US PATENT SUBCLASS 348 / 591
.~.~.~.~ Self keyers (e.g., key generated from video being mixed


Current as of: June, 1999
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348 /   HD   TELEVISION

571  DF  IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION {34}
578  DF  .~ Special effects {3}
584  DF  .~.~ Combining plural sources {7}
590  DF  .~.~.~ Specified details of key signal generation or processing {3}
591.~.~.~.~ Self keyers (e.g., key generated from video being mixed {1}
592  DF  .~.~.~.~.~> Chroma key (e.g., hue detector)


DEFINITION

Classification: 348/591

Self keyers (e.g., key generated from video being mixed):

(under subclass 590) Subject matter including a circuitry for generating the combining control signal from one of the image signals.