Invention Grant
- Patent Title: False touch filtering for capacitance sensing systems
- Patent Title (中): 电容感应系统的虚拟触摸滤波
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Application No.: US13658761Application Date: 2012-10-23
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Publication No.: US08766944B2Publication Date: 2014-07-01
- Inventor: Petro Ksondzyk
- Applicant: Cypress Semiconductor Corporation
- Applicant Address: US CA San Jose
- Assignee: Cypress Semiconductor Corporation
- Current Assignee: Cypress Semiconductor Corporation
- Current Assignee Address: US CA San Jose
- Main IPC: G09G5/00
- IPC: G09G5/00

Abstract:
Apparatuses and methods of false touch filtering are described. One device includes a controller and a capacitance sensing array including multiple sense elements (e.g., intersections of TX and RX electrodes). The controller includes a capacitance sensing circuit coupled to the capacitance sensing array, and a filter circuit coupled to the output of the capacitance sensing circuit. The controller is configured to receive, from the capacitance sensing circuit, data representing capacitances of the sense elements, process the data to identify activated sense elements, and filter the data to remove false touch events based on a spatial relationship of activated sense elements.
Public/Granted literature
- US20130234978A1 FALSE TOUCH FILTERING FOR CAPACITANCE SENSING SYSTEMS Public/Granted day:2013-09-12
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