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:
Apr. 04, 2000
Filed:
Jun. 16, 1999
Applicant:
Inventors:
Hirokazu Komori, Okazaki, JP;
Haruhiko Kondo, Anjo, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518504 ; 36518508 ; 36518533 ;
Abstract
An electronic control unit includes a flesh memory for storing control programs and data. A count information storage region for retaining a rewrite count of the flash memory is set up at a plurality of consecutive addresses in the flash memory. Each time rewriting processing is carried out by a CPU for the flash memory in the electronic control unit, a data-unwritten address in the count information storage region is selected in ascending order of addresses starting from the top address thereof, and numeric value data representing a rewrite count of the flash memory is written to the address thus selected.