US PATENT SUBCLASS 348 / 484
.~.~ Sound signal

Current as of: June, 1999
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348 /   HD   TELEVISION

469  DF  FORMAT {6}
473  DF  .~ Including additional information {5}
484.~.~ Sound signal {1}
485  DF  .~.~.~> Plural (e.g., stereo or SAP)

DEFINITION

Classification: 348/484

Sound signal:

(under subclass 473) Subject matter wherein the additional information is an audio signal.