Wireless video link synchronization

Details Wireless video link synchronization Wireless video link synchronization

2011-08-09

2011-08-09

Tran, Trang U (Department: 2422)

Television

Synchronization

C348S513000, C348S537000

Reexamination Certificate

active

07995143

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.

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