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Digital video signal processing with cut editing feature

  • US 4,891,715 A
  • Filed: 02/10/1988
  • Issued: 01/02/1990
  • Est. Priority Date: 02/18/1987
  • Status: Expired due to Term
First Claim
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1. A method of processing a digital video signal, the method comprising the steps of;

  • storing a segment of an input digital video signal in a random access memory;

    repetitively writing said input digital signal in said memory at a standard speed, said writing proceeding cyclically from the start of said memory to the finish of said memory, then returning to the start of said memory;

    reading said digital video signal from said memory at said standard speed, said reading normally lagging behind said writing by an amount substantially equal to the capacity of said memory;

    effecting a cut edit of the read digital video signal by step reducing said amount by which said reading lags behind said writing; and

    subsequent to said cut edit, reducing the reading speed below said standard speed until the amount by which said reading lags behind said writing is restored to said normal amount.

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