Circuit for reducing audio amplifier noise during powering on an

Details Circuit for reducing audio amplifier noise during powering on an Circuit for reducing audio amplifier noise during powering on an

1998-03-09

2000-03-21

Sheikh, Ayaz R.

Electrical computers and digital processing systems: support

Computer power control

Power sequencing

G06F 1300

Patent

active

060414162

ABSTRACT:
An audio power management system for a computer to eliminate noise signals associated with the power-down and power-up operations of the computer during power management operations is disclosed. The audio power management system asserts a speaker mute signal before power is removed from the amplifier to reduce transient conditions. During power up, the speaker mute signal is applied to the amplifier for a period after power is applied to the amplifier. This control is done from a single digital output.

REFERENCES:
patent: 4441086 (1984-04-01), Koslow et al.
patent: 4673889 (1987-06-01), Cini et al.
patent: 4674031 (1987-06-01), Siska, Jr.
patent: 4710771 (1987-12-01), Banno et al.
patent: 5144441 (1992-09-01), Sparks et al.
patent: 5307025 (1994-04-01), Colvin et al.
patent: 5410713 (1995-04-01), White
patent: 5428494 (1995-06-01), Ahuja
patent: 5442617 (1995-08-01), Kim
patent: 5734729 (1998-03-01), Tran
patent: 5740453 (1998-04-01), Lada, Jr.
patent: 5794057 (1998-08-01), Lada, Jr.
patent: 5862390 (1999-01-01), Ranjan
patent: 5909583 (1999-06-01), Hayes et al.
patent: 5919263 (1999-07-01), Kikinis et al.
LM 1971 .mu.POT.TM. Digitally controlled 62 dB Audio Attenuator with Mute.
LM 1973 .mu.POT.TM. 3-Channel 76dB Audio Attenuator with Mute.
LM 1972 .mu.POT.TM. 2-Channel 78dB Audio Attenuator with Mute.

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