US PATENT SUBCLASS 348 / 687
.~ Brightness control

Current as of: June, 1999
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348 /   HD   TELEVISION

571  DF  IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION {34}
687.~ Brightness control {2}
688  DF  .~.~> By subtracting averaged active video portion (e.g., flare)
689  DF  .~.~> With DC clamping

DEFINITION

Classification: 348/687

Brightness control:

(under subclass 571) Subject matter including circuitry for changing the DC bias of a TV signal based on some manually set criterion.