CN102750038A - Scanning method of touch control chip - Google Patents
Scanning method of touch control chip Download PDFInfo
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- CN102750038A CN102750038A CN2012102207888A CN201210220788A CN102750038A CN 102750038 A CN102750038 A CN 102750038A CN 2012102207888 A CN2012102207888 A CN 2012102207888A CN 201210220788 A CN201210220788 A CN 201210220788A CN 102750038 A CN102750038 A CN 102750038A
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- induction electrode
- control chip
- touch
- electrode pin
- touch control
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Abstract
The invention provides a scanning method of a touch control chip. The touch control chip comprises a sensing electrode pin, an option switch and a register controlling the option switch; the register stores a configuration sequence from a microprocessor connected with the touch control chip, and controls the option switch to configure the sensing electrode pin according to the configuration sequence; and the touch control chip scans the sensing electrode. According to the scanning method, the configuration sequence is stored in the touch control chip and the touch control chip is directly utilized to scan the sensing electrode; therefore, the load of the microprocessor is reduced and the efficiency of the microprocessor is improved.
Description
Technical field
The present invention relates to a kind of scan method of chip, especially a kind of scanning collocation method of touch-control chip.
Background technology
Along with science and technology development, touch-screen has replaced the mechanical type push button panel gradually becomes the new operation interfaces of electronic equipment such as mobile phone, notebook.Touch-screen comprises resistive touch screen, infrared touch panel, capacitive touch screen, and they obtain coordinate through different modes, and obtains the mode of touch panel coordinates, exactly through touch-screen is scanned.Existing touch-screen scan mode is to scan through microprocessor control touch-control chip; Microprocessor needs constantly the touch-control chip to be sent the control sequence of induction electrode pin; The scanning to touch-screen is accomplished in control; This scan mode can take the resource of microprocessor, influences the travelling speed of microprocessor.
Summary of the invention
Technical matters to be solved by this invention provides a kind of scan method that can improve the touch-control chip of microprocessor work efficient.
To achieve these goals; The present invention provides a kind of scan method of touch-control chip; Said touch-control chip comprises the register of induction electrode pin, SS and control SS; Said register-stored from the configuration sequence of said touch-control chip microprocessor linked, and control said SS according to configuration sequence and dispose said induction electrode pin, said touch-control chip scans induction electrode.
Compared with prior art, the present invention is stored in configuration sequence in the touch-control chip, directly utilizes the touch-control chip that induction electrode is scanned, and has reduced the burden of microprocessor, has improved the efficient of microprocessor.
Description of drawings
Fig. 1 is the process flow diagram of the scan method of touch-control chip of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Said touch-control chip is connected to microprocessor through address and bus; Said touch-control chip comprises register and SS; The open and close of the said SS of said register controlled, said SS connect said induction electrode pin, the corresponding induction electrode that connects said touch screen of said induction electrode pin; The corresponding induction electrode pin of each SS, said induction electrode pin is according to said induction electrode series arrangement.Said register memory stores up the configuration sequence of said induction electrode pin, controls said SS according to said configuration sequence.
See also Fig. 1; When the touch-control chip scans touch-screen; Said register root disposes said induction electrode pin according to clock; Dispose one of them induction electrode pin that connects induction electrode for reference to the induction electrode pin, dispose another induction electrode pin that connects adjacent induction electrode and be scanning induction electrode pin.And said induction electrode is configured scanning according to signal cycle all the time, make that each said induction electrode pin can both be as the scan electrode pin.
Specifically introduce in the face of above-mentioned scan method down.At first, said microprocessor is sent to the touch-control chip with the configuration sequence of said induction electrode pin, and is stored in the register; Register is exported the first configuration set sequence SR000000; Wherein the S representative scans the induction electrode signal, and R represents with reference to the induction electrode signal, the non-inductive electrode signal of 0 representative; Register controlled connected the corresponding SS of the said first induction electrode pin and the second induction electrode pin and closed this moment; The SS that remaining induction electrode pin is corresponding is in open mode, disposes the first induction electrode pin this moment and is scanning induced electricity level pin, and it is the reference scan electrode pin that the second adjacent induction electrode pin is set; Promptly dispose first induction electrode and be the scanning induction electrode, disposing the second adjacent induction electrode is with reference to induction electrode.Send the second configuration set sequence 0SR00000 according to the said register of clock signal; Register controlled connected the corresponding SS of the said second induction electrode pin and the 3rd induction electrode pin and closed this moment; The SS that remaining induction electrode pin is corresponding is in open mode; Dispose the second induction electrode pin and be scanning induced electricity level pin; It is the reference scan electrode pin that the 3rd adjacent induction electrode pin is set, and promptly disposes second induction electrode and is the scanning induction electrode, and disposing the 3rd induction electrode is with reference to induction electrode.By that analogy; The 3rd configuration set sequence that register root is sent according to clock signal is 00SR0000; The 4th configuration set sequence is 000SR000, and the 5th configuration set sequence is 0000SR00, and the 6th configuration set sequence is 00000SR0; The 7th configuration set sequence is 000000SR; Said configuration sequence all moves to left according to clock signal at every turn or moves to right one, and corresponding said scan electrode also becomes adjacent next induction electrode by induction electrode corresponding in last one-period, also promptly goes up the reference electrode in one-period; Said reference electrode also becomes adjacent next induction electrode by induction electrode corresponding in last one-period, the constantly final scanning of accomplishing all induction electrodes of circulation.
Compared with prior art, the present invention is stored in configuration sequence in the touch-control chip, directly utilizes the touch-control chip that induction electrode is scanned, and has reduced the burden of microprocessor, has improved the efficient of microprocessor.
Claims (7)
1. the scan method of a touch-control chip; It is characterized in that: said touch-control chip comprises the register of induction electrode pin, SS and control SS; Said register-stored from the configuration sequence of said touch-control chip microprocessor linked; And control said SS according to configuration sequence and dispose said induction electrode pin, said touch-control chip scans induction electrode.
2. scan method as claimed in claim 1 is characterized in that: said configuration sequence all moves to left according to clock signal at every turn or moves to right one, constantly circulation.
3. scan method as claimed in claim 1 is characterized in that: comprise scanning induction electrode signal and one in the said configuration sequence with reference to the induction electrode signal.
4. scan method as claimed in claim 3 is characterized in that: said scanning induction electrode signal and saidly at every turn move to adjacent the next position with reference to the induction electrode signal simultaneously according to clock signal, dispose next adjacent induction electrode pin.
5. scan method as claimed in claim 3 is characterized in that: said scanning induction electrode with reference to induction electrode signal corresponding reference induction electrode and said scanning induction electrode signal correspondence is adjacent.
6. scan method as claimed in claim 1 is characterized in that: the corresponding induction electrode pin of said each SS.
7. scan method as claimed in claim 1 is characterized in that: said induction electrode pin is according to said induction electrode series arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102207888A CN102750038A (en) | 2012-06-29 | 2012-06-29 | Scanning method of touch control chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102207888A CN102750038A (en) | 2012-06-29 | 2012-06-29 | Scanning method of touch control chip |
Publications (1)
| Publication Number | Publication Date |
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| CN102750038A true CN102750038A (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102207888A Pending CN102750038A (en) | 2012-06-29 | 2012-06-29 | Scanning method of touch control chip |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105389070A (en) * | 2015-12-29 | 2016-03-09 | 昆山国显光电有限公司 | Touch IC (Integrated Circuit), touch device and method for automatically detecting touch screen channel |
| CN105653105A (en) * | 2014-11-14 | 2016-06-08 | 上海东软载波微电子有限公司 | Touch control chip and data acquisition method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101719031A (en) * | 2008-10-09 | 2010-06-02 | 义强科技股份有限公司 | Scanning method of touch panel |
| CN101930314A (en) * | 2009-06-24 | 2010-12-29 | 奇景光电股份有限公司 | Touch control system in order to the control contact panel |
| CN102253751A (en) * | 2011-07-22 | 2011-11-23 | 苏州瀚瑞微电子有限公司 | Wiring structure and positioning method of single-layer ITO (Indium Tin Oxide) |
-
2012
- 2012-06-29 CN CN2012102207888A patent/CN102750038A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101719031A (en) * | 2008-10-09 | 2010-06-02 | 义强科技股份有限公司 | Scanning method of touch panel |
| CN101930314A (en) * | 2009-06-24 | 2010-12-29 | 奇景光电股份有限公司 | Touch control system in order to the control contact panel |
| CN102253751A (en) * | 2011-07-22 | 2011-11-23 | 苏州瀚瑞微电子有限公司 | Wiring structure and positioning method of single-layer ITO (Indium Tin Oxide) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105653105A (en) * | 2014-11-14 | 2016-06-08 | 上海东软载波微电子有限公司 | Touch control chip and data acquisition method thereof |
| CN105389070A (en) * | 2015-12-29 | 2016-03-09 | 昆山国显光电有限公司 | Touch IC (Integrated Circuit), touch device and method for automatically detecting touch screen channel |
| CN105389070B (en) * | 2015-12-29 | 2019-02-22 | 昆山国显光电有限公司 | The method of touch-control IC, touch device and automatic detection touch screen channel |
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Application publication date: 20121024 |