US PATENT SUBCLASS 348 / 672
.~.~ Using histogram

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}
672.~.~ Using histogram

DEFINITION

Classification: 348/672

Using histogram:

(under subclass 671) Subject matter including circuitry which accumulates data representing past characteristics of the TV signal being processed.