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. 02, 2012
Filed:
Jan. 09, 2009
Michio Nakamura, Toyoake, JP;
Toru Itabashi, Anjo, JP;
Michio Nakamura, Toyoake, JP;
Toru Itabashi, Anjo, JP;
Denso Corporation, Kariya, JP;
Abstract
In an electronic control apparatus for vehicles, there is provided a main microcomputer activated when a given activation condition is met and a sub-microcomputer to which a power control signal controlling power supply to the sub-microcomputer is supplied. A first power supply unit supplies, via a first supply line, power supply voltage to the main microcomputer for activation, and a second power supply unit supplies, via a second supply line different from the first supply line, power supply voltage to the sub-microcomputer for activation when the sub-microcomputer receives the power control signal. The main microcomputer determines whether or not the sub-microcomputer should be made to operate and performs a switchover between output and non-output of the power control signal to the second power supply unit based on the determined results, whereby the power supply to the sub-microcomputer is controlled.