Invention Grant
- Patent Title: Ungrounded user signal compensation for pixelated self-capacitance touch sensor panel
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Application No.: US15507722Application Date: 2014-09-22
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Publication No.: US10705658B2Publication Date: 2020-07-07
- Inventor: Yingxuan Li , Marduke Yousefpor , Weijun Yao
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Kubota & Basol LLP
- International Application: PCT/US2014/056795 WO 20140922
- International Announcement: WO2016/048269 WO 20160331
- Main IPC: G06F3/044
- IPC: G06F3/044 ; G06F3/041

Abstract:
A touch controller is disclosed. The touch controller can include sense circuitry configured to sense, during a self-capacitance portion of a touch frame, first one or more self-capacitances associated with a first plurality of touch pixels on a touch sensor panel, and sense, during a mutual capacitance portion of the touch frame, first one or more mutual capacitances associated with the first plurality of touch pixels. A touch processor can be configured to, based on the first one or more self-capacitances and the first one or more mutual capacitances, sense a single touch event associated with the touch frame.
Public/Granted literature
- US20170285804A1 UNGROUNDED USER SIGNAL COMPENSATION FOR PIXELATED SELF-CAPACITANCE TOUCH SENSOR PANEL Public/Granted day:2017-10-05
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