基本信息:
- 专利标题: METHODS AND APPARATUS FOR CAPACITIVE SENSING
- 专利标题(中):用于电容感测的方法和装置
- 申请号:PCT/US2010/002291 申请日:2010-08-20
- 公开(公告)号:WO2011022067A1 公开(公告)日:2011-02-24
- 发明人: PANCE, Aleksandar , LEUNG, Omar, S. , AMM, David, T.
- 申请人: PANCE, Aleksandar , LEUNG, Omar, S. , AMM, David, T.
- 申请人地址: 20405 Williams Ave. Saratoga, CA 95070 US
- 专利权人: PANCE, Aleksandar,LEUNG, Omar, S.,AMM, David, T.
- 当前专利权人: PANCE, Aleksandar,LEUNG, Omar, S.,AMM, David, T.
- 当前专利权人地址: 20405 Williams Ave. Saratoga, CA 95070 US
- 代理机构: MADDEN, Robert, B. et al.
- 优先权: US61/235,905 20090821
- 主分类号: G06F3/044
- IPC分类号: G06F3/044 ; H03K17/955 ; H03K17/96 ; H03K17/975 ; H03K17/98
摘要:
The present disclosure addresses methods and apparatus facilitating capacitive sensing using a conductive surface, and facilitating the sensing of proximity to the conductive surface. The sensed proximity will often be that of a user, but can be another source of a reference voltage potential. In some examples, the described systems are capable of sensing capacitance (including parasitic capacitance) in a circuit that includes the outer conductive surface, and where that outer conductive surface is at a floating electrical potential. In some systems, the systems can be switched between two operating modes, a first mode in which the system will sense proximity to the conductive surface, and a second mode in which the system will use a capacitance measurement to sense contact with the conductive surface.
摘要(中):
本公开涉及使用导电表面促进电容感测的方法和装置,并且有助于感测靠近导电表面。 感测到的接近度通常是用户的接近度,但是可以是参考电压电位的另一个来源。 在一些示例中,所描述的系统能够感测包括外部导电表面的电路中的电容(包括寄生电容),并且其中外部导电表面处于浮置电位。 在一些系统中,系统可以在两种操作模式之间切换,其中系统将感测到与导电表面接近的第一模式,以及其中系统将使用电容测量来感测与导电表面的接触的第二模式。