Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Reexamination Certificate
2005-10-11
2005-10-11
Shankar, Vijay (Department: 2673)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
C345S157000
Reexamination Certificate
active
06954197
ABSTRACT:
A touch system includes a touch surface and at least two cameras associated with the touch surface. The at least two cameras acquire images of the touch surface from different locations and having overlapping fields of view. A digital signal processor is associated with each camera. The digital signal processors process pixel data acquired by selected pixel subsets of the at least two digital cameras to generate pointer characteristic data when a pointer exists in the acquired images. The pointer characteristic data identifies edges of the pointer. A master digital signal processor triangulates the edge information in the pointer characteristic data to determine a bounding area that represents a pointer perimeter.
REFERENCES:
patent: 4507557 (1985-03-01), Tsikos
patent: 4742221 (1988-05-01), Sasaki et al.
patent: 4746770 (1988-05-01), McAvinney
patent: 4818826 (1989-04-01), Kimura
patent: 5317140 (1994-05-01), Dunthorn
patent: 5502568 (1996-03-01), Ogawa et al.
patent: 5936615 (1999-08-01), Waters
patent: 5982352 (1999-11-01), Pryor
patent: 6008798 (1999-12-01), Mato, Jr. et al.
patent: 6100538 (2000-08-01), Ogawa
patent: 6208330 (2001-03-01), Hasegawa et al.
patent: 6335724 (2002-01-01), Takekawa et al.
patent: 6414671 (2002-07-01), Gillespie et al.
patent: 6421042 (2002-07-01), Omura et al.
patent: 6531999 (2003-03-01), Trajkovic
patent: 6563491 (2003-05-01), Omura
patent: 6710770 (2004-03-01), Tomasi et al.
patent: 6803906 (2004-10-01), Morrison et al.
patent: 2001/0019325 (2001-09-01), Takekawa
patent: 2001/0022579 (2001-09-01), Hirabayashi
patent: 2001/0026268 (2001-10-01), Ito
patent: 2003/0001825 (2003-01-01), Omura et al.
patent: 198 10 452 (1998-12-01), None
patent: 57-211637 (1982-12-01), None
patent: 8-240407 (1996-09-01), None
patent: 9-091094 (1997-04-01), None
patent: 9-319501 (1997-12-01), None
patent: WO 99/40562 (1999-08-01), None
“CCDs in optical touch panels deliver high resolution”, Bud K. Funk, Electronic Design, Sep. 27, 1980, pp. 139-143.
Akitt Trevor
Morrison Gerald
Su Scott
Dharia Prabodh
Katten Muchin & Rosenman LLP
Shankar Vijay
Smart Technologies Inc.
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