of the electromagnetic pen 160 on the touch panel 120 according to the electromagnetic signal, and then generates a pressure-sensitive signal P to the host 200 . Wherein the pressure-sensing signal P represents the pressure gradient value of the pen tip. In addition, the electromagnetic pen 160 can be provided with additional buttons or switches (not shown) for the user to switch, and the electromagnetic pen 160 can send corresponding electromagnetic signals according to the different states of the switches. , and then the microcontroller 180 can calculate a corresponding switch signal S, wherein the switch signal S represents the switch state value on the electromagnetic pen 160 . The switch signal S can add additional functions to the touch input, such as a wiper and the like.

It is worth mentioning that the data interface between the position signal generating unit 210, the microcontroller 180 and the host 200 can be USB, I ² C, UART, SPI, Bluetooth, RF, etc., but the present invention does not limited to this.

Please refer to FIG. 3. FIG. 3 shows a schematic block diagram of another implementation aspect of the first preferred embodiment of the present invention. The difference from the above is that the horizontal coordinate and vertical coordinate ( X, Y) is sent to the microcontroller 180, and then the horizontal and vertical coordinates (X, Y) and the calculated pressure-sensitive signal P and switch signal S are sent to the microcontroller 180. Describe the host 200. Similarly, the data interface between the microcontroller 180 and the host 200 can be USB, I ² C, UART, SPI, Bluetooth, RF, etc., but the present invention is not limited thereto.

Please refer to FIG. 4. FIG. 4 shows a schematic block diagram of yet another implementation aspect of the first preferred embodiment of the present invention. The difference from the above is that the pressure-sensitive signal P calculated by the microcontroller 180 and the switch The signal S is transmitted to the position signal generation unit 210, and then the horizontal coordinate and vertical coordinate (X, Y) and the calculated pressure-sensitive signal P and switch signal S are transmitted to the position signal generation unit 210. Describe the host 200. Similarly, the data interface between the position signal generating unit 210 and the host 200 may be USB, I ² C, UART, SPI, Bluetooth, RF, etc., but the present invention is not limited thereto.

Please refer to FIG. 5. FIG. 5 shows a schematic block diagram of yet another implementation aspect of the first preferred embodiment of the present invention. The difference from the above is that the microcontroller 180 of this embodiment is electrically connected to the touch The panel 120, the microcontroller 180 has the function of calculating the horizontal coordinate and vertical coordinate (X, Y) of the contact point, and also has the function of calculating the pressure-sensitive signal P and the switch signal S at the same time, so that the horizontal coordinate The vertical coordinates (X, Y) and the calculated pressure-sensing signal P and switch signal S are transmitted from the microcontroller 180 to the host 200 . Similarly, the data interface between the microcontroller 180 and the host 200 can be USB, I ² C, UART, SPI, Bluetooth, RF, etc., but the present invention is not limited thereto.

Please refer to FIG. 6 , which is a schematic block diagram of a touch input system according to a second preferred embodiment of the present invention, wherein the touch input system of the second preferred embodiment is denoted by reference numeral 300 . The touch input system 300 includes a touch panel 120 , a conductive coil 140 , an electromagnetic pen 160 , and a microcontroller 180 . The difference between the touch input system 300 of the second preferred embodiment and the touch input system 100 of the second preferred embodiment is only that the touch input system 300 of the second preferred embodiment includes the above-mentioned microcontroller 180, the multiple components The description of has been described in detail above, and will not be repeated here.

Please refer to FIG. 7. FIG. 7 shows a schematic block diagram of another implementation aspect of the second preferred embodiment of the present invention. The difference from the above is that the position signal generating unit 210 and the microcontroller 180 are electronic Connected to a main processor 230, the main processor 230 may include an analog/digital conversion circuit, an amplifier circuit, a filter circuit, a frequency counting circuit, etc., and can perform horizontal and vertical coordinates (X, Y) and pressure-sensitive signals P and the switch signal S perform further calculations, such as the ghost point judgment of the horizontal and vertical coordinates (X, Y), the order classification of the pressure-sensitive signal P, and the generation of palm rejection (Palm Rejection) and other functions. , and send it to the host 200 after calculation. Similarly, the data interface between the main processor 230 and the host 200 may be USB, I ² C, UART, SPI, Bluetooth, RF, etc., but the present invention is not limited thereto.

The touch input method using the touch input system 100 of this embodiment will be introduced in detail below. Please refer to FIG. 1 and FIG. 8 together. FIG. 8 is a flow chart of a touch input method according to a preferred embodiment of the present invention. The touch input method of this embodiment is used to sense the position and pressure of an electromagnetic pen 160 on a touch screen. For the components mentioned below, please refer to the above description, and details will not be repeated here.

The touch input method starts at step S10 , in step S10 , a touch panel 120 having a sensing area 122 and an edge area 124 is provided, and then step S20 is executed. In this embodiment, the touch panel 120 is preferably a capacitive touch panel.

In step S20, a conductive coil 140 is disposed on the edge area 124 of the touch panel 120, and then step S30 is executed. The conductive coil 140 has a multi-turn circuit wound by a conductor wire 142 , and the multi-turn circuit surrounds the sensing area 122 . In this embodiment, the conductor line 142 is made of a transparent conductive material, wherein the transparent conductive material includes indium tin oxide (ITO) or indium zinc oxide (IZO). In addition, the multi-turn line is between 3 turns and 10 turns. As shown in FIG. 2A , the distances between the multi-turn circuits are equal. In other embodiments, as shown in FIG. 2B , the distance between the multi-turn circuits gradually increases along the direction away from the sensing region 122 . Alternatively, as shown in FIG. 2C , the distance between the multi-turn circuits gradually decreases along the direction away from the sensing area 122 .

In addition, in other implementations, the step S20 may be to dispose a conductive coil 140 under the touch panel 120 , the conductive coil 140 has a multi-turn circuit wound by a conductor wire 142 , and then perform the step S30 . That is to say, the conductor line 142 can be plated on the other side of the substrate where the metal electrode pattern is located, or an additional glass substrate (not shown) is provided, the glass substrate is arranged below the substrate, and the The conductor lines 142 are plated on the glass substrate.

In step S30, a conductor is provided to the tip 162 of the electromagnetic pen 160, and then step S40 is performed. The conductor is preferably made of metal, conductive plastic, or conductive rubber.

In step S40, the pen tip 162 touches the sensing area 122 of the touch panel 120, and then step S50 is executed.

In step S50 , the touch panel 120 detects a touch position on the sensing area 122 , that is, the above-mentioned horizontal coordinate and vertical coordinate (X, Y), and then executes step S60 .

In step S60, the electromagnetic pen 160 transmits an electromagnetic signal to the conductive coil 140 to generate a pressure-sensitive signal. It is worth noting that the touch input method of the present invention does not limit the execution sequence of the above steps. For example, after step S40 is executed, step S50 and step S60 can be executed at the same time, or step S60 can be executed first, and then step S50 can be executed.

The specific steps of detecting the touch position and generating the pressure-sensitive signal in step S50 and step S60 will be described in detail below. Please refer to FIG. 1 and FIG. 9 together. FIG. 9 shows the specific process of step S50 and step S60 in FIG. 8 picture.

As shown in FIG. 9, before step S40, that is, before the step where the pen tip 162 contacts the sensing area 122 of the touch panel 120, the touch input method further includes step S110, that is, the electromagnetic pen 160 approaches the The touch panel 120 is described above, and then step S120 is performed.

In step S120, it is judged whether the electromagnetic pen 160 touches the touch panel 120, if yes, then execute step S130 and step S135, if not, then the electromagnetic pen 160 transmits a fundamental frequency signal to the conductive coil 140 to generate A hovering signal. That is, step S122 to step S128 are executed. Specifically, the step of generating the suspension signal starts at step S122. In step S122, the electromagnetic pen 160 transmits a base frequency signal, and then executes step S124. In step S124, the conductive coil 140 receives the baseband signal, and then executes step S126. In step S126, a microprocessor 180 is provided to receive and process the baseband signal, and then step S128 is executed. In step S128 , the microprocessor 180 generates the suspension signal according to the base frequency signal, and then executes step S180 , that is, provides the suspension signal to the host 200 .

In step S135 , generate a location signal, and then execute step S180 , that is, provide the location signal to the host 200 . In detail, the conductive tip 162 of the electromagnetic pen 160 forms a coupling capacitance with the transparent conductive material on the sensing area 122, so that the current around the sensing area 122 changes, and then the external position signal generating unit 210 calculates The horizontal coordinates and vertical coordinates (X, Y) of the contact point, that is, the above-mentioned position signal, are transmitted to the external host 200 .

In step S130, the tip 162 of the electromagnetic pen 160 is forced to generate an axial displacement, and then step S140 is executed. In step S140, due to the displacement of the pen tip 162 of the electromagnetic pen 160, the electromagnetic signal emitted by the electromagnetic pen 160 has a frequency offset phenomenon, that is, a frequency offset signal is transmitted, and then step S150 is executed. Wherein the frequency offset signal is different from the base frequency signal. In step S150, the conductive coil 140 receives the frequency offset signal, and then executes step S160. In step S160, a microprocessor 180 is provided to receive and process the frequency offset signal, and then step S170 is executed. In step S170, the microcontroller 180 generates the pressure-sensitive gradient value according to the frequency change value of the electromagnetic signal, that is, the microprocessor 180 generates the pressure-sensitive signal P according to the frequency offset signal, and then performs the steps S180 , providing the pressure-sensing signal P to the host 200 .

The step of generating the microprocessor 180 to process the frequency offset signal includes: comparing the difference between the frequency offset signal and a fundamental frequency, and then performing analog-to-digital conversion on the difference to obtain a digital value. The size of the digital value represents the writing force of the electromagnetic pen, wherein the digital value is preferably between 0 to 1023, or 0 to 255, which means that the digital value can divide the writing force into 1024 steps Or it is 256 steps, so as to provide the host computer 200 to judge and generate corresponding line thickness on the touch panel 120 .

Please refer to FIG. 3 and FIG. 10 together. FIG. 10 shows a specific flow chart of step S50 and step S60 according to another implementation aspect. Different from the above embodiments, in step S135, a position signal is generated, and then step S160 is executed. That is to say, after the position signal generation unit 210 calculates the horizontal coordinates and vertical coordinates (X, Y) of the contact point, the microcontroller 180 receives the horizontal coordinates and vertical coordinates (X, Y), and then The microcontroller 180 provides the horizontal and vertical coordinates (X, Y) and the pressure-sensing signal P to the host 200 .

Please refer to FIG. 4 and FIG. 11 together. FIG. 11 shows a specific flowchart of step S50 and step S60 according to yet another implementation aspect. Different from the above-mentioned embodiments, in step S170, the microcontroller 180 generates the pressure sensitivity gradient value according to the frequency change value of the electromagnetic signal, that is, the microprocessor 180 generates the pressure-sensing signal P, and then execute step S137. In step S137, the position signal generation unit 210 receives the pressure-sensing signal P, and then executes step S180. That is to say, the position signal generating unit 210 provides the pressure-sensing signal P and the horizontal and vertical coordinates (X, Y) to the host 200 .

Please refer to FIG. 5 and FIG. 12 together. FIG. 12 shows a specific flowchart of step S50 and step S60 according to yet another implementation aspect. Different from the above-mentioned embodiment, after step S120 judges yes, then step S130 and step S139 are executed. In step S139, a microcontroller 180 is provided to generate a position signal, and then step S180 is executed. That is to say, the microcontroller 180 can be used to generate horizontal coordinates and vertical coordinates (X, Y), and can also generate the pressure-sensitive signal P, and then the microcontroller 180 can convert the horizontal coordinates and vertical coordinates (X, Y) and the pressure-sensing signal P are provided to the host 200 .

To sum up, the present invention uses the electromagnetic pen 160 with the conductive pen tip 162 to contact the capacitive touch panel, so as to achieve high precision of touch. In addition, the pressure-sensitive signal can be generated through the touch panel 120 wound with the conductive coil 140 and the electromagnetic pen 160 , so as to simply detect the pen force.

Although the present invention is disclosed above with a preferred embodiment, it is not intended to limit the present invention. Those skilled in the art to which the present invention belongs can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims (10)

1. a touch inputting method, for sensing the position of a time writer in a touch screen and pressure, it is characterized in that, described touch inputting method comprises the following steps:

The touch panel with an induction region and a fringe region is provided;

Arrange the described fringe region of a conductive coil on described touch panel, described conductive coil has the multiturn circuit be coiled into by a conductor lines, and described multiturn circuit is surrounded on described induction region;

There is provided a conductor to the nib of described time writer;

The described induction region of touch panel described in described Stylus contact;

Described touch panel detecting is at a touch location of described induction region; And

Described time writer transmits an electromagnetic signal to described conductive coil to produce a pressure sensitivity signal.

2. touch inputting method according to claim 1, is characterized in that, the concrete steps producing described pressure sensitivity signal comprise:

Described time writer launches a frequency offset signals;

Described conductive coil receives described frequency offset signals;

A microprocessor is provided to receive and process described frequency offset signals; And

Described microprocessor produces described pressure sensitivity signal according to described frequency offset signals.

3. touch inputting method according to claim 2, is characterized in that, described in described microprocessor processes, the step of frequency offset signals comprises:

The difference of more described frequency offset signals and a fundamental frequency; And

Simulate to digital conversion to described difference, to obtain a digital value.

4. touch inputting method according to claim 3, is characterized in that, the size of described digital value represents the power size of starting writing of described time writer.

5. touch inputting method according to claim 1, is characterized in that, before the step of the described induction region of touch panel described in described Stylus contact, described touch inputting method also comprises:

Described time writer transmits a fundamental frequency signal to described conductive coil to produce a suspension signal.

6. touch inputting method according to claim 5, is characterized in that, the concrete steps producing described suspension signal comprise:

Described time writer launches a fundamental frequency signal;

Described conductive coil receives described fundamental frequency signal;

A microprocessor is provided to receive and process described fundamental frequency signal; And

Described microprocessor produces described suspension signal according to described fundamental frequency signal.

7. the touch inputting method as described in claim the 1, is characterized in that, the spacing between described multiturn circuit is equal.

8. the touch inputting method as described in claim the 1, is characterized in that, the spacing between described multiturn circuit becomes large gradually along away from described induction region direction.

9. the touch inputting method as described in claim the 1, is characterized in that, the spacing between described multiturn circuit diminishes gradually along away from described induction region direction.

10. a touch inputting method, for sensing the position of a time writer in a touch screen and pressure, it is characterized in that, described touch inputting method comprises the following steps:

The touch panel that one has an induction region and a fringe region is provided;

Arrange a conductive coil below described touch panel, described conductive coil has the multiturn circuit be coiled into by a conductor lines;

There is provided a conductor to the nib of described time writer;

The described induction region of touch panel described in described Stylus contact;

Described touch panel detecting is at a touch location of described induction region; And

Described time writer transmits an electromagnetic signal to described conductive coil to produce a pressure sensitivity signal.