Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Reexamination Certificate
2004-08-06
2010-06-01
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
C345S175000, C345S179000, C178S018010
Reexamination Certificate
active
07728821
ABSTRACT:
The invention provides an interactive display that is controlled by user gestures identified on a touch detecting display surface. In the preferred embodiment of the invention, imagery is projected onto a horizontal projection surface from a projector located above the projection surface. The locations where a user contacts the projection surface are detected using a set of infrared emitters and receivers arrayed around the perimeter of the projection surface. For each contact location, a computer software application stores a history of contact position information and, from the position history, determines a velocity for each contact location. Based upon the position history and the velocity information, gestures are identified. The identified gestures are associated with display commands that are executed to update the displayed imagery accordingly. Thus, the invention enables users to control the display through direct physical interaction with the imagery.
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Ferren Bran
Hillis W. Daniel
McKinley Ryan
Glenn Michael A.
Glenn Patent Group
Hjerpe Richard
Nguyen Kimnhung
Touchtable, Inc.
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