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:
Jan. 13, 1987
Filed:
Oct. 28, 1985
Applicant:
Inventors:
Atsutaka Morimoto, Kanagawa, JP;
Shoji Takahashi, Saitama, JP;
Assignee:
Citizen Watch Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360137 ; 360 69 ; 360 75 ; 360 60 ;
Abstract
The monitoring system includes two voltage detectors, each of which has hysteresis, wherein write, read, head feeding operations, and a motor driving function can be performed when the power source is in excess of an upper reset level, and, when the voltage decreases below an upper set level, writing is inhibited while the other operations can still be performed, and when the voltage further decreases below a lower set level operation of the entire drive is inhibited.