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:
Jun. 10, 1997
Filed:
Oct. 12, 1994
Hiroyuki Konishi, Himeji, JP;
Koichi Sugiyama, Nagoya, JP;
Fujitsu Ten Limited, Hyogo, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Abstract
An electrical control apparatus for the air bag system capable of inhibiting the diagnosis of back-up capacitors when a diagnosing routine is initiated by an extraneous noise. In a main routine executed by a microcomputer provided in an electrical control apparatus for an air-bag system, data stored in a specific address of a volatile memory is read out, and it is determined whether or not its value is the same as a fixed value. If the result is affirmative, it is determined that the main routine is started by an extraneous noise, an ignition flag IG is reset, and the diagnosis of the back-up capacitors is inhibited. On the other hand, if the data does not have the same value as the fixed value, it is determined that the ignition switch is turned on again after it has been turned off, the IG is set, and the diagnosis for back-up capacitors is carried out.