The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 28, 2010
Filed:
Aug. 14, 2009
Masaya Kibune, Kawasaki, JP;
Masaya Kibune, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
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.