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:
Aug. 14, 2001
Filed:
May. 11, 1999
Applicant:
Inventor:
Yasuhiro Wada, Osaka, JP;
Assignee:
Funai Electric Co., Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
H02P 8/22 ;
U.S. Cl.
CPC ...
H02P 8/22 ;
Abstract
A drive control apparatus for a stepping motor comprises a driving circuit connected to the stepping motor for driving the same, and a controller for outputting a control signal to the driving circuit so as to set up a W1-2 phase driving mode when the stepping motor is in an acceleration and deceleration states, and so as to set up 1-2 phase driving mode when the stepping motor is in a constant-speed state.