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:
Dec. 11, 2018
Filed:
Feb. 04, 2014
Maxell, Ltd., Kyoto, JP;
MAXELL, LTD., Kyoto, JP;
Abstract
A shadow region extraction portion compares the brightness of an image captured by a camera with a threshold value and extracts first and second shadows caused by first and second light sources for a user's finger. An approach degree detection portion detects an approach degree for the finger with reference to a manipulation surface from distance d between two feature points in the first and second shadows. A contact point detection portion detects contact point P for the finger with reference to the manipulation surface from positions of the two feature points. A direction detection portion detects a direction pointed by the finger from directions of contours corresponding to the first and second shadows. A display control portion generates display control data for a manipulation target apparatus based on detection result data.