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1. 发明授权

US08599168B2 Touch detection method and circuit for capacitive touch panels 有权
标题翻译：电容触摸屏的触摸检测方法和电路
公开(公告)号：US08599168B2
公开(公告)日：2013-12-03
申请号：US13066183
申请日：2011-04-07
申请人： Lianghua Mo , Yan Guo
发明人： Lianghua Mo , Yan Guo
IPC分类号： G06F3/045
CPC分类号： G06F3/044
摘要： A touch detection method for capacitive touch panels includes the steps of scanning the rows and columns of the capacitive matrix of a touch panel respectively; obtaining the capacitance differential value; processing the obtained capacitance differential value; and determining whether there is a touch on the touch panel in response to the processed capacitance differential value. The capacitance differential value is obtained by one of the steps of synchronously scanning two rows at the same time; synchronously scanning two columns at the same time; scanning one row to obtain the capacitance differential value between the row and a reference capacitance; and scanning one column to obtain the capacitance differential value between the column and a reference capacitance. The present invention creates conditions for the elimination of common code interferences and greatly improves the interference resistance of a capacitive touch panel.
摘要翻译：电容触摸面板的触摸检测方法包括以下步骤：分别扫描触摸面板的电容矩阵的行和列; 获得电容差分值; 处理所获得的电容差分值; 以及响应于所处理的电容差分值来确定触摸面板上是否存在触摸。通过同步同时扫描两行的步骤之一获得电容差分值; 同时同步扫描两列; 扫描一行以获得行与参考电容之间的电容差分值; 并扫描一列以获得列与参考电容之间的电容差分值。本发明创造了消除通用代码干扰的条件，并大大提高了电容式触摸面板的抗干扰能力。

2. 发明申请

US20110248955A1 Touch detection method and circuit for capacitive touch panels 有权
标题翻译：电容触摸屏的触摸检测方法和电路
公开(公告)号：US20110248955A1
公开(公告)日：2011-10-13
申请号：US13066183
申请日：2011-04-07
申请人： Lianghua Mo , Yan Guo
发明人： Lianghua Mo , Yan Guo
IPC分类号： G06F3/044
CPC分类号： G06F3/044
摘要： The present invention discloses a touch detection method and circuit for capacitive touch panels. The touch detection method for capacitive touch panels comprises scanning the rows and columns of the capacitive matrix of a touch panel respectively, wherein during the scanning of the rows or columns of the capacitive matrix of the touch panel, two rows or columns are synchronously scanned at the same time to obtain the capacitance differential value between the two rows or columns, or one row or column is scanned at the same time to obtain the capacitance differential value between the row or column and a reference capacitance; and then processing the obtained capacitance differential value. The present invention creates conditions for the elimination of common code interferences and greatly improves the interference resistance of a capacitive touch panel.
摘要翻译：本发明公开了一种用于电容式触摸屏的触摸检测方法和电路。电容式触摸屏的触摸检测方法包括分别扫描触摸面板的电容矩阵的行和列，其中在扫描触摸面板的电容矩阵的行或列期间，两行或列被同步地扫描在同时获得两行或两列之间的电容差分值，或同时扫描一行或一列，以获得行或列与参考电容之间的电容差分值; 然后处理所获得的电容差分值。本发明创造了消除通用代码干扰的条件，并大大提高了电容式触摸面板的抗干扰能力。

3. 发明申请

US20110221701A1 Multi-touch detection method for capacitive touch screens 审中-公开
标题翻译：电容触摸屏多点触摸检测方法
公开(公告)号：US20110221701A1
公开(公告)日：2011-09-15
申请号：US13065024
申请日：2011-03-10
申请人： Jingkai Zhang , Yan Guo , Lianghua Mo
发明人： Jingkai Zhang , Yan Guo , Lianghua Mo
IPC分类号： G06F3/045
CPC分类号： G06F3/044 , G06F3/0418 , G06F2203/04104
摘要： This invention discloses a multi-touch detection method for capacitive touch screens, which includes the following steps: conducting scan detection of capacitance of the rows and columns of a touch screen matrix to respectively acquire the capacitance data of the rows and columns of the touch screen matrix; acquiring an initial capacitance threshold value and calculating capacitance value of each row and each column by subtracting the initial capacitance threshold value from the capacitance data of each row and each column respectively; judging whether a curved section with a capacitance value of more than zero exists in the calculated capacitance value curve of the rows and columns; if so, the gravity center point of each curved section with a calculated capacitance value of more than zero is taken as the contact point coordinate corresponding to the curved section; if not, no touch is made; and the column coordinate and the row coordinate of each contact point is sent to a processor for processing. This invention reduces the volume of data with processing necessity, decreases the load of the processor, improves the anti-interference performance of a system to a certain extent, and also lowers the probability of wrong touch.
摘要翻译：本发明公开了一种用于电容式触摸屏的多点触摸检测方法，包括以下步骤：对触摸屏矩阵的行和列的电容进行扫描检测，以分别获取触摸屏的行和列的电容数据矩阵; 通过从每行和每列的电容数据中减去初始电容阈值来获取初始电容阈值并计算每行和每列的电容值; 判断所计算的行和列的电容值曲线中是否存在电容值大于零的弯曲部分; 如果是，则将计算的电容值大于零的每个弯曲部分的重心点作为与弯曲部分相对应的接触点坐标; 如果没有，没有触摸; 并将每个接触点的列坐标和行坐标发送到处理器进行处理。本发明通过处理必要性来减少数据量，降低处理器的负担，在一定程度上提高系统的抗干扰性能，并降低错误触摸的可能性。

4. 发明授权

US08730207B2 Method of driving and detection for capacitive touch screen and device thereof 有权
标题翻译：电容式触摸屏的驱动和检测方法及其装置
公开(公告)号：US08730207B2
公开(公告)日：2014-05-20
申请号：US13561439
申请日：2012-07-30
申请人： Lianghua Mo , Junqiao Liu
发明人： Lianghua Mo , Junqiao Liu
IPC分类号： G06F3/045
CPC分类号： G06F3/044 , G06F3/0416
摘要： A method of driving and detection for a capacitive touch screen and a device thereof are provided. The method includes: sending, from a driving side, excitation signals through a plurality of channels simultaneously during the same driving and detection time period; receiving, by each of receiving channels at a receiving side, a charge signal generated from the excitation signals through coupling capacitances at corresponding touch detection points, and performing detection, which includes: converting and amplifying the charge signal into a voltage signal, and performing signal demodulation and analog-to-digital conversion on the voltage signal; and storing digital signals obtained from the analog-to-digital conversion, and analyzing the digital signals by a controller to obtain a detection result. This can achieve rapid scan, increase frame rate in detection, and meet the rapidity requirement for performing display driving and touch detection at different time slots.
摘要翻译：提供了一种电容式触摸屏的驱动和检测方法及其装置。该方法包括：在相同的驾驶和检测时段期间，从驱动侧同时发送通过多个通道的激励信号; 通过接收侧的每个接收通道接收从激励信号通过相应的触摸检测点处的耦合电容产生的充电信号，并执行检测，其包括：将充电信号转换和放大为电压信号，并执行信号对电压信号进行解调和模数转换; 并存储从模数转换获得的数字信号，并通过控制器分析数字信号以获得检测结果。这可以实现快速扫描，提高检测帧速率，满足在不同时隙执行显示驱动和触摸检测的快速要求。

5. 发明授权

US09170675B2 Noise reduction method, device and system on the basis of touch detection of a capacitive screen 有权
标题翻译：基于电容屏的触摸检测的降噪方法，装置和系统
公开(公告)号：US09170675B2
公开(公告)日：2015-10-27
申请号：US13611668
申请日：2012-09-12
申请人： Lianghua Mo , Chen Li , Jingkai Zhang
发明人： Lianghua Mo , Chen Li , Jingkai Zhang
IPC分类号： G06F3/045 , G06F3/041 , G06F3/044
CPC分类号： G06F3/0416 , G06F3/0418 , G06F3/044
摘要： It is provided a noise reduction method, device and system on the basis of touch detection of a capacitive screen. The noise reduction method includes: sending a first scanning waveform to all receiving terminals by a first sending terminal and then sending a second scanning waveform to all the receiving terminals by a second sending terminal during a detection time period, wherein the phase of the first scanning waveform is continuous with that of the second scanning waveform and the first scanning waveform has a same frequency as that of the second scanning waveform; and filtering a signal received by the receiving terminals after demodulating it. Non-gap scanning can be achieved by performing continuation process to the scanning waveform, i.e. by achieving that the phases are continuous and the frequencies are the same.
摘要翻译：基于电容屏的触摸检测，提供了降噪方法，装置和系统。降噪方法包括：通过第一发送终端向所有接收终端发送第一扫描波形，然后在检测时间段期间由第二发送终端向所有接收终端发送第二扫描波形，其中第一扫描的相位波形与第二扫描波形的波形连续，第一扫描波形具有与第二扫描波形相同的频率; 并且在解调之后对接收终端接收的信号进行滤波。可以通过对扫描波形执行连续处理，即通过实现相位连续并且频率相同来实现非间隙扫描。

6. 发明申请

US20130342497A1 DETECTION METHOD, DEVICE AND SYSTEM FOR DETECTING SELF-CAPACITANCE TOUCH SCREEN 审中-公开
标题翻译：用于检测自适应触摸屏的检测方法，装置和系统
公开(公告)号：US20130342497A1
公开(公告)日：2013-12-26
申请号：US13596837
申请日：2012-08-28
申请人： Lianghua Mo , Weiping Liu
发明人： Lianghua Mo , Weiping Liu
IPC分类号： G06F3/044
CPC分类号： G06F3/044 , G06F3/0418
摘要： It is provided a self-capacitance touch screen detection method, device and system. The method includes: receiving a scanning waveform by a currently detected channel of a self-capacitance touch screen; inputting the voltage of the scanning waveform into an input terminal of a voltage following unit, and driving at least a preset channel that is adjacent to the currently detected channel of the self-capacitance touch screen via an output terminal of the voltage following unit; and calculating self-capacitance touch screen coordinate data for a touch in the currently detected channel. The method not only avoids the disturbance to the detection for a touch in the currently detected channel generated due to water vapor or a water droplet, but also obtains an increased relative change generated by the same touch, and thereby the detection sensibility of the self-capacitance touch screen is improved.
摘要翻译：提供了一种自电容式触摸屏检测方法，装置和系统。该方法包括：通过自电容触摸屏的当前检测通道接收扫描波形; 将所述扫描波形的电压输入到电压跟随单元的输入端，并经由所述电压跟随单元的输出端至少驱动与所述自电容触摸屏的当前检测到的通道相邻的预设通道; 以及计算当前检测到的通道中的触摸的自电容触摸屏坐标数据。该方法不仅避免了由于水蒸气或水滴而产生的当前检测通道中的触摸检测的干扰，而且获得了由相同触摸产生的增加的相对变化，电容触摸屏得到改善。

7. 发明授权

US08493131B2 Capacitive touch panel detection circuit and boost circuit thereof 有权
标题翻译：电容式触摸屏检测电路及其升压电路
公开(公告)号：US08493131B2
公开(公告)日：2013-07-23
申请号：US12932581
申请日：2011-02-28
申请人： Lianghua Mo , Wenping Liu
发明人： Lianghua Mo , Wenping Liu
IPC分类号： G11C5/14
CPC分类号： H02M3/07 , G06F3/0416 , G06F3/044
摘要： The invention discloses a capacitive touch panel detection circuit and a boost circuit thereof, wherein the boost circuit comprises a plurality of charge pumps in series, a sequence circuit and a voltage-stabilizing circuit. The charge pump comprises a first switch, a second switch, a third switch, a fourth switch, a first capacitor and a second capacitor. The switches are controlled by the sequence circuit. During the first half of the working cycle of the charge pump, the first capacitor is charged. During the second half of the working cycle of the charge pump, the second capacitor is charged so that the voltage is two times of the power voltage, after the first capacitor is connected with the power supply in sequence. The boost circuit of the invention does not need an induction and a Schottky diode. All of the capacitors except a voltage-stabilizing capacitor can be integrated into a chip. Therefore, the number of off-chip ancillary components can be reduced. Furthermore, the problem of electromagnetic interference in an inductive boost circuit can be solved.
摘要翻译：本发明公开了一种电容式触摸屏检测电路及其升压电路，其中升压电路包括串联的多个电荷泵，序列电路和稳压电路。电荷泵包括第一开关，第二开关，第三开关，第四开关，第一电容器和第二电容器。开关由顺序电路控制。在电荷泵的工作周期的前半段，第一个电容器被充电。在电荷泵的工作周期的后半期间，在第一电容器依次与电源连接之后，第二电容器被充电，使得电压是电源电压的两倍。本发明的升压电路不需要感应和肖特基二极管。除了稳压电容器之外的所有电容器都可以集成到芯片中。因此，可以减少片外辅助部件的数量。此外，可以解决感应升压电路中的电磁干扰的问题。

8. 发明申请

US20130169601A1 TOUCH STYLUS, TOUCH DETECTION METHOD AND TOUCH DETECTION SYSTEM 有权
标题翻译：触摸STYLUS，触摸检测方法和触摸检测系统
公开(公告)号：US20130169601A1
公开(公告)日：2013-07-04
申请号：US13428910
申请日：2012-03-23
申请人： Lianghua Mo , Huaiyi Xu , Jincheng Tian , Huadong Dai , Xinxi Jiang , Hua Li
发明人： Lianghua Mo , Huaiyi Xu , Jincheng Tian , Huadong Dai , Xinxi Jiang , Hua Li
IPC分类号： G06F3/033
CPC分类号： G06F3/038 , G06F3/03545 , G06F3/0383 , G06F3/044
摘要： The embodiments of the present invention disclose a touch stylus, a touch detection method and a touch detection system, which are suitable to be used for writing on a capacitive touch screen and can increase the success rate of touch. A method according to an embodiment of the present invention includes: receiving, by a sensing electrode, a square wave signal sent from a stylus tip of a touch stylus; performing a detection process on the square wave signal, by a sensing detection unit, the sensing detection unit having a clock synchronized with a clock of the touch stylus; determining, by a signal processing unit, whether a touch event occurs according to the square wave signal processed with the detection process; and calculating position coordinates of the touch event and reporting the position coordinates to a system control unit, by the signal processing unit, if a touch event occurs.
摘要翻译：本发明的实施例公开了适用于在电容式触摸屏上书写的触摸笔，触摸检测方法和触摸检测系统，并且可以提高触摸的成功率。根据本发明的实施例的方法包括：通过感测电极接收从触摸笔的触笔尖发送的方波信号; 通过感测检测单元对方波信号执行检测处理，感测检测单元具有与触摸笔的时钟同步的时钟; 由信号处理单元确定是否根据用检测处理处理的方波信号发生触摸事件; 以及如果发生触摸事件，则由所述信号处理单元计算所述触摸事件的位置坐标并将位置坐标报告给系统控制单元。

9. 发明申请

US20130120309A1 TOUCH DETECTION METHOD FOR CAPACITIVE TOUCH SCREENS AND TOUCH DETECTION DEVICE 审中-公开
标题翻译：用于电容触摸屏和触摸检测装置的触摸检测方法
公开(公告)号：US20130120309A1
公开(公告)日：2013-05-16
申请号：US13467443
申请日：2012-05-09
申请人： Lianghua Mo
发明人： Lianghua Mo
IPC分类号： G06F3/044
CPC分类号： G06F3/044 , G06F3/0416
摘要： A touch detection method for capacitive touch screens, includes: generating a waveform signal and transmitting the waveform signal to a capacitor under detection, by a transmitting end; converting the waveform signal transmitted by the transmitting end into charges, and transferring the charges to a detection circuit, by the capacitor under detection; and receiving the charges transferred by the capacitor under detection, generating an output signal, determining whether the touch takes place by performing detection processing on the output signal, and resetting the output signal of the detection circuit to a reference level prior to a variation in an edge of the waveform signal, by the detection circuit, where a phase clock of the detection circuit and a phase clock of the transmitting end are kept synchronous.
摘要翻译：一种用于电容式触摸屏的触摸检测方法，包括：通过发送端产生波形信号并将波形信号发送到检测到的电容器; 将由发送端发送的波形信号转换为电荷，并通过检测电容器将电荷转移到检测电路; 并且接收由检测电容器传送的电荷，产生输出信号，通过对输出信号执行检测处理来确定触摸是否发生，以及在检测电路的变化之前将检测电路的输出信号复位为参考电平波形信号的边缘由检测电路，其中检测电路的相位时钟和发送端的相位时钟保持同步。

10. 发明授权

US08786564B2 Touch stylus, touch detection method and touch detection system 有权
标题翻译：触摸笔，触摸检测方法和触摸检测系统
公开(公告)号：US08786564B2
公开(公告)日：2014-07-22
申请号：US13428910
申请日：2012-03-23
申请人： Lianghua Mo , Huaiyi Xu , Jincheng Tian , Huadong Dai , Xinxi Jiang , Hua Li
发明人： Lianghua Mo , Huaiyi Xu , Jincheng Tian , Huadong Dai , Xinxi Jiang , Hua Li
IPC分类号： G06F3/041
CPC分类号： G06F3/038 , G06F3/03545 , G06F3/0383 , G06F3/044
摘要： The embodiments of the present invention disclose a touch stylus, a touch detection method and a touch detection system, which are suitable to be used for writing on a capacitive touch screen and can increase the success rate of touch. A method according to an embodiment of the present invention includes: receiving, by a sensing electrode, a square wave signal sent from a stylus tip of a touch stylus; performing a detection process on the square wave signal, by a sensing detection unit, the sensing detection unit having a clock synchronized with a clock of the touch stylus; determining, by a signal processing unit, whether a touch event occurs according to the square wave signal processed with the detection process; and calculating position coordinates of the touch event and reporting the position coordinates to a system control unit, by the signal processing unit, if a touch event occurs.
摘要翻译：本发明的实施例公开了适用于在电容式触摸屏上书写的触摸笔，触摸检测方法和触摸检测系统，并且可以提高触摸的成功率。根据本发明的实施例的方法包括：通过感测电极接收从触摸笔的触笔尖发送的方波信号; 通过感测检测单元对方波信号执行检测处理，感测检测单元具有与触摸笔的时钟同步的时钟; 由信号处理单元确定是否根据用检测处理处理的方波信号发生触摸事件; 以及如果发生触摸事件，则由所述信号处理单元计算所述触摸事件的位置坐标并将位置坐标报告给系统控制单元。

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