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:
Jun. 27, 2017
Filed:
May. 26, 2015
Rohm Co., Ltd., Kyoto, JP;
Yuji Kunida, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
The present invention provides a motor driving device without an additional signal line for identifying whether a motor rotates stably. The motor driving device () includes a control circuit () for receiving an acceleration signal (SU) and a deceleration signal (SD), and generating a driver control signal (S); a driving circuit () for generating a motor driving signal (S) according to the driver control signal (S); and a phase-locked identifying circuit () for monitoring an input mode of the acceleration signal (SU) and the deceleration signal (SD), and identifying whether the motor rotation speed is stable at the desired target rotation speed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile