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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.:

US 11700365 B1

PDFFull Text
Date of Patent:
Jul. 11, 2023

Filed:

Feb. 17, 2021

Position detection method, position detection device, and display device

Applicant:

Seiko Epson Corporation, Tokyo, JP;

Inventors:

Jun Yang, Markham, CA;

Guoyi Fu, Richmond Hill, CA;

Assignee:

Seiko Epson Corporation, Tokyo, JP;

Attorney:

Dority & Manning, P.A.

Primary Examiner:

Christopher S Kelley

Assistant Examiner:

Ana Picon-Feliciano

Int. Cl.
CPC ...
H04N 17/00 (2006.01); H04N 9/31 (2006.01); G06F 3/03 (2006.01); G06T 7/174 (2017.01); G06T 7/194 (2017.01); H04N 23/80 (2023.01); G06V 30/142 (2022.01); G06V 30/19 (2022.01); G06V 30/32 (2022.01); G06V 10/82 (2022.01); G06V 10/44 (2022.01); G06V 10/50 (2022.01);
U.S. Cl.
CPC ...
H04N 17/002 (2013.01); G06F 3/0304 (2013.01); G06T 7/174 (2017.01); G06T 7/194 (2017.01); G06V 10/454 (2022.01); G06V 10/507 (2022.01); G06V 10/82 (2022.01); G06V 30/1423 (2022.01); G06V 30/19173 (2022.01); G06V 30/32 (2022.01); H04N 9/3194 (2013.01); H04N 23/80 (2023.01);
Abstract

Position detection methods and systems are disclosed herein. The position detection method of detecting a position in an operation surface pointed by a pointing element includes obtaining a first taken image with the first infrared camera, obtaining a second taken image with the second infrared camera, removing a noise component from the first and second images converting the first and second taken into converted images without the noise component, forming a difference image between the first converted taken image and the second converted taken image, extracting a candidate area in which a disparity amount between the first converted taken image and the second converted taken image is within a predetermined range, detecting a tip position of the pointing element from the candidate area, and determining a pointing position of the pointing element and whether or not the pointing element had contact with the operation surface based on the detecting.

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