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. 11, 2006
Filed:
Sep. 26, 2002
Mitsuyoshi Nishimura, Saitama, JP;
Junichi Yokoyama, Saitama, JP;
Takashi Nagashima, Saitama, JP;
Fujinon Corporation, Saitama, JP;
Abstract
A presentation system comprises: a screen device; a projecting device for projecting an image onto the screen device; an indication mark for setting two reference points, which is two orthogonal points on a rectangular virtual screen, near a presenter and for the presenter operating a point on the virtual screen; a photographing device for photographing the virtual screen and the indication mark; and an arithmetic operation device for generating coordinates of the virtual screen from the two reference points photographed by the photographing device, and for calculating coordinates of the indication mark on the generated virtual screen. The projecting device projects a point image onto the coordinates of the indication mark on the image.