Television tuner being capable of receiving FM broadcast signal

Details Television tuner being capable of receiving FM broadcast signal Television tuner being capable of receiving FM broadcast signal

2004-08-23

2008-08-19

Hsia, Sherrie (Department: 2622)

Television

Receiver circuitry

Television receiver adapted to receive radio broadcast or in...

C348S731000

Reexamination Certificate

active

07414675

ABSTRACT:
A television tuner contains a mixer1to which a television signal or an FM broadcast signal is input and outputs an intermediate frequency signal based on the television signal or an intermediate frequency signal based on the FM broadcast signal, an intermediate frequency tuning circuit2for tuning to the intermediate frequency signals, and an intermediate frequency amplifier3for amplifying the intermediate frequency signal output form the intermediate frequency tuning circuit. The intermediate frequency tuning circuit2and the intermediate frequency amplifier3are connected to each other via switch diodes4and5, the switch diodes are turned ON upon receiving the television signal and turned OFF upon receiving the FM broadcast signal.

REFERENCES:
patent: 6721017 (2004-04-01), Yamamoto
patent: 7030937 (2006-04-01), Yamamoto
patent: 7123309 (2006-10-01), Yoda
patent: A1 2001-157128 (2001-06-01), None
patent: A2 2001-238143 (2001-08-01), None

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