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:
Apr. 07, 2020
Filed:
Feb. 05, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Shunsuke Miyajima, Saitama, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A vibration motor controller configured to cause a vibrating member in which a vibration is excited based on two frequency signals having a phase difference to move relatively to a contact member, the vibration motor controller including: a memory configured to store a speed characteristic of the vibrating member with respect to a frequency of the two frequency signals; a controller configured to control a speed of the vibrating member by changing the frequency and/or a phase difference of the two frequency signals; a detector configured to detect the speed; and a changing unit configured to acquire change amount and change direction of the speed characteristic based on comparison between the speed detected by the detector and the speed characteristic stored in the memory, and change an activation frequency being a start point of control conducted by the controller based on the change amount and the change direction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile