Television signal transmitter capable of eliminating...

Details Television signal transmitter capable of eliminating... Television signal transmitter capable of eliminating...

2006-03-21

2006-03-21

Kostak, Victor R. (Department: 2614)

Television

Television transmitter circuitry

C348S021000, C348S470000, C348S608000

Reexamination Certificate

active

07015981

ABSTRACT:
A television signal transmitter is arranged by a first frequency converter for up-converting an input signal into an intermediate frequency signal, and a second frequency converter for down-converting the intermediate frequency signal into a television signal of any of channels within a predetermined output frequency band. In this television transmitter, a picture intermediate frequency of the intermediate frequency signal is set to be higher than a maximum frequency of the output frequency band, and is set to be lower than a doubled picture frequency of any one of the channels within the output frequency band by 1.25 MHz.

REFERENCES:
patent: 4622694 (1986-11-01), Weber et al.
patent: 6377314 (2002-04-01), Collins et al.
patent: 6411342 (2002-06-01), Tatsuta
patent: 6724441 (2004-04-01), Choi
patent: 2001-111903 (2001-04-01), None

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