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:
Feb. 05, 2008
Filed:
Aug. 05, 2005
Applicants:
Naoki Kaise, Higashiosaka, JP;
Koji Muraoka, Nishinomiya, JP;
Toru Kirimura, Tsushima, JP;
Inventors:
Assignee:
Sanyo Electric Co., Ltd, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A projection type video display apparatus in which a display device transmits light emitted from a light source to project a video written into the display device is characterized by comprising person detection means for detecting a person who exists within a projected video area, and control means for changing the state of the projected video when the person detection means detects the person.