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. 29, 2019
Filed:
Apr. 20, 2016
Rohm Co., Ltd., Kyoto, JP;
Hiroki Hashimoto, Kyoto, JP;
Ryoichi Inoue, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A motor driving device and driving method of the same used to surely suppress the influence of counter electromotive force is provided. The motor driving deviceincludes an auto-decay portion. The auto-decay portioncontrols a path of a electric current flow in a motor coil when supplying the electric current and when decaying the electric current. The influence of counter electromotive force generated in a stepping motorcan be suppressed by the auto-decay portionconfigured to control so that a ratio or an decay time of a slow decay mode and a fast decay mode of previous cycle is different from a ratio or an decay time of the slow decay mode and the fast decay mode of current cycle.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile