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Method and apparatus for providing a multimedia data stream

  • US 20040220966A1
  • Filed: 05/02/2003
  • Published: 11/04/2004
  • Est. Priority Date: 05/02/2003
  • Status: Active Grant
First Claim
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1. A method by which a multimedia data stream conveying a plurality of objects of different types is provided at a total data rate (R) less than or equal to a maximum allowed total data rate (RM), characterized by:

  • a step (22b) in which for each object of the data stream a relationship (11b) is established between different encoded data rates (Ri) used for transmitting the object and a resulting corresponding quality (Qi) indicating a measure of quality for the transmitted object; and

    a step (33) in which, using the established relationships (11b), for an object included in the multimedia data stream and having a generally low value of quality (Qj) based on a currently selected data rate (Rj) compared to values of quality (Qk) for other objects of the multimedia data stream based on currently selected values of data rate values (Rk) for the other objects, a higher data rate value (R′

    j) is selected, provided that the higher data rate value (R′

    j) does not result in the total data rate (R) exceeding the maximum allowed total data rate (RM)

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