Invention Grant
- Patent Title: Device and method for synchronizing display and touch controller with host polling
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Application No.: US14033068Application Date: 2013-09-20
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Publication No.: US09601085B2Publication Date: 2017-03-21
- Inventor: Joel Jordan
- Applicant: SYNAPTICS INCORPORATED
- Applicant Address: US CA San Jose
- Assignee: Synaptics Incorporated
- Current Assignee: Synaptics Incorporated
- Current Assignee Address: US CA San Jose
- Agency: Osha Liang LLP
- Main IPC: G09G5/12
- IPC: G09G5/12 ; G06F3/041 ; G09G5/08

Abstract:
Devices, systems, and methods are provided for coordinating the interaction between a touch screen controller and a display controller in an electronic device of the type including a host processor, a touch screen controller configured to acquire capacitive measurements from a touch screen, and a display controller configured to update a display at a refresh frequency and phase. The method includes: sharing a synchronization signal between the display controller and the host processor, the synchronization signal indicative of the refresh frequency and phase; polling the touch screen controller, by the host processor, based on the synchronization signal; and in response to the polling, acquiring the capacitive measurements by the touch screen controller at a sampling rate and phase determined by the refresh frequency and phase.
Public/Granted literature
- US20150084908A1 DEVICE AND METHOD FOR SYNCHRONIZING DISPLAY AND TOUCH CONTROLLER WITH HOST POLLING Public/Granted day:2015-03-26
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