US PATENT SUBCLASS 348 / 441
FORMAT CONVERSION

Current as of: June, 1999
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348 /   HD   TELEVISION

441FORMAT CONVERSION {9}
442  DF  .~> Involving polar to Cartesian or vice versa
443  DF  .~> Involving both line number and field rate conversion (e.g., PAL to NTSC) {1}
445  DF  .~> Conversion between standards with different aspect ratios
446  DF  .~> Progressive to interlace
447  DF  .~> Field rate type flicker compensating
448  DF  .~> Line doublers type (e.g., interlace to progressive IDTV type) {3}
453  DF  .~> Specified chrominance processing {3}
458  DF  .~> Changing number of lines for standard conversion
459  DF  .~> Changing number of fields for standard conversion

DEFINITION

Classification: 348/441

FORMAT CONVERSION:

(under the class definition) Subject matter including particular methods or apparatus for converting one format into another format.

(1) Note. Examples of converters found herein are NTSC to PAL or SECAM, High Vision to NTSC, or field sequential color to simultaneous color signal (e.g., NTSC).