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:
Jan. 03, 2012
Filed:
Aug. 20, 2008
Kentaro Mochida, Chiryu, JP;
Takahito Nishii, Nagoya, JP;
Yasuhiko Satoh, Kariya, JP;
Masayuki Usami, Nagoya, JP;
Atsushi Kawakubo, Toyota, JP;
Kentaro Mochida, Chiryu, JP;
Takahito Nishii, Nagoya, JP;
Yasuhiko Satoh, Kariya, JP;
Masayuki Usami, Nagoya, JP;
Atsushi Kawakubo, Toyota, JP;
Denso Corporation, Kariya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
In an electronic apparatus, a first microcomputer is monitored by a second microcomputer, which periodically transmits data relating to a main function to the first microcomputer to be processed. The first microcomputer periodically updates a variable value, performs a predetermined calculation operation whose final result should be a specific fixed value, adds that final result to the updated variable value to obtain a sum value, and transmits the sum value and updated variable value concurrently to the second microcomputer. The second microcomputer determines that the first microcomputer is operating abnormally if the difference between the received sum value and variable value is not equal to the specific fixed value.