Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2006-10-17
2006-10-17
Callahan, Timothy P. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S087000, C330S069000
Reexamination Certificate
active
07123080
ABSTRACT:
An input circuit has a differential amplification circuit which converts a differential signal to a single end signal to output the single end signal, an attenuation circuit which attenuates a first input signal to output the attenuated signal to the differential amplification circuit, a capacitor in which one end thereof is connected to a first input terminal to which the first input signal is inputted, and another end thereof is connected to an output side of the differential amplification circuit, a buffer to which the single end signal outputted from the differential amplification circuit and a signal transmitted through the capacitor are inputted, and which outputs the output signal, and a feedback circuit which outputs a signal based on an output signal outputted from the buffer and the second input signal to the differential amplification circuit.
REFERENCES:
patent: 4158178 (1979-06-01), Schade, Jr.
patent: 4480230 (1984-10-01), Brehmer et al.
patent: 5315266 (1994-05-01), Lorenz
patent: 6229348 (2001-05-01), Matsumoto
patent: 7-67053 (1995-07-01), None
patent: 3154459 (2001-02-01), None
Furukawa Atsushi
Saito Takuya
Englund Terry L.
Yokogawa Electric Corporation
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