基本信息:
- 专利标题： CAPACITIVE TOUCH DEVICE AND SENSING METHOD THEREOF
- 专利标题（中）：电容触摸装置及其感应方法
- 申请号：US13532188 申请日：2012-06-25
- 公开(公告)号：US20130257790A1 公开(公告)日：2013-10-03
- 发明人： Chun-Hung Chen , Yi-Rong Ko , Chih-Peng Hsia
- 申请人： Chun-Hung Chen , Yi-Rong Ko , Chih-Peng Hsia
- 申请人地址： TW Hsinchu
- 专利权人： NOVATEK MICROELECTRONICS CORP.
- 当前专利权人： NOVATEK MICROELECTRONICS CORP.
- 当前专利权人地址： TW Hsinchu
- 优先权： TW101110874 20120328
- 主分类号： G06F3/044
- IPC分类号： G06F3/044
摘要：
A capacitive touch device includes a capacitive touch panel, a driving control unit, k ADCs, a multiplex network and a processing unit. The capacitive touch panel has an m×n sensing point matrix formed by m driving line and n sensing lines. The driving control unit is coupled to the m driving lines. The multiplex network connects the n sensing lines and the k ADCs by time-domain multiplexing. The processing unit is coupled to the k ADCs. At least a part of the driving lines and at least a part of the sensing lines are assigned to be electrically connected. The processing unit senses according to multiple frequencies to obtain multiple signal strength values, and selects the frequency corresponding to a smallest signal value to be a sensing frequency of the capacitive touch device.
摘要（中）：
电容式触摸装置包括电容式触摸面板，驱动控制单元，k个ADC，复用网络和处理单元。 电容式触摸屏具有由m条驱动线和n条感测线构成的m×n感测点矩阵。 驱动控制单元与m条驱动线连接。 复用网络通过时域复用连接n个感测线路和k个ADC。 处理单元耦合到k个ADC。 驱动线的至少一部分和感测线的至少一部分被分配为电连接。 处理单元根据多个频率感测以获得多个信号强度值，并且将与最小信号值对应的频率选择为电容式触摸装置的感测频率。
公开/授权文献:
- US09013445B2 Capacitive touch device and sensing method thereof 公开/授权日：2015-04-21