Input and output circuit apparatus

Details Input and output circuit apparatus Input and output circuit apparatus

2009-08-14

2010-12-28

Cho, James (Department: 2819)

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Signal level or switching threshold stabilization

C326S082000, C326S086000

Reexamination Certificate

active

07859300

ABSTRACT:
An input and output circuit apparatus includes a signal generating circuit configured to generate a first signal, an input and output circuit configured to receive the first signal from the signal generating circuit and a second signal to generate an output signal responsive to the first signal and the second signal, an operation test circuit having substantially an identical circuit configuration to the input and output circuit, and configured to receive the first signal from the signal generating circuit and a third signal to generate an output signal responsive to the first signal and the third signal, a check circuit configured to generates a check signal indicative of an operating condition of the operation test circuit in response to the output signal of the operation test circuit, and an adjustment circuit configured to adjust the signal generating circuit in response to the check signal output from the check circuit.

REFERENCES:
patent: 5568068 (1996-10-01), Ota et al.
patent: 6023174 (2000-02-01), Kirsch
patent: 7088160 (2006-08-01), Harms et al.
patent: 2002/0005743 (2002-01-01), Tanaka
patent: 2004/0100838 (2004-05-01), Tamura et al.
patent: 2002-026712 (2002-01-01), None
patent: 2004-030338 (2004-01-01), None
patent: 2004-172980 (2004-06-01), None
patent: 2005-217949 (2005-08-01), None

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