US PATENT SUBCLASS 348 / 632
.~ Sound muting

Current as of: June, 1999
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348 /   HD   TELEVISION

571  DF  IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION {34}
632.~ Sound muting {1}
633  DF  .~.~> Including picture blanking

DEFINITION

Classification: 348/632

Sound muting:

(under subclass 571) Subject matter including an apparatus for suppressing the sound portion of the television signal at selected times.

SEE OR SEARCH CLASS

455, Telecommunications,

194.1, for silent tuning.