Invention Grant
- Patent Title: Wireless video link synchronization
- Patent Title (中): 无线视频链路同步
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Application No.: US11353291Application Date: 2006-02-10
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Publication No.: US07995143B2Publication Date: 2011-08-09
- Inventor: Gregory L. Christison , Fred S. Stivers , Felix C. Fernandes
- Applicant: Gregory L. Christison , Fred S. Stivers , Felix C. Fernandes
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Semion Talpalatsky
- Main IPC: H04N5/04
- IPC: H04N5/04 ; H04N9/44

Abstract:
The present invention provides a method and apparatus for synchronizing wireless video data. The method involves first synchronizing the pixel clock of a video output device with the pixel clock of a video input device. This is accomplished by latching video counters in the input and output devices (creating a transmit and receive timestamp) for each wireless video data packet and adjusting the pixel clock frequency of the output device according to differences between these timestamps. Once the pixel clocks are synchronized, video frames from the video output device are synchronized with video frames from video input device such that only a fraction of a video frame is buffered at any time. The video frames are synchronized by offsetting the data stream from the video input device N lines ahead of the data stream from the video output device, wherein N is less than the total number of lines in a single video frame.
Public/Granted literature
- US20070189399A1 Wireless video link synchronization Public/Granted day:2007-08-16
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