Electrical audio signal processing systems and devices – Binaural and stereophonic – Broadcast or multiplex stereo
Reexamination Certificate
2006-07-18
2006-07-18
Pendleton, Brian T. (Department: 2644)
Electrical audio signal processing systems and devices
Binaural and stereophonic
Broadcast or multiplex stereo
Reexamination Certificate
active
07079657
ABSTRACT:
A system and method are disclosed for performing digital multi-channel decoding of a BTSC composite audio signal. Analog-to-digital conversion is performed on a composite analog audio signal at a fast clock rate to generate a composite digital audio signal at a first sample rate. Digital frequency compensation is performed on the composite digital audio signal at the first sample rate to generate a compensated composite audio signal. Digital channel demodulation and filtering are performed on the compensated composite audio signal at the first sample rate to generate a first single channel audio signal at a second sample rate.
REFERENCES:
patent: 4747140 (1988-05-01), Gibson
patent: 6664841 (2003-12-01), Cetin et al.
patent: 2003/0087618 (2003-05-01), Li et al.
Crochiere Ronald
Lambert Russ
MacInnis Alexander G.
Nhu Hoang
Wu David Chaohua
Broadcom Corporation
McAndrews Held & Malloy Ltd.
Pendleton Brian T.
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