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. 30, 2001
Filed:
May. 28, 1999
Apparatus and method for controlling electric power supply in nonvolatile memory rewriting operation
Hirokazu Komori, Okazaki, JP;
Denso Corporation, Kariya, JP;
Abstract
A boot program or an internal combustion engine control program and data stored in a flash ROM is rewritten in a flash ROM rewriting processing by a microcomputer of an ECU. In this instance, a main relay control circuit is controlled to hold an electric power supply from a main relay, as the rewriting is disabled to be made repeatedly once the electric power supply is interrupted in the midst of the boot program. An entire electric power supply is interrupted by an ignition switch to enable the interruption in the midst of rewriting with respect to other programs. Thus, the electric power supply at the time of the program rewriting can be set to hold/stop in correspondence with the importance of the programs stored in the flash ROM.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile