Pulse or digital communications – Transmitters – Antinoise or distortion
Reexamination Certificate
2006-10-13
2008-09-30
Bocure, Tesfaldet (Department: 2611)
Pulse or digital communications
Transmitters
Antinoise or distortion
C375S297000
Reexamination Certificate
active
07430249
ABSTRACT:
The present invention is a carrier state judging device having a multiplexing unit multiplexing carrier signals to be inputted in parallel, output control units inputted to the multiplexing unit and performing ON/OFF control of outputs of the carrier signals inputted to the output control units themselves according to predetermined ON/OFF setting values, frequency shift units and giving predetermined frequency shift quantities to the carrier signals inputted to the frequency shift units themselves, a detection unit detecting as to whether or not there is the carrier signal flowing through on each carrier signal transmission path, and a determining unit determining a state of the carrier signals multiplexed by the multiplexing unit on the basis of the ON/OFF setting value with respect to each of the output control units, the frequency shift quantity with respect to each of the frequency shift units and a result of the detection by the detection unit.
REFERENCES:
patent: 6864745 (2005-03-01), Ode et al.
patent: 2004/0212428 (2004-10-01), Ode et al.
patent: 2005/0226346 (2005-10-01), Ode et al.
patent: 2002-305489 (2002-10-01), None
Funyu Yasuhito
Ohba Takeshi
Shako Hideharu
Bocure Tesfaldet
Fujitsu Limited
Hanify & King P.C.
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