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:
Mar. 10, 2020
Filed:
Jun. 18, 2018
Immersion Corporation, San Jose, CA (US);
Stephen D. Rank, San Jose, CA (US);
Erin B. Ramsay, Dollard-des-Ormeaux, CA;
Henry Da Costa, Montreal, CA;
Arnab Sen, San Jose, CA (US);
Elena Renee Redelsheimer, Emeryville, CA (US);
Immersion Corporation, San Jose, CA (US);
Abstract
A method of generating a haptic effect on a linear resonance actuator ('LRA') having a resonant frequency includes receiving a haptic effect signal for the haptic effect, where the haptic effect comprises a desired frequency that is off-resonant from the LRA. The method further includes generating a first sine wave at the desired frequency and generating a second sine wave at or near the resonant frequency. The method further includes combining the first sine wave and the second sine wave to generate a drive signal.