Invention Grant
US09128570B2 Noise filtering devices, systems and methods for capacitance sensing devices
有权
用于电容感测装置的噪声滤波装置，系统和方法
- Patent Title: Noise filtering devices, systems and methods for capacitance sensing devices
- Patent Title (中): 用于电容感测装置的噪声滤波装置，系统和方法
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Application No.: US13247951Application Date: 2011-09-28
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Publication No.: US09128570B2Publication Date: 2015-09-08
- Inventor: Darrin Vallis , Victor Kremin , Andriy Maharyta , Yuriy Boychuk , Anton Konovalov , Oleksandr Karpin , Ihor Musijchuk , Hans Klein , Edward L. Grivna
- Applicant: Darrin Vallis , Victor Kremin , Andriy Maharyta , Yuriy Boychuk , Anton Konovalov , Oleksandr Karpin , Ihor Musijchuk , Hans Klein , Edward L. Grivna
- Applicant Address: US CA San Jose
- Assignee: Cypress Semiconductor Corporation
- Current Assignee: Cypress Semiconductor Corporation
- Current Assignee Address: US CA San Jose
- Main IPC: G06F3/044
- IPC: G06F3/044 ; G01R29/26 ; H04B1/04
Abstract:
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.
Public/Granted literature
- US20120200524A1 NOISE FILTERING DEVICES, SYSTEMS AND METHODS FOR CAPACITANCE SENSING DEVICES Public/Granted day:2012-08-09
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