WO2013123813A1 - 防止移动终端触摸屏误触控的方法、装置以及移动终端 - Google Patents

防止移动终端触摸屏误触控的方法、装置以及移动终端 Download PDF

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Publication number
WO2013123813A1
WO2013123813A1 PCT/CN2012/087284 CN2012087284W WO2013123813A1 WO 2013123813 A1 WO2013123813 A1 WO 2013123813A1 CN 2012087284 W CN2012087284 W CN 2012087284W WO 2013123813 A1 WO2013123813 A1 WO 2013123813A1
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Prior art keywords
touch screen
touch
signal strength
detection signal
mobile terminal
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PCT/CN2012/087284
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English (en)
French (fr)
Inventor
曾海涛
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中国移动通信集团公司
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Application filed by 中国移动通信集团公司 filed Critical 中国移动通信集团公司
Publication of WO2013123813A1 publication Critical patent/WO2013123813A1/zh

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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416Control or interface arrangements specially adapted for digitisers
    • G06F3/0418Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • G06F3/04186Touch location disambiguation

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, device, and mobile terminal for preventing a touch screen from being touched by a mobile terminal.
  • the touch screen has the advantages of being touched and obtained, and the operation is convenient.
  • the user can directly touch and touch on the screen with a finger or a touch pen, and perform positioning and operation to complete functions that are not possible by the non-touch screen.
  • Mainstream touch screens can be divided into two categories according to their working principles: resistive touch screens and capacitive touch screens.
  • the resistive touch screen is controlled by pressure sensing.
  • the capacitive touch screen uses current sensing to detect, when the finger or the touch pen
  • a finger or a touch pen forms a coupling capacitance with the surface of the touch screen, and a small current is drawn from the contact point, and the screen detects the touch operation and position accordingly. Since the capacitive touch screen has the advantages of supporting multi-touch, it has gradually become the standard for mainstream high-end mobile terminals.
  • the capacitive touch screen works by using a conductor such as a finger or a touch pen as an electrode of a capacitor element, and can work with the indium tin oxide (Indium Tin Oxide, ⁇ ) of the touch screen as long as the conductor is close to it. Capacitance can be coupled between the surfaces. For example, when a user uses a mobile terminal to make a voice call, a person's face can also be coupled with a touch screen. When the coupling capacitance reaches a certain value, the current flowing away is enough to cause a capacitance. False touch on the touch screen.
  • the prior art detects whether a conductor is in proximity during a user's voice call by setting a dedicated sensor device, such as an optical sensor, an infrared light sensor, a temperature sensor, and the like.
  • a dedicated sensor device such as an optical sensor, an infrared light sensor, a temperature sensor, and the like.
  • setting up a dedicated sensor will increase the design cost and design of the mobile terminal. Degree; Since the sensor needs to be on the same side as the touch screen, it is placed near the screen, which also limits the size and arrangement of the screen; and the detection range of the set sensor cannot cover the entire screen range.
  • the embodiments of the present invention provide a method, a device, and a mobile terminal for preventing a touch screen from being touched by a mobile terminal, which are used to solve the problem of avoiding the touch of the capacitive touch screen in the prior art, and the design cost and design difficulty are increased.
  • the size and arrangement of the capacitive touch screen, as well as the detection range cannot cover the entire range of the touch screen.
  • a method for preventing a touch screen from being touched by a mobile terminal comprising:
  • the touch screen is prohibited from responding to the touch.
  • a device for preventing a touch screen from being touched by a mobile terminal comprising:
  • a detection signal strength monitoring unit configured to monitor a detection signal strength output by the touch screen when the touch screen of the mobile terminal is in a touchable state
  • the erroneous touch determining unit is configured to determine, according to the detected relationship between the detected signal strength and the set threshold, whether the touch screen has a false touch;
  • the touch response inhibiting unit is configured to prohibit the touch screen from responding to the touch when determining that the touch screen is incorrectly touched.
  • a mobile terminal includes a touch screen and the above-mentioned device for preventing the touch screen of the mobile terminal from being touched by mistake.
  • the method and device for preventing the touch screen from being touched by the touch screen of the mobile terminal and the mobile terminal are provided by the embodiment of the present invention.
  • the solution monitors the strength of the detection signal output by the touch screen when the touch screen of the mobile terminal is in a touchable state; The relationship between the signal strength and the set threshold is detected to determine whether the touch screen is accidentally touched. When it is determined that the touch screen is accidentally touched, the touch screen is prohibited from responding to the touch.
  • the solution monitors the intensity of the detection signal output by the touch screen, and compares the detection signal strength with the set threshold to determine whether the touch screen has a false touch. Once the touch screen is determined to have an incorrect touch, the touch screen is prohibited from responding to the touch.
  • the mobile terminal it is possible to prevent the touch screen from being touched by mistake, without adding Cost and design difficulty, and can monitor the entire touch screen of the mobile terminal, and the accuracy of the judgment result is high; there is no need to add a special sensor to determine that the touch screen has been touched incorrectly, which avoids the design cost caused by the addition of a special sensor. And the design difficulty increases, limiting the size and arrangement of the capacitive touch screen, and the detection range cannot cover the entire touch screen range.
  • FIG. 1 is a flowchart of a method for preventing a touch screen from being touched by a touch screen of a mobile terminal according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of an apparatus for preventing a touch screen from being touched by a touch screen of a mobile terminal according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a preferred mobile terminal according to an embodiment of the present invention.
  • An embodiment of the present invention provides a method for preventing a touch screen from being touched by a mobile terminal. The process of the method is as shown in FIG. 1 .
  • Step S10 Start.
  • Step S11 Monitor the strength of the detection signal output by the touch screen when the touch screen of the mobile terminal is in a touchable state.
  • the existing mobile terminal touch screen is in a touchable state during use (for example, a voice call, a web browsing, etc.), and the touch screen can be used to perform corresponding operations.
  • a touchable state for example, a voice call, a web browsing, etc.
  • the touch screen can be used to perform corresponding operations.
  • it is necessary to monitor the strength of the detection signal output from the touch screen. It can be monitored according to the set time period, or the monitoring time can be set as needed.
  • Step S12 Determine whether the touch screen has a false touch according to the relationship between the detected detection signal strength and the set threshold. When the result is YES, step S13 is performed; when the result is no, step S11 is performed.
  • Step S13 Disabling the touch screen from responding to the touch.
  • the number of touch points is only a few.
  • a person's face, arm, etc. inadvertently touch the touch screen or touch the touch screen, this causes a false touch because This is not a touch made to achieve an operation, in which case the number of touch points will be more.
  • the detected signal strength and the set threshold it can be determined whether the touch screen has a wrong touch. Once it is determined that the touch is incorrect, the touch screen is prohibited from responding to the touch, but the touch screen can still be monitored. The detected signal strength.
  • the detection signal strength of the monitoring touch screen output in the above step S11 is different according to the number of electrodes of the touch screen, and the detection signal strength output by the touch screen is also different, which may include the following situations:
  • the current intensity of the electrode flowing out of the touch screen is monitored according to a set time period, and the monitored current intensity is used as the detection signal strength of the touch screen output.
  • the existing capacitive touch screen is provided with electrodes.
  • the human body approaches the touch screen or touches the touch screen, the human body acts as another electrode, forming a coupling capacitance with the touch screen, and current flows from the electrodes of the touch screen.
  • the touch screen has one electrode, the current intensity of the electrodes of the touch screen can be monitored according to a set time period, and the monitored current intensity is used as the detection signal strength of the touch screen output.
  • the time period can be set according to actual needs. If you need to accurately monitor the touch screen, you can set the time period to be shorter; if you do not need to accurately monitor the touch screen, you can set the time period longer.
  • the touch screen has at least two electrodes
  • the current intensity respectively flowing from at least two electrodes of the touch screen is monitored according to a set time period, and the average value of the monitored at least two current intensities is used as a detection signal output by the touch screen. strength.
  • the average of the monitored respective current intensities is taken as the detected signal strength of the touch screen output.
  • the time period can be set according to actual needs. If it is necessary to accurately monitor the touch screen, the time period can be set shorter; if the touch screen does not need to be accurately monitored, the time period can be set longer.
  • the touch screen has at least two electrodes
  • the current intensity respectively flowing from the at least two electrodes of the touch screen is monitored according to the set time period, and the sum of the monitored at least two current intensities is used as the detection of the touch screen output. Signal strength.
  • the sum of the monitored respective current intensities can also be used as the detected signal strength of the touch screen output.
  • the time period can be set according to actual needs. If the touch screen needs to be accurately monitored, the time period can be set shorter; if the touch screen does not need to be accurately monitored, the time period can be set longer.
  • the method for determining whether the touch screen has a false touch in the above step S12 is different according to the detected detection signal strength, and may include the following two situations:
  • the first type determines that the touch screen occurs when the detected detection signal strength is greater than the first set threshold. False touch.
  • the first set threshold value can be determined accordingly, which is used to indicate that the touch screen is incorrectly touched.
  • the first set threshold is A
  • the detected signal strength is S
  • S that is, when S>A
  • the detected signal strength has exceeded the allowable range
  • the second set threshold is less than the first set threshold
  • the second set threshold may be determined according to the second set threshold, which is used to indicate the upper limit of the upcoming touch, and the second set threshold should be smaller than the first Set the threshold.
  • the number of touch points currently needed by the touch screen needs to be further determined.
  • the number of touch points reaches the set touch point threshold, Make sure the touch screen has been touched incorrectly. This makes it more accurate to determine if the touch screen has been touched incorrectly.
  • the touch screen enters an early warning state, and does not immediately respond to the touch, that is, does not immediately respond to the user's operation, but waits for the touch screen sensor to finally determine the input point position
  • the process of determining the current number of touch points of the touch screen includes: acquiring location information of the touch point determined by the sensor in the touch screen; determining the current number of touch points of the touch screen according to the determined position information of the touch point.
  • the method further includes: when the touch screen is determined to be restored by the touched touch to the touch, the touch screen is restored to respond to the touch.
  • step S12 After it is determined in step S12 that the touch screen has been touched by mistake, the touch screen is prohibited from responding to the touch. At this time, the check signal strength of the touch screen is also monitored in real time. When it is determined that no false touch occurs, the touch screen can be returned to respond to the touch. Features. This realizes that the touch screen can be monitored in real time, and the touch screen responds to the touch function in real time according to the detected signal strength of the monitor.
  • the determining that the touch screen is restored from the occurrence of the false touch to the occurrence of the false touch does not include: when the detected detection signal strength is less than the second set threshold, determining that the touch screen is restored from the occurrence of the false touch to the occurrence of the false touch control.
  • an embodiment of the present invention provides a device for preventing a touch screen from being touched by a mobile terminal.
  • the structure of the device is as shown in FIG. 2, and includes:
  • the detection signal strength monitoring unit 20 is configured to monitor the detection signal strength output by the touch screen when the touch screen of the mobile terminal is in a touchable state.
  • the detected signal strength monitoring unit can be always in the monitoring state regardless of the state of the mobile terminal. It is also possible to adjust the capacitive touch screen to accurately recognize the user's operating position when the capacitive touch screen is in a normal working state, and only respond to the human body and other parts completely touching the screen; when the mobile terminal enters a state of speech call, the detection signal strength monitoring With the unit enabled, the sensing standard of the capacitive touch screen will be reduced, and the detected signal strength will be monitored in real time.
  • the unit can be independent of the on/off state of the touch screen backlight, even if the screen backlight is off and no longer accepts user input, the unit needs to work as long as it is still in voice call. When the mobile terminal is no longer in a state such as a language call, the unit can be turned off, thereby saving energy consumption of the mobile terminal.
  • the erroneous touch determining unit 21 is configured to determine whether the touch screen is erroneously touched according to the relationship between the detected signal strength and the set threshold detected by the detected signal strength monitoring unit 20.
  • the unit may be embedded in the touch screen processing chip for determining whether a person's face or the like is close to the touch screen according to the information sent by the detection signal strength monitoring unit.
  • the touch response prohibiting unit 22 is configured to prohibit the touch screen from responding to the touch when the false touch determining unit determines that the touch screen is incorrectly touched.
  • the detection signal strength monitoring unit 20 is configured to: when the touch screen has one electrode, monitor the current intensity of the electrode flowing out of the touch screen according to a set time period, and use the monitored current intensity as a detection signal output by the touch screen. strength.
  • the detection signal strength monitoring unit 20 is configured to: when the touch screen has at least two electrodes, monitor current intensity respectively flowing from at least two electrodes of the touch screen according to a set time period, and monitor at least two The average of the current intensities is used as the detected signal strength of the touch screen output.
  • the detection signal strength monitoring unit 20 is configured to: when the touch screen has at least two electrodes, monitor current intensity respectively flowing from at least two electrodes of the touch screen according to a set time period, and monitor at least two The sum of the current intensities is used as the detected signal strength of the touch screen output.
  • the erroneous touch determining unit 21 is configured to: when the detected signal strength monitored by the detected signal strength monitoring unit 20 is greater than the first set threshold, determine that the touch screen is erroneously touched.
  • the specific touch control unit 21 is configured to: determine the current touch point number of the touch screen when the detected signal strength monitored by the detected signal strength monitoring unit 20 is greater than the second set threshold and less than the first set threshold.
  • the second set threshold is less than the first set threshold; when the determined number of touch points of the touch screen reaches the set touch point threshold, it is determined that the touch screen is incorrectly touched.
  • the erroneous touch determining unit 21 is configured to: acquire touch point location information determined by a sensor in the touch screen; and determine a current touch point number of the touch screen according to the determined touch point location information.
  • the device for preventing the touch screen from being touched by the touch screen of the mobile terminal further includes: a touch response recovery unit 23, configured to: when the false touch determination unit 21 determines that the touch screen is restored from the touched touch to when no false touch occurs, Restore the touch screen in response to touch.
  • a touch response recovery unit 23 configured to: when the false touch determination unit 21 determines that the touch screen is restored from the touched touch to when no false touch occurs, Restore the touch screen in response to touch.
  • the touch response recovery unit 23 is configured to: when the detected signal strength monitored by the detected signal strength monitoring unit 20 is less than the second set threshold, determine that the touch screen is restored from the occurrence of the false touch to the occurrence of the false touch.
  • an embodiment of the present invention provides a mobile terminal, and the structure of the mobile terminal As shown in FIG. 3, the touch screen 30 and the device 31 for preventing the touch screen from being touched by the touch screen of the mobile terminal as shown in FIG. 2 are included, wherein the touch screen is a capacitive touch screen.
  • the mobile terminal can be in a touchable state in various situations, such as a voice call, browsing a webpage, etc., and the following is an example in which the mobile terminal is in a language call state.
  • FIG. 4 is a schematic diagram of the operation between the units in the mobile terminal, wherein the voice call unit 41 can monitor whether the mobile terminal is in a voice call state; the mobile terminal operating system 42 can perform the detection signal strength monitoring unit 20, and the false touch.
  • the transmission of the command and response between the control determining unit 21, the touch response inhibiting unit 22, the touch response restoring unit 23, the touch screen 30, and the like may also be in the detected signal strength monitoring unit 20, the false touch determining unit 21,
  • the touch response inhibiting unit 22 and the touch response restoring unit 23 directly perform signaling and response transmission; the touch screen control unit 43 can control the touch screen 30 and the detected signal strength monitoring unit 20 to be in a display off state.
  • the mobile terminal voice call unit notifies the touch screen control unit of the call state through the mobile terminal operating system, and the touch screen control unit executes a control command to enable the detection signal strength monitoring unit to monitor the detection signal strength output by the touch screen.
  • the touch screen control unit executes a control command to enable the detection signal strength monitoring unit to monitor the detection signal strength output by the touch screen.
  • the relevant event can be monitored.
  • the touch screen control unit turns off the detection signal strength monitoring unit of the screen, and only when the user actually touches the touch screen, the touch screen will be perceived.
  • the detection signal strength monitoring unit can also be in the working state all the time, and the detection signal strength outputted by the touch screen is always monitored.
  • the touch screen control unit When the false touch determination unit determines that the user's face is approaching, the touch screen control unit will receive a notification of the false touch event, the unit executes the control command, turns off the screen display, prohibits the touch screen from responding to the touch, and only retains the detection signal.
  • the strength monitoring unit continues to work, which not only saves the energy of the mobile terminal, but also avoids the user's accidental touch; when the false touch determination unit finds that the user's face is far away, the touch screen control unit receives the false touch release event notification, executes the control command, and resumes the screen display. And restore the touch screen touch function.
  • the present invention is different from the existing method for preventing erroneous operation, and does not require an additional sensor, but uses the characteristics of the capacitive touch screen itself for detection.
  • the touch screen is only used to receive user input, and strives to be accurate, for which the capacitive touch screen is configured in use to ensure that only the user's finger touches the screen.
  • the present invention utilizes the feature that the capacitive touch screen can generate "non-contact or response", and converts this "disadvantage" into a detection tool.
  • the embodiment of the invention monitors the output of the touch screen Detecting the signal strength, and comparing the detected signal strength with the set threshold to determine whether the touch screen has a false touch.
  • the touch screen is prohibited from responding to the touch, for example: when the user's face and the like are close to the screen
  • the touch screen is sensed in advance, and the user's intention is predicted, so as to avoid accidental collision.
  • the solution can prevent the touch screen from being touched in the existing mobile terminal, without increasing the design cost and the design difficulty, and can monitor the entire touch screen of the mobile terminal, and the judgment result is high; no special sensor is needed to determine the touch screen occurs.
  • the wrong touch which avoids the increase of design cost and design difficulty due to the addition of special sensors, limits the size and arrangement of the capacitive touch screen, and the detection range cannot cover the entire touch screen range.

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Abstract

一种防止移动终端触摸屏误触控的方法、装置以及移动终端,该方法包括:当移动终端的触摸屏处于可触控状态时,监控触摸屏输出的检测信号强度;根据监控到的检测信号强度和设定阈值的关系,确定触摸屏是否发生误触控;当确定触摸屏发生误触控时,禁止触摸屏响应触控。该方案还提供一种防止移动终端触摸屏误触控的装置以及移动终端。

Description

防止移动终端触摸屏误触控的方法、 装置以及移动终端 本申请要求于 2012 年 2 月 20 日提交中国专利局、 申请号为 201210040078.7、 发明名称为 "防止移动终端触摸屏误触控的方法、 装置以及 移动终端" 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
本发明涉及通信技术领域, 尤指一种防止移动终端触摸屏误触控的方法、 装置以及移动终端。
背景技术
随着用户对移动终端性能需求的不断增加, 移动终端的功能越来越强大, 不仅能够提供基本的语音通话功能, 还能提供上网、 多媒体等功能。 为了更好 的实现这些强大功能,能够扩大用户操作界面的触摸屏技术得到了深入发展和 广泛推广, 并逐渐取代了按钮、 键盘, 逐渐成为移动终端的标准配置。
触摸屏具有所触即所得、操作便捷的优点, 用户可以直接用手指或者触摸 笔等在屏幕上触摸, 进行定位、 操作, 完成非触摸屏不可实现的功能。 主流触 摸屏按照工作原理可以分为两大类: 电阻触摸屏和电容触摸屏。 电阻触摸屏利 用压力感应进行控制, 当手指或者触摸笔等触摸屏幕时,屏幕中导电层电阻发 生变化,屏幕据此检测触控操作和位置;电容触摸屏则利用电流感应进行检测, 当手指或者触摸笔等导体触摸电容屏时,手指或者触摸笔等与触摸屏表面形成 以一个耦合电容, 并从接触点吸走一个很小的电流,屏幕据此检测触控操作和 位置。 由于电容触摸屏具有支持多点触控的优点, 目前已逐渐成为主流高端移 动终端的标配。但是电容触摸屏存在以下缺陷: 电容触摸屏的工作原理是把手 指或者触摸笔等导体当作一个电容器元件的一个电极使用,只要有导体靠近就 可以与触摸屏的氧化铟锡( Indium Tin Oxide , ΙΤΟ )工作面之间就能耦合出电 容, 例如在用户使用移动终端进行语音通话的过程中,人的脸部也可以与触摸 屏耦合出电容, 当耦合电容达到一定值时, 流走的电流就足够引起电容触摸屏 的误触控。
为了克服电容触摸屏的缺陷,现有技术通过设置专用传感器件来检测用户 语音通话过程中是否有导体接近, 例如设置光学传感器、 红外光敏元件、 温度 传感器等器件。 但是设置专门的传感器会增加移动终端的设计成本和设计难 度; 由于传感器需要与触摸屏同侧, 安置在屏幕附近, 也会限制屏幕的大小和 布置; 并且设置的传感器的检测范围无法覆盖整个屏幕范围。
发明内容
本发明实施例提供一种防止移动终端触摸屏误触控的方法、装置以及移动 终端, 用以解决现有技术中存在的避免电容触摸屏的误触控时,导致的设计成 本和设计难度增加, 限制电容触摸屏的大小和布置, 以及检测范围无法覆盖整 个触摸屏范围的问题。
一种防止移动终端触摸屏误触控的方法, 包括:
当移动终端的触摸屏处于可触控状态时, 监控触摸屏输出的检测信号强 度;
根据监控到的所述检测信号强度和设定阈值的关系,确定触摸屏是否发生 误触控;
当确定触摸屏发生误触控时, 禁止触摸屏响应触控。
一种防止移动终端触摸屏误触控的装置, 包括:
检测信号强度监控单元, 用于当移动终端的触摸屏处于可触控状态时,监 控触摸屏输出的检测信号强度;
误触控确定单元, 用于根据监控到的所述检测信号强度和设定阈值的关 系, 确定触摸屏是否发生误触控;
触控响应禁止单元, 用于当确定触摸屏发生误触控时, 禁止触摸屏响应触 控。
一种移动终端, 包括触摸屏和上述防止移动终端触摸屏误触控的装置。 本发明有益效果如下:
本发明实施例提供的防止移动终端触摸屏误触控的方法、装置以及移动终 端, 该方案通过当移动终端的触摸屏处于可触控状态时,监控触摸屏输出的检 测信号强度; 根据监控到的所述检测信号强度和设定阈值的关系,确定触摸屏 是否发生误触控; 当确定触摸屏发生误触控时, 禁止触摸屏响应触控。 该方案 通过监控触摸屏输出的检测信号强度,并将该检测信号强度与设定阈值进行比 较确定触摸屏是否发生误触控,一旦确定触摸屏发生误触控, 禁止触摸屏响应 触控, 该方案在现有的移动终端中就可以实现防止触摸屏误触控, 不用增加设 计成本和设计难度,并且可以监控移动终端的整个触摸屏,判断结果准确性高; 不必增加专门的传感器来确定触摸屏发生了误触控,这也就避免了由于增加专 门的传感器就会导致设计成本和设计难度增加, 限制电容触摸屏的大小和布 置, 以及检测范围无法覆盖整个触摸屏范围。
附图说明
图 1为本发明实施例中防止移动终端触摸屏误触控的方法流程图; 图 2为本发明实施例中防止移动终端触摸屏误触控的装置的结构示意图; 图 3为本发明实施例中移动终端的结构示意图;
图 4为本发明实施例中一种优选的移动终端的结构示意图。
具体实施方式
针对现有技术中存在的通过设置专门的传感器来避免电容触摸屏的误触 控时, 导致的设计成本和设计难度增加, 限制电容触摸屏的大小和布置, 以及 检测范围无法覆盖整个触摸屏范围的问题,本发明实施例提供一种防止移动终 端触摸屏误触控的方法, 该方法的流程如图 1所示, 具体执行步骤如下:
步骤 S10: 开始。
步骤 S11: 当移动终端的触摸屏处于可触控状态时, 监控触摸屏输出的检 测信号强度。
现有的移动终端触摸屏在使用过程 (例如: 语音通话、浏览网页等等)中, 会处于可触控状态, 这时可以通过触控触摸屏来进行相应的操作。 只要触摸屏 处于可触控状态, 就需要监控从触摸屏输出的检测信号强度。可以按照设定的 时间周期进行监控, 也可以按照需要设定监控的时间。
步骤 S12: 根据监控到的检测信号强度和设定阈值的关系, 确定触摸屏是 否发生误触控, 当结果为是时, 执行步骤 S13; 当结果为否时, 执行步骤 Sll。
步骤 S13: 禁止触摸屏响应触控。
一般对触摸屏进行正常的触控操作时, 触控点数目只有少数几个, 当人的 脸部、胳膊等部位无意中要接触到触摸屏或者接触到触摸屏时, 这就发生了误 触控,因为这不是为了实现某个操作而做出的触控,这时触控点数目会比较多。 根据监控到的检测信号强度和设定阈值就可以确定触摸屏是否发生误触控,一 旦确定发生了误触控, 马上禁止触摸屏响应触控,但是依然可以监控触摸屏输 出的检测信号强度。
具体的,上述步骤 S11中的监控触摸屏输出的检测信号强度,根据触摸屏 具有的电极的数目不同,触摸屏输出的检测信号强度也不相同, 可以包括以下 几种情况:
第一种, 当触摸屏具有一个电极时,按照设定的时间周期监控触摸屏的该 电极流出的电流强度, 将监控到的电流强度作为触摸屏输出的检测信号强度。
现有的电容触摸屏设置有电极, 当人体接近触摸屏或触控到触摸屏时,人 体作为另一个电极, 与触摸屏形成耦合电容, 此时会有电流从触摸屏的电极流 出。 当触摸屏具有一个电极时, 可以按照设定的时间周期监控触摸屏的电极流 出的电流强度,将监控到的电流强度作为触摸屏输出的检测信号强度。可以依 据实际需要设定时间周期,如果需要精确地监控触摸屏时, 可以将时间周期设 置的短一些;如果不需要精确地监控触摸屏时,可以将时间周期设置的长一些。
第二种, 当触摸屏具有至少两个电极时,按照设定的时间周期监控分别从 触摸屏的至少两个电极流出的电流强度,将监控到的至少两个电流强度的均值 作为触摸屏输出的检测信号强度。
当触摸屏具有至少两个电极时,将监控到的各个电流强度的均值作为触摸 屏输出的检测信号强度。可以依据实际需要设定时间周期,如果需要精确地监 控触摸屏时,可以将时间周期设置的短一些;如果不需要精确地监控触摸屏时, 可以将时间周期设置的长一些。
第三种, 当触摸屏具有至少两个电极时,按照设定的时间周期监控分别从 触摸屏的至少两个电极流出的电流强度,将监控到的至少两个电流强度的和值 作为触摸屏输出的检测信号强度。
当触摸屏具有至少两个电极时,也可以将监控到的各个电流强度的和值作 为触摸屏输出的检测信号强度。可以依据实际需要设定时间周期,如果需要精 确地监控触摸屏时, 可以将时间周期设置的短一些; 如果不需要精确地监控触 摸屏时, 可以将时间周期设置的长一些。
具体的,上述步骤 S12中确定触摸屏是否发生误触控的方法, 随监控到的 检测信号强度不同而不同, 可以包括以下两种情况:
第一种, 当监控到的检测信号强度大于第一设定阈值时,确定触摸屏发生 误触控。
当触摸屏发生误触控时,会有较多的触控点, 这时得到的检测信号强度也 会比较大, 可以据此来确定第一设定阈值, 用来表示确定触摸屏发生误触控的 下限。 假设第一设定阈值为 A, 检测信号强度为 S, 也就是说当 S>A时, 检 测信号强度已经超出允许的范围, 则认为是人脸等等部位接近或接触触摸屏, 这时就可以确定发生了误触控事件, 进而可以锁定触摸屏, 禁止触摸屏响应触 控, 当然也可以关闭屏幕显示。
第二种,当监控到的检测信号强度大于第二设定阈值且小于第一设定阈值 时, 确定触摸屏当前的触控点数目, 第二设定阈值小于第一设定阈值; 当确定 的触摸屏当前的触控点数目达到设定的触控点阈值时, 确定触摸屏发生误触 控。
当触摸屏即将能感应到要发生触控时,检测信号强度是比较小的, 可以据 此来确定第二设定阈值, 用来表示即将发生触控的上限, 第二设定阈值应该小 于第一设定阈值。当监控到的检测信号强度在第一设定阈值和第二设定阈值之 间的时候, 需要进一步确定触摸屏当前的触控点数目, 当触控点数目达到设定 的触控点阈值时,确定触摸屏发生了误触控。这样可以更加准确的确定触摸屏 是否发生了误触控。
假设第二设定阈值为 B , 当 B<S<A时, 触摸屏进入预警状态, 不会即刻 响应触控,也就是不用立即响应用户的操作, 而是等待触摸屏传感器最终确定 输入点位置, 可以利用移动终端上已有的传感器进行辅助, 包括用来自动调节 屏幕亮度的光线传感器、摄像头等,从而提高对人的脸等部位靠近事件的监控 准确性。 如果触摸屏最终确定输入为多个点, 则认为是由大面积接触造成, 即 可能是人的脸等部位与屏幕接触造成的, 这时就可以确定发生了误触控事件, 进而可以锁定触摸屏, 禁止触摸屏响应触控, 当然也可以关闭屏幕显示。 当触 摸屏敏感度调高后,在人脸与触摸屏完全接触之前,即可探测到多个预接触点, 从而提前判断误触控事件, 避免语言通话等过程中的误操作。
具体的, 上述确定触摸屏当前的触控点数目的过程, 具体包括: 获取触摸 屏中的传感器确定出的触控点位置信息; 根据确定出的触控点位置信息,确定 触摸屏当前的触控点数目。 较佳的, 上述步骤 S13中的禁止触摸屏响应触控之后, 还包括: 当确定触 摸屏由发生误触控恢复到未发生误触控时 , 恢复触摸屏响应触控。
在步骤 S12中确定触摸屏发生了误触控之后,就禁止触摸屏响应触控,这 时还在实时监控触摸屏的检查信号强度, 当确定为未发生误触控时, 就可以回 复触摸屏响应触控的功能。这就实现了可以实时监控触摸屏,根据监控的检测 信号强度实时更换触摸屏响应触控的功能。
具体的, 上述确定触摸屏由发生误触控恢复到未发生误触控, 具体包括: 当监控到的检测信号强度小于第二设定阈值时,确定触摸屏由发生误触控恢复 到未发生误触控。
当监控到的检测信号强度小于第二设定阈值时,认为触摸屏误触控操作已 经结束,也就确定了触摸屏由发生误触控恢复到未发生误触控,从而回复触摸 屏响应触控, 实现正常的操作。
也就是说当 S<B 时, 可以确定为未发生误触控, 这时没有人体等接近触 摸屏。 当由 S>B进入到 S<B的状态时, 可以确定预警接触事件, 重新恢复响 应触控, 点亮触摸屏。
基于同一发明构思,本发明实施例提供一种防止移动终端触摸屏误触控的 装置, 该装置的结构如图 2所示, 包括:
检测信号强度监控单元 20, 用于当移动终端的触摸屏处于可触控状态时, 监控触摸屏输出的检测信号强度。
在本发明中,可以不管移动终端处于何种状态该检测信号强度监控单元一 直处于监控状态。也可以在电容触摸屏处于正常工作状态时,将电容触摸屏调 节为精确识别用户操作位置, 并且只对人体等部位完全接触屏幕才做出响应; 当移动终端进入语言通话等状态时,检测信号强度监控单元使能, 电容触摸屏 的感应标准将减低, 进而实时监控检测信号强度。该单元可以独立于触摸屏背 光的开关状态, 即使屏幕背光关闭, 不再接收用户输入时, 只要仍处于语音通 话等过程中该单元就需要工作。 当移动终端不再处于语言通话等状态时, 该单 元可以关闭, 从而节约移动终端能耗。
误触控确定单元 21 , 用于根据检测信号强度监控单元 20监控到的检测信 号强度和设定阈值的关系, 确定触摸屏是否发生误触控。 该单元可以内嵌于触摸屏处理芯片中,用于根据检测信号强度监控单元发 出的信息判断是否有人的脸等部位接近触摸屏。
触控响应禁止单元 22, 用于当误触控确定单元确定触摸屏发生误触控时, 禁止触摸屏响应触控。
具体的, 上述述检测信号强度监控单元 20, 用于: 当触摸屏具有一个电 极时,按照设定的时间周期监控触摸屏的该电极流出的电流强度,将监控到的 电流强度作为触摸屏输出的检测信号强度。
具体的, 上述检测信号强度监控单元 20, 用于: 当触摸屏具有至少两个 电极时,按照设定的时间周期监控分别从触摸屏的至少两个电极流出的电流强 度, 将监控到的至少两个电流强度的均值作为触摸屏输出的检测信号强度。
具体的, 上述检测信号强度监控单元 20, 用于: 当触摸屏具有至少两个 电极时,按照设定的时间周期监控分别从触摸屏的至少两个电极流出的电流强 度, 将监控到的至少两个电流强度的和值作为触摸屏输出的检测信号强度。
具体的, 上述误触控确定单元 21 , 用于: 当检测信号强度监控单元 20监 控到的检测信号强度大于第一设定阈值时, 确定触摸屏发生误触控。
具体的上述误触控确定单元 21 , 用于: 当检测信号强度监控单元 20监控 到的检测信号强度大于第二设定阈值且小于第一设定阈值时,确定触摸屏当前 的触控点数目, 第二设定阈值小于第一设定阈值; 当确定的触摸屏当前的触控 点数目达到设定的触控点阈值时, 确定触摸屏发生误触控。
具体的, 上述误触控确定单元 21 , 用于: 获取触摸屏中的传感器确定出 的触控点位置信息; 根据确定出的触控点位置信息,确定触摸屏当前的触控点 数目。
较佳的, 上述防止移动终端触摸屏误触控的装置, 还包括: 触控响应恢复 单元 23 , 用于当误触控确定单元 21确定触摸屏由发生误触控恢复到未发生误 触控时, 恢复触摸屏响应触控。
具体的, 上述触控响应恢复单元 23 , 用于: 当检测信号强度监控单元 20 监控到的检测信号强度小于第二设定阈值时,确定触摸屏由发生误触控恢复到 未发生误触控。
基于同一发明构思, 本发明实施例提供一种移动终端, 该移动终端的结构 如图 3所示, 包括触摸屏 30和如图 2所示的防止移动终端触摸屏误触控的装 置 31 , 其中, 触摸屏为电容触摸屏。
移动终端在^艮多种情况下都可处于可触控状态, 例如语音通话、浏览网页 等等, 下面以移动终端处于语言通话状态为例进行说明。如图 4所示为该移动 终端中各个单元之间的工作原理图, 其中语音通话单元 41可以监控移动终端 是否处于语音通话状态; 移动终端操作系统 42可以执行检测信号强度监控单 元 20、 误触控确定单元 21、 触控响应禁止单元 22、 触控响应恢复单元 23、 触 摸屏 30等等之间的指令和响应的传输, 当然也可以在检测信号强度监控单元 20、 误触控确定单元 21、 触控响应禁止单元 22、 触控响应恢复单元 23之间直 接进行信令和响应的传输;触摸屏控制单元 43可以控制触摸屏 30以及检测信 号强度监控单元 20处于显示关闭状态。
当用户使用移动终端开始通话时,移动终端语音通话单元通过移动终端操 作系统将通话状态通知触摸屏控制单元, 由触摸屏控制单元执行控制指令,使 能检测信号强度监控单元,监控触摸屏输出的检测信号强度,确保当用户面部 将要接触屏幕时, 能够监控到相关事件。 当用户结束语音通话时, 触摸屏控制 单元关闭屏幕的检测信号强度监控单元, 这时只有用户真正接触到触摸屏, 触 摸屏才会感知。 当然, 检测信号强度监控单元也可以一直处于工作状态, 一直 监控触摸屏输出的检测信号强度。
在通话过程中, 当误触控确定单元确定用户面部接近时,触摸屏控制单元 会收到误触控事件的通知, 该单元执行控制命令, 关闭屏幕显示, 禁止触摸屏 响应触碰, 只保留检测信号强度监控单元继续工作, 既节约移动终端能源, 同 时避免用户误触控; 当误触控确定单元发现用户面部远离时,触摸屏控制单元 收到误触控解除事件通知,执行控制命令, 恢复屏幕显示及恢复触摸屏触控的 功能。
本发明与现有的防止误操作方法不同, 不需要额外增加传感器, 而是利用 电容触摸屏本身的特性进行检测。现有技术中,触摸屏只被用来接收用户输入, 并且力求准确无误,为此电容触摸屏在使用中被配置为尽量保证只有用户手指 接触屏幕时才响应。 而本发明则利用了电容触摸屏能够发生 "非接触即响应" 的特征, 将这个 "缺点"转化为检测工具。 本发明实施例通过监控触摸屏输出 的检测信号强度,并将该检测信号强度与设定阈值进行比较确定触摸屏是否发 生误触控, 一旦确定触摸屏发生误触控, 禁止触摸屏响应触控, 例如: 当用户 的脸等部位与屏幕接近到一定程度时, 提前引起触摸屏感知, 预判用户意图, 从而避免误碰。该方案在现有的移动终端中就可以实现防止触摸屏误触控, 不 用增加设计成本和设计难度, 并且可以监控移动终端的整个触摸屏, 判断结果 准确性高; 不必增加专门的传感器来确定触摸屏发生了误触控, 这也就避免了 由于增加专门的传感器就会导致设计成本和设计难度增加,限制电容触摸屏的 大小和布置, 以及检测范围无法覆盖整个触摸屏范围。 明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及 其等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种防止移动终端触摸屏误触控的方法, 其特征在于, 包括: 当移动终端的触摸屏处于可触控状态时, 监控触摸屏输出的检测信号强 度;
根据监控到的所述检测信号强度和设定阈值的关系,确定触摸屏是否发生 误触控;
当确定触摸屏发生误触控时, 禁止触摸屏响应触控。
2、 如权利要求 1所述的方法, 其特征在于, 监控触摸屏输出的检测信号 强度, 具体包括:
当触摸屏具有一个电极时,按照设定的时间周期监控触摸屏的该电极流出 的电流强度, 将监控到的电流强度作为触摸屏输出的检测信号强度。
3、 如权利要求 1所述的方法, 其特征在于, 监控触摸屏输出的检测信号 强度, 具体包括:
当触摸屏具有至少两个电极时,按照设定的时间周期监控分别从触摸屏的 各电极流出的电流强度,将监控到的各电流强度的均值作为触摸屏输出的检测 信号强度。
4、 如权利要求 1所述的方法, 其特征在于, 监控触摸屏输出的检测信号 强度, 具体包括:
当触摸屏具有至少两个电极时,按照设定的时间周期监控分别从触摸屏的 各电极流出的电流强度,将监控到的各电流强度的和值作为触摸屏输出的检测 信号强度。
5、 如权利要求 1至 4中任一项所述的方法, 其特征在于, 确定触摸屏是 否发生误触控, 具体包括:
当监控到的所述检测信号强度大于第一设定阈值时,则确定触摸屏发生误 触控。
6、 如权利要求 1至 4中任一项所述的方法, 其特征在于, 确定触摸屏是 否发生误触控, 具体包括:
当监控到的所述检测信号强度大于第二设定阈值且小于第一设定阈值时, 则确定触摸屏当前的触控点数目, 所述第二设定阈值小于第一设定阈值; 当确定的触摸屏当前的触控点数目达到设定的触控点阈值时,则确定触摸 屏发生误触控。
7、 如权利要求 6所述的方法, 其特征在于, 确定触摸屏当前的触控点数 目, 具体包括:
获取触摸屏中的传感器确定出的触控点位置信息;
根据确定出的触控点位置信息, 确定触摸屏当前的触控点数目。
8、 如权利要求 1至 7中任一所述的方法, 其特征在于, 所述禁止触摸屏 响应触控之后, 还包括:
当确定触摸屏由发生误触控恢复到未发生误触控时, 恢复触摸屏响应触 控。
9、 如权利要求 8所述的方法, 其特征在于, 确定触摸屏由发生误触控恢 复到未发生误触控, 具体包括:
当监控到的所述检测信号强度小于第二设定阈值时,确定触摸屏由发生误 触控恢复到未发生误触控。
10、 一种防止移动终端触摸屏误触控的装置, 其特征在于, 包括: 检测信号强度监控单元, 用于当移动终端的触摸屏处于可触控状态时,监 控触摸屏输出的检测信号强度;
误触控确定单元,用于根据检测信号强度监控单元监控到的所述检测信号 强度和设定阈值的关系, 确定触摸屏是否发生误触控;
触控响应禁止单元, 用于当误触控确定单元确定触摸屏发生误触控时, 禁 止触摸屏响应触控。
11、 如权利要求 10所述的装置, 其特征在于, 所述检测信号强度监控单 元, 具体用于:
当触摸屏具有一个电极时,按照设定的时间周期监控触摸屏的该电极流出 的电流强度, 将监控到的电流强度作为触摸屏输出的检测信号强度。
12、 如权利要求 10所述的装置, 其特征在于, 所述检测信号强度监控单 元, 具体用于当触摸屏具有至少两个电极时,按照设定的时间周期监控分别从 触摸屏的各电极流出的电流强度,将监控到的各电流强度的均值作为触摸屏输 出的检测信号强度。
13、 如权利要求 10所述的装置, 其特征在于, 所述检测信号强度监控单 元, 具体用于当触摸屏具有至少两个电极时,按照设定的时间周期监控分别从 触摸屏的各电极流出的电流强度,将监控到的各电流强度的和值作为触摸屏输 出的检测信号强度。
14、 如权利要求 10至 13中任一项所述的装置, 其特征在于, 所述误触控 确定单元,具体用于当所述检测信号强度监控单元监控到的所述检测信号强度 大于第一设定阈值时, 则确定触摸屏发生误触控。
15、 如权利要求 10至 13中任一项所述的装置, 其特征在于, 所述误触控 确定单元,具体用于当所述检测信号强度监控单元监控到的所述检测信号强度 大于第二设定阈值且小于第一设定阈值时, 则确定触摸屏当前的触控点数目, 所述第二设定阈值小于第一设定阈值;当确定的触摸屏当前的触控点数目达到 设定的触控点阈值时, 则确定触摸屏发生误触控。
16、 如权利要求 15所述的装置, 其特征在于, 所述误触控确定单元, 具 体用于获取触摸屏中的传感器确定出的触控点位置信息;根据确定出的触控点 位置信息, 确定触摸屏当前的触控点数目。
17、 如权利要求 10至 16中任一所述的装置, 其特征在于, 还包括: 触控 响应恢复单元,用于当所述误触控确定单元确定触摸屏由发生误触控恢复到未 发生误触控时, 恢复触摸屏响应触控。
18、 如权利要求 17所述的装置, 其特征在于, 所述触控响应恢复单元, 具体用于当所述检测信号强度监控单元监控到的所述检测信号强度小于第二 设定阈值时, 确定触摸屏由发生误触控恢复到未发生误触控。
19、 一种移动终端, 其特征在于, 包括: 触摸屏、 以及如权利要求 10-18 中任一项所述的防止移动终端触摸屏误触控的装置。
20、 如权利要求 19所述的移动终端, 其特征在于, 所述触摸屏为电容触 摸屏。
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