Computer graphics processing and selective visual display system – Plural display systems – Remotely located
Patent
1996-08-15
1999-08-17
Rogers, Scott
Computer graphics processing and selective visual display system
Plural display systems
Remotely located
358452, 358479, 348 18, H04N 100, H04N 1387
Patent
active
059400498
ABSTRACT:
The projector of the present invention provides a means for interactively displaying and annotating a document image at two separate locations. The projector consists of an image plate having an array of picture elements for displaying the image; a projection mechanism for projecting the image displayed by the image plate onto a projection screen; and a digitizer having a coordinate input array which corresponds to the array of picture elements of the image plate, wherein the image displayed by the image plate changes in response to coordinate inputs to the digitizer. A method for interactively annotating an image communicated between a remote and local image includes the procedure of simultaneously transmitting to the remote projector, annotations made to an image in the local projector. Image enhancement means are provided including an overlap-region calibration, a set of cross-polarizers, a high-intensity strobed flash lamp using interlaced scanning, sub-divided picture elements, and automatic gain correction.
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Baker Philip G.
Hinman Brian L.
Rodman Jeffrey C.
Polycom, Inc.
Rogers Scott
LandOfFree
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