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Method and apparatus for modifying the quantization step of each macro-block in a video segment

  • US 5,677,734 A
  • Filed: 08/15/1995
  • Issued: 10/14/1997
  • Est. Priority Date: 08/19/1994
  • Status: Expired due to Term
First Claim
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1. A method for providing quantized and encoded digital video signals, comprising the steps of:

  • determining a quantization step in terms of a video segment composed of a plurality of macro-blocks as a unit so that a quantity of quantized data is less than a pre-set data quantity, wherein quantization steps for every macro-block constituting the video segment initially are equal to said determined quantization step of the video segment;

    modifying the quantization steps associated with each of the plurality of macro-blocks of the video segment individually one at a time in a pre-determined order without exceeding the pre-set data quantity;

    quantizing the digital video signal with the determined quantization steps associated with each of the plurality of macro-blocks.

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