| 348 / | HD | TELEVISION |
|
| 571 | DF | IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION {34} |
| 578 | DF | .~ Special effects {3} |
| 584 |  | .~.~ Combining plural sources {7} |
| 585 | DF | .~.~.~> Including priority key |
| 586 | DF | .~.~.~> Foreground/background insertion {1} |
| 588 | DF | .~.~.~> Multiple distinct images (e.g., splitscreen) |
| 589 | DF | .~.~.~> Including insertion of characters or graphics (e.g., titles) |
| 590 | DF | .~.~.~> Specified details of key signal generation or processing {3} |
| 598 | DF | .~.~.~> Specified details of signal combining {2} |
| 601 | DF | .~.~.~> Marker or pointer generator |