Television tuner

Details Television tuner Television tuner

1997-08-05

2000-08-22

Powell, Mark R.

Television

Receiver circuitry

Tuning

348732, 348733, 3451802, 3451804, 3451882, 3451911, H04B 126, H04B 116, H04N 548

Patent

active

061080500

ABSTRACT:
Band characteristics between reception bands or reception channels are uniformed. There is provided a television tuner comprising a first tuning circuit which can be tuned to a television channel frequency in a first frequency band, a first amplification circuit for amplifying an output signal from the first tuning circuit, a second tuning circuit which can be tuned to a television channel frequency in a second frequency band, and a second amplification circuit for amplifying an output signal from the second tuning circuit, wherein, to at least one of the first and second tuning circuits, a damper resistor for decreasing Q of the tuning circuit when the tuning circuit is tuned to a frequency in a low-frequency band including each lowest channel in the first or second frequency band is connected.

REFERENCES:
patent: 4189678 (1980-02-01), Sakamoto
patent: 4247953 (1981-01-01), Shinagawa
patent: 4303944 (1981-12-01), Kitamura
patent: 4326295 (1982-04-01), Matsumoto et al.
patent: 4418427 (1983-11-01), Muterspaugh
patent: 4418428 (1983-11-01), Evans
patent: 4691378 (1987-09-01), Kumamoto
patent: 5089754 (1992-02-01), George
patent: 5208517 (1993-05-01), Beppu
patent: 5214399 (1993-05-01), Hohmann
patent: 5428828 (1995-06-01), Pugel
patent: 5786668 (1998-07-01), Lim

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