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:
Apr. 22, 2014
Filed:
Sep. 25, 2012
Applicant:
Daegu Gyeongbuk Institute of Science and Technology, Daegu, KR;
Inventors:
Byeong-Dae Choi, Jung-Gu, KR;
Dae-Hwan Kim, Jung-Gu, KR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A multimedia player for providing clear projection image includes; a projection unit displaying a projection image; a screen sensing unit sensing a color of a display plane on which the projection image will be displayed; and a virtual input unit for detecting and providing coordinates of a position being touched on the projection image, wherein a driving unit of the projection unit controls a focal length of a projection lens unit based on a projection image being captured by the screen sensing unit.