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:
Mar. 22, 2005
Filed:
Feb. 25, 2003
Osamu Koga, Tokyo, JP;
Koji Uno, Tokyo, JP;
Yasuharu Kawamura, Tokyo, JP;
Niles Parts Co., Ltd., , JP;
Abstract
Abnormality of a comparator is to be detected while it is assembled in a control apparatus. An output OUT of a comparatoris connected to a first analog data input portin addition to an input portof a microcomputer. A pin Pas a signal input terminal of the comparator is connected to a second output portcapable of outputting an H or L microcomputer signal MO of the microcomputer and also to a second analog data input port. An abnormality judgment portionof the microcomputer can detect abnormality due to failure of the comparator itself and failure of the peripheral devices on the basis of the output of the comparator during a normal operation, the comparator output when the microcomputer signal is outputted, and the comparator outputs before and after the output and stop of the microcomputer signal.