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. 11, 2003
Filed:
Aug. 28, 2000
Applicant:
Inventors:
Takahiro Ito, Nagoya, JP;
Yasuhiko Saka, Nagoya, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G09G 5/00 ;
U.S. Cl.
CPC ...
G09G 5/00 ;
Abstract
The coordinate-position input device comprises a substantially flat surface for specifying a desired position using a pointing tool. A reflecting member is provided around this surface. A light emitter emits a flux of light of desired thickness over the entire surface towards the reflecting member. The light flux is such that it is thicker near the reflecting member and becomes thinner and thinner as it goes away from the reflecting member. That is, the light flux diverges as it approaches the reflecting member.