Audio control circuit for a computer system system having an ene

Details Audio control circuit for a computer system system having an ene Audio control circuit for a computer system system having an ene

1996-08-20

1998-12-15

Auve, Glenn A.

G06F 132

Patent

active

058505601

ABSTRACT:
To allow sounds to be output by the audio amplifier of a multi-media computer system during periods of CPU inactivity and display screen blanking, a switch is added to the control circuit of the audio amplifier which overrides the energy-saving shut-down program which would normally be activated to cut-off power to both the monitor display screen and the audio amplifier. The switch is in the form of a transistor whose control electrode is connected to both the power supply and to the CPU, such that the transistor can be turned on either by a signal from the main power circuit or by a keyboard activated signal from the CPU's microprocessor, the collector of the transistor being connected to the audio input terminal of the audio amplifier.

REFERENCES:
patent: 5167024 (1992-11-01), Smith et al.
patent: 5483464 (1996-01-01), Song

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