US PATENT SUBCLASS 348 / 695
.~.~ Level inserted during keying signals (e.g., keyed clamp)

Current as of: June, 1999
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348 /   HD   TELEVISION

571  DF  IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION {34}
691  DF  .~ DC insertion {6}
695.~.~ Level inserted during keying signals (e.g., keyed clamp)

DEFINITION

Classification: 348/695

Level inserted during keying signals (e.g., keyed clamp):

(under subclass 691) Subject matter including circuitry for adding or setting the DC bias of a TV signal at selected times by a control signal.