发明申请
US20150227229A1 SENSOR MATRIX PAD FOR PERFORMING MULTIPLE CAPACITIVE SENSING TECHNIQUES
有权
用于执行多种电容式传感技术的传感器矩阵垫
- 专利标题: SENSOR MATRIX PAD FOR PERFORMING MULTIPLE CAPACITIVE SENSING TECHNIQUES
- 专利标题(中): 用于执行多种电容式传感技术的传感器矩阵垫
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申请号: US14178150申请日: 2014-02-11
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公开(公告)号: US20150227229A1公开(公告)日: 2015-08-13
- 发明人: Adam SCHWARTZ , Petr SHEPELEV
- 申请人: Synaptics Incorporated
- 申请人地址: US CA San Jose
- 专利权人: SYNAPTICS INCORPORATED
- 当前专利权人: SYNAPTICS INCORPORATED
- 当前专利权人地址: US CA San Jose
- 主分类号: G06F3/044
- IPC分类号: G06F3/044
摘要:
Embodiments in the present disclosure use various individual electrodes in a capacitive sensing pixel of an electrode matrix to perform two different techniques of capacitive sensing. For example, a capacitive sensing pixel may include at least two sensor electrodes that may be driven different by a processing system depending on the current capacitive technique being used to user interaction. When performing absolute capacitive sensing, a first one of the sensor electrodes may be driven with a modulated signal in order to measure a change in absolute capacitance between the driven sensor electrode and an input object. Alternatively, when performing transcapacitance sensing, the first sensor electrode is driven with a transmitter signal while a resulting signal is measured on a second sensor electrode in the capacitive pixel. In this manner, the individual electrodes in a capacitive sensing pixel may be driven differently depending on the current capacitive sensing technique.
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