Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2005-02-23
2008-08-26
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S259000, C375S261000, C375S268000, C375S279000, C455S059000, C370S341000
Reexamination Certificate
active
07418047
ABSTRACT:
A first signal generation section11generates a baseband modulation signal for an ASK modulation scheme from transmission data. A second signal generation section12generates a pair of baseband modulation signals for a non-ASK modulation scheme from transmission data. When performing non-ASK modulation, a switch15connects between an input terminal d and an output terminal and outputs the baseband modulation signals based on the non-ASK modulation. When performing ASK modulation such that the transmission power ratio of the ASK modulation scheme to the non-ASK modulation scheme is a factor of 1, a switch14connects between an input terminal b and an output terminal and the switch15connects between an input terminal c and the output terminal. When performing ASK modulation such that the transmission power ratio is a factor of 2, the switch14connects between an input terminal a and the output terminal and the switch15connects between the input terminal c and the output terminal.
REFERENCES:
patent: 6807221 (2004-10-01), Kim et al.
patent: 6965639 (2005-11-01), Uesugi
patent: 7069489 (2006-06-01), Murakami et al.
patent: 7187716 (2007-03-01), Inoue
patent: 7210202 (2007-05-01), Hamada
patent: 2003/0157888 (2003-08-01), Inoue
patent: 2004/0071079 (2004-04-01), Han
patent: 2003-244260 (2003-08-01), None
Mori Ken-ichi
Takai Hitoshi
Tanaka Koichiro
Lam Kenneth
Liu Shuwang
Matsushita Electric - Industrial Co., Ltd.
Wenderoth , Lind & Ponack, L.L.P.
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