Telecommunications – Receiver or analog modulated signal frequency converter – Frequency conversion between signal source and receiver
Reexamination Certificate
2009-04-15
2010-10-05
Urban, Edward (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency conversion between signal source and receiver
C455S130000, C455S232100, C455S234100, C455S240100, C455S245100, C455S251100, C455S136000, C375S345000, C375S326000, C375S327000, C375S338000, C375S339000
Reexamination Certificate
active
07809341
ABSTRACT:
A received low-frequency standard radio wave, which is an amplitude modulation signal, is converted to an intermediate frequency signal Sa, and is output to a detection circuit and an AGC circuit. The detection circuit and AGC circuit generates an RF control signal Sf1and IF control signal Sf2from the input intermediate frequency signal Sa, and controls an RF control circuit and IF control circuit by outputting the generated RF control signal Sf1and IF control signal Sf2to the RF control circuit and IF control circuit. By this a radio wave reception device can speed up AGC operation.
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Casio Computer Co. Ltd.
Chen Junpeng
Frishauf Holtz Goodman & Chick P.C.
Urban Edward
LandOfFree
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