WO2014023147A1 - Capacitance touch sensor, touch terminal, and anti-interference method and system thereof - Google Patents

Capacitance touch sensor, touch terminal, and anti-interference method and system thereof Download PDF

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WO2014023147A1
WO2014023147A1 PCT/CN2013/079149 CN2013079149W WO2014023147A1 WO 2014023147 A1 WO2014023147 A1 WO 2014023147A1 CN 2013079149 W CN2013079149 W CN 2013079149W WO 2014023147 A1 WO2014023147 A1 WO 2014023147A1
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interference
touch
charging
screen
frequency
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PCT/CN2013/079149
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French (fr)
Chinese (zh)
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阮滨
陈伟
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深圳市汇顶科技股份有限公司
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Priority to CN201210282263.7A priority Critical patent/CN102841715B/en
Priority to CN201210282263.7 priority
Application filed by 深圳市汇顶科技股份有限公司 filed Critical 深圳市汇顶科技股份有限公司
Publication of WO2014023147A1 publication Critical patent/WO2014023147A1/en

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    • GPHYSICS
    • G06COMPUTING; CALCULATING; 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
    • G06F3/044Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • GPHYSICS
    • G06COMPUTING; CALCULATING; 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
    • G06F3/04166Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
    • GPHYSICS
    • G06COMPUTING; CALCULATING; 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

Abstract

The present invention relates to the technical field of touch sensors, and provides an anti-interference method. The method comprises the following steps: determining whether a touch terminal enters a charging state, and if yes, performing subsequent steps; detecting interference; and when interference meeting a first preset condition is detected, selecting a touch-screen driver frequency to trip off an interference frequency. The present invention further provides an anti-interference system, a capacitance touch sensor, and a touch terminal. According to the present invention, the interference is detected after the touch terminal enters the charging state, and when the interference meeting the preset condition is detected, the touch-screen driver frequency is selected to trip off the interference frequency, so that an impact of common mode interference, generated when the touch terminal is connected to a charger for charging, on a touch operation can be reduced or eliminated.

Description

电容触摸传感器、触控终端及其抗干扰方法和系统  Capacitive touch sensor, touch terminal and anti-jamming method and system thereof 技术领域Technical field
本发明涉及触摸传感器技术领域,特别是涉及一种电容触摸传感器、触控终端及其抗干扰方法和系统。 The present invention relates to the field of touch sensor technologies, and in particular, to a capacitive touch sensor, a touch terminal, and an anti-interference method and system thereof.
背景技术Background technique
随着触控技术和移动终端技术的发展,越来越多的移动终端采用触控方式进行人机交互。目前移动终端所采用的触摸屏主要有电容式触摸屏和电阻式触摸屏两种,其中电容式触控屏以其良好的清晰度、透光率和触感,得到了越来越多用户的青睐。With the development of touch technology and mobile terminal technology, more and more mobile terminals use touch control for human-computer interaction. At present, the touch screens used by mobile terminals mainly include capacitive touch screens and resistive touch screens. Among them, capacitive touch screens have been favored by more and more users for their good definition, light transmittance and touch.
电容式触控移动终端在给用户带来良好使用体验的同时,也不可避免的存在一些问题,以手机为例,电容式触控手机在使用充电器对手机电池进行充电时,如果充电器没有进行良好的电磁兼容性(EMC,Electro Magnetic Compatibility)设计,充电电源所产生的共模干扰得不到有效抑制,这种共模干扰将导致触控失灵等无法操作手机的问题。Capacitive touch mobile terminals bring a good user experience, and there are inevitably some problems. Taking a mobile phone as an example, when a capacitive touch mobile phone uses a charger to charge a mobile phone battery, if the charger does not have Good electromagnetic compatibility (EMC, Electro Magnetic Compatibility design, the common mode interference generated by the charging power supply can not be effectively suppressed, this common mode interference will lead to the problem of unable to operate the mobile phone such as touch failure.
技术问题technical problem
本发明针对现有技术的上述缺陷,提供一种抗干扰方法和系统,能降低或消除触控终端连接充电器充电时所产生的共模干扰对触控操作的影响。The present invention is directed to the above-mentioned deficiencies of the prior art, and provides an anti-interference method and system, which can reduce or eliminate the influence of common mode interference generated when a touch terminal is connected to a charger for charging operation.
本发明还提供了一种电容触摸传感器和触控终端。The invention also provides a capacitive touch sensor and a touch terminal.
技术解决方案Technical solution
本发明采用的技术方案是:The technical solution adopted by the invention is:
一种抗干扰方法,所述方法包括如下步骤:An anti-interference method, the method comprising the following steps:
判断触控终端是否进入充电状态,若是则执行后续步骤;Determining whether the touch terminal enters a charging state, and if so, performing a subsequent step;
检测干扰;Detecting interference;
检测到符合第一预设条件的干扰时,挑选触摸屏驱动频率以跳开所述干扰频率。When the interference meeting the first preset condition is detected, the touch screen driving frequency is selected to jump off the interference frequency.
本发明还提供了一种抗干扰系统,所述系统包括:The invention also provides an anti-interference system, the system comprising:
充电状态判断单元,用于判断触控终端是否进入充电状态;a charging state determining unit, configured to determine whether the touch terminal enters a charging state;
干扰检测单元,用于检测干扰;An interference detecting unit for detecting interference;
干扰判断单元,用于判断检测到的干扰与第一预设条件和第三预设条件是否相符;The interference judging unit is configured to determine whether the detected interference is consistent with the first preset condition and the third preset condition;
跳频控制单元,用于在检测到符合第一预设条件和第三预设条件的干扰时,挑选触摸屏驱动频率以跳开所述干扰频率。The frequency hopping control unit is configured to select a touch screen driving frequency to jump off the interference frequency when detecting interference corresponding to the first preset condition and the third preset condition.
一种电容触摸传感器,包括触摸控制器,所述触摸控制器包括前述的抗干扰系统。A capacitive touch sensor includes a touch controller including the aforementioned anti-interference system.
一种触控终端,所述触控终端包括主控芯片,所述触控终端还包括前述的电容触摸传感器;A touch terminal includes a main control chip, and the touch terminal further includes the foregoing capacitive touch sensor;
所述主控芯片包括充电通知单元、充电控制单元和干扰通知判断单元,The main control chip includes a charging notification unit, a charging control unit, and an interference notification determining unit.
所述充电通知单元用于在触控终端与充电器连接并对触控终端的电池进行充电时通知触摸控制器进入充电模式,所述触摸控制器的充电状态判断单元在接收到所述进入充电模式的通知时判断触控终端是否进入充电状态;The charging notification unit is configured to notify the touch controller to enter a charging mode when the touch terminal is connected to the charger and charge the battery of the touch terminal, and the charging state determining unit of the touch controller receives the incoming charging Determine whether the touch terminal enters the charging state when the mode is notified;
所述充电控制单元用于在所述干扰通知判断单元判断有所述干扰通知时,关闭充电或者将充电电流降低,或者在屏幕状态检测单元检测到用户对屏幕的操作完毕后,重新开启充电或者恢复正常充电电流;The charging control unit is configured to: when the interference notification determining unit determines that the interference notification is present, turn off charging or reduce the charging current, or restart the charging after the screen state detecting unit detects that the user’s operation on the screen is completed; Restore normal charging current;
所述干扰通知判断单元用于在读取用户在屏幕上的触摸坐标前,判断是否有所述干扰通知,所述干扰通知由所述干扰通知发送单元发送给干扰通知判断单元。The interference notification determining unit is configured to determine whether there is the interference notification before reading the touch coordinates of the user on the screen, and the interference notification is sent by the interference notification sending unit to the interference notification determining unit.
有益效果Beneficial effect
本发明通过在触控终端进入充电状态后检测干扰,在检测到符合预设条件的干扰时,挑选触摸屏驱动频率以跳开干扰频率,从而可以降低或消除触控终端连接充电器充电时所产生的共模干扰对触控操作的影响,使用户在触控终端充电的状态下也可以良好的操控触摸屏。 The invention detects the interference after the touch terminal enters the charging state, and when detecting the interference that meets the preset condition, selects the touch screen driving frequency to jump off the interference frequency, thereby reducing or eliminating the generation of the touch terminal when the charger is charged. The influence of the common mode interference on the touch operation enables the user to manipulate the touch screen well in the state where the touch terminal is charged.
附图说明DRAWINGS
图1为本发明实施例1的抗干扰方法流程图;1 is a flowchart of an anti-interference method according to Embodiment 1 of the present invention;
图2为本发明实施例1中步骤S103的详细实现流程图;2 is a flowchart showing a detailed implementation of step S103 in Embodiment 1 of the present invention;
图3为本发明实施例2的抗干扰方法流程图;3 is a flowchart of an anti-interference method according to Embodiment 2 of the present invention;
图4为本发明实施例3的抗干扰方法流程图;4 is a flowchart of an anti-interference method according to Embodiment 3 of the present invention;
图5为本发明实施例4的抗干扰方法流程图;5 is a flowchart of an anti-interference method according to Embodiment 4 of the present invention;
图6为本发明实施例5的抗干扰系统结构框图;6 is a structural block diagram of an anti-interference system according to Embodiment 5 of the present invention;
图7为本发明实施例6的抗干扰系统结构框图;7 is a structural block diagram of an anti-interference system according to Embodiment 6 of the present invention;
图8为本发明实施例8的触控终端结构框图。FIG. 8 is a structural block diagram of a touch terminal according to Embodiment 8 of the present invention.
本发明的实施方式Embodiments of the invention
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合附图及实施例,对本发明进行进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
本发明实施例提供了一种抗干扰方法,该方法包括如下步骤:An embodiment of the present invention provides an anti-interference method, and the method includes the following steps:
判断触控终端是否进入充电状态,若是则执行后续步骤;Determining whether the touch terminal enters a charging state, and if so, performing a subsequent step;
检测干扰;Detecting interference;
检测到符合第一预设条件的干扰时,挑选触摸屏驱动频率以跳开干扰频率。When the interference meeting the first preset condition is detected, the touch screen driving frequency is selected to jump off the interference frequency.
本发明实施例还提供了一种抗干扰系统,该系统包括:The embodiment of the invention further provides an anti-interference system, the system comprising:
充电状态判断单元,用于判断触控终端是否进入充电状态;a charging state determining unit, configured to determine whether the touch terminal enters a charging state;
干扰检测单元,用于检测干扰;An interference detecting unit for detecting interference;
干扰判断单元,用于判断检测到的干扰与第一预设条件、第二预设条件、第三预设条件是否相符;The interference determining unit is configured to determine whether the detected interference is consistent with the first preset condition, the second preset condition, and the third preset condition;
跳频控制单元,用于在检测到符合第一预设条件和第三预设条件的干扰时,挑选触摸屏驱动频率以跳开干扰频率。The frequency hopping control unit is configured to select the touch screen driving frequency to jump off the interference frequency when detecting the interference that meets the first preset condition and the third preset condition.
本发明实施例还提供了一种电容触摸传感器,包括触摸控制器,该触摸控制器包括上述抗干扰系统。Embodiments of the present invention also provide a capacitive touch sensor including a touch controller including the above-described anti-interference system.
本发明实施例还提供了一种触控终端,包括主控芯片,还包括上述电容触摸传感器;The embodiment of the invention further provides a touch terminal, comprising a main control chip, and further comprising the above capacitive touch sensor;
主控芯片包括充电通知单元、充电控制单元和干扰通知判断单元,The main control chip includes a charging notification unit, a charging control unit, and an interference notification determining unit.
充电通知单元用于在触控终端与充电器连接并对触控终端的电池进行充电时通知触摸控制器进入充电模式,触摸控制器的充电状态判断单元在接收到进入充电模式的通知时判断触控终端是否进入充电状态;The charging notification unit is configured to notify the touch controller to enter the charging mode when the touch terminal is connected to the charger and charge the battery of the touch terminal, and the charging state determining unit of the touch controller determines to touch when receiving the notification of entering the charging mode Controlling whether the terminal enters a charging state;
充电控制单元用于在干扰通知判断单元判断有干扰通知时,关闭充电或者将充电电流降低,或者在屏幕状态检测单元检测到用户对屏幕的操作完毕后,重新开启充电或者恢复正常充电电流;The charging control unit is configured to: when the interference notification determining unit determines that there is an interference notification, turn off the charging or reduce the charging current, or restart the charging or restore the normal charging current after the screen state detecting unit detects that the operation of the screen by the user is completed;
干扰通知判断单元用于在读取用户在屏幕上的触摸坐标前,判断是否有干扰通知,干扰通知由干扰通知发送单元发送给干扰通知判断单元。The interference notification determining unit is configured to determine whether there is an interference notification before reading the touch coordinates of the user on the screen, and the interference notification is sent by the interference notification sending unit to the interference notification determining unit.
本发明实施例中的触控终端可以是手机、平板电脑等触控类移动终端。The touch terminal in the embodiment of the present invention may be a touch type mobile terminal such as a mobile phone or a tablet computer.
本发明实施例通过在触控终端进入充电状态后检测干扰,在检测到符合预设条件的干扰时,挑选触摸屏驱动频率以跳开干扰频率,从而可以降低或消除触控终端连接充电器充电时所产生的共模干扰对触控操作的影响,使用户在触控终端充电的状态下也可以良好的操控触摸屏。In the embodiment of the present invention, when the touch terminal detects the interference after entering the charging state, when the interference meeting the preset condition is detected, the touch screen driving frequency is selected to jump off the interference frequency, thereby reducing or eliminating the charging of the touch terminal when the charger is connected. The effect of the generated common mode interference on the touch operation enables the user to manipulate the touch screen well in the state where the touch terminal is charged.
实施例1:Example 1:
请参阅图1所示,为本发明实施例1的抗干扰方法流程图。该方法包括如下步骤:Please refer to FIG. 1 , which is a flowchart of an anti-interference method according to Embodiment 1 of the present invention. The method comprises the following steps:
步骤S101:判断触控终端是否进入充电状态,若是则执行后续步骤。Step S101: determining whether the touch terminal enters a charging state, and if yes, performing a subsequent step.
该步骤可通过触控终端的主控芯片与电容触摸传感器中的触摸控制器配合实现,触摸控制器为电容触摸传感器中控制触摸的芯片。在触控终端与充电器连接后,充电器通过电源对触控终端的电池进行充电,此时主控芯片通知触摸控制器进入充电模式。触摸控制器接到进入充电模式的通知后检测相应的接口标志,判断触控终端是否进入充电状态。例如,触控终端连接充电器进行充电时主控芯片会将相应的命令值(也即特定的数值)存入特定的寄存器,触摸控制器会检测这些寄存器中是否存放有开启跳频检测的命令值,这些寄存器中的存放的命令值就是相应的接口标志。The step can be implemented by a touch control controller in the capacitive touch sensor. The touch controller is a touch sensitive chip in the capacitive touch sensor. After the touch terminal is connected to the charger, the charger charges the battery of the touch terminal through the power source, and the main control chip notifies the touch controller to enter the charging mode. After receiving the notification of entering the charging mode, the touch controller detects the corresponding interface flag to determine whether the touch terminal enters the charging state. For example, when the touch terminal is connected to the charger for charging, the main control chip stores the corresponding command value (that is, a specific value) into a specific register, and the touch controller detects whether or not the command for turning on the frequency hopping detection is stored in the registers. Value, the command value stored in these registers is the corresponding interface flag.
步骤S102:检测干扰。Step S102: detecting interference.
该步骤通过触摸控制器检测是否有充电导致的共模干扰存在,具体实现时,可通过检测采样数据的差异性来判断共模干扰的有无和强弱,采样数据是指触摸控制器的采样电路采集到的电容触摸传感器上的电容感应数据。检测一次并计算完毕的时间在3ms左右。为了提高检测的准确度,可适当增加对当前频率的检测次数。This step detects whether there is common mode interference caused by charging through the touch controller. In specific implementation, the presence or absence and strength of the common mode interference can be judged by detecting the difference of the sampled data, and the sampled data refers to the sampling of the touch controller. The capacitive sensing data on the capacitive touch sensor collected by the circuit. The time of detection and calculation is about 3ms. In order to improve the accuracy of the detection, the number of detections of the current frequency can be appropriately increased.
步骤S103:检测到符合第一预设条件的干扰时,挑选触摸屏驱动频率以跳开所述干扰频率。Step S103: When detecting the interference that meets the first preset condition, select the touch screen driving frequency to jump off the interference frequency.
该步骤在触摸控制器发现共模干扰特征出现,也即检测到共模干扰时,会判断该共模干扰是否符合第一预设条件,若符合则通过跳频以避开该共模干扰。详细步骤如图2所示,图2为本发明实施例1中步骤S103的详细实现流程图,步骤S103进一步包括如下步骤:In this step, when the touch controller finds that the common mode interference feature appears, that is, when the common mode interference is detected, it is determined whether the common mode interference meets the first preset condition, and if it is met, the common mode interference is avoided by frequency hopping. The detailed steps are shown in FIG. 2. FIG. 2 is a detailed implementation flowchart of step S103 in Embodiment 1 of the present invention, and step S103 further includes the following steps:
步骤A1:判断检测到的干扰与第一预设条件是否相符。Step A1: Determine whether the detected interference matches the first preset condition.
该步骤中,第一预设条件是指根据触控终端通过充电器充电时存在的对触控操作有影响的共模干扰而设定的条件,对触控操作有影响的共模干扰一般被认定为是较强的共模干扰。由于干扰的存在并且短时间内变化很大,所以采样数据必定会相差很大,因此可以根据采样数据的差距值设定第一预设条件,例如设定一差距值15作为采样数据差距值的下限,并以此作为第一预设条件,当实际检测到的采样数据差距值超过15时就判断为存在符合第一预设条件的干扰。第一预设条件为第一次跳频的条件。第一预设条件不是固定不变的,会在检测过程中根据实际情况依据一定的判断机制而改变,例如可以在检测到的采样数据最小差距值上累加一个特定数值作为下次的第一预设条件(也即判断阈值),或者当检测到的采样数据最小差距值本身就很大时,直接取该最小差距值作为下次的第一预设条件。In this step, the first preset condition is a condition that is set according to a common mode interference that affects the touch operation when the touch terminal is charged by the charger, and the common mode interference that affects the touch operation is generally It is considered to be a strong common mode interference. Due to the existence of interference and great change in a short time, the sampled data must be very different, so the first preset condition can be set according to the difference value of the sampled data, for example, setting a gap value of 15 as the sampled data gap value. The lower limit is used as the first preset condition. When the actually detected sample data gap value exceeds 15, it is determined that there is interference corresponding to the first preset condition. The first preset condition is the condition of the first frequency hopping. The first preset condition is not fixed, and may be changed according to a certain judgment mechanism according to actual conditions in the detection process. For example, a specific value may be added to the minimum difference value of the detected sample data as the next first pre-preparation. The condition (that is, the judgment threshold) is set, or when the minimum difference value of the detected sample data itself is large, the minimum difference value is directly taken as the next first preset condition.
步骤A2:检测到的干扰与第一预设条件相符时,扫描检测到的干扰频率。Step A2: When the detected interference matches the first preset condition, the detected interference frequency is scanned.
当步骤A1中检测到符合第一预设条件的共模干扰时,触摸控制器会扫描当前的共模干扰频率。When the common mode interference corresponding to the first preset condition is detected in step A1, the touch controller scans the current common mode interference frequency.
步骤A3:根据扫描到的干扰频率,选择合适的触摸屏驱动频率以跳开所述干扰频率。Step A3: Select an appropriate touch screen driving frequency to jump off the interference frequency according to the scanned interference frequency.
通过步骤A2扫描出当前的共模干扰频率后,触摸控制器从自身的频率库中选择出合适的触摸屏驱动频率以跳开当前共模干扰频率。After scanning the current common mode interference frequency by step A2, the touch controller selects a suitable touch screen driving frequency from its own frequency library to jump off the current common mode interference frequency.
本实施例先检测是否有干扰存在,若有则通过跳频避开干扰,从而降低或消除触控终端连接充电器充电时所产生的共模干扰对触控操作的影响。In this embodiment, it is first detected whether interference exists, and if so, the interference is avoided by frequency hopping, thereby reducing or eliminating the influence of common mode interference generated by the touch terminal connected to the charger during charging on the touch operation.
实施例2:Example 2:
请参阅图3所示,为本发明实施例2的抗干扰方法流程图。该实施例与实施例1最主要的区别是,该实施例在进入充电状态后,并不马上检测干扰,而是当用户想要进行触控操作时才开始检测干扰。该方法包括如下步骤:Please refer to FIG. 3, which is a flowchart of an anti-interference method according to Embodiment 2 of the present invention. The most important difference between this embodiment and Embodiment 1 is that the embodiment does not detect interference immediately after entering the charging state, but starts detecting interference when the user wants to perform a touch operation. The method comprises the following steps:
步骤S201:判断触控终端是否进入充电状态。若是,执行步骤S202;否则,结束此次进程,继续执行触控终端主流程中的其他程序。Step S201: Determine whether the touch terminal enters a charging state. If yes, go to step S202; otherwise, end the process and continue to execute other programs in the main process of the touch terminal.
步骤S202:判断屏幕是否被激活或者用户是否操作屏幕。若是,执行步骤S203;否则,结束此次进程,继续执行触控终端主流程中的其他程序。Step S202: It is judged whether the screen is activated or whether the user operates the screen. If yes, go to step S203; otherwise, end the process and continue to execute other programs in the main process of the touch terminal.
充电过程中,在用户不需要进行触控操作时,可以不进行干扰检测,不会影响正常充电;当用户需要进行触控操作时,则需要进行干扰检测。因此,本步骤基于这一实际需求,首先判断用户是否有触控操作的需求。触控终端一般在一段时间无屏幕操作后会关闭屏幕以节电,因此本步骤可通过触摸控制器判断屏幕是否被激活或者用户是否操作屏幕进而判断用户是否有触控操作需求,在屏幕关闭后可判断屏幕是否被激活,而在屏幕未关闭时则直接通过判断用户是否操作屏幕来判断用户是否有触控操作的需求。During the charging process, when the user does not need to perform the touch operation, the interference detection may not be performed, and the normal charging is not affected; when the user needs to perform the touch operation, the interference detection is required. Therefore, this step is based on this actual requirement, first determining whether the user has a touch operation requirement. The touch terminal generally turns off the screen to save power after a period of no screen operation, so this step can determine whether the screen is activated by the touch controller or whether the user operates the screen to determine whether the user has touch operation requirements, after the screen is closed. It can be judged whether the screen is activated, and when the screen is not closed, it is directly determined by judging whether the user operates the screen to determine whether the user has a touch operation requirement.
步骤S203:检测干扰。Step S203: detecting interference.
步骤S204:判断检测到的干扰与第一预设条件是否相符。若是,执行步骤S205;否则,结束此次进程,继续执行触控终端主流程中的其他程序。Step S204: It is determined whether the detected interference matches the first preset condition. If yes, go to step S205; otherwise, end the process and continue to execute other programs in the main process of the touch terminal.
步骤S205:扫描检测到的干扰频率。Step S205: Scan the detected interference frequency.
步骤S206:根据扫描到的干扰频率,选择合适的触摸屏驱动频率以跳开所述干扰频率。Step S206: Select an appropriate touch screen driving frequency to jump off the interference frequency according to the scanned interference frequency.
其中,步骤S201、S203~S206的具体实现与实施例1类似,此处不赘述。The specific implementation of the steps S201 and S203 to S206 is similar to that of the first embodiment, and details are not described herein.
本实施例在进入充电状态后,当用户想要进行触控操作时才开始检测干扰,避免了不必要的检测,更符合实际应用需求,效率更高。After the user enters the charging state, the user starts to detect the interference when the user wants to perform the touch operation, avoids unnecessary detection, and is more in line with actual application requirements, and has higher efficiency.
实施例3:Example 3:
请参阅图4所示,为本发明实施例3的抗干扰方法流程图。该实施例与实施例1最主要的区别是,该实施例在选择到合适频率跳频后,重新对干扰信号进行检测,若发现还是有疑似信号,则暂时关闭充电器充电功能,或是将充电电流降低。Please refer to FIG. 4, which is a flowchart of an anti-interference method according to Embodiment 3 of the present invention. The most important difference between this embodiment and the embodiment 1 is that the embodiment re-detects the interference signal after selecting the appropriate frequency hopping. If the suspect signal is found, the charger charging function is temporarily turned off, or The charging current is reduced.
步骤S301:判断触控终端是否进入充电状态。若是,执行步骤S302;否则,结束此次进程,继续执行触控终端主流程中的其他程序。Step S301: Determine whether the touch terminal enters a charging state. If yes, go to step S302; otherwise, end the process and continue to execute other programs in the main process of the touch terminal.
步骤S302:检测干扰。Step S302: detecting interference.
步骤S303:判断检测到的干扰与第一预设条件是否相符。若是,执行步骤S205;否则,结束此次进程,继续执行触控终端主流程中的其他程序。Step S303: Determine whether the detected interference matches the first preset condition. If yes, go to step S205; otherwise, end the process and continue to execute other programs in the main process of the touch terminal.
步骤S304:扫描检测到的干扰频率。Step S304: Scan the detected interference frequency.
步骤S305:根据扫描到的干扰频率,选择合适的触摸屏驱动频率以跳开所述干扰频率。Step S305: Select an appropriate touch screen driving frequency to jump off the interference frequency according to the scanned interference frequency.
其中,步骤S301~S305的具体实现与实施例1类似,此处不赘述。The specific implementation of the steps S301 to S305 is similar to that of the first embodiment, and details are not described herein.
步骤S306:检测干扰。Step S306: detecting interference.
在前面的步骤中检测干扰并选取最优频率(干扰最小)跳频后,存在两种情况:After detecting the interference in the previous step and selecting the optimal frequency (minimum interference) frequency hopping, there are two cases:
1、最优频率上的干扰本身也很大,使得用户不能正常操作触摸屏或操作困难,一般表现为出现触摸不准、触点漂移等现象。1. The interference on the optimal frequency is also very large, so that the user cannot operate the touch screen normally or the operation is difficult. Generally, the phenomenon of touch inaccuracy and contact drift occurs.
2、在检测干扰的时候,由于干扰忽大忽小的不稳定性,造成了检测存在一定的不确定性,在最优频率上检测时干扰较小,但在用户操作触摸屏时干扰有可能变大。2. When detecting interference, due to the instability of the disturbance, the detection has certain uncertainty, and the interference is small when detecting at the optimal frequency, but the interference may change when the user operates the touch screen. Big.
基于以上两点,在进行一次跳频之后,再重新对干扰信号进行检测。此时,属于跳频后再次检测干扰,同样是通过触摸控制器进行检测。Based on the above two points, after performing a frequency hopping, the interference signal is re-detected. At this time, the interference is detected again after the frequency hopping, and the detection is also performed by the touch controller.
步骤S307:判断检测到的干扰与第二预设条件是否相符。若是,执行步骤S308;否则,结束此次进程,继续执行触控终端主流程中的其他程序。Step S307: Determine whether the detected interference matches the second preset condition. If yes, go to step S308; otherwise, end the process and continue to execute other programs in the main process of the touch terminal.
该步骤是判断再次检测到的共模干扰是否符合第二预设条件。第二预设条件为发送干扰通知给主控芯片的条件,例如设定一差距值15作为采样数据差距值的下限,并以此作为第二预设条件。当触摸控制器发现采样数据的差异仍然明显、符合第二预设条件时,说明干扰仍很大,这种状况下对操作屏幕有影响,需要主控芯片采取相应的措施防止干扰影响。第二预设条件为固定条件,设定好后可不再进行改变。This step is to determine whether the re-detected common mode interference meets the second preset condition. The second preset condition is a condition for transmitting the interference notification to the main control chip, for example, setting a gap value 15 as a lower limit of the sample data gap value, and using this as the second preset condition. When the touch controller finds that the difference between the sampled data is still obvious and meets the second preset condition, the interference is still large. In this case, the operation screen has an influence, and the main control chip needs to take corresponding measures to prevent the interference. The second preset condition is a fixed condition, and the setting can be no longer changed.
步骤S308:发送干扰通知。Step S308: Send an interference notification.
当检测到符合第二预设条件的共模干扰时,触摸控制器在相应的接口发送干扰通知给主控芯片。在发送干扰通知之后,还可以根据干扰的大小来判断是否再次跳频,例如判断检测到的干扰与第三预设条件是否相符;检测到的干扰与第三预设条件相符时,扫描检测到的干扰频率,并根据扫描到的干扰频率,选择合适的触摸屏驱动频率以跳开干扰频率。第三预设条件为再次跳频的条件,是在第一预设条件的基础上生成的,第三预设条件所设定的采样数据差距值会在第一预设条件的采样数据差距值的基础上根据一定的判断机制进行提高,例如第一预设条件设定的采样数据的差距值的下限为15,第三预设条件设定的采样数据的差距值的下限为30,在检测到的干扰超过30才会进行再次跳频。When the common mode interference meeting the second preset condition is detected, the touch controller sends an interference notification to the main control chip at the corresponding interface. After the interference notification is sent, it is also possible to determine whether to hop again according to the magnitude of the interference, for example, determining whether the detected interference matches the third preset condition; when the detected interference matches the third preset condition, the scan detects The interference frequency, and according to the frequency of the interference, select the appropriate touch screen drive frequency to jump off the interference frequency. The third preset condition is that the condition of the frequency hopping again is generated on the basis of the first preset condition, and the sample data gap value set by the third preset condition is the sample data gap value of the first preset condition. Based on a certain judgment mechanism, for example, the lower limit of the difference value of the sampled data set by the first preset condition is 15, and the lower limit of the difference value of the sampled data set by the third preset condition is 30. If the interference exceeds 30, the frequency hopping will be performed again.
步骤S309:关闭充电或者将充电电流降低。Step S309: Turn off the charging or lower the charging current.
在存在较大干扰时,会影响触控操作。此时需要采取一定的措施以使触控操作能顺利进行。该步骤中,通过主控芯片控制关闭充电或者将充电电流降低,从而不影响用户的操作需求。若选择降低充电电流,则一般可直接将充电电流降至最低,使对触控操作的影响降至最小。When there is a large interference, it will affect the touch operation. At this point, certain measures need to be taken to make the touch operation smoothly. In this step, the main control chip controls to turn off the charging or reduce the charging current, so as not to affect the user's operation requirements. If you choose to reduce the charging current, you can generally minimize the charging current, so that the impact on the touch operation is minimized.
步骤S308之后,也可以不直接关闭充电或者将充电电流降低,而是在主控芯片读取用户在屏幕上的触摸坐标前,判断是否有干扰通知,若有,则说明干扰仍较强,关闭充电或者将充电电流降低。因为若是通过判断屏幕是否被激活进行的干扰检测,用户可能在激活屏幕后并未进行实际的触控操作,所以此时仍可以不采取避开干扰的措施,而是等待用户有实际的触控操作、主控芯片需要读取触摸坐标时,再关闭充电或者将充电电流降低。这样避免了不必要的避开干扰举措,更符合实际应用需求,效率更高。After step S308, the charging may not be directly turned off or the charging current may be reduced. Instead, before the main control chip reads the touch coordinates of the user on the screen, it is determined whether there is an interference notification. If there is, the interference is still strong, and the shutdown is performed. Charge or reduce the charging current. Because if the interference detection is performed by judging whether the screen is activated, the user may not perform the actual touch operation after the screen is activated, so the user may still avoid the interference, but wait for the user to have the actual touch. When the operation and main control chip need to read the touch coordinates, turn off the charging or reduce the charging current. This avoids unnecessary avoidance of interference measures, is more in line with practical application requirements, and is more efficient.
在步骤S309之后,结束此次进程,继续执行触控终端主流程中的其他程序。或者,还可以返回执行步骤S302或者步骤S306,仍然检测干扰和跳频。在关闭充电或者降低充电电流后,负载发生变化,干扰相对会减小很多,此时进行检测跳频,成功的几率会大大增加,也即跳开干扰的可能性增加。经测试,在不充电状态下进行检测跳频的成功率比充电状态下增多一倍以上。After step S309, the process ends and the other programs in the main process of the touch terminal are executed. Alternatively, it is also possible to return to step S302 or step S306 to still detect interference and frequency hopping. After the charging is turned off or the charging current is reduced, the load changes, and the interference is relatively reduced. At this time, the frequency hopping is detected, and the probability of success is greatly increased, that is, the probability of jumping out is increased. After testing, the success rate of detecting frequency hopping in the uncharged state is more than doubled compared with the state of charge.
该实施例在选择到合适频率跳频后,重新进行检测,若发现还是有疑似信号,则暂时关闭充电器充电功能,或是将充电电流降低,这样在跳频没有跳成功的情况下,可通过关闭充电器充电功能或是将充电电流降低的途径避免干扰的影响。In this embodiment, after selecting the appropriate frequency hopping frequency, the detection is performed again. If it is found that there is still a suspect signal, the charging function of the charger is temporarily turned off, or the charging current is lowered, so that the frequency hopping is successful without jumping. Avoid the effects of interference by turning off the charger charging function or by reducing the charging current.
实施例4:Example 4:
请参阅图5所示,为本发明实施例4的抗干扰方法流程图。该实施例与实施例3最主要的区别是,该实施例在关闭充电或者将充电电流降低后,增加对用户是否操作完毕的判断,若用户操作完毕则重新开启充电或者恢复正常充电电流。该方法中的步骤S401~S409与实施例3中的步骤S301~S309类似,此处不赘述。下面从步骤S410开始描述该方法的具体实现:Please refer to FIG. 5, which is a flowchart of an anti-interference method according to Embodiment 4 of the present invention. The most important difference between this embodiment and Embodiment 3 is that this embodiment increases the judgment of whether the user has finished operating after turning off the charging or lowering the charging current, and restarts charging or restores the normal charging current if the user finishes the operation. Steps S401 to S409 in the method are similar to steps S301 to S309 in the third embodiment, and are not described herein. The specific implementation of the method is described below starting from step S410:
步骤S410:判断用户对屏幕的操作是否完毕。若是,则执行步骤S411;否则,返回执行步骤S402。Step S410: Determine whether the user's operation on the screen is completed. If yes, go to step S411; otherwise, go back to step S402.
该步骤通过触摸控制器判断用户对屏幕的操作是否完毕。This step determines whether the user's operation on the screen is completed by the touch controller.
步骤S411:重新开启充电或者恢复正常充电电流。Step S411: Re-energize or resume normal charging current.
该步骤在触摸控制器检测到用户对屏幕的操作完毕后,通知主控芯片重新开启充电或者恢复正常充电电流。After the touch controller detects that the user's operation on the screen is completed, the step is notified to the main control chip to restart charging or restore the normal charging current.
由于各用户操作的场合、习惯不同,操作完毕的时间不能一概而论。在触摸屏中,当用户无操作一段时间后(例如10s),触摸控制器的工作状态会改变,由正常模式进入省电(Low Power)模式,因此可以通过触摸控制器检测触摸控制器的工作状态,检测到触摸控制器的工作状态为Low Power模式时,触摸控制器通知主控芯片重新开启充电或者恢复正常充电电流。这种方式既节省触摸控制器另外计时的时间和空间,又可将用户无操作的时间变成可配置的参数。Due to the different occasions and habits of each user operation, the time of completion of the operation cannot be generalized. In the touch screen, when the user has not operated for a period of time (for example, 10s), the working state of the touch controller will change, and the normal mode enters power saving (Low Power) mode, so the touch controller can be used to detect the working state of the touch controller, and the working state of the touch controller is detected as Low. In Power mode, the touch controller notifies the master chip to re-energize or resume normal charging current. This approach saves both the time and space of the touch controller's additional timing, and turns the user's inoperative time into a configurable parameter.
在步骤S411之后,返回执行步骤S401,重复上述的检测跳频流程。After step S411, the process returns to step S401, and the above-described detection frequency hopping process is repeated.
本实施例在用户操作完屏幕后重新充电或者恢复正常充电电流,使正常充电能够及时恢复,而且恢复正常充电的时间可以由配置命令控制,增加了自由度和可控性。In this embodiment, after the user finishes operating the screen, the user recharges or restores the normal charging current, so that the normal charging can be resumed in time, and the time for restoring the normal charging can be controlled by the configuration command, which increases the degree of freedom and controllability.
实施例3和实施例4所提供的抗干扰方法,从检测跳频到关闭充电的过程,最优的情况下可以在600ms内实现,最长在2.5s内也可以完成,速度快,效率高。The anti-interference method provided in Embodiment 3 and Embodiment 4 can be implemented in 600 ms from the detection of frequency hopping to the shutdown charging, and can be completed in a maximum of 2.5 s, and the speed is fast and the efficiency is high. .
实施例5:Example 5:
请参阅图6所示,为本发明实施例5的抗干扰系统结构框图。该抗干扰系统1包括:Please refer to FIG. 6, which is a structural block diagram of an anti-interference system according to Embodiment 5 of the present invention. The anti-interference system 1 includes:
充电状态判断单元11,与干扰检测单元12连接,用于判断触控终端是否进入充电状态,并在触控终端进入充电状态时通知干扰检测单元12;The charging state determining unit 11 is connected to the interference detecting unit 12 for determining whether the touch terminal enters a charging state, and notifying the interference detecting unit 12 when the touch terminal enters the charging state;
干扰检测单元12,分别与充电状态判断单元11和干扰判断单元13连接,用于在接收到充电状态判断单元11发送的触控终端进入充电状态的通知后,检测干扰;The interference detecting unit 12 is connected to the charging state determining unit 11 and the interference determining unit 13 respectively, and is configured to detect interference after receiving the notification that the touch terminal sent by the charging state determining unit 11 enters the charging state;
干扰判断单元13,分别与干扰检测单元12和跳频控制单元14连接,用于判断干扰检测单元12检测到的干扰与第一预设条件和第三预设条件是否相符,在判断出符合第一预设条件和第三预设条件的干扰时,将结果通知跳频控制单元14;The interference judging unit 13 is connected to the interference detecting unit 12 and the frequency hopping control unit 14 respectively, and is configured to determine whether the interference detected by the interference detecting unit 12 is consistent with the first preset condition and the third preset condition, and is determined to meet the first When the interference of a preset condition and the third preset condition, the result is notified to the frequency hopping control unit 14;
跳频控制单元14,与干扰判断单元13连接,用于在接收到干扰判断单元13发送的存在符合第一预设条件和第三预设条件的干扰通知时,也即在检测到符合第一预设条件和第三预设条件的干扰时,挑选合适的触摸屏驱动频率以跳开干扰频率。The frequency hopping control unit 14 is connected to the interference determining unit 13 for receiving the interference notification that is consistent with the first preset condition and the third preset condition, which is sent by the interference determining unit 13, that is, when the first compliance condition is detected. When the preset condition and the third preset condition interfere, select a suitable touch screen driving frequency to jump off the interference frequency.
上述各单元的具体工作方法与前述实施例1~4中的方法类似,此处不再描述。The specific working methods of the above units are similar to those in the foregoing Embodiments 1 to 4, and will not be described here.
本实施例先检测是否有干扰存在,若有则通过跳频避开干扰,从而降低或消除触控终端连接充电器充电时所产生的共模干扰对触控操作的影响。本实施例的抗干扰系统1可用于手机、平板电脑等各类触控移动终端。In this embodiment, it is first detected whether interference exists, and if so, the interference is avoided by frequency hopping, thereby reducing or eliminating the influence of common mode interference generated by the touch terminal connected to the charger during charging on the touch operation. The anti-interference system 1 of the embodiment can be used for various types of touch mobile terminals such as mobile phones and tablet computers.
实施例6:Example 6
请参阅图7所示,为本发明实施例6的抗干扰系统结构框图。本实施例与实施例5相同的部分此处不再赘述,只描述与实施例5不同的部分:Please refer to FIG. 7, which is a structural block diagram of an anti-interference system according to Embodiment 6 of the present invention. The same parts of the embodiment as those of the embodiment 5 are not described herein again, and only the parts different from the embodiment 5 are described:
本实施例中,跳频控制单元14包括:In this embodiment, the frequency hopping control unit 14 includes:
干扰频率扫描模块141,分别与干扰判断单元13和跳频模块142连接,用于在检测到的干扰与第一预设条件和第三预设条件相符时,也即在接收到干扰判断单元13发送的存在符合第一预设条件和第三预设条件的干扰通知时,扫描检测到的干扰频率,并将该干扰频率发送给跳频模块142;The interference frequency scanning module 141 is respectively connected to the interference determining unit 13 and the frequency hopping module 142, and is configured to receive the interference determining unit 13 when the detected interference matches the first preset condition and the third preset condition. When the presence of the interference notification that meets the first preset condition and the third preset condition is performed, the detected interference frequency is scanned, and the interference frequency is sent to the frequency hopping module 142;
跳频模块142,与干扰频率扫描模块141连接,用于根据干扰频率扫描模块141扫描到的干扰频率,选择合适的触摸屏驱动频率以跳开干扰频率。The frequency hopping module 142 is connected to the interference frequency scanning module 141 for selecting an appropriate touch screen driving frequency to jump off the interference frequency according to the interference frequency scanned by the interference frequency scanning module 141.
跳频控制单元14除了与干扰判断单元13连接外,还与干扰检测单元12连接,在跳频模块142实施第一次跳频后通知干扰检测单元12再次检测干扰。The frequency hopping control unit 14 is connected to the interference detecting unit 12 in addition to the interference determining unit 13, and notifies the interference detecting unit 12 to detect the interference again after the frequency hopping module 142 performs the first frequency hopping.
本实施例中的所述干扰判断单元还用于判断检测到的干扰与第二预设条件是否相符。The interference determining unit in this embodiment is further configured to determine whether the detected interference matches the second preset condition.
本实施例的抗干扰系统1还包括:The anti-interference system 1 of this embodiment further includes:
屏幕状态检测单元15,与干扰检测单元12连接,用于检测屏幕是否被激活、用户是否操作屏幕或者用户对屏幕的操作是否完毕,并将检测结果发送给干扰检测单元12以及触控终端中的主控芯片;The screen state detecting unit 15 is connected to the interference detecting unit 12 for detecting whether the screen is activated, whether the user operates the screen or whether the user's operation on the screen is completed, and sends the detection result to the interference detecting unit 12 and the touch terminal. Master chip;
干扰通知发送单元16,与干扰判断单元13连接,用于在跳频模块142挑选触摸屏驱动频率以跳开干扰频率后、干扰检测单元13检测到符合第二预设条件的干扰时,发送干扰通知给触控终端中的主控芯片;The interference notification sending unit 16 is connected to the interference determining unit 13 for transmitting the interference notification when the frequency hopping module 142 selects the touch screen driving frequency to jump off the interference frequency and the interference detecting unit 13 detects the interference that meets the second preset condition. Giving the master chip in the touch terminal;
干扰检测单元13在用于在充电状态判断单元11判断触控终端进入充电状态、或者屏幕状态检测单元15检测到屏幕被激活、或者检测到用户操作屏幕、或者检测到用户对屏幕的操作完毕时、或者跳频模块142挑选触摸屏驱动频率以跳开干扰频率后检测干扰。The interference detecting unit 13 is used when the charging state determining unit 11 determines that the touch terminal enters the charging state, or the screen state detecting unit 15 detects that the screen is activated, or detects that the user operates the screen, or detects that the user's operation on the screen is completed. Or the frequency hopping module 142 selects the touch screen driving frequency to detect the interference after jumping off the interference frequency.
上述各单元或模块的具体工作方法与前述实施例1~4中的方法类似,此处不再描述。The specific working methods of the above units or modules are similar to those in the foregoing embodiments 1 to 4 and will not be described here.
本实施例在进入充电状态后,当用户想要进行触控操作时才开始检测干扰,避免了不必要的检测,更符合实际应用需求,效率更高;在选择到合适频率跳频后,重新进行检测,若发现还是有疑似信号,则通知主控芯片以采取一定的措施,例如关闭充电器充电功能,或是将充电电流降低,这样在跳频没有跳成功的情况下,可通过关闭充电器充电功能或是将充电电流降低的途径避免干扰的影响;在用户操作完屏幕后通知主控芯片重新充电或者恢复正常充电电流,使正常充电能够及时恢复。而且恢复正常充电的时间可以由配置命令控制,增加了自由度和可控性。After the user enters the charging state, the user starts to detect the interference when the user wants to perform the touch operation, avoids unnecessary detection, and is more in line with the actual application requirement, and has higher efficiency; after selecting the appropriate frequency hopping, If the detection is still found, the main control chip is notified to take certain measures, such as turning off the charging function of the charger or lowering the charging current, so that the charging can be turned off when the frequency hopping is not successful. The charging function or the way to reduce the charging current avoids the influence of interference; after the user finishes the screen, the main control chip is notified to recharge or restore the normal charging current, so that the normal charging can be resumed in time. Moreover, the time to resume normal charging can be controlled by configuration commands, which increases the degree of freedom and controllability.
实施例7:Example 7
请参阅图8所示,本实施例提供了一种电容触摸传感器3,包括触摸控制器2,该触摸控制器2包括实施例5或者实施例6所述的抗干扰系统1。该电容触摸传感器3可应用于触控终端5上,实现触控功能,且能降低或消除触控终端连接充电器充电时所产生的共模干扰对触控操作的影响,不影响充电时用户的正常使用。Referring to FIG. 8 , the embodiment provides a capacitive touch sensor 3 including a touch controller 2 including the anti-interference system 1 described in Embodiment 5 or Embodiment 6. The capacitive touch sensor 3 can be applied to the touch terminal 5 to implement the touch function, and can reduce or eliminate the influence of the common mode interference generated when the touch terminal is connected to the charger for charging, and does not affect the user during charging. Normal use.
实施例8:Example 8
请参阅图8所示,为本发明实施例8的触控终端结构框图。该触控终端5包括实施例7提供的电容触摸传感器3和主控芯片4,主控芯片4包括:Please refer to FIG. 8 , which is a structural block diagram of a touch terminal according to Embodiment 8 of the present invention. The touch terminal 5 includes the capacitive touch sensor 3 and the main control chip 4 provided in Embodiment 7, and the main control chip 4 includes:
充电通知单元41,与充电状态判断单元11连接,用于在触控终端5与充电器(图中未示出)连接并对触控终端5的电池进行充电时通知触摸控制器2进入充电模式,触摸控制器2的充电状态判断单元11在接收到进入充电模式的通知时判断触控终端5是否进入充电状态;The charging notification unit 41 is connected to the charging state determining unit 11 for notifying the touch controller 2 to enter the charging mode when the touch terminal 5 is connected to the charger (not shown) and charging the battery of the touch terminal 5. The charging state determining unit 11 of the touch controller 2 determines whether the touch terminal 5 enters the charging state when receiving the notification of entering the charging mode;
充电控制单元42,分别与屏幕状态检测单元15和干扰通知判断单元43连接,用于在干扰通知判断单元43判断有干扰通知时,关闭充电或者将充电电流降低,或者在屏幕状态检测单元15检测到用户对屏幕的操作完毕后,重新开启充电或者恢复正常充电电流;The charging control unit 42 is respectively connected to the screen state detecting unit 15 and the interference notification determining unit 43 for turning off the charging or lowering the charging current when the interference notification determining unit 43 determines that there is an interference notification, or detecting the screen state detecting unit 15 After the operation of the user on the screen is completed, the charging is restarted or the normal charging current is restored;
干扰通知判断单元43,分别于干扰通知发送单元16和充电控制单元42连接,用于在读取用户在屏幕上的触摸坐标前,判断干扰通知发送单元16是否发送有干扰通知,并将判断结果发送给充电控制单元42。The interference notification determining unit 43 is respectively connected to the interference notification sending unit 16 and the charging control unit 42 for determining whether the interference notification sending unit 16 sends an interference notification before reading the user's touch coordinates on the screen, and the judgment result is obtained. It is sent to the charging control unit 42.
主控芯片4与电容触摸传感器3进行交互与配合,其中各单元的具体工作方法与前述实施例1~4中的方法类似,此处不再描述。The main control chip 4 interacts with the capacitive touch sensor 3, and the specific working method of each unit is similar to the method in the foregoing embodiments 1 to 4, and will not be described here.
本实施例提供的触控终端5能实现触控功能,且能降低或消除触控终端连接充电器充电时所产生的共模干扰对触控操作的影响,不影响充电时用户的正常使用。The touch terminal 5 provided in this embodiment can implement the touch function, and can reduce or eliminate the influence of the common mode interference generated when the touch terminal is connected to the charger for charging, and does not affect the normal use of the user during charging.
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims (16)

  1. 一种抗干扰方法,其特征在于,所述方法包括如下步骤: An anti-interference method, characterized in that the method comprises the following steps:
    判断触控终端是否进入充电状态,若是则执行后续步骤;Determining whether the touch terminal enters a charging state, and if so, performing a subsequent step;
    检测干扰;Detecting interference;
    检测到符合第一预设条件的干扰时,挑选触摸屏驱动频率以跳开所述干扰频率。When the interference meeting the first preset condition is detected, the touch screen driving frequency is selected to jump off the interference frequency.
  2. 根据权利要求1所述的方法,其特征在于,在所述判断触控终端是否进入充电状态,若是则执行后续步骤的步骤之后,还包括如下步骤:The method according to claim 1, wherein the determining whether the touch terminal enters a charging state, and if yes, performing the steps of the subsequent steps, further comprising the steps of:
    检测屏幕是否被激活或者用户是否操作屏幕;Detecting whether the screen is activated or whether the user operates the screen;
    检测到屏幕被激活或者用户操作屏幕时,执行所述检测干扰的步骤。The step of detecting interference is performed when it is detected that the screen is activated or the user operates the screen.
  3. 根据权利要求1或2所述的方法,其特征在于,在所述检测到符合第一预设条件的干扰时,挑选触摸屏驱动频率以跳开所述干扰频率的步骤之后,还包括如下步骤:The method according to claim 1 or 2, wherein after the step of selecting the touch screen driving frequency to jump off the interference frequency when the interference corresponding to the first preset condition is detected, the method further comprises the following steps:
    再次检测干扰;Detect interference again;
    检测到符合第二预设条件的干扰时,发送干扰通知;Sending an interference notification when an interference meeting the second preset condition is detected;
    关闭充电或者将充电电流降低。Turn off charging or lower the charging current.
  4. 根据权利要求3所述的方法,其特征在于,在所述关闭充电或者将充电电流降低的步骤之后,还包括如下步骤:The method according to claim 3, further comprising the following steps after the step of turning off charging or reducing the charging current:
    检测用户对屏幕的操作是否完毕;Detecting whether the user's operation on the screen is completed;
    检测到用户对屏幕的操作完毕后,重新开启充电或者恢复正常充电电流。After detecting that the user's operation on the screen is completed, the charging is restarted or the normal charging current is restored.
  5. 根据权利要求4所述的方法,其特征在于,所述检测用户对屏幕的操作是否完毕;检测到用户对屏幕的操作完毕后,重新开启充电或者恢复正常充电电流的步骤具体为:The method according to claim 4, wherein the detecting the user's operation on the screen is completed; and detecting the user's operation on the screen is completed, the step of re-enabling charging or restoring the normal charging current is specifically:
    检测触摸控制器的工作状态;Detecting the working state of the touch controller;
    检测到触摸控制器的工作状态为省电模式时,重新开启充电或者恢复正常充电电流。When it is detected that the operating state of the touch controller is the power saving mode, the charging is restarted or the normal charging current is restored.
  6. 根据权利要求1或2所述的方法,其特征在于,所述判断触控终端是否进入充电状态,若是则执行后续步骤的步骤具体包括:The method according to claim 1 or 2, wherein the determining whether the touch terminal enters a charging state, and if yes, the step of performing the subsequent steps specifically includes:
    检测特定寄存器中的数值,判断触控终端是否进入充电状态。The value in the specific register is detected to determine whether the touch terminal is in a charging state.
  7. 根据权利要求1或2所述的方法,其特征在于,所述检测到符合第一预设条件的干扰时,挑选触摸屏驱动频率以跳开所述干扰频率的步骤具体包括:The method according to claim 1 or 2, wherein when the detecting the interference corresponding to the first preset condition, the step of selecting the touch screen driving frequency to jump off the interference frequency comprises:
    判断检测到的干扰与第一预设条件是否相符;Determining whether the detected interference matches the first preset condition;
    检测到的干扰与第一预设条件相符时,扫描检测到的干扰频率;Scanning the detected interference frequency when the detected interference matches the first preset condition;
    根据扫描到的干扰频率,选择合适的触摸屏驱动频率以跳开所述干扰频率。Based on the scanned interference frequency, an appropriate touch screen drive frequency is selected to trip the interference frequency.
  8. 根据权利要求3所述的方法,其特征在于,在所述关闭充电或者将充电电流降低的步骤之前,还包括如下步骤:The method according to claim 3, further comprising the steps of: before said step of turning off charging or reducing charging current:
    在读取用户在屏幕上的触摸坐标前,判断是否有所述干扰通知,若有,则执行所述关闭充电或者将充电电流降低的步骤。Before reading the user's touch coordinates on the screen, it is determined whether there is the interference notification, and if so, the step of turning off the charging or lowering the charging current is performed.
  9. 根据权利要求3所述的方法,其特征在于,在所述关闭充电或者将充电电流降低的步骤之后,返回执行所述检测干扰的步骤或者再次检测干扰的步骤。The method according to claim 3, wherein after said step of turning off charging or reducing charging current, returning to said step of detecting interference or detecting interference again.
  10. 根据权利要求4所述的方法,其特征在于,在所述检测到用户对屏幕的操作完毕后,重新开启充电或者恢复正常充电电流的步骤之后,返回执行所述判断触控终端是否进入充电状态,若是则执行后续步骤的步骤。The method according to claim 4, after the step of re-opening charging or restoring normal charging current after detecting the operation of the user on the screen is completed, returning to performing the determining whether the touch terminal enters a charging state. If yes, follow the steps in the next steps.
  11. 根据权利要求3所述的方法,其特征在于,在所述检测到符合第二预设条件的干扰时,发送干扰通知的步骤之后,还包括如下步骤:The method according to claim 3, wherein after the step of transmitting the interference notification when the interference conforming to the second preset condition is detected, the method further comprises the following steps:
    判断检测到的干扰与第三预设条件是否相符;Determining whether the detected interference matches the third preset condition;
    检测到的干扰与第三预设条件相符时,扫描检测到的干扰频率;Scanning the detected interference frequency when the detected interference matches the third preset condition;
    根据扫描到的干扰频率,选择合适的触摸屏驱动频率以跳开所述干扰频率。Based on the scanned interference frequency, an appropriate touch screen drive frequency is selected to trip the interference frequency.
  12. 一种抗干扰系统,其特征在于,所述系统包括:An anti-jamming system, characterized in that the system comprises:
    充电状态判断单元,用于判断触控终端是否进入充电状态;a charging state determining unit, configured to determine whether the touch terminal enters a charging state;
    干扰检测单元,用于检测干扰;An interference detecting unit for detecting interference;
    干扰判断单元,用于判断检测到的干扰与第一预设条件和第三预设条件是否相符;The interference judging unit is configured to determine whether the detected interference is consistent with the first preset condition and the third preset condition;
    跳频控制单元,用于在检测到符合第一预设条件和第三预设条件的干扰时,挑选触摸屏驱动频率以跳开所述干扰频率。The frequency hopping control unit is configured to select a touch screen driving frequency to jump off the interference frequency when detecting interference corresponding to the first preset condition and the third preset condition.
  13. 根据权利要求12所述的系统,其特征在于,所述跳频控制单元具体包括:The system of claim 12, wherein the frequency hopping control unit comprises:
    干扰频率扫描模块,用于在检测到的干扰与第一预设条件和第三预设条件相符时,扫描检测到的干扰频率;The interference frequency scanning module is configured to scan the detected interference frequency when the detected interference matches the first preset condition and the third preset condition;
    跳频模块,用于根据扫描到的干扰频率,选择合适的触摸屏驱动频率以跳开所述干扰频率。The frequency hopping module is configured to select a suitable touch screen driving frequency to jump off the interference frequency according to the scanned interference frequency.
  14. 根据权利要求12或13所述的系统,其特征在于,所述干扰判断单元还用于判断检测到的干扰与第二预设条件是否相符;所述系统还包括:The system according to claim 12 or 13, wherein the interference determining unit is further configured to determine whether the detected interference is consistent with a second preset condition; the system further comprising:
    屏幕状态检测单元,用于检测屏幕是否被激活、用户是否操作屏幕或者用户对屏幕的操作是否完毕;a screen state detecting unit, configured to detect whether the screen is activated, whether the user operates the screen, or whether the user's operation on the screen is completed;
    干扰通知发送单元,用于在跳频控制单元挑选触摸屏驱动频率以跳开所述干扰频率后、干扰检测单元检测到符合第二预设条件的干扰时,发送干扰通知;The interference notification sending unit is configured to: when the frequency hopping control unit selects the touch screen driving frequency to jump off the interference frequency, and the interference detecting unit detects the interference that meets the second preset condition, sending an interference notification;
    所述干扰检测单元在充电状态判断单元判断触控终端进入充电状态、或者屏幕状态检测单元检测到屏幕被激活、或者检测到用户操作屏幕、或者检测到用户对屏幕的操作完毕时、或者跳频控制单元挑选触摸屏驱动频率以跳开所述干扰频率后检测干扰。The interference detecting unit determines whether the touch terminal enters the charging state, or the screen state detecting unit detects that the screen is activated, detects that the user operates the screen, or detects that the user's operation on the screen is completed, or hopping The control unit selects the touch screen driving frequency to detect the interference after jumping off the interference frequency.
  15. 一种电容触摸传感器,包括触摸控制器,其特征在于,所述触摸控制器包括权利要求14所述的抗干扰系统。A capacitive touch sensor comprising a touch controller, characterized in that the touch controller comprises the anti-interference system of claim 14.
  16. 一种触控终端,所述触控终端包括主控芯片,其特征在于,所述触控终端还包括权利要求15所述的电容触摸传感器;A touch terminal includes a main control chip, wherein the touch terminal further includes the capacitive touch sensor of claim 15;
    所述主控芯片包括充电通知单元、充电控制单元和干扰通知判断单元,The main control chip includes a charging notification unit, a charging control unit, and an interference notification determining unit.
    所述充电通知单元用于在触控终端与充电器连接并对触控终端的电池进行充电时通知触摸控制器进入充电模式,所述触摸控制器的充电状态判断单元在接收到所述进入充电模式的通知时判断触控终端是否进入充电状态;The charging notification unit is configured to notify the touch controller to enter a charging mode when the touch terminal is connected to the charger and charge the battery of the touch terminal, and the charging state determining unit of the touch controller receives the incoming charging Determine whether the touch terminal enters the charging state when the mode is notified;
    所述充电控制单元用于在所述干扰通知判断单元判断有所述干扰通知时,关闭充电或者将充电电流降低,或者在屏幕状态检测单元检测到用户对屏幕的操作完毕后,重新开启充电或者恢复正常充电电流;The charging control unit is configured to: when the interference notification determining unit determines that the interference notification is present, turn off charging or reduce the charging current, or restart the charging after the screen state detecting unit detects that the user’s operation on the screen is completed; Restore normal charging current;
    所述干扰通知判断单元用于在读取用户在屏幕上的触摸坐标前,判断是否有所述干扰通知,所述干扰通知由所述干扰通知发送单元发送给干扰通知判断单元。The interference notification determining unit is configured to determine whether there is the interference notification before reading the touch coordinates of the user on the screen, and the interference notification is sent by the interference notification sending unit to the interference notification determining unit.
PCT/CN2013/079149 2012-08-09 2013-07-10 Capacitance touch sensor, touch terminal, and anti-interference method and system thereof WO2014023147A1 (en)

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