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Title:
TELEVISIOIN SIGNAL TRANSMITTER
Document Type and Number:
Japanese Patent JP2001111903
Kind Code:
A
Abstract:

To avoid disturbance due to a signal resulting from a frequency differ ence of oscillated signals between respective 1st local oscillators of two fre quency converters.

The 1st and 2nd frequency converters 1, 2 respectively have 1st mixers 1b, 2b that frequency-convert a received intermediate frequency band television signal into a 1st intermediate frequency band television signal, 1st local oscillators 1c, 2c that give a 1st local oscillation signal to the 1st mixers 1b, 2b, 2nd mixers 1f, 2f that frequency-convert the 1st intermediate frequency band television signal into a broadcast channel television signal, and 2nd local oscillators 1g, 2g that give a 2nd local oscillation signal to the 2nd mixers 1f, 2f. The frequency of the 1st local oscillation signal being the output of the 1st frequency converter 1 is differentiated by 0.25 MHz or over from the frequency of the 1st local oscillation signal being the output of the 2nd frequency converter 2.


Inventors:
MAEDA KAZUYUKI
Application Number:
JP28966299A
Publication Date:
April 20, 2001
Filing Date:
October 12, 1999
Export Citation:
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Assignee:
ALPS ELECTRIC CO LTD
International Classes:
H04N5/40; H03D7/16; H04B1/04; H04N7/10; (IPC1-7): H04N5/40; H04B1/04



 
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