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:
Mar. 11, 2008
Filed:
Sep. 30, 2004
Masahiko Sayama, Hyogo, JP;
Shozo Kanzaki, Tokyo, JP;
Masahiko Sayama, Hyogo, JP;
Shozo Kanzaki, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
The car-mounted electronic control device is constructed to include a main control circuit unit to be powered with a car-mounted battery through a switching element and a main power source circuit, and a starting timer circuit unit powered at all times through an auxiliary power source circuit. The timer circuit unit is provided with a sub CPU for acting in synchronism with a high-speed clock signal, and a timing counter for counting the frequency-divided signal of a low-speed clock signal. When a power source switch is opened to interrupt a switching element, the timer circuit unit measures a target awakening time periodically by contrasting the period of the low-speed clock signal to the period of the high-speed clock signal.