Digital advanced television systems

  • US 5,485,210 A
  • Filed: 06/07/1993
  • Issued: 01/16/1996
  • Est. Priority Date: 02/20/1991
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of encoding television images comprising the steps of:

  • forming a predicted current image frame by motion compensating a prior reconstructed image frame;

    coding a residual frame using subband representation, the subbands being formed by scaling the predicted current image frame relative to an actual current image frame so that a fraction of the current image is injected into the residual frame, the amount of the current image injected varying between subbands; and

    quantizing the subband-represented residual frame.

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