CN201087861Y - computer input device - Google Patents

Abstract

The utility model discloses a computer input device, which comprises a seat body, an optical movement track sensor, a microprocessor, a power switch unit and an electric field sensor; a human body electrostatic field is sensed through a conductive metal plate or a metal coil arranged around the optical moving track sensor, a trigger signal is output to a microprocessor according to the result of sensing the human body electrostatic field, the microprocessor outputs a power supply control signal corresponding to the trigger signal to a power supply switch unit, and the power supply switch unit switches on or off a power supply of the power supply and the optical moving track sensor according to the state of the power supply control signal so as to stop the detection activity of the optical moving track sensor, thereby avoiding the interference phenomenon of an external light source.

Description

computer input device

technical field

The utility model relates to a computer input device, in particular to a computer input device with an optical movement track sensing module.

Background technique

With the development and progress of science and technology, computer equipment such as personal computer (PC) or notebook computer (Notebook) has become an indispensable and convenient tool for the public in daily life or work. However, computer equipment must Only by connecting external computer peripheral devices such as printers, keyboards, mice, etc., can the functions of computer equipment be executed and the maximum effect can be exerted.

Taking the mouse as an example, the mouse has been widely used in window interface control of computer equipment at present, and has become one of the inseparable peripheral hardware devices. The currently seen mouse is roughly divided into two types: a wheel mouse and an optical mouse, and the cursor movement of the computer window is performed by rolling a ball or optical sensing. But this kind of method must work on an appropriate working plane, otherwise it will cause the dilemma that the user cannot operate the input device comfortably and accurately.

In order to overcome the above-mentioned problems, a so-called "optical trace detecting module" technology is thus produced. However, the problem with this type of device is that when the user's finger is not placed on the sensing module, the external light is likely to cause unnecessary interference to the sensing module, so there will be inaccurate control or shaking. Produced, so it is one of the problems to be solved.

Utility model content

The utility model provides a computer input device, which can stop the detection activity of the optical moving track sensor therein when the user's finger leaves the optical moving track sensing module, so as to avoid the interference phenomenon of the external light source.

In order to achieve the above object, the utility model provides a computer input device, which includes: a base; an optical movement track sensor, which is arranged on one side of the base, includes a light-transmitting element and an optical movement detection unit, the optical movement The detection unit is electrically coupled with a power supply, and has at least one light source, and outputs a sensing signal correspondingly after receiving the light source blocked by the finger and reflected or refracted; a microprocessor is arranged in the seat, respectively It is electrically coupled with the power supply and the optical movement track sensor to receive the sensing signal; a power switch unit is arranged in the base body and is electrically coupled with the power supply, the optical movement track sensor and the microprocessor respectively and an electric field sensor, which is electrically coupled with the power supply, senses a human body electrostatic field through a conductive metal plate or a metal coil arranged around the optical movement track sensor, and according to the result of sensing the human body electrostatic field , outputting a trigger signal to the microprocessor to control the detection activity of the optical movement track sensor.

Moreover, in order to achieve the above object, the utility model provides a computer input device, comprising: a body, which accommodates at least one optical movement trajectory sensing module, the optical movement trajectory sensing module includes at least one light source, a light-transmitting Components and an optical moving track sensor; one end of the optical moving track sensor is connected to a power switch, the other end is connected to a microprocessor, and one end of the power switch unit is connected to an electric field sensing unit, and the other end It is then connected to the power supply; and, the electric field sensing unit has an electric field sensor, and a conductive metal element or antenna.

According to the power control module of the computer input device disclosed in the utility model, it includes a base; an optical movement track sensor is arranged on one side of the base, and includes a light-transmitting element and an optical movement detection unit, and the optical movement detection unit and A power supply is electrically coupled, which can emit a light source, and output a sensing signal after receiving the light source blocked by the finger or refraction; coupled to receive the sensing signal; a power switch unit, arranged in the base body, electrically coupled with the power supply, the optical movement track sensor, and the microprocessor; and an electric field sensor, electrically coupled with the power supply, by setting A conductive metal plate or a metal coil around the optical movement track sensor senses a human body electrostatic field, and outputs a trigger signal to the microprocessor according to the result of sensing the human body electrostatic field, so that the microprocessor output corresponds to the trigger A power control signal of the signal is sent to the power switch unit, and the power switch unit turns on or off the power supply circuit of the power supply and the optical moving track sensor according to the state of the power control signal, so as to stop the detection activity of the optical moving track sensor, so as to avoid Interference phenomenon of external light source.

The power supply control module of the computer input device of the present invention is provided with a human body electrostatic field sensing element around the operating area of the computer input device, and when the user's finger is placed in the operating area of the computer input device, the optical movement track sensor is turned on immediately On the contrary, if the user leaves the operating area, the detection activity of the optical movement track sensor will be stopped, so as to avoid the interference phenomenon of the external light source.

Regarding the features and implementation of the present utility model, the preferred embodiment is described in detail below in conjunction with the drawings.

Description of drawings

Fig. 1 is the system block diagram of the utility model embodiment;

Figure 2A is a schematic diagram of the operation of the utility model embodiment; and

Fig. 2B is a schematic cross-sectional structure diagram of an embodiment of the present invention.

Among them, reference signs:

10: Optical movement track sensor

20: Microprocessor

30: Power switch unit

40: Electric field sensing unit

50: computer side

100: computer input device

110: seat body

120: metal coil

141: Translucent element

142: Optical movement detection unit

1421: light source

1422: Light sensor

180: First circuit board

181: Second circuit board

Detailed ways

According to the computer input device disclosed by the utility model, it includes but not limited to mouse, trackball, touch pad, game controller, etc. computer peripheral input devices, and can be built in a notebook computer, PDA, etc. with a window In the electronic device of the interface, to provide functions related to user operations. However, the accompanying drawings are provided for reference and illustration only, and are not intended to limit the present invention.

Please refer to FIG. 1 , which is a system block diagram of an embodiment of the present invention. As shown in FIG. 1 , the power control module of the computer input device of the present invention includes an optical movement trajectory sensing module, a microprocessor 20 , a power switch unit 30 and an electric field sensor 40 .

The optical movement track sensing module at least includes an optical movement track sensor 10, which is electrically coupled with a power supply and a microprocessor 20; the optical movement track sensing module also includes a light-transmitting element 141 and an optical movement The detection unit 142 (as shown in FIG. 2B ), and the optical movement detection unit 142 is electrically coupled with a power supply (for example, battery power, or the power supply provided by the computer terminal 50), which has a light source 1421 (for example, a laser light source or LED light source), and output an optical motion sensing signal to the microprocessor 20 after receiving the light source blocked by the finger and reflected or refracted. The use of the optical motion sensing signal includes, but is not limited to, controlling the movement of the computer cursor, or the up and down of the window page, or the left and right scrolling control, etc., for example.

The microprocessor 20 is electrically coupled with the power supply and the optical movement track sensor 10 respectively, and can also receive sensing signals from the optical movement track sensor 10 in addition to receiving various operating signals from the computer input device; meanwhile, the microprocessor 20 can be connected to the computer terminal 50 through a universal serial bus (USB) transmission interface, PS/2 transmission interface or RS-232 transmission interface, and communicate with the computer terminal 50 to transmit power, signal or data. The microprocessor 20 can be, for example, a central processing unit (Central Processing Unit, CPU), a microcontroller (Micro Control Unit, MCU) or a digital signal processor (Digital Signal Processor, DSP).

The power switch unit 30 is electrically coupled to the power supply, the optical movement track sensor 10, and the microprocessor 20 respectively, and can receive the power control signal output by the microprocessor 20, and turn on or off according to the voltage level of the power control signal On, for example, when the voltage level of the power control signal is a high voltage level, the power switch unit 30 is in an on state; when the voltage level of the power control signal is a low voltage level, the power switch unit 30 is Disconnected state. The power switch unit 30 may be, for example, a bipolar transistor (BJT) switch, a field effect transistor (FET) switch or a metal oxide semiconductor (MOS) switch or other types of electronic switches.

The electric field sensor 40 is electrically coupled with the power supply, uses a conductive metal plate or a metal coil as an inductive antenna, and can judge whether there is an electrostatic field of the human body according to the change of the electrostatic capacity, especially by being arranged around the optical movement track sensor 10. The conductive metal plate or metal coil senses the electrostatic field of the human body, and outputs a trigger signal to the microprocessor 20 according to the result of sensing the electrostatic field of the human body, so that the microprocessor 20 outputs a power control signal corresponding to the trigger signal to the power switch unit 30 , and the power switch unit 30 turns on or off the power supply circuit of the power supply and the optical movement track sensor 10 according to the state of the power control signal, so as to stop the detection activity of the optical movement track sensor, so as to avoid the interference phenomenon of the external light source.

Please refer to FIG. 2A , which is a schematic diagram of the operation of the embodiment of the present invention. As shown in FIG. 1 , FIG. 2A and FIG. 2B , when the user holds the base body 110 with his hand, and the user can use fingers to slide on the optical movement track sensor 10 , through the The metal coil 120 can sense the electrostatic field of the human body. At this time, the electric field sensor 40 outputs a trigger signal (for example, a high-level voltage signal) to the microprocessor 20, so that the microprocessor 20 outputs a power control signal corresponding to the trigger signal ( For example, a high-level voltage signal) to the power switch unit 30 , and the power switch unit 30 turns on the power supply and the power supply circuit of the optical movement track sensor 10 .

When the user's hand is not sensed by the metal coil 120, at this moment, the electric field sensor 40 outputs a trigger signal (for example, a low-level voltage signal) to the microprocessor 20, so that the microprocessor 20 outputs a signal corresponding to the trigger signal. The power supply control signal (for example, low-level voltage signal) to the power switch unit 30, and the power switch unit 30 disconnects the power supply circuit of the power supply and the optical moving track sensor 10 to start the detection activity of the optical moving track sensor 10 .

Please refer to FIG. 2B , which is a schematic cross-sectional structure diagram of an embodiment of the present invention. As shown in Figure 2B, the optical movement track sensor 10 is arranged on the first circuit board 180 in the base body 110, and a metal coil 120 for sensing the electrostatic field of the human body is arranged around the light-transmitting element 141, and the metal coil 120 can also be Replace it with a conductive metal sheet, wherein the material used for the light-transmitting element 141 can be acrylic or glass, etc.; it can also be a light-transmitting plate or a lens.

A second circuit board 181 is arranged below the optical movement track sensor 10, and a microprocessor 20 and a power switch 30 are arranged on the second circuit board 181, wherein the first circuit board 180 and the second circuit board 181 are electrically coupled. catch. In addition, those skilled in the art can easily understand that the optical movement track sensor 10 , the microprocessor 20 and the power switch 30 can be arranged on the same circuit board.

In addition, the optical movement detection unit 142 of the present invention is an optical sensing module, so it has at least one light source 1421 and a light sensor 1422 to calculate the physical movement amount of the user's finger sliding on the light-transmitting element 141, and Output to the computer terminal 50 to execute related functions. The light source 1421 of the optical motion detection unit 142 can be a light-emitting diode (LED) or similar light-emitting elements to emit light with directional characteristics. In addition, the light sensor 1422 can be at least one image detection sensor, such as a charge-coupled device (Charged Coupled Device, CCD) or a complementary metal oxide semiconductor (Complementary Metal-Oxide semiconductor, CMOS), to detect finger movement The generated image changes; similarly, it can also be a radiation detection sensor for detecting physical property changes after light refraction.

In summary, the power supply control module of the computer input device of the present invention is equipped with human body electrostatic field sensing elements around the operating area of the computer input device. When the user's finger is placed in the operating area of the computer input device, the The detection activity of the optical movement track sensor 10 is started; on the contrary, if the user leaves the operating area, the detection activity of the optical movement track sensor 10 will be stopped, so as to avoid the interference phenomenon of the external light source.

Of course, the utility model can also have other various embodiments, without departing from the spirit and essence of the utility model, those of ordinary skill in the art can make various corresponding changes and deformations according to the utility model , but these corresponding changes and deformations should all belong to the scope of protection of the appended claims of the present utility model.

Claims (10)

1. a computer input unit is characterized in that, includes:

One pedestal;

One optics motion track sensor, be arranged at this pedestal one side, include a translucent element and an optics moves detecting unit, this optics moves a detecting unit and a power supply electric property coupling, and has at least one light source, and in this light source that receives after being pointed blocking reflected or refraction, corresponding output one sensing signal;

One microprocessor is arranged in this pedestal, electrically couples with this power supply, this optics motion track sensor respectively, to receive this sensing signal;

One power switch unit is arranged in this pedestal, respectively with this power supply, this optics motion track sensor, this microprocessor electric property coupling; And

One electric-field sensor, with this power supply electric property coupling, by being arranged at this an optics motion track sensor conductive metal sheet or a wire coil sensing one static electricity on human body field on every side, and according to the result of this static electricity on human body field of sensing, export a trigger pip to this microprocessor, to control the detected activity of this optics motion track sensor.

2. computer input unit according to claim 1 is characterized in that this power supply is provided by the battery that is arranged in this pedestal.

3. computer input unit according to claim 1 is characterized in that this power supply is provided by a computer terminal.

4. computer input unit according to claim 1 is characterized in that, this conductive metal sheet or this wire coil more be arranged at this translucent element around.

5. computer input unit according to claim 1 is characterized in that, this microprocessor is connected to a computer terminal by a general-purpose serial bus transmission interface, PS/2 transmission interface or RS-232 transmission interface.

6. computer input unit according to claim 1 is characterized in that, this power switch unit includes bipolar transistor switch, field-effect transistor switch or metal-oxide semiconductor switch.

7. computer input unit according to claim 1 is characterized in that, this optics motion track sensor can be a kind of optical image change sensor at least, or a kind of light refraction change sensor.

8. a computer input unit is characterized in that, comprising:

One pedestal, it is equipped with an optics motion track sensing module at least, and this optics motion track sensing module includes at least one light source, a translucent element and an optics motion track sensor; One end and a power switch of this optics motion track sensor join, and the other end and a microprocessor join, and an end of this power switch unit and an electric field sensing unit join, and the other end then joins with power supply; Again, this electric field sensing unit has an electric-field sensor, and a conductive hardware or an antenna.

9. computer input unit according to claim 8 is characterized in that, this hardware or antenna be located at this translucent element around.

10. computer input unit according to claim 8 is characterized in that, this optics motion track sensor can be a kind of optical image change sensor at least, or a kind of light refraction change sensor.

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