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Method and apparatus that provides a scalable media delivery system

  • US 6,490,627 B1
  • Filed: 06/28/1999
  • Issued: 12/03/2002
  • Est. Priority Date: 12/17/1996
  • Status: Expired due to Term
First Claim
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1. A method of communicating multimedia digital data from a server computer to a client computer comprising the steps of:

  • determining multimedia characteristics of said client computer;

    determining a selected set of adaptive streams containing said multimedia digital data relating to sight and intended to be transmitted to said client computer based upon said determined multimedia characteristics said adaptive streams being stored on a memory of said server computer and formed of a base stream and a plurality of additive streams, said additive streams containing additive data which corresponds to base data associated with said base stream, such that additional additive data from each additive stream provides increasingly greater resolution and wherein said selected set of adaptive streams is derived from a sequence of digital video pictures, each of said digital video pictures containing a plurality of slices, and each of said slices containing a plurality of blocks, each block representing one of luminance and chrominance information, said luminance and chrominance information in each of said blocks being segmented into a base stream and a plurality of additive streams, each said additive stream containing additive data that corresponds to base data associated with said base stream, such that additional additive data from each additive stream provides increasingly greater resolution of said one luminance and chrominance information for each block; and

    transmitting said selected set of adaptive streams from said server computer to said client computer.

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