Coordinate input apparatus, its control method, and program

Details Coordinate input apparatus, its control method, and program Coordinate input apparatus, its control method, and program

2005-03-09

2008-10-07

Shankar, Vijay (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

C345S175000, C345S176000, C178S018010, C178S018040

Reexamination Certificate

active

07432914

ABSTRACT:
Angle information corresponding to a specified point is calculated on the basis of a change in light amount distribution obtained from at least two sensor units which are arranged on the corner portions of a coordinate input region and receive incoming light. The coordinates of a pointed position on the coordinate input region are calculated on the basis of the calculated angle information. Each of the at least two sensor units includes two light-receiving units being first and second light-receiving units.

REFERENCES:
patent: 4144449 (1979-03-01), Funk et al.
patent: 4507557 (1985-03-01), Tsikos
patent: 6362468 (2002-03-01), Murakami et al.
patent: 6563491 (2003-05-01), Omura
patent: 7015894 (2006-03-01), Morohoshi
patent: 7283128 (2007-10-01), Sato
patent: 0 279 652 (1988-08-01), None
patent: 1 128 318 (2001-08-01), None
patent: 1128318 (2001-08-01), None
patent: 2896183 (1999-03-01), None
patent: 2000-105671 (2000-04-01), None
patent: H12-353048 (2000-12-01), None
patent: 2001-142642 (2001-05-01), None
patent: 2002-055770 (2002-02-01), None
patent: 2003-303046 (2003-10-01), None
patent: 1998-703542 (1998-11-01), None
patent: 2002-079847 (2002-10-01), None
patent: WO 96/31836 (1996-10-01), None
patent: WO 01/59975 (2001-08-01), None

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