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:
Feb. 04, 1997
Filed:
Apr. 26, 1996
Applicant:
Inventor:
Tetsusai Kondo, Hamamatsu, JP;
Assignee:
Kabushiki Kaisha Kawai Gakki Seisakusho, Shizuoka-ken, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 18 ; 84 22 ;
Abstract
An automatic performing apparatus that executes recording and reproduction of a performance includes a diagnostic signal generator for sending a power supply control circuit at least one of normal and abnormal diagnostic signals indicating whether a controller is normally executing a program. The power supply control circuit controls the power supplied to a drive circuit by interrupting the power or reducing the power to such a low level that the drive circuit is not damaged by a prolonged power supply if the operation of the controller is determined abnormal based on the diagnostic signal generated by the diagnostic signal generator.