CN103076920A - Touch panel equipment and mobile terminal - Google Patents
Touch panel equipment and mobile terminal Download PDFInfo
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- CN103076920A CN103076920A CN2013100027122A CN201310002712A CN103076920A CN 103076920 A CN103076920 A CN 103076920A CN 2013100027122 A CN2013100027122 A CN 2013100027122A CN 201310002712 A CN201310002712 A CN 201310002712A CN 103076920 A CN103076920 A CN 103076920A
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Abstract
The invention is suitable for the technical field of touch panels and provides touch panel equipment and a mobile terminal. The touch panel equipment comprises a mainboard, a central processing unit and a touch panel module, wherein the mainboard comprises a pull-down resistor R2; one end of the pull-down resistor R2 is connected with a grounding layer of the mainboard, and the other end of the pull-down resistor R2 is respectively connected with independent pins of the touch panel module and an ADC (Analog Digital Converter) detection port of the central processing unit; the touch panel module comprises a pull-up resistor R1, wherein one end of the pull-up resistor R1 is connected with a module power supply of the touch panel module and the other end of the pull-up resistor R1 is connected with the independent pins; the central processing unit comprises a voltage detection unit, a module judging unit and a drive loading unit; the voltage detection unit is used for detecting a voltage value of the ADC detection port; the module judging unit is used for matching the voltage value with a preset voltage threshold to obtain the type of the touch panel module; and the drive loading unit is used for loading a driving program matched with the type. According to the touch panel equipment and the mobile terminal, the compatibility of a plurality of TP (Touch Panel) modules can be achieved just by selecting different resistance values for different TP modules.
Description
Technical field
The invention belongs to the touch screen technology field, relate in particular to a kind of touch panel device and portable terminal.
Background technology
Recent years, along with the intelligent degree of electronic product is more and more higher, touch-screen (Touch Panel, TP) is comfortable with it, the operating experience of hommization, is subject to liking of public users, has become the standard configuration of intelligent mobile terminal, panel computer.
But, original path (Original Equipment Manufacture, OEM) consider for factors such as the supply of material, agreed-upon prices, a machinery requirement touch-screen module of compatible several producers simultaneously often, microprocessing unit must be identified the touch-screen module of different manufacturers like this, and loading is urged to different touch-screen modules accordingly so that its normal operation.
At present, the TP module that the touch panel device in a machine can compatible two to three, but need to use 2 universal input/outputs (General Purpose Input Output, GPIO) mouth, perhaps need to make the I of every TP module
2The C address is different, will cause like this waste of GPIO mouth.Yet the peripherals of intelligent mobile terminal is many, and the GPIO mouth is originally just not enough.In addition, for several TP modules are all used same touch-control IC, its I
2The C address is different also to be unrealistic.So compatible many TP modules of existing touch panel device be have much circumscribed.
Summary of the invention
The embodiment of the invention provides a kind of touch panel device and portable terminal, the limitation problem that occurs when being intended to solve compatible many touch-screen modules of touch panel device that prior art provides.
On the one hand, provide a kind of touch panel device, described touch panel device comprises mainboard, central processor CPU and touch-screen module, and a drop-down resistance R 2 is installed on the described mainboard;
The end of described pull down resistor R2 is connected with the ground plane GND of described mainboard, the individual pin of the other end and described touch-screen module be connected the A-D converter ADC detection port of central processing unit and be connected respectively;
Comprise a pull-up resistor R1 in the described touch-screen module, the end of described pull-up resistor R1 is connected with the module power supply of described touch-screen module, and the other end is connected with described individual pin;
Described central processing unit comprises:
Voltage detection unit is for detection of the magnitude of voltage of described ADC detection port;
The module judging unit is used for described magnitude of voltage and the voltage threshold of presetting are mated, and obtains the type of described touch-screen module;
The drive load unit is for the driver of loading with described type matching.
Further, the resistance value of described pull down resistor R2 immobilizes.
Further, the resistance value of the pull-up resistor R1 in every kind of touch-screen module is different.
Further, after pull down resistor R2 dividing potential drop, export the magnitude of voltage of described ADC detection port in the sensing range of described ADC detection port.
On the other hand, provide a kind of portable terminal, described portable terminal comprises aforesaid touch panel device.
In the embodiment of the invention, the motherboard design of touch panel device is fixed, only need different touch-screen modules are chosen the compatibility that different resistance values can realize multiple touch-screen module, hardware design is simple, and the limitation problem that occurs can solve the compatible multiple touch-screen module of existing touch panel device the time.
Description of drawings
Fig. 1 is the structured flowchart of the touch panel device that provides of the embodiment of the invention one.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
In embodiments of the present invention, when carrying out the design of touch panel device, motherboard design is fixed, and only needs dissimilar touch-screen module is chosen the compatibility that different resistance values can realize multiple touch-screen module, and hardware design is simple.
Below in conjunction with specific embodiment realization of the present invention is described in detail:
Embodiment one
Fig. 1 shows the concrete structure block diagram of the touch panel device that the embodiment of the invention one provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.This touch panel device can be the unit of software unit, hardware cell or software and hardware combining in portable terminal or the panel computer.In the present embodiment, this touch panel device 1 comprises: mainboard 11, central processing unit (Central Processing Unit, CPU) 12 and touch-screen module 13.
Wherein, mainboard 11 comprises a drop-down resistance R 2, the end of this pull down resistor R2 is connected with the ground plane GND of mainboard 11, the A-D converter of the individual pin of the other end and touch-screen module 13 (pin pin) and central processing unit 12 (Analog to Digital Converter, ADC) detection port connects respectively, and the resistance value of pull down resistor R2 immobilizes.
Comprise a pull-up resistor R1 in the touch-screen module 13, the end of this pull-up resistor R1 is connected with the module power supply VCC of touch-screen module 13, and the other end is connected with the pin pin of touch-screen module 13, and the resistance value of the pull-up resistor R1 in every kind of touch-screen module is different.In addition, the other end of pull-up resistor R1 can be with other signal wire outlets of touch-screen module 13, and also separately outlet is connected to the pin pin.
The selection principle of the resistance value of pull down resistor R2 and pull-up resistor R1 is: guarantee to export the magnitude of voltage of ADC detection port to after pull down resistor R2 dividing potential drop in the sensing range of this ADC detection port.Be 0 to 2.5V such as, the reference voltage detection of this this ADC detection port, the magnitude of voltage that then exports the ADC detection port after pull down resistor R2 dividing potential drop to can not surpass 2.5V.
When touch panel device is worked, detect the magnitude of voltage of ADC detection port by central processing unit 12, this magnitude of voltage and the voltage threshold of presetting are mated, obtain the type of touch-screen module, loading works to drive corresponding touch-screen module with the driver of described type matching.
Concrete, central processing unit 12 comprises:
Voltage detection unit is for detection of the magnitude of voltage of ADC detection port;
The module judging unit is used for described magnitude of voltage and the voltage threshold of presetting are mated, and obtains the type of described touch-screen module;
The drive load unit is for the driver of loading with described type matching.
The present embodiment, only need to increase the fixing pull down resistor R2 of a resistance value on the mainboard of touch panel device, need not to improve for different touch-screen modules, only need in every kind of touch-screen module, to increase different pull-up resistor R1, during follow-up touch panel device work, can be come the dissimilar touch-screen module of different manufacturers production is identified according to the magnitude of voltage of ADC detection port by CPU, and load corresponding driver so that corresponding touch-screen module normal operation.Whole conceptual design is simple, and can realize the compatibility of multiple touch-screen module, the limitation problem that occurs in the time of the compatible multiple touch-screen module of touch panel device of prior art also can not occurring.
It should be noted that among the said system embodiment, included unit is just divided according to function logic, but is not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional unit also just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. touch panel device, described touch panel device comprises mainboard, central processor CPU and touch-screen module, it is characterized in that, described mainboard comprises a drop-down resistance R 2;
The end of described pull down resistor R2 is connected with the ground plane GND of described mainboard, the individual pin of the other end and described touch-screen module be connected the A-D converter ADC detection port of central processing unit and be connected respectively;
Comprise a pull-up resistor R1 in the described touch-screen module, the end of described pull-up resistor R1 is connected with the module power supply of described touch-screen module, and the other end is connected with described individual pin;
Described central processing unit comprises:
Voltage detection unit is for detection of the magnitude of voltage of described ADC detection port;
The module judging unit is used for described magnitude of voltage and the voltage threshold of presetting are mated, and obtains the type of described touch-screen module;
The drive load unit is for the driver of loading with described type matching.
2. touch panel device as claimed in claim 1 is characterized in that, the resistance value of described pull down resistor R2 immobilizes.
3. touch panel device as claimed in claim 1 is characterized in that, the resistance value of the pull-up resistor R1 in every kind of touch-screen module is different.
4. touch panel device as claimed in claim 2 or claim 3 is characterized in that, exports the magnitude of voltage of described ADC detection port to after pull down resistor R2 dividing potential drop in the sensing range of described ADC detection port.
5. a portable terminal is characterized in that, described portable terminal comprises such as each described touch panel device of claim 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100027122A CN103076920A (en) | 2013-01-05 | 2013-01-05 | Touch panel equipment and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100027122A CN103076920A (en) | 2013-01-05 | 2013-01-05 | Touch panel equipment and mobile terminal |
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| CN2013100027122A Pending CN103076920A (en) | 2013-01-05 | 2013-01-05 | Touch panel equipment and mobile terminal |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103268240A (en) * | 2013-05-21 | 2013-08-28 | 上海华勤通讯技术有限公司 | Identification circuit of PCBA board and identification method of PCBA board |
| CN103338284A (en) * | 2013-06-20 | 2013-10-02 | 上海天奕达电子科技有限公司 | System compatible with display screen equipment |
| CN105612696A (en) * | 2013-10-10 | 2016-05-25 | 日立汽车系统株式会社 | Electronic control device |
| CN105744083A (en) * | 2016-04-29 | 2016-07-06 | 努比亚技术有限公司 | Mobile terminal fingerprint self-adaption method and device |
| CN106598895A (en) * | 2016-11-29 | 2017-04-26 | 广州视源电子科技股份有限公司 | Small function board recognition system and method |
| CN106843569A (en) * | 2016-12-30 | 2017-06-13 | 歌尔科技有限公司 | A kind of touch control system and a kind of virtual reality device |
| CN110824924A (en) * | 2019-11-26 | 2020-02-21 | 珠海格力电器股份有限公司 | Touch controller, adaptive control method of touch controller and electric appliance |
| CN114003147A (en) * | 2021-11-02 | 2022-02-01 | 深圳市汇顶科技股份有限公司 | Signal detection device, touch pad and electronic equipment |
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| CN103268240A (en) * | 2013-05-21 | 2013-08-28 | 上海华勤通讯技术有限公司 | Identification circuit of PCBA board and identification method of PCBA board |
| CN103338284A (en) * | 2013-06-20 | 2013-10-02 | 上海天奕达电子科技有限公司 | System compatible with display screen equipment |
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| CN105744083A (en) * | 2016-04-29 | 2016-07-06 | 努比亚技术有限公司 | Mobile terminal fingerprint self-adaption method and device |
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| CN106843569A (en) * | 2016-12-30 | 2017-06-13 | 歌尔科技有限公司 | A kind of touch control system and a kind of virtual reality device |
| CN110824924A (en) * | 2019-11-26 | 2020-02-21 | 珠海格力电器股份有限公司 | Touch controller, adaptive control method of touch controller and electric appliance |
| CN110824924B (en) * | 2019-11-26 | 2021-07-16 | 珠海格力电器股份有限公司 | Touch controller, adaptive control method of touch controller and electric appliance |
| CN114003147A (en) * | 2021-11-02 | 2022-02-01 | 深圳市汇顶科技股份有限公司 | Signal detection device, touch pad and electronic equipment |
| CN114003147B (en) * | 2021-11-02 | 2022-08-09 | 深圳市汇顶科技股份有限公司 | Signal detection device, touch pad and electronic equipment |
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Application publication date: 20130501 |