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. 21, 2007
Filed:
Jun. 26, 2002
Manabu Sasaki, Kawasaki, JP;
Takatoshi Fukuda, Kawasaki, JP;
Manabu Suzuki, Kawasaki, JP;
Kunihiko Hagiwara, Kawasaki, JP;
Yukihiro Okada, Longmont, CO (US);
Hiroshi Miyaoku, Kawasaki, JP;
Seiji Toda, Kawasaki, JP;
Keiko Horiuchi, Adachi, JP;
Manabu Sasaki, Kawasaki, JP;
Takatoshi Fukuda, Kawasaki, JP;
Manabu Suzuki, Kawasaki, JP;
Kunihiko Hagiwara, Kawasaki, JP;
Yukihiro Okada, Longmont, CO (US);
Hiroshi Miyaoku, Kawasaki, JP;
Seiji Toda, Kawasaki, JP;
Keiko Horiuchi, Adachi, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
When a user indicates a point on a display screen of a computer using a pen sensor, first the display screen is divided into a plurality of areas and the areas are displayed by mutually different colors or brightnesses. The plurality of colors or brightnesses displayed are scanned by the pen sensor and the colors or brightnesses detected by the light receiver to judge in which area the indicated point is located. Next, the judged area is further divided into a plurality of areas which are displayed by mutually different colors or brightnesses. Next, a routine similar to the above is successively repeated to narrow down the area in which the point indicated by the pen sensor is located and finally determine the position of the point, that is, the XY coordinates on the display screen.