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Patent Searching and Data


Title:
SINGLE BAND ELECTRONIC TUNER FOR CATV PCM MUSIC BROADCAST RECEIVER
Document Type and Number:
Japanese Patent JP05259932
Kind Code:
A
Abstract:

PURPOSE: To provide an inexpensive single band electronic tuner for CATV PCM music broadcast receiver by providing a 1st or 2nd receivable band.

CONSTITUTION: A mixer 43s of a double band electronic tuner performs the conversion of frequency based on the oscillation frequency outputted from a local oscillation circuit 43u to secure about 44.0MHz. A 1st band can continuously receive the frequency of the signals inputted to an input terminal 43a in a range covering about 72MHz up to about 2.2 times as high as this frequency. Meanwhile a 2nd band can continuously receive the frequency of the input signal of the terminal 43a in a range covering about 1/2.2 highest frequency of the CATV broadcast up to the highest frequency. Then one of both bands can be selected. Therefore a 2nd tuner block which receives the UHF band and a band switching means can be omitted. Then an inexpensive single band electronic tuner is obtained.


Inventors:
Akatsuka, Terumoto
Application Number:
JP1992000057707
Publication Date:
October 08, 1993
Filing Date:
March 16, 1992
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
H04B1/26; H04N7/16; (IPC1-7): H04B1/26; H04N7/16