CN105353928A - Large-sized touch screen based scanning method and system - Google Patents
Large-sized touch screen based scanning method and system Download PDFInfo
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- CN105353928A CN105353928A CN201510625714.6A CN201510625714A CN105353928A CN 105353928 A CN105353928 A CN 105353928A CN 201510625714 A CN201510625714 A CN 201510625714A CN 105353928 A CN105353928 A CN 105353928A
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- chips
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
Abstract
The invention is suitable for the technical field of touch control and provides a large-sized touch screen based scanning method. The scanning method is based on two same chips. The scanning method comprises the following steps of: A, connecting the two same chips together in a cascade mode; B, dividing the touch screen into a plurality of regions and enabling the regions to be in communication connection with the two chips; C, the two chips scanning the regions of the touch screen and storing data; and D, the two chips calculating touch coordinates through the stored scanning data. With the adoption of dual-chip detection, regional boundary is reduced in a detection process, the consumption of touch detection resources is reduced, and detection time is shortened; dual-chip data exchange reduces consumption costs of software and hardware; and the scanning method provided by the application is simple in structure and high in efficiency.
Description
Technical field
The invention belongs to touch-screen control technology field, particularly relate to a kind of based on large scale capacitance plate control chip to the scan method of touch-screen and scanning system.
Background technology
Touch-screen, as a kind of novel human-computer interaction interface, obtains the accreditation of people gradually, plays more and more important role in modern society with its friendly interface, the advantage such as easy and simple to handle.In recent years, the universal of smart machine facilitated the prosperity and development touching industry, and then had promoted the update of touch-screen, made touch-screen develop into the various ways such as present condenser type, surface acoustic wave, infrared ray by originally single resistance-type.At present, touch-screen is seen everywhere in daily life, comprises personal hand-held equipment and common query terminal etc., has become a requisite ingredient in social life, the quality of life affecting people that will be deep.Touch-screen develops into and mainly contains now four kinds of technology: resistive touch screen, capacitive touch screen, infrared touch panel and surface acoustic wave touch screen.Wherein capacitive touch screen, the characteristics such as, long service life strong with its high transmission rate, high-wearing feature, stability instead of touch screens, become the main flow of existing market.
The size of capacitive touch screen is increasing, large scale touch-screen dead resistance and electric capacity are all very large, the mode that one chip drives can not meet the requirement of touch-screen to performance, and the major issue that the mode that multiple chips drives will face is exactly how to make data keep synchronous.Current solution touch-screen is divided into a region, and each region is distributed separately a control chip and is used for driving and receiving, and in addition also needs an independent master control to coordinate whole workflow.Although solve the stationary problem of different chip like this, the hardware and software high cost consumed.And a lot of regional border of appearance that this type of solution causes touch-screen artificial, need to consume more resource and time when processing these borderline touches and detecting.
Summary of the invention
The object of the present invention is to provide a kind of scan method based on large scale touch-screen, be intended to solve the technical matters existed in prior art.
The present invention is achieved in that a kind of scan method based on large scale touch-screen, and described scan method is that described scan method comprises the following steps based on two identical chips:
A, two identical chips to be linked together with cascade mode;
B, touch-screen is divided into several regions and communicates to connect with two chips;
C, two chips scan some regions that touch-screen divides and store data respectively respectively;
D, two chips calculate touch coordinate respectively by the scan-data stored.
Further technical scheme of the present invention is: also comprise step after described steps A:
A1, the clock in two chips and scan enable to be connected respectively.
Further technical scheme of the present invention is: also comprise step before described step D:
Data boundary is transferred to a chip to touch-screen scanning by D1, No. two chips scanned touch-screen.
Further technical scheme of the present invention is: also comprise step after described step D:
The coordinate information that computing obtains by D2, No. two chips scanned touch-screen is transferred to a chip to touch-screen scanning;
D3, by the coordinate information received and computing obtains, the primary controller of touch-screen is sent to a chip of touch-screen scanning.
Further technical scheme of the present invention is: when chip scanning, and a chips scanning, two chips receive the data in respective region simultaneously and store.
Further technical scheme of the present invention is: when clock connects, and the cabling time delay that clock outputs to two input end of clock is consistent, and clock line is away from driving and passage and isolation processing; During connection scan enable, output terminal is consistent to the cabling time delay of two input ends.
Further technical scheme of the present invention is: it is that a chips drives that described touch-screen is connected with two chips, and a chips receives; Or a chip drives, two chips receive; Or two chips drive, a chips receives; Or two chips drive, two chips receive.
Another object of the present invention is to provide a kind of scanning system based on large scale touch-screen, described scan method is that described scanning system comprises based on two identical chips:
Cascade module, for linking together two identical chips with cascade mode;
Region dividing communication module, for being divided into several regions by touch-screen and communicating to connect with two chips;
Scanning memory module, for scanning two chips and store data respectively some regions that touch-screen divides respectively;
Coordinate information computing module, for calculating touch coordinate by two chips respectively by the scan-data stored.
Further technical scheme of the present invention is: also comprise after described cascade module:
Link block, for connecting the clock in two chips and scan enable respectively.
Further technical scheme of the present invention is: also comprise before described computing module:
Data boundary transport module, is transferred to for No. two chips scanned touch-screen the chip scanned touch-screen by data boundary;
Also comprise after described computing module:
Data transmission module between chip, the coordinate information that computing obtains by No. two chips for scanning touch-screen is transferred to a chip to touch-screen scanning;
Chip and major control data transport module, send to the primary controller of touch-screen by the coordinate information received and computing obtains for a chip scanning touch-screen.
The invention has the beneficial effects as follows: adopt dual chip to detect, in testing process, reduce regional border, reduce the consumption touching and detect resource, save detection time; Dual chip exchanges data, reduces the consuming cost of software and hardware, and the application's structure is simple, efficiency is high.
Accompanying drawing explanation
Fig. 1 is the two chips cascade schematic diagram that the embodiment of the present invention provides.
Fig. 2 is that the touch-screen that the embodiment of the present invention provides divides schematic diagram.
Fig. 3 is the process flow diagram of the scan method based on large scale touch-screen that the embodiment of the present invention provides.
Fig. 4 is the structured flowchart of the scanning system based on large scale touch-screen that the embodiment of the present invention provides.
Embodiment
Fig. 3 shows the process flow diagram of a kind of scan method based on large scale touch-screen provided by the invention, and details are as follows for it:
Two identical chips are linked together with cascade mode by step S1; This method realizes based on two identical chips, wherein two chips are labeled as a chip and No. two chips respectively, two chips marked are linked together, what wherein the connection of two chips adopted is that cascade mode links together, data communication is carried out, as shown in Figure 1 between two chips being.
Step S2, connects respectively by the clock in two chips and scan enable; After by two chip cascades, together with the clock in two chips being all connected to scan enable, now two clocks of chip and scan enable all input (Ext_8M, Ext_60M, scan_outside) by outside port.A chip is responsible for producing clock and scan enable signals (8M_out, 60M_out, Scan_sync_out), and is outputted on port by these signals.These signals are connected to input port corresponding to two chips simultaneously in outside, ensure two chips synchronous workings.To notice during signal routing that identical signal lead postpones to be consistent, and will away from the driving of chip and receiving cable.After receiving scan enable, two chips work simultaneously, drive touch-screen and corresponding data are saved in respective storage space.Clock and scan enable will ensure that output terminal is consistent to the cabling time delay of two input ends, and clock line also need away from driving and receiving cable and do insulation blocking.
Step S3, is divided into several regions and communicates to connect with two chips by touch-screen; Touch-screen is divided into one or more scanning area, and different scanning region can adopt similar and different scan mode, and the some regions wherein divided all are connected to two chips, carry out data communication; A kind of dividing mode of touch-screen, is divided into 1,2,3,4 four region, as shown in Figure 2 by touch-screen.Wherein 1,2 regions are by chip chip drives; 3,4 regions are by chip No. two chip drives; 1, the data in 3 regions are received by No. two chips and are stored; 2, the data in 4 regions are received by a chip and are stored.Two chips can adopt the scan mode of applicable one's respective area in respective driving and receiving area, and wherein scan mode comprises the scan modes such as single channel, difference, four-way, eight passages.
Step S4, two chips scan some regions that touch-screen divides and store data respectively respectively; On the touchscreen in electric start-up course, system can carry out initialization self-inspection calibration to touch-screen automatically, two scanning chips carry out touch action scanning to the touch-screen dividing some regions, the data scanned are stored respectively, for effective foundation of subsequent calculations coordinate information.
Step S5, is transferred to No. two chips that touch-screen scans the chip scanned touch-screen by data boundary; In scanning process, two chips carry out touch action to some regions of touch-screen respectively and scan, the data message of scanning is stored, wherein the data boundary that oneself scans is transferred to a chip by No. two chips, boundary scan data information is incorporated in an enterprising row relax computing of chip.It is that a chips drives that described touch-screen is connected with two chips, and a chips receives; Or a chip drives, two chips receive; Or two chips drive, a chips receives; Or two chips drive, two chips receive.
Step S6, two chips calculate touch coordinate respectively by the scan-data stored; Touch coordinate wherein calculates according to the data oneself stored by two chips respectively, can calculate touch coordinate in the process of coordinates computed by multiple method, and the coordinate that various ways calculates is carried out multistage check and correction, and the coordinate making it calculate is more accurate.
Step S7, the coordinate information that computing obtains by No. two chips scanned touch-screen is transferred to a chip to touch-screen scanning; At No. two chips, scanning information being transferred to a chip by calculating to obtain after touch coordinate information, integrating touch coordinate information wherein by a chip, the coordinate of overlapping region is consistent.
Step S8, sends to the primary controller of touch-screen to a chip of touch-screen scanning by the coordinate information received and computing obtains; After integrating check and correction coordinate information through a chip, coordinate information is sent to primary controller by a chip, and coordinate information reads by primary controller, and carries out process application to coordinate information, touch information can intuitively touch-screen be shown, for user.
Employing dual chip detects, in testing process, reduce regional border, reduces the consumption touching and detect resource, saves detection time; Dual chip exchanges data, reduces the consuming cost of software and hardware, and the application's structure is simple, efficiency is high.
Fig. 3 shows and another object of the present invention is to provide a kind of scanning system based on large scale touch-screen, and described scan method is that described scanning system comprises based on two identical chips:
Cascade module, for linking together two identical chips with cascade mode;
Region dividing communication module, for being divided into several regions by touch-screen and communicating to connect with two chips;
Scanning memory module, for scanning two chips and store data respectively some regions that touch-screen divides respectively;
Coordinate information computing module, for calculating touch coordinate by two chips respectively by the scan-data stored.
Also comprise after described cascade module:
Link block, for connecting the clock in two chips and scan enable respectively.
Also comprise before described computing module:
Data boundary transport module, is transferred to for No. two chips scanned touch-screen the chip scanned touch-screen by data boundary;
Also comprise after described computing module:
Data transmission module between chip, the coordinate information that computing obtains by No. two chips for scanning touch-screen is transferred to a chip to touch-screen scanning;
Chip and major control data transport module, send to the primary controller of touch-screen by the coordinate information received and computing obtains for a chip scanning touch-screen.
When chip scanning, a chips scanning, two chips receive the data in respective region simultaneously and store.
When clock connects, the cabling time delay that clock outputs to two input end of clock is consistent, and clock line is away from driving and passage and isolation processing; During connection scan enable, output terminal is consistent to the cabling time delay of two input ends.
It is that a chips drives that described touch-screen is connected with two chips, and a chips receives; Or a chip drives, two chips receive; Or two chips drive, a chips receives; Or two chips drive, two chips receive.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. based on a scan method for large scale touch-screen, described scan method is based on two identical chips, and two chips are respectively a chip and No. two chips, and it is characterized in that, described scan method comprises the following steps:
A, two identical chips to be linked together with cascade mode;
B, touch-screen is divided into several regions and communicates to connect with two chips;
C, two chips scan some regions that touch-screen divides and store data respectively respectively;
D, two chips calculate touch coordinate respectively by the scan-data stored.
2. scan method according to claim 1, is characterized in that, also comprises step after described steps A:
A1, the clock in two chips and scan enable to be connected respectively.
3. scan method according to claim 2, is characterized in that, also comprises step before described step D:
Data boundary is transferred to a chip to touch-screen scanning by D1, No. two chips scanned touch-screen.
4. scan method according to claim 3, is characterized in that, also comprises step after described step D:
The coordinate information that computing obtains by D2, No. two chips scanned touch-screen is transferred to a chip to touch-screen scanning;
D3, by the coordinate information received and computing obtains, the primary controller of touch-screen is sent to a chip of touch-screen scanning.
5. scan method according to claim 4, is characterized in that, when chip scanning, a chips scanning, two chips receive the data in respective region simultaneously and store.
6. scan method according to claim 5, is characterized in that, when clock connects, the cabling time delay that clock outputs to two input end of clock is consistent, and clock line is away from driving and passage and isolation processing; During connection scan enable, output terminal is consistent to the cabling time delay of two input ends.
7. scan method according to claim 6, is characterized in that, it is that a chips drives that described touch-screen is connected with two chips, and a chips receives; Or a chip drives, two chips receive; Or two chips drive, a chips receives; Or two chips drive, two chips receive.
8., based on a scanning system for large scale touch-screen, described scan method is based on two identical chips, and it is characterized in that, described scanning system comprises:
Cascade module, for linking together two identical chips with cascade mode;
Region dividing communication module, for being divided into several regions by touch-screen and communicating to connect with two chips;
Scanning memory module, for scanning two chips and store data respectively some regions that touch-screen divides respectively;
Coordinate information computing module, for calculating touch coordinate by two chips respectively by the scan-data stored.
9. scanning system according to claim 8, is characterized in that, also comprises after described cascade module:
Link block, for connecting the clock in two chips and scan enable respectively.
10. scanning system according to claim 9, is characterized in that, also comprises before described computing module:
Data boundary transport module, is transferred to for No. two chips scanned touch-screen the chip scanned touch-screen by data boundary;
Also comprise after described computing module:
Data transmission module between chip, the coordinate information that computing obtains by No. two chips for scanning touch-screen is transferred to a chip to touch-screen scanning;
Chip and major control data transport module, send to the primary controller of touch-screen by the coordinate information received and computing obtains for a chip scanning touch-screen.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510625714.6A CN105353928A (en) | 2015-09-28 | 2015-09-28 | Large-sized touch screen based scanning method and system |
| PCT/CN2016/099931 WO2017054681A1 (en) | 2015-09-28 | 2016-09-23 | Large touch screen-based scanning method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510625714.6A CN105353928A (en) | 2015-09-28 | 2015-09-28 | Large-sized touch screen based scanning method and system |
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| CN105353928A true CN105353928A (en) | 2016-02-24 |
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| CN201510625714.6A Pending CN105353928A (en) | 2015-09-28 | 2015-09-28 | Large-sized touch screen based scanning method and system |
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| CN (1) | CN105353928A (en) |
| WO (1) | WO2017054681A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017054681A1 (en) * | 2015-09-28 | 2017-04-06 | 深圳贝特莱电子科技股份有限公司 | Large touch screen-based scanning method and system |
| CN108628561A (en) * | 2017-03-22 | 2018-10-09 | 鸿富锦精密电子（重庆）有限公司 | Touch device, data transmission system and method based on touch screen |
| WO2020192371A1 (en) * | 2019-03-22 | 2020-10-01 | 敦泰电子有限公司 | Touch screen detection chip combination and terminal device |
| CN112328121A (en) * | 2020-11-27 | 2021-02-05 | 北京集创北方科技股份有限公司 | Electronic device, method and electronic equipment |
| CN113535001A (en) * | 2021-07-24 | 2021-10-22 | 中航华东光电有限公司 | Cascade driving technical method for large-size capacitive touch screen |
| WO2021249131A1 (en) * | 2020-06-09 | 2021-12-16 | 京东方科技集团股份有限公司 | Touch-control display driving module and method, and display apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114089874B (en) * | 2021-11-19 | 2023-09-26 | 武汉华星光电半导体显示技术有限公司 | Touch display panel and touch point measuring method thereof |
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- 2015-09-28 CN CN201510625714.6A patent/CN105353928A/en active Pending
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2016
- 2016-09-23 WO PCT/CN2016/099931 patent/WO2017054681A1/en active Application Filing
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| CN101561731A (en) * | 2008-04-16 | 2009-10-21 | 义隆电子股份有限公司 | Capacitance touch control device and control method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017054681A1 (en) * | 2015-09-28 | 2017-04-06 | 深圳贝特莱电子科技股份有限公司 | Large touch screen-based scanning method and system |
| CN108628561A (en) * | 2017-03-22 | 2018-10-09 | 鸿富锦精密电子（重庆）有限公司 | Touch device, data transmission system and method based on touch screen |
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| CN112328121A (en) * | 2020-11-27 | 2021-02-05 | 北京集创北方科技股份有限公司 | Electronic device, method and electronic equipment |
| CN113535001A (en) * | 2021-07-24 | 2021-10-22 | 中航华东光电有限公司 | Cascade driving technical method for large-size capacitive touch screen |
| CN113535001B (en) * | 2021-07-24 | 2024-01-23 | 中航华东光电有限公司 | Cascade driving technical method for large-size capacitive touch screen |
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| WO2017054681A1 (en) | 2017-04-06 |
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Address after: 518000 Nanshan District, Guangdong, China Hi Tech in the two Shenzhen International Software Park, building 4, 402-403, Applicant after: SHENZHEN BETTERLIFE ELECTRONIC SCIENCE AND TECHNOLOGY CO., LTD. Address before: 518000 Nanshan District, Guangdong, China Hi Tech in the two Shenzhen International Software Park, building 4, 402-403, Applicant before: Shenzhen Betterlift Electronic Technology Co.,Ltd. |
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Application publication date: 20160224 |
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