Television tuner

Television – Receiver circuitry – Tuning

Reexamination Certificate

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Details

C348S720000, C348S726000, C348S731000, C455S150100, C455S179100, C455S333000

Reexamination Certificate

active

06995808

ABSTRACT:
A front end tuner for receiving TV signals and the like includes a frequency conversion circuit including a mixer for beating a local signal with received signals within a predetermined band of frequencies to provide selected signals within a predetermined band of frequencies to provide selected signals within a predetermined channel band of frequencies. A signal converter circuit generates digitally encoded signal representations of the selected signals. The frequency conversion circuit and the signal converter circuit are in a form of an integrated circuit within a semiconductor substrate. In a TV receiver, on-following digital processing of the digitally encoded signals is performed in a microcomputer. In one example a channel selection code is used by the microcomputer to synthesize the local oscillator signal and in another example the signal converter circuit is a codec, responsive to codes from the microprocessor, to supply a control voltage for controlling a local oscillator. From time to time channel selection is automatically fine tuned.

REFERENCES:
patent: 5737035 (1998-04-01), Rotzoll
patent: 5784414 (1998-07-01), Bruekers et al.
patent: 5930488 (1999-07-01), Mitsuishi
patent: 5999793 (1999-12-01), Ben-Efraim et al.
patent: 6091931 (2000-07-01), Ben-Efraim et al.
patent: 6118499 (2000-09-01), Fang
patent: 6177964 (2001-01-01), Birleson et al.
patent: 6243567 (2001-06-01), Saito
patent: RE37326 (2001-08-01), Kim
patent: 6286065 (2001-09-01), Suzuki
patent: 6400419 (2002-06-01), Yamamoto
patent: 6501513 (2002-12-01), Nishimura et al.
patent: 6542203 (2003-04-01), Shadwell et al.
patent: 6675003 (2004-01-01), Dubash et al.
patent: 6714604 (2004-03-01), Tsurumi et al.
patent: 6725463 (2004-04-01), Birleson
patent: 6765626 (2004-07-01), Tanaka
patent: 2002/0005912 (2002-01-01), Yanagi et al.
patent: 2002/0121679 (2002-09-01), Bazarjani et al.
patent: 2004/0061804 (2004-04-01), Favrat et al.

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