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. 09, 2021
Filed:
Nov. 13, 2015
Maxell, Ltd., Kyoto, JP;
MAXELL, LTD., Kyoto, JP;
Abstract
A manipulation detection device includes a first manipulation detection process based on detection of light emission of an electronic pen (a first manipulation object) and a second manipulation detection process based on detection of a shadow of a finger (a second manipulation object) by radiation of illumination light. An image sensor captures an image of the electronic pen and an image of the finger, and image signal processing units perform a contrast adjustment of the captured image. Here, a state of the contrast adjustment performed by the image signal processing unit differs between the captured image of the electronic pen and the captured image of the finger. Manipulation detecting units execute a manipulation detection process for the electronic pen and the finger using the captured image which has undergone the contrast adjustment.