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:
Oct. 27, 2020
Filed:
Jul. 08, 2019
Seiko Instruments Inc., Chiba-shi, Chiba, JP;
Tetsuya Nobe, Chiba, JP;
SEIKO INSTRUMENTS INC., Chiba, JP;
Abstract
A motor driving apparatus is a pulse generation circuit applying a drive pulse for rotating a rotor to a two stepping motor including the rotor magnetized in two poles and a stator in which a two-phase coil is wound around a yoke. The drive pulse is constituted of a drive pulse Pand a drive pulse P. The pulse generation circuit applies the drive pulse Phaving a stable stationary position at which a rotor rotation angle from a reference position is 90 degrees or less and applies the drive pulse Phaving a stable stationary position at which the rotor rotation angle from the reference position is 90 degrees or more continuously to the application of the drive pulse P