Invention Grant
- Patent Title: Touch scan modes during device charging
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Application No.: US14475293Application Date: 2014-09-02
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Publication No.: US10203803B2Publication Date: 2019-02-12
- Inventor: Wesley W. Zuber , David H. C. Shih , Louis W. Bokma
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Morrison & Foerster LLP
- Main IPC: G06F3/041
- IPC: G06F3/041 ; G06F3/044

Abstract:
Touch scan modes for touch sensitive devices during device charge is disclosed. To prevent adverse effects to the touch sensor panel due to inductive noise while the device is charging, the touch controller can switch to a touch scan mode (i.e., power charging touch mode) that can cancel or reduce noise from the touch scan or touch image. Power charging touch modes can include low noise frequency selection, increased number of touch samples employed to calculate an average, and simultaneous sampling. In some examples, a power charging touch mode can be different from a normal touch scan mode (i.e., a touch scan mode when the device is not charging). With the one or more power charging touch modes, false touch readings, erroneous touch location identification, and/or undetected touches can be eliminated or reduced.
Public/Granted literature
- US20160062494A1 TOUCH SCAN MODES DURING DEVICE CHARGING Public/Granted day:2016-03-03
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