WO2014032474A1 - 一种电容式触摸屏的校准方法和电容式触摸装置 - Google Patents
一种电容式触摸屏的校准方法和电容式触摸装置 Download PDFInfo
- Publication number
- WO2014032474A1 WO2014032474A1 PCT/CN2013/078557 CN2013078557W WO2014032474A1 WO 2014032474 A1 WO2014032474 A1 WO 2014032474A1 CN 2013078557 W CN2013078557 W CN 2013078557W WO 2014032474 A1 WO2014032474 A1 WO 2014032474A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- capacitance value
- reference capacitance
- difference
- preset
- threshold
- Prior art date
Links
Classifications
-
- 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
- G06F3/04186—Touch location disambiguation
-
- 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
Definitions
- the capacitive touch screen is based on the change in capacitance on the touch screen to determine whether there is a touch operation. Therefore, when the capacitive touch screen is powered on, firstly, the reference capacitance value when there is no interference on the capacitive touch screen is obtained, and the reference capacitance value is used as a reference to detect the capacitance change on the touch screen, thereby determining whether there is a touch operation on the touch screen.
- the capacitance of the touch screen changes once the foreign matter is removed.
- the touch screen detects that the capacitance change value lasts for a certain period of time, the touch screen forcibly updates the reference capacitance value.
- this calibration method will cause the reference capacitance value to be updated when the person deliberately presses for a long time, which may cause miscalibration and may cause the normal touch operation to fail.
- the capacitance change value detected by the touch screen may have multiple positive and negative values, and the ratio of the positive and negative values is reached.
- the touch screen calibrates the reference capacitance value.
- the ratio of positive and negative values is difficult to define accurately, and there may be an influence on the capacitance value of the touch screen due to the presence of a conductor or a charging device around the touch screen. Therefore, the calibration method is unstable and may cause miscalibration.
- Embodiments of the present invention provide a calibration method of a capacitive touch screen and a capacitive touch device, which can calibrate a capacitive touch screen and avoid calibration errors of the capacitive touch screen, thereby preventing operation of the capacitive touch screen from failing.
- a method for calibrating a capacitive touch screen comprising:
- determining a reference capacitance value of the touch detection point according to the first difference value and a preset first threshold value specifically includes:
- the temporary reference capacitance value is used as the reference capacitance value
- determining the reference capacitance value of the touch detection point according to the second difference value and the preset second threshold value according to the first possible implementation manner specifically includes:
- determining the reference capacitance value of the touch detection point according to the third difference value and the preset third threshold value specifically includes:
- the method further includes: And if the second difference is less than the preset second threshold, updating the backup reference capacitance value to the temporary reference capacitance value;
- the backup reference capacitance value is also updated to the detected capacitance value.
- the method further includes:
- a capacitive touch device comprising a capacitive touch screen, the capacitive touch device further comprising: a processor;
- the processor is configured to obtain, when the capacitive touch screen is powered on, a temporary reference capacitance value of the touch detection point, and a touch reference point backup reference capacitance value and a temporary reference capacitance value of the touch detection point.
- the first difference of the difference is configured to obtain, when the capacitive touch screen is powered on, a temporary reference capacitance value of the touch detection point, and a touch reference point backup reference capacitance value and a temporary reference capacitance value of the touch detection point.
- the processor is further configured to determine a reference capacitance value of the touch detection point according to the first difference value and a preset first threshold value.
- the determining, by the processor, the reference capacitance value of the touch detection point according to the first difference value and the preset first threshold value specifically includes:
- the processor uses the temporary reference capacitance value as the reference capacitance value;
- the processor obtains a detected capacitance value of the touch detection point
- Determining a reference capacitance value of the touch detection point according to the second difference value and a preset second threshold value includes:
- the processor will base the touch detection point
- the quasi-capacitance value is updated to the temporary reference capacitance value
- the processor obtains a third difference between the second difference and the first difference
- the determining, by the processor, the reference capacitance value of the touch detection point according to the third difference and the preset third threshold includes:
- the processor updates a reference capacitance value of the touch detection point to the detected capacitance value.
- the processor is further configured to:
- the processor further updates the backup reference capacitance value to the temporary reference capacitance value;
- the processor further updates the backup reference capacitance value to the detected capacitance value.
- the processor is further configured to:
- the processor updates a reference capacitance value of another touch detection point of the touch screen to the temporary reference capacitance value
- the processor updates a reference capacitance value of another touch detection point of the touch screen to the backup reference capacitance value;
- the processor updates a reference capacitance value of another touch detection point of the touch screen to the detection capacitance value.
- an embodiment of the present invention provides a calibration method and a touch device for a capacitive touch screen. Since the reference capacitance value of the capacitive touch screen may be affected by an external environment (such as temperature, humidity, etc.), It may be subject to external interference (such as when there is a foreign object on the touch screen or when the human touches), so the method determines according to the first difference between the backup reference capacitance value of the touch point of the touch screen and the temporary reference capacitance value when the touch screen is powered on.
- an external environment such as temperature, humidity, etc.
- the reference capacitance value of the touch detection point wherein the backup reference capacitance value is a reference capacitance value when the touch screen is in an environment without interference, and the temporary reference capacitance value is an environment and interference when the touch screen is powered on at the current time.
- the first difference of the difference between the reference capacitance values if the first difference is less than the preset first threshold, indicating that the environment in which the touch screen is powered on is close to the environment in which the backup reference capacitance value is measured, and It can be considered that the touch screen is not interfered when it is powered on, and the temporary reference capacitance value can be used as the reference capacitance value of the touch screen.
- the first difference is greater than the preset first threshold, it indicates that the environment in which the touch screen is powered on differs greatly from the environment in which the backup reference capacitance value is measured or when the touch screen is powered on.
- the touch device then needs to further calibrate the touch point. Since the calibration method and the touch device of the capacitive touch screen take into account the backup reference capacitance value, the calibration of the touch screen is referenced, so that the calibration method can calibrate the reference capacitance value of the touch screen more finely, instead of When the touch screen is powered on, the capacitance value of the touch screen is directly detected and calibrated, thereby preventing the operation of the touch screen from being invalid.
- FIG. 1 is a schematic flowchart of a calibration method of a capacitive touch screen according to an embodiment of the present invention
- FIG. 2 is a schematic flowchart of another method for calibrating a capacitive touch screen according to an embodiment of the present invention
- a schematic structural view of a touch device The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
- the embodiment of the invention provides a calibration method for a capacitive touch screen. Specifically, as shown in FIG. 1 , the method includes: 101. When the capacitive touch screen is powered on, the capacitive touch device obtains a temporary reference capacitance value of a touch detection point of the capacitive touch screen.
- the temporary reference capacitance value is a sampling capacitance value of the touch detection point acquired by the capacitive touch device each time the capacitive touch screen is powered on. For example, when the mobile phone with the capacitive touch screen is turned on, the mobile phone will use the sampling capacitance value of the touch detection point as the temporary reference capacitance value of the touch detection point of the capacitive touch screen.
- the capacitive touch device obtains a first difference between a backup reference capacitance value of the touch detection point and a temporary reference capacitance value of the touch detection point.
- the backup reference capacitance value of the touch detection point is a reference capacitance value when the touch screen is in an environment without interference.
- the backup reference capacitance value may be a capacitance value set by the touch screen at the factory. Of course, it can also be the reference capacitance value calibrated by this method.
- the reference capacitance value is a capacitance value used when the capacitive touch device detects whether there is a touch operation. Specifically, when the capacitive touch device detects whether there is a touch operation, it is determined by comparing the detected capacitance value with the reference capacitance value.
- Determining, according to the first difference value and the preset first threshold value, the reference capacitance value of the touch detection point may be: if the first difference value is less than a preset first threshold, indicating the touch detection point The environment does not change, and the backup reference capacitance value may be selected as the reference capacitance value, or the temporary reference capacitance value may be selected as the reference capacitance value. If the first difference is greater than the preset first threshold, it may indicate that the touch point is interfered or the environment of the touch point changes, and the backup reference capacitance value and the temporary reference capacitance value are used as reference capacitance values. Inaccurate, it may cause misoperation, so that the touch screen can calibrate the reference capacitance value of the touch detection point by other methods.
- the capacitance value of the touch point can be re-acquired, and the re-acquired capacitance value can be used as the reference capacitance value.
- the capacitance value of the touch point can be calibrated in other manners, which is not specifically limited in the embodiment of the present invention.
- the embodiment of the present invention provides a calibration method of a capacitive touch screen. Since the reference capacitance value of the capacitive touch screen may be affected by an external environment (such as temperature, humidity, etc.), it may also be externally affected. Interference (such as when there is a foreign object on the touch screen or a human touch), so the method determines the touch according to a first difference between the backup reference capacitance value of the touch point of the touch screen and the temporary reference capacitance value when the touch screen is powered on.
- the reference capacitance value of the detection point, where the backup reference capacitance The value is the reference capacitance value when the touch screen is in an environment without interference.
- the temporary reference capacitance value is the reference capacitance value detected under the environment and interference conditions when the touch screen is powered on.
- the touch device when the touch device is powered on, the touch device first obtains a temporary reference capacitance value of the touch detection point of the capacitive touch screen, and then obtains the touch detection point backup reference capacitance value and the touch detection point temporarily.
- the first difference of the difference between the reference capacitance values if the first difference is less than the preset first threshold, indicating that the environment in which the touch screen is powered on is close to the environment in which the backup reference capacitance value is measured, and It can be considered that the touch screen is not interfered when it is powered on, and the temporary reference capacitance value can be used as the reference capacitance value of the touch screen.
- the touch device When the first difference is greater than the preset first threshold, it indicates that the environment in which the touch screen is powered on differs greatly from the environment in which the backup reference capacitance value is measured or when the touch screen is powered on. Then the touch device needs to further calibrate the touch point. Since the calibration method of the capacitive touch screen takes into account the backup reference capacitance value, the calibration of the touch screen is referenced, so that the calibration method can calibrate the reference capacitance value of the touch screen more finely, instead of on the touch screen. When the power is on, the capacitance value of the touch screen is directly detected and calibrated, thereby preventing the operation of the touch screen from being invalid.
- the embodiment of the invention provides a calibration method for a capacitive touch screen. Specifically, as shown in FIG. 2, the method includes:
- the capacitive touch device obtains a temporary reference capacitance value of a touch detection point of the capacitive touch screen.
- the temporary reference capacitance value is a sampling capacitance value of the touch detection point acquired by the capacitive touch device each time the capacitive touch screen is powered on. For example, when the mobile phone with the capacitive touch screen is turned on, the mobile phone will use the sampling capacitance value of the touch detection point as the temporary reference capacitance value of the touch detection point of the capacitive touch screen.
- the capacitive touch device obtains a first difference between a backup reference capacitance value of the touch detection point and a temporary reference capacitance value of the touch detection point.
- the backup reference capacitance value of the touch detection point is a reference capacitance value when the touch screen is in an environment without interference.
- the backup reference capacitance value may be a capacitance value set by the touch screen at the factory. Of course, it can also be the reference capacitance value calibrated by this method.
- the capacitive touch device uses the temporary reference capacitance value as the reference capacitance value.
- the preset first threshold is o and the reference capacitance is c
- the environmental condition when the temporary reference capacitance value of the touch detection point is acquired and the environment when the backup reference capacitance value is detected are described.
- the situation is close.
- the temporary reference is actually obtained from the detected value at that time, it is closer to the actual situation, and the touch effect is better.
- the capacitive touch device obtains a detected capacitance value of the touch detection point.
- the capacitive touch device needs to further acquire the current detection capacitance value of the touch detection point.
- the capacitive touch device obtains a second difference between a detected capacitance value of the touch detection point and a temporary reference capacitance value of the touch detection point.
- the capacitive touch device updates a reference capacitance value of the touch detection point to the temporary reference capacitance value.
- the preset second threshold is P.
- m ⁇ p it indicates that the current environmental condition of the touch detection point is close to the environmental condition when the temporary reference capacitance value is detected, but the backup reference capacitance is detected.
- the environmental conditions at the time of the change have changed. For example, the temperature and humidity of the environment in which the capacitive touch screen is located has changed.
- the capacitive touch device obtains a third difference between the second difference and the first difference.
- the current environmental condition of the touch detection point may be changed compared with the environmental condition when the temporary reference capacitance value is detected, or may be The touch detection point is disturbed, thereby causing the detection capacitance value and the temporary reference capacitance The difference in values is large.
- the touch device In order to obtain an accurate reference capacitance value, the touch device needs to further acquire a third difference between the second difference and the first difference.
- the capacitive touch device updates a reference capacitance value of the touch detection point to the backup reference capacitance value.
- the third threshold is q
- n ⁇ q that is, d_a ⁇ q
- the detection point is disturbed when detecting the temporary reference capacitance value.
- the capacitive touch device updates a reference capacitance value of the touch detection point to the detection capacitance value.
- n > q that is, da > q
- the second difference is less than a preset second threshold, that is, when m ⁇ p
- the current environmental condition of the touch detection point is compared with an environmental condition when the backup reference capacitance value is detected.
- a change has taken place.
- the environmental condition of the touch screen does not change much during a period of time, but the environmental condition of detecting the backup reference capacitance value at the factory and the current environmental condition of the capacitive touch screen may vary greatly, so as to simplify
- the capacitive touch device can update the reference capacitance value only by determining the first threshold.
- the backup reference capacitance value may be updated to the detected capacitance value.
- the reference data of other touch detection points may also be The value is also updated to the reference capacitance value after the touch detection point is calibrated.
- the specific process is: if the second difference is less than the preset second threshold, the reference capacitance value of the other touch detection points of the touch screen is updated. Is the temporary reference capacitance value;
- the embodiment of the present invention provides a calibration method of a capacitive touch screen. Since the reference capacitance value of the capacitive touch screen may be affected by an external environment (such as temperature, humidity, etc.), it may also be externally affected. Interference (such as when there is a foreign object on the touch screen or when the human touches), so the method introduces the backup reference capacitance value, the temporary reference capacitance value and the detection capacitance value when the touch screen is powered on, wherein the backup reference capacitance value is the touch screen under certain circumstances.
- an external environment such as temperature, humidity, etc.
- the reference capacitance value when there is no interference is the reference capacitance value detected under the environment and the interference condition when the touch screen is powered on at this time, and the detection capacitance value is detected at each detection time of the touch screen after power-on. The value of the capacitance obtained.
- the touch device when the touch device is powered on, the touch device first obtains a temporary reference capacitance value of the touch detection point of the capacitive touch screen, and then obtains the touch detection point backup reference capacitance value and the touch detection point temporarily.
- the first difference of the difference between the reference capacitance values if the first difference is less than the preset first threshold, indicating that the environment in which the touch screen is powered on is close to the environment in which the backup reference capacitance value is measured, and It can be considered that the touch screen is not interfered when it is powered on, and the temporary reference capacitance value can be used as the reference capacitance value of the touch screen.
- the first difference is greater than the preset first threshold, it indicates that the environment in which the touch screen is powered on differs greatly from the environment in which the backup reference capacitance value is measured or when the touch screen is powered on. Then, a second difference between the detected capacitance value of the touch detection point and the difference between the detected capacitance value of the touch detection point and the temporary reference capacitance value of the touch detection point is obtained. If the second difference is less than the preset second threshold, it indicates that the environment in which the touch screen is powered on is different from the environment in which the backup reference capacitance value is measured. At this time, the reference capacitance of the touch screen is determined to be a temporary reference capacitance. value.
- the second difference is greater than the preset second threshold, obtaining a third difference between the second difference and the first difference, if the third difference is less than a preset
- the third threshold indicates that the environment in which the touch screen is powered on is not much different from the environment in which the backup reference capacitance value is measured. However, when the touch screen is powered on, the backup reference capacitance value is determined as The reference capacitance value of the touch screen.
- the third difference is greater than the preset third threshold, indicating that the touch screen is powered on
- the environment is different from the environment for measuring the backup reference capacitance value, and if the power is disturbed during power-on, the reference capacitance value is updated to the detection capacitance value.
- the calibration method of the capacitive touch screen takes into account environmental changes and interference, the calibration method can accurately calibrate the reference capacitance value of the touch screen, thereby preventing the operation of the touch screen from failing.
- the embodiment of the present invention further provides a capacitive touch device 30.
- the capacitive touch screen device 30 includes a capacitive touch screen 31.
- the touch device 30 further includes a processor 32.
- the processor 32 is configured to obtain, when the capacitive touch screen 31 is powered on, a temporary reference capacitance value of a touch detection point of the capacitive touch screen 31, and a backup reference capacitance value of the touch detection point and the The first difference in the difference between the temporary reference capacitance values of the touch detection points.
- the temporary reference capacitance value of the touch detection point is a sampling capacitance value of the touch detection point acquired by the capacitive touch device 30 each time the capacitive touch screen 31 is powered on. For example, when the mobile phone with the capacitive touch screen is just turned on, the mobile phone will use the sampling capacitance value of the touch detection point as the temporary reference capacitance value of the touch detection point of the capacitive touch screen.
- the backup reference capacitance value is a reference capacitance value when the touch screen is in an environment without interference.
- the backup reference capacitance value may be a capacitance value set by the touch screen at the factory. Of course, it can also be the reference capacitance value after calibration by this method.
- the processor 32 is further configured to determine a reference capacitance value of the touch detection point according to the first difference value and a preset first threshold value.
- the reference capacitance value is a capacitance value used when the capacitive touch device 30 detects whether there is a touch operation. Specifically, when the capacitive touch device 30 detects whether there is a touch operation, it is determined by comparing the detected capacitance value with the reference capacitance value.
- Determining, by the processor 32, the reference capacitance value of the touch detection point according to the first difference value and the preset first threshold value may be: if the first difference value is less than a preset first threshold value, The environment of the touch detection point does not change, and the backup reference capacitance value may be selected as the reference capacitance value, or the temporary reference capacitance value may be selected as the reference capacitance value. If the first difference is greater than the preset first threshold, it may be that the touch point is disturbed or the environment of the touch point changes, and the backup reference capacitance value and the temporary reference capacitance value are used as reference capacitance values. Inaccurate, it may cause misoperation, so that the touch screen can calibrate the reference capacitance value of the touch detection point by other methods.
- the capacitance value of the touch point may be re-acquired, and the re-acquired capacitance value may be used as the reference capacitance value.
- the value is calibrated, which is not specifically limited in the embodiment of the present invention.
- determining, by the processor 32, the reference capacitance value of the touch detection point according to the first difference value and the preset first threshold value specifically includes:
- the backup reference capacitance value is used as the reference capacitance value
- a reference capacitance value of the touch detection point Determining a reference capacitance value of the touch detection point according to the second difference value and a preset second threshold value. If the first difference is less than the preset first threshold, the environmental condition when the temporary reference capacitance value of the touch detection point is acquired is close to the environmental condition when the backup reference capacitance value is detected, considering the temporary The reference capacitance value is actually obtained from the detected value at that time, which is closer to the actual situation, and can also make the touch effect better. At this time, the temporary reference capacitance value is used as the reference capacitance value.
- the processor 32 needs to further acquire the current detection capacitance value of the touch detection point.
- determining, by the processor 32, the reference capacitance value of the touch detection point according to the second difference value and the preset second threshold value specifically includes:
- a reference capacitance value of the touch detection point Determining a reference capacitance value of the touch detection point according to the third difference value and a preset third threshold value. If the second difference is less than the preset second threshold, the current environmental condition of the touch detection point is close to the environmental condition when the temporary reference capacitance value is detected, but the backup reference capacitance value is detected.
- the environmental conditions have changed compared to the time. For example, the temperature and humidity of the environment in which the capacitive touch screen 31 is located has changed. At this time, the processor 32 uses the temporary reference capacitance value as the reference capacitance value.
- the processor 32 needs to further acquire a third difference between the second difference and the first difference.
- determining, by the processor, the reference capacitance value of the touch detection point according to the third difference value and the preset third threshold value specifically includes:
- the processor 32 uses the backup reference capacitance value as the reference capacitance value.
- the third difference is greater than the preset third threshold, it is indicated that not only the touch detection point is interfered when acquiring the temporary reference capacitance value, but also the current environmental condition of the touch detection point is The environmental condition when the backup reference capacitance value is detected is also changed. For example, when the capacitive touch screen 31 encounters a change in temperature and humidity, the hand is pressed against a large area, and the temporary reference capacitance value is used. And the backup reference capacitance value cannot be used as the reference capacitance value, but the detection capacitance value is used as the reference capacitance value.
- the processor 32 is further configured to update the backup reference capacitance value to the temporary reference capacitance value if the second difference is less than a preset second threshold.
- the processor 32 may update the backup reference capacitance value to the temporary reference capacitance value, so that the next time the power is turned on, if the touch screen 31 Without being disturbed, and close to the environment at the time of the last power-on, the capacitive touch device 30 can update the reference capacitance value only by judging the first threshold.
- the processor 32 is further configured to update the backup reference capacitance value to the detected capacitance value if the third difference is greater than the preset third threshold.
- the processor 32 is further configured to:
- an embodiment of the present invention provides a capacitive touch device including a capacitive touch screen and a processor.
- the reference capacitance value of the capacitive touch screen may be subjected to an external environment (such as temperature, humidity, etc.).
- the effect of the touch detection may also be temporarily obtained by the processor when the capacitive touch screen is powered on, so that the processor first obtains the temporary touch detection point of the capacitive touch screen.
- the environment in which the touch screen is powered on is in close proximity to the environment in which the backup reference capacitance value is measured, and the touch screen can be considered to be uninterrupted when the power is turned on.
- the temporary reference capacitance value can be used as the reference capacitance value of the touch screen.
- the first difference is greater than the preset first threshold, it indicates that the environment in which the touch screen is powered on differs greatly from the environment in which the backup reference capacitance value is measured or when the touch screen is powered on. Then, a second difference between the detected capacitance value of the touch detection point and the difference between the detected capacitance value of the touch detection point and the temporary reference capacitance value of the touch detection point is obtained. If the second difference is less than the preset second threshold, it indicates that the environment in which the touch screen is powered on is different from the environment in which the backup reference capacitance value is measured. At this time, the reference capacitance of the touch screen is determined to be a temporary reference capacitance. value.
- the second difference is greater than the preset second threshold, obtaining a third difference between the second difference and the first difference, if the third difference is less than a preset
- the third threshold indicates that the environment in which the touch screen is powered on is not much different from the environment in which the backup reference capacitance value is measured. However, when the touch screen is powered on, the backup reference capacitance value is determined as The reference capacitance value of the touch screen.
- the third difference is greater than the preset third threshold, it indicates that the environment where the touch screen is powered on is different from the environment for measuring the backup reference capacitance value, and the power is disturbed when the power is turned on.
- the reference capacitance value is updated to the detected capacitance value. Since the capacitive touch device takes into account environmental changes and interference, the capacitive touch device is capable of accurately calibrating the reference capacitance value of the touch screen, thereby preventing operation of the touch screen from failing.
- the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
- User Interface Of Digital Computer (AREA)
Abstract
本发明实施例提供了一种电容式触摸屏的校准方法和电容式触摸装置,该校准方法能够准确校准所述电容式触摸屏的基准电容值,进而防止对电容式触摸屏的操作失效。该方法包括:所述电容式触摸屏上电时,获得所述电容式触摸屏的触摸检测点的临时基准电容值;获得所述触摸检测点备份基准电容值与所述触摸检测点临时基准电容值之差的第一差值;根据所述第一差值和预设的第一阈值确定所述触摸检测点的基准电容值。本发明实施例适用于触摸屏检测领域。
Description
一种电容式触摸屏的校准方法和电容式触摸装置 本申请要求于 2012年 08月 30日提交中国专利局、 申请号为 201210315508. 1、 发 明名称为 "一种电容式触摸屏的校准方法和电容式触摸装置" 的中国专利申请的优 先权, 其全部内容通过引用结合在本申请中。 技术领域 本发明涉及触摸屏检测技术领域, 尤其涉及一种电容式触摸屏的校准方法和 电容式触摸装置。 背景技术 随着科学技术的发展, 触摸屏已经逐渐取代机械式按钮面板成为电子设备 领域新的人机交互手段。在各种类型的触摸屏中, 电容式触摸屏由于其透光率、 清晰度和可靠性更好, 而被应用于越来越多的电子设备中。
电容式触摸屏是基于触摸屏上的电容变化来判断是否有触摸操作。 所以电 容式触摸屏在上电时, 首先要获取电容式触摸屏上无干扰时的基准电容值, 据 此基准电容值作参考来检测触摸屏上的电容变化, 以此来判断触摸屏上是否有 触摸操作。
现有技术中, 记载了以下两种基准电容值的校准方法:
1 )对于在获取基准电容值时触摸屏上有异物 (如水渍) 的情况, 一旦异物 被去除后, 触摸屏的电容会产生变化。 此时触摸屏检测到该电容变化值持续的 时间超过一定时间后, 该触摸屏会强制更新该基准电容值。 但是, 采用该校准 方法会使得人手故意长时间按压时也更新基准电容值, 从而造成误校准, 且可 能导致正常触摸操作失效。
2 ) 对于在获取基准电容值时触摸屏上有大面积按压 (如人手按压) 的情况, 一旦人手撤走后, 触摸屏检测的电容变化值会出现多个正负值, 在该正负值比例 达到一定的阈值时, 触摸屏会对基准电容值进行校准。 但是, 该校准方法中, 首 先正负值的比例很难准确定义, 且可能由于触摸屏周围存在导体或充电设备, 会 对触摸屏的电容值产生影响, 所以该校准方法不稳定, 会造成误校准。 发明内容
本发明实施例提供了一种电容式触摸屏的校准方法和电容式触摸装置, 能 够对电容式触摸屏进行校准, 且避免电容式触摸屏校准错误, 进而防止对电容 式触摸屏操作失效。
为达到上述目的, 本发明的实施例采用如下技术方案:
第一方面, 提供了一种电容式触摸屏的校准方法, 该方法包括:
在所述电容式触摸屏上电时, 获得所述触摸检测点的临时基准电容值; 获得所述触摸检测点的备份基准电容值与所述触摸检测点的临时基准电容 值之差的第一差值;
根据所述第一差值和预设的第一阈值确定所述触摸检测点的基准电容值。 在第一种可能的实现方式中, 结合第一方面, 根据所述第一差值和预设的 第一阈值确定所述触摸检测点的基准电容值具体包括:
若所述第一差值小于预设的第一阈值, 将所述临时基准电容值作为所述基 准电容值;
若所述第一差值大于所述预设的第一阈值, 获得所述触摸检测点的当时的 检测电容值;
获得所述触摸检测点的检测电容值与所述触摸检测点的临时基准电容值之 差的第二差值;
根据所述第二差值和预设的第二阈值确定所述触摸检测点的基准电容值。 在第二种可能的实现方式中, 结合第一种可能的实现方式, 根据所述第二 差值和预设的第二阈值确定所述触摸检测点的基准电容值具体包括:
若所述第二差值小于预设的第二阈值, 将所述触摸检测点的基准电容值更 新为所述临时基准电容值;
若所述第二差值大于所述预设的第二阈值, 获得所述第二差值与所述第一 差值之差的第三差值;
根据所述第三差值和预设的第三阈值确定所述触摸检测点的基准电容值。 在第三种可能的实现方式中, 结合二种可能的实现方式, 根据所述第三差 值和预设的第三阈值确定所述触摸检测点的基准电容值具体包括:
若所述第三差值小于预设的第三阈值, 将所述触摸检测点的基准电容值更 新为所述备份基准电容值;
若所述第三差值大于所述预设的第三阈值, 将所述触摸检测点的基准电容 值更新为所述检测电容值。
在第四种可能的实现方式中, 结合第三种可能的实现方式, 该方法还包括:
若所述第二差值小于所述预设的第二阈值, 还将所述备份基准电容值更新 为所述临时基准电容值;
若所述第三差值大于所述预设的第三阈值, 还将所述备份基准电容值更新 为所述检测电容值。
在第五种可能的实现方式中, 结合第三种可能的实现方式或第四种可能的 实现方式, 该方法还包括:
若所述第二差值小于所述预设的第二阈值, 将所述触摸屏的其它触摸检测 点的基准电容值更新为所述的临时基准电容值;
若所述第三差值小于所述预设的第三阈值, 将所述触摸屏的其它触摸检测 点的基准电容值更新为所述备份基准电容值;
若所述第三差值大于所述预设的第三阈值, 将所述触摸屏的其它触摸检测 点的基准电容值更新为所述检测电容值。
第二方面, 提供了一种电容式触摸装置, 所述电容式触摸装置包括电容式 触摸屏, 该电容式触摸装置还包括: 处理器;
所述处理器, 用于在所述电容式触摸屏上电时, 获得所述触摸检测点的临 时基准电容值, 以及所述触摸检测点备份基准电容值与所述触摸检测点的临时 基准电容值之差的第一差值;
所述处理器, 还用于根据所述第一差值和预设的第一阈值确定所述触摸检 测点的基准电容值。
在第一种可能的实现方式中, 结合第二方面, 所述处理器根据所述第一差 值和预设的第一阈值确定所述触摸检测点的基准电容值具体包括:
若所述第一差值小于预设的第一阈值, 所述处理器将所述临时基准电容值 作为所述基准电容值;
若所述第一差值大于所述预设的第一阈值, 所述处理器获得所述触摸检测 点的检测电容值;
获得所述触摸检测点的检测电容值与所述触摸检测点的临时基准电容值之 差的第二差值;
根据所述第二差值和预设的第二阈值确定所述触摸检测点的基准电容值。 在第二种可能的实现方式中, 结合第一种可能的实现方式, 所述处理器根 据所述第二差值和预设的第二阈值确定所述触摸检测点的基准电容值具体包 括:
若所述第二差值小于预设的第二阈值, 所述处理器将所述触摸检测点的基
准电容值更新为所述临时基准电容值;
若所述第二差值大于所述预设的第二阈值, 所述处理器获得所述第二差值 与所述第一差值之差的第三差值;
根据所述第三差值和预设的第三阈值确定所述触摸检测点的基准电容值。 在第三种可能的实现方式中, 结合第二种可能的实现方式, 所述处理器根 据所述第三差值和预设的第三阈值确定所述触摸检测点的基准电容值具体包 括:
若所述第三差值小于预设的第三阈值, 将所述触摸检测点的基准电容值更 新为所述备份基准电容值;
若所述第三差值大于预设的第三阈值, 所述处理器将所述触摸检测点的基 准电容值更新为所述检测电容值。
在第四种可能的实现方式中, 结合第三种可能的实现方式, 所述处理器还 用于:
若所述第二差值小于所述预设的第二阈值, 所述处理器还将所述备份基准 电容值更新为所述临时基准电容值;
若所述第三差值大于所述预设的第三阈值, 所述处理器还将所述备份基准 电容值更新为所述检测电容值。
在第五种可能的实现方式中, 结合三种可能的实现方式或第四种可能的实 现方式, 所述处理器还用于:
若所述第二差值小于所述预设的第二阈值, 所述处理器将所述触摸屏的其 它触摸检测点的基准电容值更新为所述的临时基准电容值;
若所述第三差值小于所述预设的第三阈值, 所述处理器将所述触摸屏的其 它触摸检测点的基准电容值更新为所述备份基准电容值;
若所述第三差值大于所述预设的第三阈值, 所述处理器将所述触摸屏的其 它触摸检测点的基准电容值更新为所述检测电容值。
基于上述技术方案的描述, 本发明实施例提供了一种电容式触摸屏的校准 方法和触摸装置, 由于电容式触摸屏的基准电容值可能会受到外界环境 (如温 度、 湿度等) 的影响, 还有可能受到外界干扰 (如触摸屏上有异物或人手触摸 时) , 所以该方法根据该触摸屏的触摸点的备份基准电容值和触摸屏上电时的 临时基准电容值之差的第一差值, 来确定所述触摸检测点的基准电容值, 其中 备份基准电容值为该触摸屏在某一环境下, 无干扰时的基准电容值, 临时基准 电容值为该触摸屏本次上电时所处的环境及干扰状况下检测的基准电容值。
这样首先该触摸装置在所述电容式触摸屏上电时, 首先获得所述电容式触 摸屏的触摸检测点的临时基准电容值, 然后获得所述触摸检测点备份基准电容 值与所述触摸检测点临时基准电容值之差的第一差值, 若所述第一差值小于预 设的第一阈值, 则说明所述触摸屏上电时所处的环境与测量备份基准电容值的 环境很接近, 且可以认为所述触摸屏上电时没有受到干扰, 可以将所述临时基 准电容值作为所述触摸屏的基准电容值。
而当第一差值大于所述预设的第一阈值, 则说明所述触摸屏上电时所处的环 境与测量备份基准电容值的环境相差很大或所述触摸屏上电时受到干扰。 那么该 触摸装置还需要进一步对该触摸点进行校准。 由于所述电容式触摸屏的校准方法 和触摸装置考虑了备份基准电容值, 使得所述触摸屏的校准有了参考, 使得该校 准方法能够更精细的对所述触摸屏的基准电容值进行校准, 而不是在触摸屏上电 时对该触摸屏的电容值直接进行检测校准, 进而防止对触摸屏的操作失效。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实施例或现 有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅 是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的前提 下, 还可以根据这些附图获得其他的附图。
图 1为本发明实施例提供的一种电容式触摸屏的校准方法流程示意图; 图 2为本发明实施例提供的另一种电容式触摸屏的校准方法流程示意图; 图 3为本发明实施例提供的一种触摸装置的结构示意图。 具体实施方式 下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完 整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做出创造性劳动前提下所获得的 所有其他实施例, 都属于本发明保护的范围。
实施例一、
本发明实施例提供了一种电容式触摸屏的校准方法, 具体如图 1所示, 该 方法包括:
101、所述电容式触摸屏上电时, 所述电容式触摸装置获得所述电容式触摸 屏的触摸检测点的临时基准电容值。
其中, 所述临时基准电容值为每次电容式触摸屏上电时, 所述电容式触摸 装置所获取的触摸检测点的采样电容值。 例如, 当具有电容式触摸屏的手机刚 开机时, 手机会将此刻触摸检测点的采样电容值作为所述电容式触摸屏的触摸 检测点的临时基准电容值。
102、所述电容式触摸装置获得所述触摸检测点的备份基准电容值与所述触 摸检测点的临时基准电容值之差的第一差值。
所述触摸检测点的备份基准电容值为该触摸屏在某一环境下, 无干扰时的 基准电容值。
具体的, 该备份基准电容值可以是该触摸屏在出厂时设置的电容值。 当然 也可以是通过该方法校准后的基准电容值。
103、根据所述第一差值和预设的第一阈值确定所述触摸检测点的基准电容 值。
所述基准电容值为所述电容式触摸装置检测是否有触摸操作时, 使用的电 容值。 具体的, 所述电容式触摸装置检测是否有触摸操作时, 是将检测到的电 容值与此基准电容值进行比较来判断。
根据所述第一差值和预设的第一阈值确定所述触摸检测点的基准电容值具 体可以是: 若所述第一差值小于预设的第一阈值, 说明所述触摸检测点的环境 没有发生变化, 可以选择将所述备份基准电容值作为基准电容值, 也可以选择 将所述临时基准电容值作为基准电容值。若所述第一差值大于预设的第一阈值, 说明可能所述触摸点受到了干扰或所述触摸点的环境发生了变化, 该备份基准 电容值和临时基准电容值作为基准电容值都不准确, 会造成误操作, 这样所述 触摸屏可以采用其它方法对该触摸检测点的基准电容值进行校准。 具体的, 可 以在预设的时间结束后, 可以重新获取所述触摸点的电容值, 将重新获取的电 容值可以作为基准电容值。 当然, 还可以采用其它方式对触摸点的电容值进行 校准, 本发明实施例对此不作具体限定。
基于上述技术方案的描述, 本发明实施例提供了一种电容式触摸屏的校准 方法, 由于电容式触摸屏的基准电容值可能会受到外界环境 (如温度、 湿度等) 的影响, 还有可能受到外界干扰 (如触摸屏上有异物或人手触摸时) , 所以该 方法根据该触摸屏的触摸点的备份基准电容值和触摸屏上电时的临时基准电容 值之差的第一差值, 来确定所述触摸检测点的基准电容值, 其中备份基准电容
值为该触摸屏在某一环境下, 无干扰时的基准电容值, 临时基准电容值为该触 摸屏本次上电时所处的环境及干扰状况下检测的基准电容值。
这样首先该触摸装置在所述电容式触摸屏上电时, 首先获得所述电容式触 摸屏的触摸检测点的临时基准电容值, 然后获得所述触摸检测点备份基准电容 值与所述触摸检测点临时基准电容值之差的第一差值, 若所述第一差值小于预 设的第一阈值, 则说明所述触摸屏上电时所处的环境与测量备份基准电容值的 环境很接近, 且可以认为所述触摸屏上电时没有受到干扰, 可以将所述临时基 准电容值作为所述触摸屏的基准电容值。
而当第一差值大于所述预设的第一阈值, 则说明所述触摸屏上电时所处的 环境与测量备份基准电容值的环境相差很大或所述触摸屏上电时受到干扰。 那 么该触摸装置还需要进一步对该触摸点进行校准。 由于所述电容式触摸屏的校 准方法考虑了备份基准电容值, 使得所述触摸屏的校准有了参考, 使得该校准 方法能够更精细的对所述触摸屏的基准电容值进行校准, 而不是在触摸屏上电 时对该触摸屏的电容值直接进行检测校准, 进而防止对触摸屏的操作失效。
实施例二、
本发明实施例提供了一种电容式触摸屏的校准方法, 具体如图 2所示, 该 方法包括:
201、所述电容式触摸屏上电时, 所述电容式触摸装置获得所述电容式触摸 屏的触摸检测点的临时基准电容值。
其中, 所述临时基准电容值为每次电容式触摸屏上电时, 所述电容式触摸 装置所获取的触摸检测点的采样电容值。 例如, 当具有电容式触摸屏的手机刚 开机时, 手机会将此刻触摸检测点的采样电容值作为所述电容式触摸屏的触摸 检测点的临时基准电容值。
202、所述电容式触摸装置获得所述触摸检测点的备份基准电容值与所述触 摸检测点的临时基准电容值之差的第一差值。
所述触摸检测点的备份基准电容值为该触摸屏在某一环境下, 无干扰时的 基准电容值。
具体的, 该备份基准电容值可以是该触摸屏在出厂时设置的电容值。 当然 也可以是通过该方法校准后的基准电容值。
所述基准电容值为所述电容式触摸装置检测是否有触摸操作时, 使用的电 容值。 具体的, 所述电容式触摸装置检测是否有触摸操作时, 是将检测到的电 容值与此基准电容值进行比较来判断。
假设所述电容式触摸屏的触摸检测点的备份基准电容值为 a, 临时基准电 容值为 b, 第一差值为 1, 则 l=a_b。
203、若所述第一差值小于预设的第一阈值, 所述电容式触摸装置将所述临 时基准电容值作为所述基准电容值。
假设预设的第一阈值为 o, 基准电容值为 c, 则当 1 < ο时, 说明获取所述 触摸检测点的临时基准电容值时的环境状况与检测所述备份基准电容值时的环 境状况接近, 考虑到临时基准实际是由当时的检测值获得的, 它更接近实际情 况, 也可使触摸效果更好, 此时所述备份将所述临时基准电容值可以作为所述 基准电容值, 即基准电容值 c=b。
204、若所述第一差值大于预设的第一阈值, 所述电容式触摸装置获得所述 触摸检测点的检测电容值。
当 1 > ο时,说明获取所述触摸检测点的临时基准电容值时的环境状况与检 测备份基准电容值时的环境状况相比发生了变化,和 /或所述触摸检测点受到了 干扰。 例如, 所述电容式触摸屏所在环境的温湿度发生变化、 该触摸检测点有 水渍等干扰等。
为了获得准确的基准电容值, 此时该电容式触摸装置还需要进一步的获取 所述触摸检测点当前的检测电容值。
205、所述电容式触摸装置获得所述触摸检测点的检测电容值与所述触摸检 测点的临时基准电容值之差的第二差值。
假设所述触摸检测点的检测电容值为 d, 第二差值为 m, 则! ii= d -b 。
206、若所述第二差值小于预设的第二阈值, 所述电容式触摸装置将所述触 摸检测点的基准电容值更新为所述临时基准电容值。
假设所述预设的第二阈值为 P, 当 m< p时, 说明所述触摸检测点当前的环 境状况与检测所述临时基准电容值时的环境状况接近, 但与检测所述备份基准 电容值时的环境状况相比发生了变化。 如, 所述电容式触摸屏所在环境的温湿 度发生了变化。 此时该电容式触摸装置将所述临时基准电容值作为所述基准电 容值, 即 c=b。
207、若所述第二差值大于所述预设的第二阈值, 所述电容式触摸装置获得 所述第二差值与所述第一差值之差的第三差值。
若所述第二差值大于所述预设的第二阈值, 说明所述触摸检测点当前的环 境状况与检测所述临时基准电容值时的环境状况相比可能发生了变化, 也可能 是所述触摸检测点受到了干扰, 从而导致所述检测电容值与所述临时基准电容
值的差值较大。
为了获得准确的基准电容值, 此时该触摸装置还需要进一步的获取所述第 二差值与所述第一差值之差的第三差值。
假设第三差值为 n, 当 m> p, 获得 n= m -1 = ( d _b ) - ( a_b ) =d_a。 208、若所述第三差值小于预设的第三阈值, 所述电容式触摸装置将所述触 摸检测点的基准电容值更新为所述备份基准电容值。
假设第三阈值为 q, 当 n < q, 也即 d_a< q时, 说明所述触摸检测点当前的 环境状况又与检测所述备份基准电容值时的环境状况接近, 这样可确定所述触 摸检测点在检测所述临时基准电容值时受到了干扰。
此时该电容式触摸装置将所述备份基准电容值作为所述基准电容值, 即 c=a D
209、若所述第三差值大于所述预设的第三阈值, 所述电容式触摸装置将所 述触摸检测点的基准电容值更新为所述检测电容值。
当 n > q, 也即 d-a> q 时, 说明不仅仅是所述触摸检测点在获取所述临时 基准电容值时受到了干扰, 同时所述触摸检测点当前的环境状况与检测所述备 份基准电容值时的环境状况相比也发生了变化, 例如当所述触摸屏遭遇温湿度 变化, 同时手大面积按压上电的情况, 此时所述临时基准电容值与所述备份基 准电容值均不能作为所述基准电容值, 而是将所述检测电容值作为所述触摸检 测点的基准电容值, 即 c=d。
可选的, 若所述第二差值小于预设的第二阈值, 即当 m< p时, 说明所述触 摸检测点当前的环境状况与检测所述备份基准电容值时的环境状况相比发生了 变化。 通常情况下, 该触摸屏所处的环境状况在一段时间内变化不是很大, 但 出厂时检测该备份基准电容值的环境状况与所述电容式触摸屏当前的环境状况 可能变化较大, 这样为了简化该电容式触摸装置的校准基准电容值的过程, 若 所述第二差值小于预设的第二阈值, 还可以将所述备份基准电容值更新为所述 临时基准电容值, 即 a=b, 这样在下次开机时, 若该触摸屏没有受到干扰, 且 与上次上电时的环境状况接近, 该电容式触摸装置仅通过对所述第一阈值的判 断就可以更新所述基准电容值。
同样, 为了简化下次的校准过程, 若所述第三差值大于所述预设的第三阈 值, 可以将所述备份基准电容值更新为所述检测电容值。
可选的, 当所述触摸装置所在的环境发生变化, 和 /或所述触摸装置受到外 界干扰时, 对所述触摸检测点进行校准后, 也可以将其它触摸检测点的基准电
容值也更新为触摸检测点校准后的基准电容值, 具体过程为: 若所述第二差值小于所述预设的第二阈值, 将所述触摸屏的其它触摸检测 点的基准电容值更新为所述的临时基准电容值;
若所述第三差值小于所述预设的第三阈值, 将所述触摸屏的其它触摸检测 点的基准电容值更新为所述备份基准电容值;
若所述第三差值大于所述预设的第三阈值, 将所述触摸屏的其它触摸检测 点的基准电容值更新为所述检测电容值。
基于上述技术方案的描述, 本发明实施例提供了一种电容式触摸屏的校准 方法, 由于电容式触摸屏的基准电容值可能会受到外界环境 (如温度、 湿度等) 的影响, 还有可能受到外界干扰 (如触摸屏上有异物或人手触摸时) , 所以该 方法引入了备份基准电容值、 触摸屏上电时的临时基准电容值和检测电容值, 其中备份基准电容值为该触摸屏在某一环境下, 无干扰时的基准电容值, 临时 基准电容值为该触摸屏本次上电时所处的环境及干扰状况下检测的基准电容 值, 检测电容值是该触摸屏在上电后的各检测时刻检测获得的电容值。
这样首先该触摸装置在所述电容式触摸屏上电时, 首先获得所述电容式触 摸屏的触摸检测点的临时基准电容值, 然后获得所述触摸检测点备份基准电容 值与所述触摸检测点临时基准电容值之差的第一差值, 若所述第一差值小于预 设的第一阈值, 则说明所述触摸屏上电时所处的环境与测量备份基准电容值的 环境很接近, 且可以认为所述触摸屏上电时没有受到干扰, 可以将所述临时基 准电容值作为所述触摸屏的基准电容值。
而当第一差值大于所述预设的第一阈值, 则说明所述触摸屏上电时所处的 环境与测量备份基准电容值的环境相差很大或所述触摸屏上电时受到干扰。 然 后获得所述触摸检测点的检测电容值及所述触摸检测点的检测电容值与所述触 摸检测点的临时基准电容值之差的第二差值。 若所述第二差值小于预设的第二 阈值, 则说明该触摸屏上电时所处的环境与测量备份基准电容值的环境不同, 此时确定所述触摸屏的基准电容值为临时基准电容值。
反之若该第二差值大于所述预设的第二阈值, 获得所述第二差值与所述第 一差值之差的第三差值, 若所述第三差值小于预设的第三阈值, 则说明所述触 摸屏上电后所处的环境又与测量备份基准电容值的环境相差不大, 但所述触摸 屏上电时受到了干扰, 则将所述备份基准电容值确定为所述触摸屏的基准电容 值。
若所述第三差值大于所述预设的第三阈值, 则说明所述触摸屏上电后所处
的环境与测量备份基准电容值的环境相差较大, 且上电时受到了干扰, 则将所 述基准电容值更新为所述检测电容值。
由于所述电容式触摸屏的校准方法考虑了环境变化和干扰的情况, 所以该 校准方法能够准确校准所述触摸屏的基准电容值, 进而防止对触摸屏的操作失 效。
实施例三、
本发明实施例还提供了一种电容式触摸装置 30,所述电容式触摸屏装置 30 包括电容式触摸屏 31, 具体如图 3所示, 该触摸装置 30还包括处理器 32。
所述处理器 32, 用于在所述电容式触摸屏 31 上电时, 获得所述电容式触 摸屏 31的触摸检测点的临时基准电容值, 以及所述触摸检测点的备份基准电容 值与所述触摸检测点的临时基准电容值之差的第一差值。
其中, 所述触摸检测点的临时基准电容值为每次电容式触摸屏 31上电时, 所述电容式触摸装置 30所获取的触摸检测点的采样电容值。例如, 当具有电容 式触摸屏的手机刚开机时, 手机会将此刻触摸检测点的采样电容值作为所述电 容式触摸屏的触摸检测点的临时基准电容值。
所述备份基准电容值为该触摸屏在某一环境下, 无干扰时的基准电容值。 具体的, 该备份基准电容值可以是该触摸屏在出厂时设置的电容值。 当然也可 以是通过该方法校准后的基准电容值。
所述处理器 32, 还用于根据所述第一差值和预设的第一阈值确定所述触摸 检测点的基准电容值。
其中, 所述基准电容值为所述电容式触摸装置 30检测是否有触摸操作时, 使用的电容值。 具体的, 所述电容式触摸装置 30检测是否有触摸操作时, 是将 检测到的电容值与此基准电容值进行比较来判断。
所述处理器 32 根据所述第一差值和预设的第一阈值确定所述触摸检测点 的基准电容值可以是: 若所述第一差值小于预设的第一阈值, 说明所述触摸检 测点的环境没有发生变化, 可以选择将所述备份基准电容值作为基准电容值, 也可以选择将所述临时基准电容值作为基准电容值。 若所述第一差值大于预设 的第一阈值,说明可能所述触摸点受到了干扰或所述触摸点的环境发生了变化, 该备份基准电容值和临时基准电容值作为基准电容值都不准确,会造成误操作, 这样所述触摸屏可以采用其它方法对该触摸检测点的基准电容值进行校准。 具 体的, 可以在预设的时间结束后, 可以重新获取所述触摸点的电容值, 将重新 获取的电容值可以作为基准电容值。 当然, 还可以采用其它方式对触摸点的电
容值进行校准, 本发明实施例对此不作具体限定。
可选的,所述处理器 32根据所述第一差值和预设的第一阈值确定所述触摸 检测点的基准电容值具体包括:
若所述第一差值小于预设的第一阈值, 将所述备份基准电容值作为所述基 准电容值;
若所述第一差值大于所述预设的第一阈值, 获得所述触摸检测点的检测电 容值;
获得所述触摸检测点的检测电容值与所述触摸检测点的临时基准电容值之 差的第二差值;
根据所述第二差值和预设的第二阈值确定所述触摸检测点的基准电容值。 若所述第一差值小于预设的第一阈值, 说明获取所述触摸检测点的临时基 准电容值时的环境状况与检测所述备份基准电容值时的环境状况接近, 考虑到 所述临时基准电容值实际是由当时的检测值获得的, 它更接近实际情况, 也可 使触摸效果更好, 此时将所述临时基准电容值作为所述基准电容值。
若所述第一差值大于预设的第一阈值, 说明获取所述临时基准电容值时的 环境状况与检测备份基准电容值时的环境状况相比发生了变化,和 /或所述触摸 检测点受到了干扰。 例如, 所述电容式触摸屏 31所在环境的温湿度发生变化、 该触摸检测点有水渍等干扰等。 为了获得准确的基准电容值, 此时所述处理器 32还需要进一步的获取所述触摸检测点当前的检测电容值。
可选的,所述处理器 32根据所述第二差值和预设的第二阈值确定所述触摸 检测点的基准电容值具体包括:
若所述第二差值小于预设的第二阈值, 将所述触摸检测点的基准电容值更 新为所述临时基准电容值;
若所述第二差值大于所述预设的第二阈值, 获得所述第二差值与所述第一 差值之差的第三差值;
根据所述第三差值和预设的第三阈值确定所述触摸检测点的基准电容值。 若所述第二差值小于预设的所述第二阈值, 说明所述触摸检测点当前的环 境状况与检测所述临时基准电容值时的环境状况接近, 但与检测所述备份基准 电容值时的环境状况相比发生了变化。 如, 所述电容式触摸屏 31所在环境的温 湿度发生了变化。 此时该处理器 32 将所述临时基准电容值作为所述基准电容 值。
若所述第二差值大于所述预设的第二阈值, 说明所述触摸检测点当前的环
境状况与检测所述临时基准电容值时的环境状况相比可能发生了变化, 也可能 是所述触摸检测点受到了干扰, 从而导致所述检测电容值与所述临时基准电容 值的差值较大。 为了获得准确的基准电容值, 此时该处理器 32还需要进一步的 获取所述第二差值与所述第一差值之差的第三差值。
可选的, 所述处理器根据所述第三差值和预设的第三阈值确定所述触摸检 测点的基准电容值具体包括:
若所述第三差值小于预设的第三阈值, 将所述触摸检测点的基准电容值更 新为所述备份基准电容值;
若所述第三差值大于所述预设的第三阈值, 将所述触摸检测点的基准电容 值更新为所述检测电容值。
若所述第三差值小于预设的第三阈值, 说明所述触摸检测点当前的环境状 况又与检测所述备份基准电容值时的环境接近, 这样可确定所述触摸检测点在 检测所述临时基准电容值时受到了干扰。此时该处理器 32将所述备份基准电容 值作为所述基准电容值。
若所述第三差值大于预设的所述第三阈值, 说明不仅仅是所述触摸检测点 在获取所述临时基准电容值时受到了干扰, 同时所述触摸检测点当前的环境状 况与检测所述备份基准电容值时的环境状况相比也发生了变化, 例如当所述电 容式触摸屏 31遭遇温湿度变化的同时, 手大面积按压上电的情况, 此时所述临 时基准电容值与所述备份基准电容值均不能作为所述基准电容值, 而是将所述 检测电容值作为所述基准电容值。
可选的, 所述处理器 32还用于, 若所述第二差值小于预设的第二阈值, 将 所述备份基准电容值更新为所述临时基准电容值。
若所述第二差值小于预设的第二阈值, 说明所述触摸检测点当前的环境状 况与检测所述临时基准电容值时的环境状况接近, 但与检测所述备份基准电容 值时的环境状况相比发生了变化。为了简化该电容式触摸装置 30的校准基准电 容值的过程,此时所述处理器 32可以将所述备份基准电容值更新为所述临时基 准电容值, 这样在下次开机时, 若该触摸屏 31没有受到干扰, 且与上次上电时 的环境接近,该电容式触摸装置 30仅通过对所述第一阈值的判断就可以更新所 述基准电容值。
所述处理器 32, 还用于若所述第三差值大于所述预设的第三阈值, 还将所 述备份基准电容值更新为所述检测电容值。
可选的, 当所述触摸装置 30所在的环境发生变化, 和 /或所述触摸装置 30
受到外界干扰时, 对所述触摸检测点进行校准后, 也可以将其它触摸检测点的 基准电容值也更新为触摸检测点校准后的基准电容值。因此所述处理器 32还用 于:
若所述第二差值小于所述预设的第二阈值,将所述触摸屏 31的其它触摸检 测点的基准电容值更新为所述的临时基准电容值;
若所述第三差值小于所述预设的第三阈值,将所述触摸屏 31的其它触摸检 测点的基准电容值更新为所述备份基准电容值;
若所述第三差值大于所述预设的第三阈值,将所述触摸屏 31的其它触摸检 测点的基准电容值更新为所述检测电容值。
基于上述技术方案的描述, 本发明实施例提供了一种电容式触摸装置, 该 触摸装置包括电容式触摸屏和处理器, 由于电容式触摸屏的基准电容值可能会 受到外界环境 (如温度、 湿度等) 的影响, 还有可能受到外界干扰 (如触摸屏 上有异物或人手触摸时) , 所以所述处理器在所述电容式触摸屏上电时, 首先 获得所述电容式触摸屏的触摸检测点的临时基准电容值, 然后获得所述触摸检 测点备份基准电容值与所述触摸检测点临时基准电容值之差的第一差值, 若所 述第一差值小于预设的第一阈值, 则说明所述触摸屏上电时所处的环境与测量 备份基准电容值的环境很接近, 且可以认为所述触摸屏上电时没有受到干扰, 可以将所述临时基准电容值作为所述触摸屏的基准电容值。
而当第一差值大于所述预设的第一阈值, 则说明所述触摸屏上电时所处的 环境与测量备份基准电容值的环境相差很大或所述触摸屏上电时受到干扰。 然 后获得所述触摸检测点的检测电容值及所述触摸检测点的检测电容值与所述触 摸检测点的临时基准电容值之差的第二差值。 若所述第二差值小于预设的第二 阈值, 则说明该触摸屏上电时所处的环境与测量备份基准电容值的环境不同, 此时确定所述触摸屏的基准电容值为临时基准电容值。
反之若该第二差值大于所述预设的第二阈值, 获得所述第二差值与所述第 一差值之差的第三差值, 若所述第三差值小于预设的第三阈值, 则说明所述触 摸屏上电后所处的环境又与测量备份基准电容值的环境相差不大, 但所述触摸 屏上电时受到了干扰, 则将所述备份基准电容值确定为所述触摸屏的基准电容 值。
若所述第三差值大于所述预设的第三阈值, 则说明所述触摸屏上电后所处 的环境与测量备份基准电容值的环境相差较大, 且上电时受到了干扰, 则将所 述基准电容值更新为所述检测电容值。
由于所述电容式触摸装置考虑了环境变化和干扰的情况, 该电容式触摸装 置能够准确校准所述触摸屏的基准电容值, 进而防止对触摸屏的操作失效。
本领域普通技术人员可以理解: 实现上述方法实施例的全部或部分步骤可以通过 程序指令相关的硬件来完成, 前述的程序可以存储于一计算机可读取存储介质中, 该 程序在执行时, 执行包括上述方法实施例的步骤; 而前述的存储介质包括: R0M、 RAM, 磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易想到变化或 替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护范围应以所述权 利要求的保护范围为准。
Claims
1、 一种电容式触摸屏的校准方法, 其特征在于, 该方法包括:
所述电容式触摸屏上电时, 获得所述电容式触摸屏的触摸检测点的临时基 准电容值;
获得所述触摸检测点备份基准电容值与所述触摸检测点临时基准电容值之 差的第一差值;
根据所述第一差值和预设的第一阈值确定所述触摸检测点的基准电容值。
2、 根据权利要求 1所述的方法, 其特征在于, 根据所述第一差值和预设的 第一阈值确定所述触摸检测点的基准电容值具体包括:
若所述第一差值小于预设的第一阈值, 将所述临时基准电容值作为所述基 准电容值;
若所述第一差值大于预设的第一阈值,获得所述触摸检测点的检测电容值; 获得所述触摸检测点的检测电容值与所述触摸检测点的临时基准电容值之 差的第二差值;
根据所述第二差值和预设的第二阈值确定所述触摸检测点的基准电容值。
3、 根据权利要求 2所述的方法, 其特征在于, 根据所述第二差值和预设的 第二阈值确定所述触摸检测点的基准电容值具体包括:
若所述第二差值小于预设的第二阈值, 将所述触摸检测点的基准电容值更 新为所述临时基准电容值;
若所述第二差值大于所述预设的第二阈值, 获得所述第二差值与所述第一 差值之差的第三差值;
根据所述第三差值和预设的第三阈值确定所述触摸检测点的基准电容值。
4、 根据权利要求 3所述的方法, 其特征在于, 根据所述第三差值和预设的 第三阈值确定所述触摸检测点的基准电容值具体包括:
若所述第三差值小于预设的第三阈值, 将所述触摸检测点的基准电容值更 新为所述备份基准电容值;
若所述第三差值大于所述预设的第三阈值, 将所述触摸检测点的基准电容 值更新为所述检测电容值。
5、 根据权利要求 4所述的方法, 其特征在于, 该方法还包括:
若所述第二差值小于所述预设的第二阈值, 还将所述备份基准电容值更新 为所述临时基准电容值;
若所述第三差值大于所述预设的第三阈值, 还将所述备份基准电容值更新
为所述检测电容值。
6、 根据权利要求 4或 5所述的方法, 其特征在于, 该方法还包括: 若所述第二差值小于预设的第二阈值, 将所述触摸屏的其它触摸检测点的 基准电容值更新为所述的临时基准电容值;
若所述第三差值小于预设的第三阈值, 将所述触摸屏的其它触摸检测点的 基准电容值更新为所述备份基准电容值;
若所述第三差值大于所述预设的第三阈值, 将所述触摸屏的其它触摸检测 点的基准电容值更新为所述检测电容值。
7、 一种电容式触摸装置, 所述触摸装置包括电容式触摸屏, 其特征在于, 所述触摸装置还包括处理器;
所述处理器, 用于在所述电容式触摸屏上电时, 获得所述电容式触摸屏的 触摸检测点的临时基准电容值, 以及所述触摸检测点备份基准电容值与所述触 摸检测点临时基准电容值之差的第一差值;
所述处理器, 还用于根据所述第一差值和预设的第一阈值确定所述触摸检 测点的基准电容值。
8、 根据权利要求 7所述的触摸装置, 其特征在于, 所述处理器根据所述第 一差值和预设的第一阈值确定所述触摸检测点的基准电容值具体包括:
若所述第一差值小于预设的第一阈值, 将所述备份基准电容值作为所述基 准电容值;
若所述第一差值大于所述预设的第一阈值, 获得所述触摸检测点的检测电 容值;
获得所述触摸检测点的检测电容值与所述触摸检测点的临时基准电容值之 差的第二差值;
根据所述第二差值和预设的第二阈值确定所述触摸检测点的基准电容值。
9、 根据权利要求 8所述的触摸装置, 其特征在于, 所述处理器根据所述第 二差值和预设的第二阈值确定所述触摸检测点的基准电容值具体包括:
若所述第二差值小于预设的第二阈值, 将所述触摸检测点的基准电容值更 新为所述临时基准电容值;
若所述第二差值大于所述预设的第二阈值, 获得所述第二差值与所述第一 差值之差的第三差值;
根据所述第三差值和预设的第三阈值确定所述触摸检测点的基准电容值。
10、 根据权利要求 9所述的触摸装置, 其特征在于, 所述处理器根据所述
第三差值和预设的第三阈值确定所述触摸检测点的基准电容值具体包括: 若所述第三差值小于预设的第三阈值, 将所述触摸检测点的基准电容值更 新为所述备份基准电容值;
若所述第三差值大于所述预设的第三阈值, 将所述触摸检测点的基准电容 值更新为所述检测电容值。
11、 根据权利要求 10所述的触摸装置, 其特征在于, 所述处理器还用于, 若所述第二差值小于所述预设的第二阈值, 将所述备份基准电容值更新为 所述临时基准电容值;
若所述第三差值大于所述预设的第三阈值, 还将所述备份基准电容值更新 为所述检测电容值。
12、 根据权利要求 10或 1 1所述的触摸装置, 其特征在于, 所述处理器还 用于,
若所述第二差值小于所述预设的第二阈值, 将所述触摸屏的其它触摸检测 点的基准电容值更新为所述的临时基准电容值;
若所述第三差值小于所述预设的第三阈值, 将所述触摸屏的其它触摸检测 点的基准电容值更新为所述备份基准电容值;
若所述第三差值大于所述预设的第三阈值, 将所述触摸屏的其它触摸检测点 的基准电容值更新为所述检测电容值。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210315508.1A CN103677452B (zh) | 2012-08-30 | 2012-08-30 | 一种电容式触摸屏的校准方法和电容式触摸装置 |
CN201210315508.1 | 2012-08-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014032474A1 true WO2014032474A1 (zh) | 2014-03-06 |
Family
ID=49110998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2013/078557 WO2014032474A1 (zh) | 2012-08-30 | 2013-07-01 | 一种电容式触摸屏的校准方法和电容式触摸装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9529475B2 (zh) |
EP (1) | EP2703965A1 (zh) |
JP (1) | JP5753235B2 (zh) |
CN (1) | CN103677452B (zh) |
WO (1) | WO2014032474A1 (zh) |
Families Citing this family (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101388699B1 (ko) * | 2012-11-22 | 2014-04-24 | 삼성전기주식회사 | 터치 감지 방법 및 터치 감지 장치 |
JP5563698B1 (ja) * | 2013-05-10 | 2014-07-30 | 株式会社東海理化電機製作所 | タッチ式入力装置 |
JP6177026B2 (ja) * | 2013-06-28 | 2017-08-09 | キヤノン株式会社 | タッチパネルの制御装置、タッチパネルの制御方法、及びプログラム |
JP6314570B2 (ja) * | 2014-03-19 | 2018-04-25 | 三菱電機株式会社 | タッチパネル装置 |
CN105302383B (zh) * | 2014-06-23 | 2018-07-31 | 炬芯(珠海)科技有限公司 | 一种电容触摸传感器抗干扰的方法和设备 |
JP6284839B2 (ja) * | 2014-06-26 | 2018-02-28 | 株式会社東海理化電機製作所 | タッチ式入力装置 |
JP6126048B2 (ja) * | 2014-06-26 | 2017-05-10 | 株式会社東海理化電機製作所 | タッチ式入力装置 |
CN104898910B (zh) * | 2015-05-04 | 2018-08-10 | 联想(北京)有限公司 | 一种控制方法及电子设备 |
JP6416691B2 (ja) * | 2015-05-14 | 2018-10-31 | アルプス電気株式会社 | 入力装置及び入力装置の動作方法 |
CN104866140A (zh) * | 2015-05-27 | 2015-08-26 | 小米科技有限责任公司 | 屏幕校准方法及装置 |
CN105119593B (zh) * | 2015-09-22 | 2018-07-17 | 惠州华阳通用电子有限公司 | 一种电容式按键检测方法和装置 |
JP2017068584A (ja) * | 2015-09-30 | 2017-04-06 | トッパン・フォームズ株式会社 | 入力装置 |
US10394393B2 (en) * | 2015-10-09 | 2019-08-27 | Synaptics Incorporated | Compensating force baseline artifacts in a capacitive sensor |
CN105260077B (zh) * | 2015-11-30 | 2019-05-31 | 华勤通讯技术有限公司 | 电子设备及其电容式触摸屏的检测方法 |
CN105511786B (zh) * | 2015-12-03 | 2018-05-22 | 广东欧珀移动通信有限公司 | 触摸屏按键失效的消除方法和*** |
CN106980402B (zh) * | 2016-01-18 | 2022-01-07 | 中兴通讯股份有限公司 | 复位校准的判断方法及装置、终端 |
CN105807998B (zh) * | 2016-03-09 | 2019-01-25 | 周奇 | 电容触摸屏校正方法及装置 |
CN107390907B (zh) * | 2016-05-17 | 2020-06-02 | 北京小米移动软件有限公司 | 触控模组、电子设备及压力校准方法 |
CN106095162B (zh) * | 2016-05-30 | 2019-02-19 | 京东方科技集团股份有限公司 | 电容值自校准装置、方法和触控显示装置 |
CN106054273B (zh) * | 2016-06-01 | 2018-06-01 | 广东小天才科技有限公司 | 一种智能穿戴设备皮肤接触的检测方法及*** |
CN106210108B (zh) * | 2016-07-25 | 2020-04-10 | 深圳Tcl数字技术有限公司 | 调节智能终端响应速度的方法和装置 |
TWI628419B (zh) * | 2016-08-25 | 2018-07-01 | 聯陽半導體股份有限公司 | 液位偵測器及液位偵測方法 |
CN106610755B (zh) * | 2016-11-02 | 2019-09-20 | 广州视源电子科技股份有限公司 | 一种触摸屏校准的方法及装置 |
CN106951132B (zh) * | 2017-02-27 | 2019-08-20 | 合肥京东方光电科技有限公司 | 电容式触摸屏的报点确定方法、装置、触摸屏及终端 |
CN109219792B (zh) * | 2017-03-27 | 2021-11-02 | 深圳市汇顶科技股份有限公司 | 一种消除触控屏lcd干扰的方法及装置 |
CN107422899A (zh) * | 2017-04-25 | 2017-12-01 | 努比亚技术有限公司 | 一种终端和保证触摸屏灵敏度的方法 |
CN107122089B (zh) * | 2017-05-11 | 2020-11-24 | 海信视像科技股份有限公司 | 用于电容式触控产品中的触摸操作判断方法及装置 |
WO2018232695A1 (zh) * | 2017-06-22 | 2018-12-27 | 深圳市汇顶科技股份有限公司 | 触摸屏当前基准值的更新方法、装置、触摸屏及电子终端 |
CN109643200B (zh) * | 2017-07-04 | 2022-07-05 | 深圳市汇顶科技股份有限公司 | 电子设备、触摸检测电路以及触摸屏的基准值的更新方法 |
CN107294522B (zh) * | 2017-07-05 | 2020-09-01 | Oppo广东移动通信有限公司 | 基于触摸按键的响应方法、装置、存储介质及电子设备 |
CN107463289B (zh) * | 2017-07-26 | 2020-07-31 | Oppo广东移动通信有限公司 | 一种触摸屏的校准方法、装置、存储介质及终端 |
CN107425839B (zh) * | 2017-07-28 | 2021-05-25 | 上海科世达-华阳汽车电器有限公司 | 一种含电容传感器的产品的触发测试方法和*** |
WO2019023882A1 (zh) * | 2017-07-31 | 2019-02-07 | 深圳市汇顶科技股份有限公司 | 触摸检测方法、装置、触摸屏及电子终端 |
KR102460507B1 (ko) | 2017-11-03 | 2022-10-28 | 삼성전자 주식회사 | 센서의 측정 값을 보정하는 방법 및 전자 장치 |
CN108845692B (zh) * | 2018-06-01 | 2021-09-24 | Oppo广东移动通信有限公司 | 更换方法和电子装置 |
CN108801321B (zh) * | 2018-06-08 | 2021-08-17 | Oppo(重庆)智能科技有限公司 | 传感器校准方法、电子装置及计算机可读存储介质 |
CN109002230B (zh) * | 2018-10-26 | 2022-03-22 | 广东美的制冷设备有限公司 | 触摸屏校准方法、装置以及电子设备 |
KR102619655B1 (ko) | 2019-04-15 | 2024-01-04 | 삼성전자주식회사 | 조리 기기 및 그 제어 방법 |
CN110703947B (zh) * | 2019-09-30 | 2022-09-02 | Oppo(重庆)智能科技有限公司 | 触摸屏校正方法及装置、电子设备以及存储介质 |
CN111625174B (zh) * | 2020-05-06 | 2022-01-04 | Oppo(重庆)智能科技有限公司 | 触摸屏控制方法及装置、电子设备、存储介质 |
CN111596802B (zh) * | 2020-05-26 | 2022-12-02 | Oppo(重庆)智能科技有限公司 | 一种触摸屏校准方法、装置及计算机可读存储介质 |
CN111831153B (zh) * | 2020-06-04 | 2022-01-18 | 珠海格力电器股份有限公司 | 一种电容触摸屏控制方法、装置及电容触摸屏 |
CN111724575B (zh) * | 2020-07-27 | 2022-07-19 | 九牧厨卫股份有限公司 | 一种电容式溢水检测报警方法 |
CN112346593B (zh) * | 2020-10-15 | 2024-06-11 | 北京小米移动软件有限公司 | 一种触摸屏校准方法及触摸屏校准装置 |
CN112684935B (zh) * | 2020-12-30 | 2024-03-19 | 深圳市康冠商用科技有限公司 | 一种电容触控纠错方法、装置、计算机设备及存储介质 |
CN113031081B (zh) * | 2021-03-10 | 2024-06-04 | 维沃移动通信有限公司 | 接近传感检测电路、电容校准方法、装置及电子设备 |
JP7426455B1 (ja) | 2022-09-30 | 2024-02-01 | 住友理工株式会社 | 接触検知装置 |
CN118012288A (zh) * | 2024-01-31 | 2024-05-10 | 杭州哈乐德科技有限公司 | 触摸屏参数自适应校正方法、***、电子设备及存储介质 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100060609A1 (en) * | 2008-09-08 | 2010-03-11 | Hitachi Displays, Ltd. | Touched Position Detection Method for Touch Panel |
CN201654747U (zh) * | 2010-03-18 | 2010-11-24 | 通泰积体电路股份有限公司 | 具环境变化校正的电容式触控感测装置 |
CN102346612A (zh) * | 2010-07-30 | 2012-02-08 | 苹果公司 | 对于触摸感测装置中电容变化的补偿 |
CN102520819A (zh) * | 2011-11-25 | 2012-06-27 | 苏州瀚瑞微电子有限公司 | 一种单层ito的自动校准方法 |
CN102541382A (zh) * | 2012-01-18 | 2012-07-04 | 华为终端有限公司 | 校准电容式触摸屏的方法和终端 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0612510B2 (ja) * | 1986-09-19 | 1994-02-16 | 富士通株式会社 | 座標入力装置 |
JPH06332604A (ja) | 1993-05-21 | 1994-12-02 | Yokogawa Electric Corp | タッチ位置検出装置 |
JPH1091352A (ja) | 1996-09-13 | 1998-04-10 | Stanley Electric Co Ltd | アナログタッチパネル装置 |
US8054296B2 (en) * | 2007-01-03 | 2011-11-08 | Apple Inc. | Storing baseline information in EEPROM |
JP2010257046A (ja) | 2009-04-22 | 2010-11-11 | Mitsubishi Electric Corp | 近接検知装置 |
JP2011170617A (ja) | 2010-02-18 | 2011-09-01 | On Semiconductor Trading Ltd | 静電容量型タッチセンサ |
US8339286B2 (en) | 2010-03-31 | 2012-12-25 | 3M Innovative Properties Company | Baseline update procedure for touch sensitive device |
CN101833121B (zh) | 2010-04-09 | 2011-08-10 | 深圳市汇顶科技有限公司 | 一种双耦合型检测电路、雨量传感器及雨量识别方法 |
US8884631B2 (en) * | 2010-05-31 | 2014-11-11 | Egalax—Empia Technology Inc. | Method and device for automatically calibrating touch detection |
CN102402316B (zh) | 2010-09-07 | 2015-04-15 | 群康科技(深圳)有限公司 | 触控面板的感测值辨识方法与驱动装置 |
CN101963873B (zh) * | 2010-10-08 | 2012-10-10 | 展触光电科技股份有限公司 | 电容式触控面板电容基线值设定及校准方法 |
TWI520040B (zh) * | 2011-04-08 | 2016-02-01 | Elan Microelectronics Corp | Capacitive touch panel with improved environmental impact and its application |
CN102411448A (zh) * | 2011-10-26 | 2012-04-11 | 苏州瀚瑞微电子有限公司 | 一种触摸屏的自动校准方法 |
-
2012
- 2012-08-30 CN CN201210315508.1A patent/CN103677452B/zh active Active
-
2013
- 2013-07-01 WO PCT/CN2013/078557 patent/WO2014032474A1/zh active Application Filing
- 2013-08-27 US US14/011,165 patent/US9529475B2/en active Active
- 2013-08-29 EP EP20130182144 patent/EP2703965A1/en not_active Ceased
- 2013-08-30 JP JP2013178917A patent/JP5753235B2/ja active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100060609A1 (en) * | 2008-09-08 | 2010-03-11 | Hitachi Displays, Ltd. | Touched Position Detection Method for Touch Panel |
CN201654747U (zh) * | 2010-03-18 | 2010-11-24 | 通泰积体电路股份有限公司 | 具环境变化校正的电容式触控感测装置 |
CN102346612A (zh) * | 2010-07-30 | 2012-02-08 | 苹果公司 | 对于触摸感测装置中电容变化的补偿 |
CN102520819A (zh) * | 2011-11-25 | 2012-06-27 | 苏州瀚瑞微电子有限公司 | 一种单层ito的自动校准方法 |
CN102541382A (zh) * | 2012-01-18 | 2012-07-04 | 华为终端有限公司 | 校准电容式触摸屏的方法和终端 |
Also Published As
Publication number | Publication date |
---|---|
US20140062947A1 (en) | 2014-03-06 |
EP2703965A1 (en) | 2014-03-05 |
JP2014049137A (ja) | 2014-03-17 |
US9529475B2 (en) | 2016-12-27 |
JP5753235B2 (ja) | 2015-07-22 |
CN103677452B (zh) | 2017-05-24 |
CN103677452A (zh) | 2014-03-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2014032474A1 (zh) | 一种电容式触摸屏的校准方法和电容式触摸装置 | |
EP2821897B1 (en) | Finger detection on touch screens for mobile devices | |
WO2014086211A1 (zh) | 触摸屏的基准更新方法、***及触控终端 | |
US9134850B2 (en) | Method and system for updating reference data of capacitive multi-touch screen | |
JP5220886B2 (ja) | タッチパネル装置、表示装置、タッチパネル装置のキャリブレーション方法、プログラムおよび記録媒体 | |
CN101963873B (zh) | 电容式触控面板电容基线值设定及校准方法 | |
US9104265B2 (en) | Touch device and operating method thereof | |
US20120001859A1 (en) | Device and method for detecting noise | |
JP2014071835A (ja) | 電子機器及び処理制御方法 | |
JP2012118850A (ja) | 端末装置、自動キャリブレーションの実行方法およびプログラム | |
JP2015528616A (ja) | 雑音検出および補正ルーチン | |
TW201339935A (zh) | 電容式觸控系統、觸控裝置及觸控方法 | |
US11243639B2 (en) | Touch detection method, touch detection apparatus, and touch sensor controller | |
TWI649677B (zh) | 用於控制電子裝置的方法以及裝置 | |
JP6060783B2 (ja) | 補正処理プログラム、情報処理装置及び補正処理方法 | |
WO2016184191A1 (zh) | 复位校准的判断方法及装置、终端 | |
JP2016095648A (ja) | 入力装置 | |
JP6236351B2 (ja) | 入力装置 | |
CN107506067B (zh) | 触摸屏的工作频率调试方法、装置和终端设备 | |
JP5998661B2 (ja) | 情報端末装置及び押下判定方法 | |
TWI425404B (zh) | 電容式觸控板的接近偵測方法及利用電容式觸控板的接近偵測之控制方法 | |
US11829558B1 (en) | Capacitive touch screen calibration | |
TWI462002B (zh) | Signal processor, touch judgment device and touch judgment method | |
JP2016001357A (ja) | 電子機器、制御プログラム、タッチパネル制御icおよびタッチパネルユニット | |
JP2015073160A (ja) | 携帯端末、および制御方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13832853 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13832853 Country of ref document: EP Kind code of ref document: A1 |