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:
Aug. 19, 2014
Filed:
Jul. 24, 2011
Applicant:
Nongqiang Fan, Holbrook, NY (US);
Inventor:
Nongqiang Fan, Holbrook, NY (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/44 (2011.01);
U.S. Cl.
CPC ...
Abstract
A display device includes a matrix of pixel elements and a matrix of photo-detecting elements. The display device also includes an interface port accessible from the outside of the display device and configured to output a representation of a position of an invisible light spot on the display screen generated from an invisible light beam projected thereon with a spreading angle less than 20 degrees. The position of the invisible light spot is determined based on measurement from the photodetectors in the matrix of photo-detecting elements.