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. 28, 2020
Filed:
Jul. 03, 2018
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
An electronic device can provide a satisfactory tactile sensation by Fourier-transforming a first image including brightness information, to obtain a first spatial-frequency distribution of the brightness, obtaining a second spatial-frequency distribution by multiplying the first spatial-frequency distribution by a coefficient depending on the first image size, obtaining a first time-frequency distribution based on the second spatial-frequency distribution and an input operation speed, filtering the first time-frequency distribution through a filter in which the transmittance for a frequency band detectable by Pacini's corpuscles is reduced, to obtain a second time-frequency distribution, converting the second time-frequency distribution into a third spatial-frequency distribution, based on the coefficient and the predetermined speed, inverse-Fourier-transforming the third spatial-frequency distribution, to obtain a second image, and driving a vibration element by a drive signal that has an amplitude according to brightness of the second image at the input position.