Television – Receiver circuitry
Reexamination Certificate
2006-11-07
2006-11-07
Lee, Michael H. (Department: 2622)
Television
Receiver circuitry
C348S726000, C455S020000, C455S353000, C725S081000
Reexamination Certificate
active
07133082
ABSTRACT:
An outdoor-antenna digital television receiver system has an electrically controlled remote tuner located close to the antenna. In response to a remote control signal, the remote tuner selects a particular radio-frequency digital television signal to be received, converts that RF DTV signal to an intermediate-frequency digital television signal of prescribed carrier frequency, and drives a downlead transmission line, preferably a coaxial cable. Indoors, the downlead transmission line is provided with an echo-free termination This echo-free termination may be in a “set-top” box that includes a frequency up-conveter that converts the IF DTV signal back to an RF DTV signal for reception by a conventional digital television receiver. Alternatively, the echo-free termination may be in a special DTV receiver without a local tuner. In such a special DTV receiver the IF DTV signal developed across the echo-free termination is supplied to circuitry for demodulation and analog-to-digital conversion, which circuitry supplies digitized baseband DTV signal.
REFERENCES:
patent: 3575661 (1971-04-01), Slavik
patent: 4023108 (1977-05-01), Torii
patent: 4145720 (1979-03-01), Weintraub et al.
patent: 4205269 (1980-05-01), Watanabe
patent: 4551688 (1985-11-01), Craiglow
patent: 4608710 (1986-08-01), Sugiura
patent: 4670790 (1987-06-01), Sawada et al.
patent: 5809088 (1998-09-01), Han
patent: 6118499 (2000-09-01), Fang
LandOfFree
Digital television receiver with remote tuner for driving... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital television receiver with remote tuner for driving..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital television receiver with remote tuner for driving... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3661341