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:
Mar. 10, 2009
Filed:
Oct. 20, 2004
Applicant:
Youichi Tamura, Minato-ku, JP;
Inventor:
Youichi Tamura, Minato-ku, JP;
Assignee:
NEC Display Solutions Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 3/033 (2006.01); H04N 5/64 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electronic whiteboard system has light emitting elements mounted on ultrasonic wave receivers of a signal processor, and an imager device for imaging the light emitting elements and a projection test pattern of a projector to acquire a positional relationship between the light emitting elements and an image projected from the projector. The electronic whiteboard system can facilitate initialization of the coordinates with the acquired positional relationship.
Tamura, Youichi. (2009). Projector, electronic whiteboard system using projector and method of acquiring indicated point (U.S. Patent No. 7502018). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7502018
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile