Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Current driver
Reexamination Certificate
2006-08-29
2006-08-29
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Current driver
C327S333000, C375S219000
Reexamination Certificate
active
07098701
ABSTRACT:
A first receiving terminal and a second receiving terminal are connected to a first signal transmission line and a second signal transmission line, respectively, and receive the input of transmission signals. A first resistor and a second resistor convert current signals contained in the transmission signals into voltage. A comparator inputs the respective voltages converted by the first and the second resistor, and outputs, as an output signal, a voltage corresponding to a difference between their voltages. A first transistor connected to an end of the first resistor and a second transistor connected to an end of the second resistor reduce the variation in a transmission voltage signal due to the variation in the current signals contained in the transmission signals. A third transistor connected to the other end of the first resistor causes to drop power-supply voltage so as to generate a control signal. The control signal is turned into a gate voltage of the second transistor in a crosswise manner. A fourth transistor connected to the other end of the second resistor operates in the similar manner to the third transistor.
REFERENCES:
patent: 5471498 (1995-11-01), Kuo
patent: 6456111 (2002-09-01), Yamaguchi
patent: 3-283741 (1991-12-01), None
patent: 2001-053598 (2001-02-01), None
Copy of Japanese Office Action dated Dec. 13, 2005.
Murata Makoto
Saitoh Shinichi
Cantor & Colburn LLP
Le Dinh T.
Rohm & Co., Ltd.
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