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:
Jul. 29, 2014
Filed:
Jan. 31, 2013
Immersion Corporation, San Jose, CA (US);
Robert A. Lacroix, San Jose, CA (US);
Michael A. Greenish, Gryon, CH;
Erin B. Ramsay, Dollard-des-Ormeaux, CA;
Immersion Corporation, San Jose, CA (US);
Abstract
A system that generates a haptic effect using an Eccentric Rotating Mass ('ERM') actuator determines a back electromotive force ('EMF') of the ERM actuator and receives a haptic effect signal comprising one or more parameters, where one of the parameters is a voltage amplitude level as a function of time. The system varies the voltage amplitude level based at least on the back EMF, and applies the varied haptic effect signal to the ERM actuator.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile