CN109444608B - Electrostatic discharge detection and protection method for touch screen - Google Patents
Electrostatic discharge detection and protection method for touch screen Download PDFInfo
- Publication number
- CN109444608B CN109444608B CN201811549899.7A CN201811549899A CN109444608B CN 109444608 B CN109444608 B CN 109444608B CN 201811549899 A CN201811549899 A CN 201811549899A CN 109444608 B CN109444608 B CN 109444608B
- Authority
- CN
- China
- Prior art keywords
- esd
- data
- touch screen
- touch
- filtering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
-
- 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
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Electromagnetism (AREA)
- Human Computer Interaction (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention discloses a method for detecting and protecting electrostatic discharge of a touch screen, which comprises the following steps: an ESD detection step, when the touch point of the previous frame of touch data is not present and the touch point of the current touch data is generated, performing characteristic analysis on the touch point data, and executing an ESD filtering step when the current touch data is judged to be ESD interference data; and an ESD filtering step, namely filtering the abnormal data points caused by the ESD interference through a preset filtering algorithm. According to the invention, the problem of touch screen ESD interference which cannot be solved by hardware is solved by analyzing the data phenomenon of the influence of ESD impact on the touch screen. Meanwhile, the ESD interference can be accurately detected through a software algorithm, and corresponding filtering and stability optimization are carried out, so that the other aspect of the ESD interference optimization of the touch screen is effectively improved. Compared with the prior art, the invention can prevent the touch screen from working abnormally when being impacted by ESD, thereby solving the problem of ESD interference of the touch screen and greatly improving the ESD performance of the touch screen.
Description
Technical Field
The invention relates to a touch screen, in particular to a touch screen electrostatic discharge detection and protection method.
Background
With the development of smart phones and devices, capacitive touch screen products are more and more widely applied. Mainly because capacitive touch screens are rugged, fast to react, and have a good experience. Especially, when the method is applied to smart phone products, the touch experience effect of the capacitive touch screen can be well interpreted. The smart phone is frequently contacted every day, and even the smart phone becomes a part of our life, or the capacitive touch screen becomes a part of our life. Therefore, the ESD stability of the capacitive touch screen naturally becomes a focus of attention, even though it is a hard index of the capacitive touch screen. When the capacitive touch screen is impacted by the ESD, if the ESD performance of the touch screen is poor, abnormal working phenomena such as no touch action or touch disorderly action and the like are easy to occur after the capacitive touch screen is impacted by the ESD. Improper handling greatly affects use. How to detect and protect the ESD interference of the capacitive touch screen is an urgent problem to be solved.
In the prior art, when a capacitive touch screen is impacted by ESD, the touch screen has abnormal working phenomena such as a jump point (a frequently-called error operation), a frozen touch screen (no response to touch), heat generated by a touch chip, and the like. 1, revising hardware to optimize hardware of the capacitive touch screen, and enhancing the filtering strength of the capacitive touch screen to ESD and the conductive force to the ground; 2. the version-changed chip optimizes the ESD resistance of the touch chip, improves the ESD resistance of the chip, and prevents the chip from being incapable of working due to ESD impact. Thereby protecting the capacitive touch screen from or reducing ESD interference. However, the prior art mainly has the following defects:
firstly, the touch information interaction between the capacitive touch screen and the touch screen host is increased, the detection and protection performance of the touch screen ESD is effectively improved, but the complexity of touch driving logic of the touch screen host is increased, and the workload of a host driving engineer is increased;
secondly, the ESD mode of the capacitive touch screen is identified according to the ESD impact data characteristic of the capacitive touch screen, the ESD impact of the screen body can be accurately detected, and a good basis is provided for an ESD protection algorithm of the touch screen. However, if the touch screen encounters other strong external interference, and the data of touch detection during interference is similar to the ESD detection data, ESD detection false detection is easily caused.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method for detecting and protecting electrostatic discharge of a touch screen, which can prevent a touch screen from working abnormally when the touch screen is impacted by ESD, thereby solving the problem of ESD interference of the touch screen and improving ESD performance.
In order to solve the technical problems, the invention adopts the following technical scheme.
A method for detecting and protecting electrostatic discharge of a touch screen comprises the following steps: an ESD detection step, when the touch point of the previous frame of touch data is not present and the touch point of the current touch data is generated, performing characteristic analysis on the touch point data, and executing an ESD filtering step when the current touch data is judged to be ESD interference data; and an ESD filtering step, namely filtering the abnormal data points caused by the ESD interference through a preset filtering algorithm.
Preferably, the ESD detection step comprises the following processes: step S10, counting the number CountA of each node data with the data value greater than a preset threshold THA aiming at the row where the current point is located, wherein the threshold THA is an ESD data characteristic threshold; step S11, calculating the sum SumA of all data of the upper row and the lower row at the position where the threshold THA is located, counting the number CountB of all data, and calculating the average value AvgVal which is SumA/CountB; step S12, determining whether the number CountA is greater than a preset ESD data characteristic number threshold value EsdDataNum; step S13, judging whether the average value AvgVal is smaller than a preset threshold value THB, wherein the threshold value THB is a non-ESD data characteristic threshold value; in step S14, if the determination results in step S12 and step S13 are both yes, the current frame data is detected as ESD interference data.
Preferably, the ESD filtering step comprises: step S20, adding a touch point filtering algorithm, and under the condition that the touch data of the previous frame has no touch point, if the touch data point of the current frame is greater than the touch data point of the previous frame, keeping the current point as the touch data point of the previous frame under the preset filtering frame number FilterNum; step S21, when an ESD interference state is detected, setting a touch point data filtering frame number FilterNum according to the data characteristics of the previous line and the next line of the current point; and step S22, filtering the abnormal data points caused by the ESD interference by the filtering algorithm according to the filtering frame number FilterNum so as to eliminate the disordered jumping point phenomenon of the ESD interference.
Preferably, the ESD filtering step further comprises: step S23, counting the number of sustained frames of the ESD interference data, and if the number of sustained frames of the ESD interference data is greater than a preset threshold value of sustained frames EsdKeepNum, determining that there is an abnormality in the operation of the analog circuit of the touch screen chip.
Preferably, the method further comprises the step of touch screen and touch screen host interaction protection: step S30, adding a readable/writable interface PortA of a touch screen host for the touch screen chip, wherein the touch screen host carries out read operation and write operation on the PortA at regular time; step S31, the touch screen host judges whether the read PortA value is consistent with the updated value, if not, the touch screen host judges that the touch screen has the hang-up phenomenon which does not work due to ESD impact; and step S32, the touch screen host resets the touch screen through hardware control so as to enable the touch screen chip to enter the working state again.
The method for detecting and protecting the electrostatic discharge of the touch screen has the advantages that the problem of the ESD interference of the touch screen, which cannot be solved by hardware, is solved by analyzing the data phenomenon of the influence of the ESD impact on the touch screen. Meanwhile, the ESD interference can be accurately detected through a software algorithm, and corresponding filtering and stability optimization are carried out, so that the other aspect of the ESD interference optimization of the touch screen is effectively improved. Compared with the prior art, the invention can prevent the touch screen from working abnormally when being impacted by ESD, thereby solving the problem of ESD interference of the touch screen and greatly improving the ESD performance of the touch screen.
Drawings
FIG. 1 is a schematic structural diagram of a mutual capacitance touch screen;
FIG. 2 is a flow chart of a filtering algorithm;
FIG. 3 is a flow diagram of interface PortA configuration for a touch screen;
FIG. 4 is a flow chart of the host reading and writing interface PortA.
Detailed Description
The invention is described in more detail below with reference to the figures and examples.
The invention discloses a method for detecting and protecting electrostatic discharge of a touch screen, which comprises the following steps:
an ESD detection step, when the touch point of the previous frame of touch data is not present and the touch point of the current touch data is generated, performing characteristic analysis on the touch point data, and executing an ESD filtering step when the current touch data is judged to be ESD interference data;
and an ESD filtering step, namely filtering the abnormal data points caused by the ESD interference through a preset filtering algorithm.
The method for detecting and protecting the electrostatic discharge of the touch screen has the advantages that the problem of the ESD interference of the touch screen, which cannot be solved by hardware, is solved by analyzing the data phenomenon of the influence of the ESD impact on the touch screen. Meanwhile, the ESD interference can be accurately detected through a software algorithm, and corresponding filtering and stability optimization are carried out, so that the other aspect of the ESD interference optimization of the touch screen is effectively improved. Compared with the prior art, the invention can prevent the touch screen from working abnormally when being impacted by ESD, thereby solving the problem of ESD interference of the touch screen and greatly improving the ESD performance of the touch screen.
In a preferred embodiment of the present invention, please refer to fig. 1, in a mutual capacitance touch screen body, wherein: TX1, TX2 and TX3 are driving signal terminals, and RX1, RX2, RX3, RX4, RX5 and RX6 are sensing signal receiving terminals;
{ D11, D12, D13, D14, D15, D16, D21, D22, D23, D24, D25, D26, D31, D32, D33, D34, D35 and D36} are data sensing variation quantities of each node of the touch screen.
Further, the ESD detection step comprises the following processes:
step S10, counting the number CountA of each node data with the data value greater than a preset threshold THA aiming at the row where the current point is located, wherein the threshold THA is an ESD data characteristic threshold;
step S11, calculating the sum SumA of all data of the upper row and the lower row at the position where the threshold THA is located, counting the number CountB of all data, and calculating the average value AvgVal which is SumA/CountB;
step S12, determining whether the number CountA is greater than a preset ESD data characteristic number threshold value EsdDataNum;
step S13, judging whether the average value AvgVal is smaller than a preset threshold value THB, wherein the threshold value THB is a non-ESD data characteristic threshold value;
in step S14, if the determination results in step S12 and step S13 are both yes, the current frame data is detected as ESD interference data.
In the practical application process, the ESD interference touch screen is an instantaneous impact signal, which usually shows that the ESD interference touch screen strongly interferes with an RXn (a certain sensing signal receiving end) signal in a certain TXn (a certain driving signal) driving direction; while normal touches typically cover more than one channel width. And interpreting the touch data by utilizing the characteristic that the ESD interferes with the touch screen, and finishing to obtain the ESD detection method.
By way of example, in the ESD detection step of this embodiment: and analyzing the touch point data characteristics under the condition that no touch point is found in the previous frame of touch data and the touch point is found in the current touch data:
firstly, for example, point a (2,3) is the current point position, and count the number CountA (the number greater than the ESD data characteristic threshold) of data values { D21, D22, D23, D24, D25, D26} of each node in the row where point a is located, which are greater than the set threshold THA (ESD data characteristic threshold); if the data D22, D23, D24 and D25 are greater than THA, the number of D22, D23, D24 and D25 is CountA which is 4;
secondly, counting the sum of all data SumA (sum of all data) and the number of data CountB (number of data) of the upper row and the lower row which are larger than the position of the threshold THA, and calculating the average value AvgVal which is SumA/CountB; for example, if the data D22, D23, D24 and D25 are greater than THA, SumA ═ D12+ D13+ D14+ D15+ D32+ D33+ D34+ D35, and CountB is the number of data summed by SumA, i.e., CountB ═ 8;
in addition, whether CountA is larger than a set ESD data characteristic number threshold EsdataNum (ESD data characteristic number threshold) is judged, whether AvgVal is smaller than a set threshold THB (non-ESD data characteristic threshold) is judged, and if the two conditions are met, the current frame data is judged to be ESD interference data.
Further, the ESD filtering step comprises:
step S20, adding a touch point filtering algorithm, and under the condition that the touch data of the previous frame has no touch point, if the touch data point of the current frame is greater than the touch data point of the previous frame, keeping the current point as the touch data point of the previous frame under the preset filtering frame number FilterNum;
step S21, when an ESD interference state is detected, setting a touch point data filtering frame number FilterNum according to the data characteristics of the previous line and the next line of the current point;
step S22, filtering abnormal data points caused by ESD interference according to the filtering frame number FilterNum by the filtering algorithm so as to eliminate the phenomenon of disordered jumping points of the ESD interference;
step S23, counting the number of sustained frames of the ESD interference data, and if the number of sustained frames of the ESD interference data is greater than a preset threshold value of sustained frames EsdKeepNum, determining that there is an abnormality in the operation of the analog circuit of the touch screen chip.
For example, in the ESD filtering step of this embodiment:
firstly, adding a touch point filtering algorithm, and referring to fig. 2 for a filtering calculation flow, if the current point number is greater than the point number of the previous frame under the condition that no point exists in the previous frame touch, keeping the current point number as the point number of the previous frame under a set frame number FilterNum (the frame number required to be filtered);
secondly, after the ESD interference state is detected, setting the filtering frame number FilterNum of the touch point data according to the data characteristics of the previous line and the next line of the point A, namely the data D13 and D33;
thirdly, filtering abnormal data points caused by ESD interference by a filtering algorithm according to the FilterNum value, eliminating the disordered jumping point phenomenon of the ESD interference, and solving the interference problem of mistakenly touching the touch screen caused by the ESD interference;
in addition, the number of ESD interference data continuous frames needs to be counted, because ESD interference is an instantaneous impact signal, if the number of ESD data retention frames is greater than the set retention frame number threshold esdkeempum (set retention frame number threshold), it is presumed that there is an abnormality in the operation of the analog circuit of the chip, and at this time, the chip is reset through the reset function of the chip. This is an alternative that can be turned on in the presence of this ESD shock hang-up and turned off by default to save resources and reduce ESD false detection.
Based on the principle, the invention also comprises the step of interactive protection between the touch screen and the touch screen host machine:
step S30, adding a readable/writable interface PortA of a touch screen host for the touch screen chip, wherein the touch screen host carries out read operation and write operation on the PortA at regular time;
step S31, the touch screen host judges whether the read PortA value is consistent with the updated value, if not, the touch screen host judges that the touch screen has the hang-up phenomenon which does not work due to ESD impact;
and step S32, the touch screen host resets the touch screen through hardware control so as to enable the touch screen chip to enter the working state again.
For example, the method for protecting interaction between the touch screen and the touch screen host specifically includes:
referring to fig. 3 and 4, an interface PortA (read/write interface) that can be read/written by a touch screen host is added to the touch chip, the host reads and writes the PortA at regular time, and the host channel determines whether the value read to the PortA matches with the updated value, and if the value does not match, it is presumed that the touch screen can have ESD impact and is not in operation. For example, default or host timing writes 0x88 to PortA, while the touch screen body updates and adjusts PortA to 0x66 every frame when operating, the host channel judges the read value of PortA does not accord with the updated value (0x66), supposing that the touch screen may have ESD impact hang-up phenomenon, resulting in abnormal updating of the value of the PortA interface or leading to abnormal operation of the touch screen communication interface, resulting in the host not reading the correct value of PortA; at this time, the touch screen is reset by the drive control hardware so that the touch screen can work again. And further solve the problem that the touch of the touch screen is not reacted due to ESD interference.
The method for detecting and protecting the electrostatic discharge of the touch screen has the advantages that the ESD performance of the touch screen is improved, the influence on the use of a product due to the abnormal work of the touch screen when the touch screen is impacted by the ESD is effectively prevented, the application requirement is well met, the method is suitable for being popularized and applied in touch screen products, and the application prospect is good.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the technical scope of the present invention should be included in the scope of the present invention.
Claims (4)
1. A method for detecting and protecting electrostatic discharge of a touch screen is characterized by comprising the following steps:
an ESD detection step, when the touch point of the previous frame of touch data is not present and the touch point of the current touch data is generated, performing characteristic analysis on the touch point data, and executing an ESD filtering step when the current touch data is judged to be ESD interference data;
an ESD filtering step, namely filtering abnormal data points caused by ESD interference through a preset filtering algorithm;
the ESD detecting step comprises the following processes:
step S10, counting the number CountA of each node data with the data value greater than a preset threshold THA aiming at the row where the current point is located, wherein the threshold THA is an ESD data characteristic threshold;
step S11, calculating the sum SumA of all data of the upper row and the lower row at the position where the threshold THA is located, counting the number CountB of all data, and calculating the average value AvgVal which is SumA/CountB;
step S12, determining whether the number CountA is greater than a preset ESD data characteristic number threshold value EsdDataNum;
step S13, judging whether the average value AvgVal is smaller than a preset threshold value THB, wherein the threshold value THB is a non-ESD data characteristic threshold value;
in step S14, if the determination results in step S12 and step S13 are both yes, the current frame data is detected as ESD interference data.
2. The touch screen electrostatic discharge detection and protection method of claim 1, wherein the ESD filtering step comprises:
step S20, adding a touch point filtering algorithm, and under the condition that the touch data of the previous frame has no touch point, if the touch data point of the current frame is greater than the touch data point of the previous frame, keeping the current point as the touch data point of the previous frame under the preset filtering frame number FilterNum;
step S21, when an ESD interference state is detected, setting a touch point data filtering frame number FilterNum according to the data characteristics of the previous line and the next line of the current point;
and step S22, filtering the abnormal data points caused by the ESD interference by the filtering algorithm according to the filtering frame number FilterNum so as to eliminate the disordered jumping point phenomenon of the ESD interference.
3. The touch screen electrostatic discharge detection and protection method of claim 2, wherein the ESD filtering step further comprises:
step S23, counting the number of sustained frames of the ESD interference data, and if the number of sustained frames of the ESD interference data is greater than a preset threshold value of sustained frames EsdKeepNum, determining that there is an abnormality in the operation of the analog circuit of the touch screen chip.
4. The touch screen electrostatic discharge detection and protection method of claim 1, further comprising the touch screen and touch screen host interaction protection step:
step S30, adding a readable/writable interface PortA of a touch screen host for the touch screen chip, wherein the touch screen host carries out read operation and write operation on the PortA at regular time;
step S31, the touch screen host judges whether the read PortA value is consistent with the updated value, if not, the touch screen host judges that the touch screen has the hang-up phenomenon which does not work due to ESD impact;
and step S32, the touch screen host resets the touch screen through hardware control so as to enable the touch screen chip to enter the working state again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811549899.7A CN109444608B (en) | 2018-12-18 | 2018-12-18 | Electrostatic discharge detection and protection method for touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811549899.7A CN109444608B (en) | 2018-12-18 | 2018-12-18 | Electrostatic discharge detection and protection method for touch screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109444608A CN109444608A (en) | 2019-03-08 |
| CN109444608B true CN109444608B (en) | 2021-01-05 |
Family
ID=65559986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811549899.7A Active CN109444608B (en) | 2018-12-18 | 2018-12-18 | Electrostatic discharge detection and protection method for touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109444608B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112731012B (en) * | 2020-12-17 | 2024-10-11 | 展讯半导体(成都)有限公司 | Static discharge detection method and device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6369994B1 (en) * | 1998-07-31 | 2002-04-09 | International Business Machines Corporation | Method and apparatus for handling an ESD event on an SOI integrated circuit |
| CN102314277A (en) * | 2011-09-30 | 2012-01-11 | 惠州Tcl移动通信有限公司 | Anti-static method of capacitive touch screen and corresponding capacitive touch screen |
| CN102830875A (en) * | 2012-08-10 | 2012-12-19 | 广东欧珀移动通信有限公司 | Method for improving electrostatic resistance of capacitive screen by filtering algorithm |
| CN103905654A (en) * | 2012-12-28 | 2014-07-02 | 联芯科技有限公司 | Method and system for processing ESD interference in display screen of MIPI |
| CN104320109A (en) * | 2014-09-28 | 2015-01-28 | 迈普通信技术股份有限公司 | Pulse anti-interference method and device |
| CN107544713A (en) * | 2017-08-31 | 2018-01-05 | 美的智慧家居科技有限公司 | Capacitance plate control method, device and terminal device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9476926B2 (en) * | 2013-02-21 | 2016-10-25 | HGST Netherlands B.V. | Real time electrostatic discharge (ESD) detection |
-
2018
- 2018-12-18 CN CN201811549899.7A patent/CN109444608B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6369994B1 (en) * | 1998-07-31 | 2002-04-09 | International Business Machines Corporation | Method and apparatus for handling an ESD event on an SOI integrated circuit |
| CN102314277A (en) * | 2011-09-30 | 2012-01-11 | 惠州Tcl移动通信有限公司 | Anti-static method of capacitive touch screen and corresponding capacitive touch screen |
| CN102830875A (en) * | 2012-08-10 | 2012-12-19 | 广东欧珀移动通信有限公司 | Method for improving electrostatic resistance of capacitive screen by filtering algorithm |
| CN103905654A (en) * | 2012-12-28 | 2014-07-02 | 联芯科技有限公司 | Method and system for processing ESD interference in display screen of MIPI |
| CN104320109A (en) * | 2014-09-28 | 2015-01-28 | 迈普通信技术股份有限公司 | Pulse anti-interference method and device |
| CN107544713A (en) * | 2017-08-31 | 2018-01-05 | 美的智慧家居科技有限公司 | Capacitance plate control method, device and terminal device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109444608A (en) | 2019-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8542213B2 (en) | Touched position detection method for touch panel | |
| US8717304B2 (en) | Apparatus, method, and medium for multi-touch decision | |
| US7982719B2 (en) | Fault-tolerant method, apparatus, and medium for touch sensor | |
| CN102855032A (en) | Baseline updating method and touch device | |
| US10691252B2 (en) | Touch detection chip, touch panel and touch detecting method | |
| KR101572331B1 (en) | Touch sensing system and method for providing proximity sensing function using touch screen panel | |
| CN102722286A (en) | Reference updating method of touch detection terminal capable of removing large-scale interference and system | |
| CN108027692B (en) | Method for improving fault tolerance of touch screen and touch screen terminal | |
| JP5958974B2 (en) | Touchpad input device and touchpad control program | |
| CN109444608B (en) | Electrostatic discharge detection and protection method for touch screen | |
| CN106250257A (en) | A kind of electrostatic restoration methods and mobile terminal | |
| CN103324344A (en) | Method and mobile terminal for processing break line during touch screen sliding process | |
| JP2013122625A (en) | Information processing device, input device, input device module, program, and input processing method | |
| KR20160124783A (en) | Systems and methods for improved touch screen accuracy | |
| CN101859219A (en) | Method and device for debouncing of touch spot coordinates of touch screen | |
| CN110568945B (en) | Dynamic calibration method for active pen water outlet reference, active pen and electronic equipment | |
| JP2021530007A (en) | Data detection method and device, storage medium, touch device | |
| CN111095181B (en) | Information processing method, related apparatus and computer storage medium | |
| EP3141990B1 (en) | Threshold adaptation for a multi-touch input device | |
| CN111736722B (en) | Detection method, device and equipment for shielding state of capacitive touch screen | |
| CN105739776A (en) | Pressure value calibration method and apparatus, and mobile terminal | |
| CN107807747B (en) | Touch system and touch detection method thereof | |
| US20210397285A1 (en) | Method and apparatus for determining a touch point | |
| CN105700684A (en) | Sensor data interrupt processing method and device of head display device | |
| KR20150114364A (en) | Touch data segmentation method of touch controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |