US PATENT SUBCLASS 348 / 657
.~.~.~ Including feedback control

Current as of: June, 1999
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348 /   HD   TELEVISION

571  DF  IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION {34}
655  DF  .~ Color balance or temperature (e.g., white balance) {1}
656  DF  .~.~ Receiver type {1}
657.~.~.~ Including feedback control {1}
658  DF  .~.~.~.~> Including optical sensor to observe display (e.g., CRT)

DEFINITION

Classification: 348/657

Including feedback control:

(under subclass 656) Subject matter including a sensor to detect the operation of the display and a control to control the display depending upon the detected operation.