Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1990-04-25
1991-07-02
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
455212, 330 51, H04N 560, H03F 126
Patent
active
050290053
ABSTRACT:
In a television receiver apparatus is provided for muting an audio power amplifier having continuous operating supply voltage applied thereto from a standby power supply even when the receiver is in an "off" condition so that spurious noise and hum coupled to the power amplifier will not be amplified and heard by the viewer. The muting is applied via a microprocessor controller which controls and senses the power supply status of the receiver as well as mutes the power amplifier in both the "off" and the "on" conditions.
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NEC Corp. of Japan Data Sheets for uPC1188H Integrated Circuit Audio Power Amplifier.
Britton Howard W.
Emanuel Peter M.
Powell Mark R.
RCA Licensing Corporation
Tripoli Joseph S.
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