BTSC encoder and integrated circuit

Details BTSC encoder and integrated circuit BTSC encoder and integrated circuit

2008-07-22

2008-07-22

Chin, Vivian (Department: 2615)

Electrical audio signal processing systems and devices

Binaural and stereophonic

Broadcast or multiplex stereo

C348S485000

Reexamination Certificate

active

10744619

ABSTRACT:
A BTSC encoder includes dual channel ADC, sync separator, audio processor, filtering device, and a composite audio signal generating device. The filtering device includes a first filter for providing a filtered L+R signal, and a second filter for providing at least one of: i) a filtered and combined pilot and modulated L−R signal and ii) separately filtered pilot and modulated L−R signals. The composite audio signal generating device is responsive to the filtered L+R signal, and at least one of i) the filtered and combined pilot and modulated L−R signal and ii) the separately filtered pilot and modulated L−R signals for generating and outputting a composite analog audio signal. In all embodiments, the modulated L−R signal is filtered via an anti-splatter filter.

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patent: 2004/0042621 (2004-03-01), Hausman
patent: 2006/0083384 (2006-04-01), Zoso et al.

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