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. 25, 2011
Filed:
Oct. 07, 2008
Shinichirou Taguchi, Nukata-gun, JP;
Kenji Yamada, Gamagori, JP;
Akimitsu Inoue, Toyota, JP;
Hideaki Ishihara, Okazaki, JP;
Shinichirou Taguchi, Nukata-gun, JP;
Kenji Yamada, Gamagori, JP;
Akimitsu Inoue, Toyota, JP;
Hideaki Ishihara, Okazaki, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A sub-microcomputer having a sub-CPU and a power supply control section that controls the power supply to a main microcomputer is disposed in addition to the main microcomputer having a main CPU. A sub-clock section that supplies a sub-clock signal having a lower frequency to the sub-microcomputer can change over between a continuous mode and an intermittent mode. When the main CPU gives an operation stop notification to the sub-CPU, the sub-CPU recognizes the notification, stops the power supply to the main microcomputer, and sets the sub-clock section to the intermittent mode. The sub-CPU determines that the operation state condition is satisfied in the period of the intermittent mode, the sub-CPU changes over the sub-clock section to the continuous mode to restart the power supply to the main microcomputer.