US PATENT SUBCLASS 348 / 625
.~ Transition or edge sharpeners

Current as of: June, 1999
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348 /   HD   TELEVISION

571  DF  IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION {34}
625.~ Transition or edge sharpeners {4}
626  DF  .~.~> Scanning velocity modulation
627  DF  .~.~> Including processing to prevent the addition of noise (e.g., coring enhancement signal, noise responsive peaking control)
628  DF  .~.~> Vertical transition {1}
630  DF  .~.~> Color television processing {1}

DEFINITION

Classification: 348/625

Transition or edge sharpeners:

(under subclass 571) Subject matter including a specific circuitry for reducing the time of the amplitude transitions or for increasing the size of the amplitude transition.

(1) Note. Most systems only sharpen transition over some given amplitude.

(2) Note. Search 606 for the systems that sharpen over the given amplitude but which systems also reduce transition under the given amplitude.