Invention Grant
- Patent Title: Mitigating active stylus/touch cross-coupling
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Application No.: US15485698Application Date: 2017-04-12
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Publication No.: US10452212B2Publication Date: 2019-10-22
- Inventor: Leah Gum , Wayne C. Westerman , Seyed Mohammad Navidpour , Shahrooz Shahparnia
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: DLA Piper LLP US
- Main IPC: G06F3/044
- IPC: G06F3/044

Abstract:
In one aspect, the present disclosure relates to a method including determining which sense lines are potentially corrupted based on touch image information, measuring a sense signal on each sense line, and applying a trained best compensation factor to the measured sense signal on potentially corrupted sense lines in order to produce a corrected sense signal. The corrected sense signal eliminates active stylus signal that has cross-coupled to a touch contact (e.g., a finger or conductive stylus) and thereby mitigates errors in stylus location due to cross-coupled signal.
Public/Granted literature
- US20170293372A1 MITIGATING ACTIVE STYLUS/TOUCH CROSS-COUPLING Public/Granted day:2017-10-12
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