US PATENT SUBCLASS 348 / 682
.~.~.~ Sync or blanking

Current as of: June, 1999
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348 /   HD   TELEVISION

571  DF  IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION {34}
671  DF  .~ Gray scale transformation {5}
678  DF  .~.~ Automatic range control (e.g., AGC, automatic contrast control) {5}
682.~.~.~ Sync or blanking {2}
683  DF  .~.~.~.~> Noise reduction or elimination
684  DF  .~.~.~.~> Keyed

DEFINITION

Classification: 348/682

Sync or blanking:

(under subclass 678) Subject matter wherein the variations in the input signal are determined by the sync or blanking levels in the video signal.