RF/IF digital demodulation of video and audio

Television – Receiver circuitry – Tuning

Reexamination Certificate

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Details

C348S554000

Reexamination Certificate

active

06999132

ABSTRACT:
An apparatus generally comprising a tuner circuit, an analog-to-digital circuit and a converter circuit. The tuner circuit may be configured to generate an intermediate frequency signal having a carrier signal at a first intermediate frequency in response to a first frequency conversion applied to a radio-frequency signal modulated by an analog television signal. The analog-to-digital circuit may be configured to generate a digital intermediate signal having the carrier signal at a second intermediate frequency in response to a digitization of the intermediate frequency signal. The converter circuit may be configured to generate a digital television signal representative of the analog television signal at a baseband frequency in response to a demodulation of the digital intermediate signal.

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patent: 913924 (1999-05-01), None

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