• Patent Title: Ungrounded user signal compensation for pixelated self-capacitance touch sensor panel
  • Application No.: US15507722
    Application Date: 2014-09-22
  • Publication No.: US10705658B2
    Publication Date: 2020-07-07
  • Inventor: Yingxuan LiMarduke YousefporWeijun 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
Ungrounded user signal compensation for pixelated self-capacitance touch sensor panel
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.
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