CN102109942B - Method for realizing two-point touch on basis of resistance-type screen - Google Patents
Method for realizing two-point touch on basis of resistance-type screen Download PDFInfo
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Abstract
The invention provides a method for realizing two-point touch on the basis of a resistance-type screen. When the resistance-type screen is touched, pins X+, Y+, X-, and Y- of a touch screen control chip UOR6150 receive voltage signals generated by the resistance-type screen, a PENIRQ pin of the touch screen control chip is changed from high level to low level and sends a signal to a CPU at the moment, the voltage signals are subjected to analog-to-digital conversion through an analog-to-digital converter inside the chip, and coordinate signal values of corresponding two-point contacts and pressures values corresponding to the coordinate signal values are acquired and stored in a register inside the chip; and the CPU acquires the gesture action according to the coordinate signal values of the corresponding contacts and the pressures values corresponding to the coordinate signal values, and processes. The method can be used for acquiring the gesture action through two-point touch without expensive capacitance-type touch screen, and further realizing the same effect as the gesture action acquired through multi-point touch, thereby reducing the production cost.
Description
[technical field]
The present invention relates to the touch screen technology field, relate in particular to a kind of method that realizes 2 touches based on the resistance-type screen.
[background technology]
In numerous touch screen technologies, the resistive touch screen cost is minimum, and technology maturity is the highest.Therefore, it is the highest to have become market to account for rate, the most general touch technology.But this technology can't be supported multiple point touching, and existing similar scheme is to realize multiple point touching with capacitive touch screen.
Capacitive touch screen is realized realizing multiple point touching, but the low yield of touch-screen, problems such as system assembles difficulty let the capacitive touch screen cost high always.Traditional four line single-point touches screen is whenever by a screen, and resistive touch screen can produce a voltage signal according to the position that staff is pressed.Be delivered to this voltage signal the touch screen interface of CPU then, produce a coordinate signal and give CPU.CPU can produce similar mouse-click, double-click and drag kick according to the variation of interval time, coordinate position and the pressure of per twice or multiple signal; It can only realize the single-point touches screen.
Prior art provides a kind of method and system of utilizing a plurality of resistive touch screens to realize the multiple spot input, sees disclosed Chinese invention patent application the 101609385th publication number on Dec 23rd, 2009.This invention is achieved in that
Said method is applied to be provided with the mobile phone of at least two resistive touch screens, comprising: each piece resistive touch screen on the mobile phone is detected; When detecting arbitrary touch-screen and be touched, obtain the contact coordinate information on this touch-screen that is touched.Said system comprises: a plurality of resistive touch screens, control module, drive circuit unit; The access drive circuit unit that a plurality of resistive touch screens is parallel with one another; Drive circuit unit links to each other with control module, and the voltage signal that is used for producing when resistive touch screen is touched is converted into the coordinate information of contact and sends to control module; Control module is used to receive the coordinate information of contact.After adopting the present invention, compared with prior art, the resistive touch screen that use cost is cheap has promptly been realized the input of multiple point touching with the combination action, and it is more easy that the user is operated, and improved ease of use.
Back prior art also provides the disposal route and the system of a kind of touch-screen and touch information thereof; Like disclosed Chinese invention patent application 101893953A publication number on November 24th, 2010; This invention is achieved in that this invention is applicable to communication technical field, and said touch-screen comprises at least two touch layers, and said touch layer is communicated by letter with central processing unit separately respectively and is connected; Laterally arrange between the said touch layer, said touch layer is used to report the dynamics parameter information and realizes multiple point touching.In this inventive embodiments; Touch-screen comprises at least two touch layers, and said touch layer is communicated by letter with central processing unit separately respectively and is connected, and laterally arranges between the said touch layer; Said touch layer is used to report the dynamics parameter information and realizes multiple point touching; Solved resistive touch screen and can not respond the touch of two and above point simultaneously, also do not had the defective of the numerical value of feedback touching intensity, be user-friendly to.Two above-mentioned patents all are through the improvement to touch-screen, thereby realize the technology of multiple point touching, but its production cost is than higher.
[summary of the invention]
The technical matters that the present invention will solve is to provide a kind of and realizes the method for 2 touches based on the resistance-type screen, the gesture motion that obtains through 2 touches, thus realize the same effect of gesture motion that multiple point touching obtains.
The present invention is achieved in that a kind of method based on 2 touches of resistance-type screen realization, and when resistive touch screen was touched, the X+ of touch-screen control chip, Y+, X-, Y-pin received the voltage signal that said resistive touch screen produces; Described touch-screen control chip is touch-screen control chip UOR6150; The PENIRQ pin of said touch-screen control chip became low level by high level and sent signal to CPU this moment; And the digital to analog converter through chip internal carries out the coordinate signal value force value corresponding with coordinate signal that analog-to-digital conversion process obtains corresponding 2 contacts with described voltage signal, and the coordinate signal value of its corresponding 2 contacts and the force value of coordinate signal correspondence are left in the internal register of touch-screen control chip; When finger when on touch-screen, doing the gesture orbiting motion, the PENIRQ pin be a low level just always, and chip constantly obtains the coordinate signal value of new contact and the force value of coordinate signal correspondence, and deposit data in the internal register of touch-screen control chip; Give CPU one time interval parameter this moment; After said CPU receives signal; Then CPU carries out read-write operation through the I2C bus to the data in the internal register of said touch-screen control chip according to the said time interval; And obtain its gesture motion, and deal with according to the coordinate signal value of its corresponding contact and the corresponding force value of coordinate signal.
The present invention has following advantage: the present invention receives the voltage signal that said resistive touch screen produces through X+, Y+, X-, the Y-pin of touch-screen control chip; And the running of the pin through said touch-screen control chip; Described voltage signal is carried out the coordinate signal value force value corresponding with coordinate signal that analog-to-digital conversion process obtains corresponding 2 contacts, and CPU is according to the action of dealing with of the force value of the coordinate signal value of its corresponding 2 contacts and coordinate signal correspondence.The present invention is not using under the expensive capacitive touch screen situation, the gesture motion that obtains through 2 touches, thus realize the same effect of gesture motion that multiple point touching obtains, thus production cost reduced.
[description of drawings]
Fig. 1 is a principle of operation synoptic diagram of the present invention.
Fig. 2 is a touch-screen control chip UOR6150 synoptic diagram of the present invention.
Fig. 3 is the inner theory diagram of touch-screen control chip UOR6150 of the present invention.
[embodiment]
Shown in seeing figures.1.and.2, a kind of method based on 2 touches of resistance-type screen realization, when resistive touch screen was touched, the X+ of touch-screen control chip (6), Y+ (7), X-(8), Y-(9) pin received the voltage signal that said resistive touch screen produces; This moment, PENIRQ (14) pin of said touch-screen control chip was sent out look-at-me one time to CPU; After said CPU receives look-at-me; The digital to analog converter that CPU controls said touch-screen control chip carries out coordinate signal value and the corresponding force value of coordinate signal that analog-to-digital conversion process obtains corresponding 2 contacts with described voltage signal; The coordinate signal value and the corresponding force value of coordinate signal of its corresponding 2 contacts are left in the internal register of touch-screen control chip; When finger when on touch-screen, doing the gesture orbiting motion, the PENIRQ pin be a low level just always, and chip constantly obtains the coordinate signal value of new contact and the force value of coordinate signal correspondence, and deposit data in the internal register of touch-screen control chip; Give CPU one time interval parameter this moment; After said CPU receives signal; Then CPU carries out read-write operation through the I2C bus to the data in the internal register of said touch-screen control chip according to the said time interval, and CPU obtains its gesture motion according to the data of reading, and deals with; Described gesture motion comprises: amplify, dwindle, anticlockwise, right rotation, on move, move down, move to left, move to right etc.The present invention does the action of gesture track through obtaining 2 touches on touch-screen, thereby realizes the same effect of gesture motion that multiple point touching obtains.
Below in conjunction with specific embodiment the present invention is described further.
As shown in Figure 2; X+ (6), Y+ (7), X-(8), Y-(9) pin of said touch-screen control chip UOR6150 is corresponding continuous with four pins (not shown) of resistive touch screen, and the VREF of said touch-screen control chip (13) pin connects outside reference voltage.Wherein as shown in Figure 2, the R45 of touch-screen control chip UOR6150, R46, R47, R48 are used for configuring chip I2C address.D7, D8, D9, D10 are used for ESD (static release) protection.It is more accurate that R40, R41, R42, R43, C21, C22, C23, C24 make that touch-screen flows to the signal of chip.
When hand of operating personnel touched resistive touch screen, with 2 touch, then the X+ of touch-screen control chip UOR6150, Y+, X-, Y-pin received the voltage signal that resistive touch screen produces at this moment; PENIRQ (14) pin of said touch-screen control chip became low level by high level and sent signal to CPU this moment; The digital to analog converter of said touch-screen control chip (as shown in Figure 3) carries out coordinate signal value and the corresponding force value of coordinate signal that analog-to-digital conversion process obtains corresponding contact with described voltage signal, and the force value that 2 the coordinate signal value of this moment and coordinate signal are corresponding is respectively A1 (300,300; 300); A2 (400,400,300); With its A1 (300,300,300), A2 (400,400,300) deposit data is in the internal register (as shown in Figure 3) of touch-screen control chip, after CPU receives signal.Said CPU carries out read-write operation through the I2C bus to data in the described register.Because finger is on touch-screen, to do the action of gesture track with 2 touch; As long as finger is by on touch-screen; PENIRQ (14) pin is a low level just always; Chip just ceaselessly obtains the coordinate signal value of new contact and the force value of coordinate signal correspondence, and deposit data in the internal register of touch-screen control chip.Give this moment CPU one time interval parameter as 10 milliseconds, then CPU reads the data in the register with 10 milliseconds, and analyzes.After 10 milliseconds, it is A1 (270,265,240) that CPU reads new value, A2 (430,420,190).CPU fixes tentatively and has done an amplification gesture.So constantly read the gesture track of new point and judge that last numerical value is A1 (110,120,230), A2 (650,680,210), can judge that the people has done the gesture of an amplification this moment, the operating system of electronic equipment is just made the action of amplification and is handled.
What be worth explanation is: in the inner theory diagram of the touch-screen control chip UOR6150 of Fig. 3, register is to be used for the storage voltage signal to carry out analog-to-digital conversion process and obtain the coordinate signal value of corresponding contact and the data of the force value of coordinate signal correspondence; State controller is used for controlling in real time the state of touch-screen control chip; Switch arrays (switch array) are used to receive the voltage signal address; The effect of REF is that the voltage of touch-screen and reference voltage are compared, and obtains a value and sends in the analog to digital converter; 4X1 MUX 4 selects a passage; Serial I/O is a serial communication interface; InOSC is the crystal oscillator input end, receives the external clock signal.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (2)
1. realize the method for 2 touches based on the resistance-type screen for one kind, it is characterized in that: when resistive touch screen was touched, the X+ of touch-screen control chip, Y+, X-, Y-pin received the voltage signal that said resistive touch screen produces; Described touch-screen control chip is touch-screen control chip UOR6150; The PENIRQ pin of said touch-screen control chip became low level by high level and sent signal to CPU this moment; And the digital to analog converter through chip internal carries out the coordinate signal value force value corresponding with coordinate signal that analog-to-digital conversion process obtains corresponding 2 contacts with described voltage signal, and the coordinate signal value of its corresponding 2 contacts and the force value of coordinate signal correspondence are left in the internal register of touch-screen control chip; When finger when on touch-screen, doing the gesture orbiting motion, the PENIRQ pin be a low level just always, and chip constantly obtains the coordinate signal value of new contact and the force value of coordinate signal correspondence, and deposit data in the internal register of touch-screen control chip; Give CPU one time interval parameter this moment; After said CPU receives signal; Then CPU carries out read-write operation through the I2C bus to the data in the internal register of said touch-screen control chip according to the said time interval; And obtain its gesture motion, and deal with according to the coordinate signal value of its corresponding contact and the corresponding force value of coordinate signal.
2. a kind of method that realizes 2 touches based on the resistance-type screen according to claim 1; It is characterized in that: corresponding the linking to each other of four pins of the X+ of said touch-screen control chip, Y+, X-, Y-pin and resistive touch screen, the VREF pin of said touch-screen control chip connects outside reference voltage.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102306064A (en) * | 2011-10-08 | 2012-01-04 | 上海酷宇通讯技术有限公司 | Touch screen control device and control method thereof |
| CN103092454B (en) * | 2011-10-31 | 2016-01-13 | 无锡华润矽科微电子有限公司 | Electric resistance type touch screen control circuit and multipoint touch realization method thereof |
| CN103294326A (en) * | 2012-03-02 | 2013-09-11 | 安凯(广州)微电子技术有限公司 | Resistance-type touch screen circuit and two-contact touch application method based on resistance-type touch screen |
| CN103973975B (en) * | 2014-04-10 | 2017-11-07 | 北京智谷睿拓技术服务有限公司 | Exchange method, device and user equipment |
| CN109145541A (en) * | 2018-08-27 | 2019-01-04 | 惠州Tcl移动通信有限公司 | A kind of dynamic unlocking method, storage equipment and intelligent terminal |
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| CN1582453A (en) * | 2001-11-08 | 2005-02-16 | 皇家飞利浦电子股份有限公司 | Multi-point touch pad |
| CN200986700Y (en) * | 2006-10-26 | 2007-12-05 | 比亚迪股份有限公司 | Four wire system resistor type touch screen testing circuit |
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| CN101576795A (en) * | 2008-05-06 | 2009-11-11 | 比亚迪股份有限公司 | Touch screen body and resistance type touch screen using same |
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| CN201440250U (en) * | 2009-05-26 | 2010-04-21 | Tcl集团股份有限公司 | Touch screen |
| CN102047200A (en) * | 2008-04-01 | 2011-05-04 | 吴谊镇 | Data input device and data input method |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1582453A (en) * | 2001-11-08 | 2005-02-16 | 皇家飞利浦电子股份有限公司 | Multi-point touch pad |
| CN200986700Y (en) * | 2006-10-26 | 2007-12-05 | 比亚迪股份有限公司 | Four wire system resistor type touch screen testing circuit |
| CN101493744A (en) * | 2008-01-25 | 2009-07-29 | 三菱电机株式会社 | Touch panel device and user interface device |
| CN102047200A (en) * | 2008-04-01 | 2011-05-04 | 吴谊镇 | Data input device and data input method |
| CN101576795A (en) * | 2008-05-06 | 2009-11-11 | 比亚迪股份有限公司 | Touch screen body and resistance type touch screen using same |
| CN101667089A (en) * | 2008-09-04 | 2010-03-10 | 比亚迪股份有限公司 | Method and device for identifying touch gestures |
| CN201440250U (en) * | 2009-05-26 | 2010-04-21 | Tcl集团股份有限公司 | Touch screen |
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