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Fast video multiplexing system

  • US RE37,508 E1
  • Filed: 08/05/1999
  • Issued: 01/15/2002
  • Est. Priority Date: 05/12/1995
  • Status: Expired due to Term
First Claim
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1. A method of processing video signals comprising:

  • (a) selecting one of a plurality of video input signals;

    (b) applying the selected video input signal to an analog to digital video decoder;

    (c) deriving from the selected video input signal an early synchronisation signal corresponding to the start of a field of the signal;

    (d) applying the early synchronisation signal to a control input of the video decoder to enable an output of the video decoder;

    (e) reading data from the enabled output corresponding to the first available field of the selected video input signal;

    (f) repeating steps (a) to (e) for further selected video input signals; and

    (g) combining the data read from the enabled output of the video decoder in each step (e) to form a time division multiplexed video signal.

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