Compactly-designed television receiver

Details Compactly-designed television receiver Compactly-designed television receiver

2005-08-09

2005-08-09

Lee, Michael H. (Department: 2614)

Television

Receiver circuitry

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

C348S736000

Reexamination Certificate

active

06927805

ABSTRACT:
A television receiver intended to decrease the number of expensive SAW filters to achieve low cost and a compact design. A trap circuit is interposed between a mixer and a SAW filter. During reception of a television signal, one of the trap frequencies at which the trap circuit responds is set to a video intermediate frequency on a television channel adjoining above an intermediate frequency band or a nearby frequency. The other trap frequency is set to a sound intermediate frequency on the adjoining television channel or a nearby frequency. During reception of an FM broadcast signal, the frequency of the FM broadcast signal is converted into a color subcarrier frequency on the intermediate frequency band or a nearby frequency. One of the trap frequencies is set to a substantially middle frequency between the video intermediate frequency and color subcarrier frequency on the intermediate frequency band.

REFERENCES:
patent: 4639786 (1987-01-01), Tamer et al.
patent: 4660087 (1987-04-01), Rumreich
patent: 5285179 (1994-02-01), Wignot et al.
patent: 6795128 (2004-09-01), Yamamoto
patent: 6-224797 (1994-08-01), None
patent: 2002-64757 (2002-02-01), None

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