Electrical audio signal processing systems and devices – Binaural and stereophonic – Broadcast or multiplex stereo
Reexamination Certificate
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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Chin Allan P.
Lester David P.
Zoso Luciano
Balconi-Lamica Michael J.
Chin Vivian
Freescale Semiconductor Inc.
Lao Lun-See
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