System on a chip with multiple independent outputs

Details System on a chip with multiple independent outputs System on a chip with multiple independent outputs

2007-04-30

2010-02-02

Mai, Lam T (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C713S322000, C348S105000, C386S349000

Reexamination Certificate

active

07656331

ABSTRACT:
An audio output circuit includes a DAC module, a line out circuit, and a headphone amplifier circuit. The digital to analog conversion (DAC) module is coupled to convert an audio component of digitized multimedia data into an analog audio signal. The line out circuit is coupled to amplify the analog audio signal based on a line out volume setting. The headphone amplifier is coupled to amplify the analog audio signal based on a volume setting to produce an amplified analog audio signal.

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Sigmatel STMP3600 Product Brief, SIGMATEL Mixed-Signal Multimedia Semiconductors, 2 pages, 2006.
IDT Product Brief, Value-Line Two-Channel AC'97 CODECS With Headphone Drive and SPDIF Output, pp. 1-6, 2006.

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