Modulated audio amplifier output enable control

Amplifiers – Combined with automatic amplifier disabling switch means

Reexamination Certificate

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C330S254000

Reexamination Certificate

active

07990212

ABSTRACT:
A modulated amplifier output enable control eliminates audible pops when enabling and disabling an audio amplifier output stage. The output of the audio amplifier is transitioned between an enabled state and a disabled state using a modulated control signal that enables and disables the output of the audio amplifier. Durations of the enabled state vs. the disabled state of the amplifier are adjusted to cause a transition between a fully disabled state and a fully enabled state of the audio amplifier so that the transition between the disabled state and the enabled state of the amplifier output is inaudible.

REFERENCES:
patent: 6472935 (2002-10-01), King et al.
patent: 6501331 (2002-12-01), Adar
patent: 6538590 (2003-03-01), Gaboriau et al.
patent: 7224218 (2007-05-01), Jiang et al.
patent: 7259619 (2007-08-01), Chang et al.
patent: 7554399 (2009-06-01), Gaboriau et al.
patent: 7554409 (2009-06-01), Zhang et al.
patent: 7570118 (2009-08-01), Gaboriau et al.
patent: 7782138 (2010-08-01), Dally et al.
National Semiconductor, “LM4766 Datasheet”, Mar. 2006, US.
U.S. Appl. No. 12/493,054, filed Jun. 26, 2009, Tsang et al.

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