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. 19, 1982
Filed:
Apr. 20, 1978
Applicant:
Inventors:
Masaaki Mandai, Tokyo, JP;
Akira Torisawa, Tokyo, JP;
Makoto Ueda, Tokyo, JP;
Kazuhiro Asano, Tokyo, JP;
Masaharu Shida, Tokyo, JP;
Katsuhiko Satoh, Tokyo, JP;
Assignee:
Kabushiki Kaisha Daini Seikosha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G04F / ; G04C / ; G05B / ;
U.S. Cl.
CPC ...
368157 ; 368 85 ; 368217 ; 318696 ;
Abstract
In an electronic timepiece, a motor is driven by a pulse having a shorter pulse width than the conventional driving pulse and afterwards, a detection pulse is applied to the motor coil so as to determine rotation of the rotor. If the rotor fails to rotate a correction is effected by driving the motor by a pulse having a pulse width greater than the normal driving pulse.