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} |
593 | DF | .~.~.~.~ Artificial key generation {3} |
595 | .~.~.~.~.~ Fades signal generator |