Modulators – Pulse or interrupted continuous wave modulator – Including stabilization or alternatively distortion – noise...
Reexamination Certificate
2011-05-10
2011-05-10
Mis, David (Department: 2817)
Modulators
Pulse or interrupted continuous wave modulator
Including stabilization or alternatively distortion, noise...
C332S109000
Reexamination Certificate
active
07940141
ABSTRACT:
A first situation indicating that the system is in a power-on situation or an un-mute situation, or a second situation indicating that the system is in a power-off situation or in a mute situation, is detected. When the first situation is detected, a differential PWM signal including a plurality of pulses each having a gradually increased or reduced width and the subsequent pulse train of 50% duty cycle pulses is generated and, if the output of an audio processor is in a stable situation, sent to the amplifier via a multiplexer. When the second situation is detected, the differential PWM signal including a plurality of pulses each having a gradually reduced width and the subsequent pulse train of no signal is generated and, at the same time, the generated pulses are sent to the amplifier via the multiplexer.
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Asahi Kasei Microdevices Corporation
Mis David
Morgan & Lewis & Bockius, LLP
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