Invention Grant
US09389742B2 Capacitive touch device, capacitive communication device and communication system
有权
电容式触摸装置，电容式通信装置及通讯系统
- Patent Title: Capacitive touch device, capacitive communication device and communication system
- Patent Title (中): 电容式触摸装置，电容式通信装置及通讯系统
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Application No.: US14565622Application Date: 2014-12-10
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Publication No.: US09389742B2Publication Date: 2016-07-12
- Inventor: Ken Crandall , Chung-Wen Lo , David Touney , Tom Murphy , Hsin-Chia Chen
- Applicant: PIXART IMAGING INC.
- Applicant Address: TW Hsin-Chu County
- Assignee: Pixart Imaging Inc.
- Current Assignee: Pixart Imaging Inc.
- Current Assignee Address: TW Hsin-Chu County
- Agency: Rosenberg, Klein & Lee
- Main IPC: G06F3/045
- IPC: G06F3/045 ; G06F3/044
Abstract:
There is provided a capacitive touch device including a touch panel, a detection circuit and a processing unit. The touch panel includes a plurality of drive electrodes and a plurality of receiving electrodes configured to form a coupling electric field with an external touch panel, and the receiving electrodes are respectively configured to output a detection signal. The detection circuit is coupled to one of the receiving electrodes and configured to modulate the detection signal with two signals to generate two detection components. The processing unit is configured to obtain a phase value according to the two detection components to accordingly decode transmission data.
Public/Granted literature
- US20160170516A1 CAPACITIVE TOUCH DEVICE, CAPACITIVE COMMUNICATION DEVICE AND COMMUNICATION SYSTEM Public/Granted day:2016-06-16
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