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VIDEO TRANSMISSION SYSTEM AND VIDEO RELAYER DEVICE

  • US 20100251319A1
  • Filed: 03/31/2010
  • Published: 09/30/2010
  • Est. Priority Date: 03/31/2009
  • Status: Active Grant
First Claim
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1. A video transmission system including a video content source, a video content sink, and video relayer devices, at least one of the video relayer devices comprising:

  • a processing unit;

    a memory to store a calculation result and second key information, the calculation result being produced by the sink based upon first key information, and the second key information being associated with a second key held by the sink;

    the processing unit being configured to include,a key information transfer section to transfer first key information to the sink upon receiving the first key information from the source, the first key information being associated with a first key held by the source;

    a timer pausing section to control the timer of the source to pause upon receiving the first key information from the source;

    the processing unit being operable to receive the second key information and the calculation result from the sink and store the same, respectively, in the memory; and

    the processing unit being further configured to include,a timer resuming section to control the timer to resume when the second key information and the calculation result have been stored, respectively, in the memory.

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