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:
Oct. 10, 2000
Filed:
Oct. 23, 1998
Satoru Matsumoto, Toyota, JP;
Kazuhiko Hayashi, Aichi-ken, JP;
Toyota Joshida Kabushiki Kaisha, Toyota, JP;
Abstract
To prevent the engine from becoming able to be started by a cut-off of the communication line, for example, an engine control ECU 20 contains a reference code which is used to compare with a personal ID code transmitted from a transponder 12 of a key 10. A key insertion detecting switch 22 start this comparison when the insertion of the key is detected, and finishes the comparison before the engine is started. When a trouble of the key insertion detecting switch 22 is detected, a code collating section 20b collates the ID code with a reference code until the number of revolutions of the engine 30 exceeds 500 rpm. Therefore, even when the key insertion detecting switch 22 becomes out of order, it is possible to recognize the operation with a correct key, and give a permission to start the engine 30.