发明申请
US20120200524A1 NOISE FILTERING DEVICES, SYSTEMS AND METHODS FOR CAPACITANCE SENSING DEVICES
有权
噪声滤波装置,系统和电容传感装置的方法
- 专利标题: NOISE FILTERING DEVICES, SYSTEMS AND METHODS FOR CAPACITANCE SENSING DEVICES
- 专利标题(中): 噪声滤波装置,系统和电容传感装置的方法
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申请号: US13247951申请日: 2011-09-28
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公开(公告)号: US20120200524A1公开(公告)日: 2012-08-09
- 发明人: Darrin Vallis , Victor Kremin , Andriy Maharyta , Yuriy Boychuk , Anton Konovalov , Oleksandr Karpin , Ihor Musijchuk , Hans Klein , Edward Grivna
- 申请人: Darrin Vallis , Victor Kremin , Andriy Maharyta , Yuriy Boychuk , Anton Konovalov , Oleksandr Karpin , Ihor Musijchuk , Hans Klein , Edward Grivna
- 申请人地址: US CA San Jose
- 专利权人: CYPRESS SEMICONDUCTOR CORPORATION
- 当前专利权人: CYPRESS SEMICONDUCTOR CORPORATION
- 当前专利权人地址: US CA San Jose
- 主分类号: G06F3/045
- IPC分类号: G06F3/045 ; G01R29/26
摘要:
A capacitance sensing system can filter noise that presents in a subset of electrodes in the proximity of a sense object (i.e., finger). A capacitance sensing system can include a sense network comprising a plurality of electrodes for generating sense values; a noise listening circuit configured to detect noise on a plurality of the electrodes; and a filtering circuit that enables a filtering for localized noise events when detected noise values are above one level, and disables the filtering for localized noise events when detected noise values are below the one level.
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