Invention Grant
- Patent Title: System and method to drive touch panel to measure hover
- Patent Title (中): 驱动触摸屏测量悬停的系统和方法
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Application No.: US14108672Application Date: 2013-12-17
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Publication No.: US09477356B2Publication Date: 2016-10-25
- Inventor: Guozhong Shen , Ozan E. Erdogan, Sr. , Daniel S. Christman
- Applicant: Qualcomm Technologies, Inc.
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Weaver Austin Villeneuve & Sampson, LLP
- Main IPC: G06F3/044
- IPC: G06F3/044 ; G06F3/041

Abstract:
Techniques in accordance with the present disclosure allow the detection of hover events and/or touch events performed over the touch panel without requiring that the touch panel be equipped with additional hardware and/or materials. In one or more implementations, the apparatus includes a touch panel controller configured to operatively couple to a touch panel sensor. The touch panel sensor includes at least one drive electrode and at least one sense electrode. The touch panel controller includes output circuitry operatively coupled to the at least one drive electrode. The output circuitry is configured to generate drive signals to drive the drive electrode (i.e., drive the touch panel sensor). The touch panel controller also includes input circuitry operatively coupled to the at least one sense electrode. The input circuitry is configured to measure mutual-capacitance between the at least drive electrode and the at least one sense electrode to detect a hover event. The present disclosure is directed to driving a subset of rows (or columns) and senses the subset of the remaining rows (or columns). Thus, the same sensor can measure multi-touch event and hover without changes to sensor pattern.
Public/Granted literature
- US20140375598A1 SYSTEM AND METHOD TO DRIVE TOUCH PANEL TO MEASURE HOVER Public/Granted day:2014-12-25
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