US PATENT SUBCLASS 348 / 499
.~.~ Using frequency shifting (e.g., heterodyne)

Current as of: June, 1999
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497  DF  FLUTTER OR JITTER CORRECTION (E.G., DYNAMIC REPRODUCTION) {1}
498  DF  .~ Specified color {1}
499.~.~ Using frequency shifting (e.g., heterodyne)

DEFINITION

Classification: 348/499

Using frequency shifting (e.g., heterodyne):

(under subclass 498) Subject matter wherein the chrominance signal is corrected by mixing another frequency.