Television – Receiver circuitry – Tuning
Reexamination Certificate
2006-02-07
2006-02-07
Yenke, Brian P. (Department: 2614)
Television
Receiver circuitry
Tuning
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.
Kovacic Stephen J.
O'Connell Cormac M.
Freedman & Associates
SiGe Semiconductor Inc.
Yenke Brian P.
LandOfFree
Television tuner does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Television tuner, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Television tuner will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3710255