TOUCH PANEL SCAN CONTROL
    21.
    发明申请
    TOUCH PANEL SCAN CONTROL 有权
    触控面板扫描控制

    公开(公告)号:US20150309610A1

    公开(公告)日:2015-10-29

    申请号:US14263786

    申请日:2014-04-28

    IPC分类号: G06F3/044 G06F3/041

    摘要: Certain aspects relate to systems and techniques for scan control for scanning a touch panel. The scan control system can alternate adaptively between scanning the touch panel in a passive scan mode requiring minimal power and in a focused active scan mode that sequentially scans only a portion of the touch panel. The scan control system can monitor the absolute capacitance of some or all of the sensors of the touch panel in passive scan mode and can monitor the mutual capacitance of a portion of the touch panel in focused active scan mode. If the absolute capacitance of any sensor is greater than the baseline capacitance, then the scan control can use this absolute capacitance touch data to determine one or more sub-regions of the touch panel for scanning in focused active scan mode. The mutual capacitance touch data can be used for determining features of the touch event.

    摘要翻译: 某些方面涉及用于扫描触摸面板的扫描控制的系统和技术。 扫描控制系统可以以需要最小功率的无源扫描模式和仅依次扫描触摸面板的一部分的聚焦主动扫描模式来扫描触摸面板而自适应地交替。 扫描控制系统可以以被动扫描模式监测触摸面板的部分或全部传感器的绝对电容,并且可以在聚焦主动扫描模式下监视触摸面板的一部分的互电容。 如果任何传感器的绝对电容大于基线电容,则扫描控制可以使用该绝对电容触摸数据来确定触摸面板的一个或多个子区域,以便在聚焦的主动扫描模式下进行扫描。 互电容触摸数据可用于确定触摸事件的特征。