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. 14, 2016
Filed:
Feb. 24, 2014
Hitachi Maxell, Ltd., Osaka, JP;
Hitachi Maxell, Ltd., Osaka, JP;
Abstract
An operation detection device includes: first and second illuminations that irradiate illumination light from different positions onto an operation surface on which a user performs an operation; a camera that captures the operation surface together with an operation part (finger) of the user; a shadow region extraction unit that extracts first and second shadows of the operation part of the user from a captured image obtained by the camera; a contour detection unit that detects contours of each of the first and second shadows extracted; and a touch point detection unit that detects a touch point of the operation part of the user on the operation surface from the distance between the contours.