Amplifiers – Combined with automatic amplifier disabling switch means
Reexamination Certificate
2011-08-02
2011-08-02
Choe, Henry K (Department: 2817)
Amplifiers
Combined with automatic amplifier disabling switch means
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.
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Choe Henry K
Cirrus Logic Inc.
Harris Andrew M.
Mitch Harris Atty at Law, LLC
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