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System and methods for preparing multimedia data using digital video data compression

  • US 6,675,387 B1
  • Filed: 04/06/1999
  • Issued: 01/06/2004
  • Est. Priority Date: 04/06/1999
  • Status: Expired due to Term
First Claim
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1. In a digital video communication system including a server, a method of preparing digital video data using digital video data compression in a computer at said server for transmission to a settop box at a user terminal coupled to said server by a digital video signal distribution system, the method comprising:

  • pre-rendering a bitmap to create a compressed form of the bitmap, the bitmap including content of a series of video images of the digital video data, the video images having a full-sized area; and

    determining a viewable area of the video images to be displayed, the viewable area of the video images is smaller than the full-sized area, wherein;

    the content includes at least one of fixed content and variable content, the fixed content having a lifetime in the series of video images, and portions of the variable content having lifetimes less than the lifetime of the fixed content; and

    the method further comprises encoding the content as at least one data set formatted as at least one fat macroblock and a fat macroblock header, said fat macroblock header identifying a plurality of macroblocks within said full-sized area, said plurality of macroblocks forming a fat macroblock from an array of rows and columns of macroblocks of said full-sized area.

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