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:
Nov. 30, 1982
Filed:
Jun. 11, 1980
Applicant:
Inventors:
Assignee:
Citizen Watch Company Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G04C / ; G05B / ;
U.S. Cl.
CPC ...
368157 ; 368217 ; 318696 ;
Abstract
In a circuit for driving a pulse motor of an electronic timepiece, the initial part or entirety of each drive pulse is modulated to form a group of high frequency pulses thereby reducing an initial surge of current while rotor of motor is still stationary. Modulation can be controlled according to load placed on motor to provide increased drive energy for heavy loading.