Patent Catalogue

SUB-PICTURE DATA BY A RUN-LENGTH COMPRESSION RULE

Sub-picture data recorded on a disc is compressed by a run-length method, which is different from main-picture data compressed by a MPEG method.

  • Compression rules of main-picture data and subpicture data are different.
  • Run-length compression for sub-picture data is suited for processing character information like superimposed captions.

[References]

  • DVD Specifications for Read-Only Disc: Part III,Index.5.4.3.2

[Offering Patent]

  • USP5,721,720

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