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:
Jul. 18, 1989
Filed:
Apr. 11, 1988
Applicant:
Inventor:
Kiyoshi Yamakawa, Gifu, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ; G09G / ; H03K / ;
U.S. Cl.
CPC ...
3503 / ; 350332 ; 340784 ; 340813 ; 364136 ; 364184 ; 3072964 ; 307 38 ;
Abstract
In an electronic control system having a main CPU and a slave CPU which is under the control of the main CPU, a power control circuit is provided between the power source and the slave CPU to stop supplying power to the slave CPU until the main CPU starts normal operation when the power to the overall system is turned on. The slave CPU does not start operation until the main CPU becomes capable of normal operation and control over the slave CPU, which prevents unexpected action of the slave CPU and the subordinate control object. The power control circuit is also effective in preventing the abnormal action of the slave CPU when the power to the overall system is turned off.