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Apparatus and method for allocating bits temporaly between frames in a coding system

  • US 6,895,050 B2
  • Filed: 04/19/2001
  • Issued: 05/17/2005
  • Est. Priority Date: 04/19/2001
  • Status: Expired due to Fees
First Claim
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1. A method for adjusting a target bit rate for a frame, said method comprising the steps of:

  • (a) determining a picture quality measure of a current frame for a particular frame type;

    (b) determining a picture quality measure for each of a plurality of immediately previous frames corresponding to said frame type of said current frame;

    (c) computing an average picture quality measure from said picture quality measures of said plurality of immediately previous frames;

    (d) computing a difference between the average picture quality measure and the picture quality measure of said current frame for producing a resultant value;

    (e) comparing the resultant value to a threshold value for producing a comparing result; and

    (f) adjusting said target bit rate in response to said comparing result.

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