Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Reexamination Certificate
2005-09-20
2005-09-20
Hjerpe, Richard (Department: 2675)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
C345S175000, C345S179000, C345S180000, C345S181000, C345S182000, C345S183000
Reexamination Certificate
active
06947032
ABSTRACT:
A system and method for determining pointer contacts on a touch surface includes a touch surface to be contacted by a pointer. At least one imaging device having a field of view looks generally along the touch surface. At least one processor communicates with the at least one imaging device and analyzes images acquired by the at least one imaging device to detect the relative positions of a pointer and a reflection of the pointer therein and thereby determine if a pointer contact with the touch surface has been made.
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“CCDs in optical touch panels deliver high resolution”, Bud K. Funk, Electronic Design, Sep. 27, 1980, pp. 139-143.
McCharles Randy
Morrison Gerald D.
Singh Manvinder
Su Scott Yu Tseng
Beck Alexander S.
Hjerpe Richard
Katten Munchin Rosenman LLP
Smart Technologies Inc.
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