Computer graphics processing and selective visual display system – Display peripheral interface input device – Stylus
Reexamination Certificate
2006-11-14
2006-11-14
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Stylus
C345S156000, C345S157000, C345S158000, C345S173000, C345S183000, C178S018010, C178S018090, C178S018110, C178S019010, C178S019050, C340S815450
Reexamination Certificate
active
07136053
ABSTRACT:
Projector and camera arrangements are provided for use in electronic whiteboard systems. Specifically, the present invention provides projector and camera arrangements wherein the projector and camera share the same imaging optics. By sharing the same projection and camera optics, the distortions that affect the projection system are the same as those of the camera system. Thus, the calibration step required in conventional whiteboard systems where the projector and camera are separate, i.e., each having their own distinct optics and settings, is no longer needed. Further, the arrangements provided in accordance with the invention are self-aligning, even when lens distortions are large and even in the presence of strong perspective effects. The shared optics projector and camera arrangements of the invention also provide for dynamic zooming. In addition, various active and passive optical marker or lightpen designs are provided for use in electronic whiteboard systems.
REFERENCES:
patent: 4111052 (1978-09-01), Sniderman
patent: 4808980 (1989-02-01), Drumm
patent: 5235363 (1993-08-01), Vogeley et al.
patent: 5394183 (1995-02-01), Hyslop
patent: 5889505 (1999-03-01), Toyama et al.
patent: 6229601 (2001-05-01), Hasegawa
patent: 6317266 (2001-11-01), Yoshimura et al.
patent: 6664954 (2003-12-01), Yoshimura et al.
Tosaya Pub. No. U.S. 2001/0050677.
U.S. Appl. No. 09/642,531, filed Aug. 18, 2000, Hendriks et al.
M.E. Munich et al., “Visual Input For Pen-Based Computers,” Proceedings of ICPR'96, IEEE, pp. 33-37, 1996.
P. Wellner, “Interacting With Paper On The Digital Desk,” Communications of the ACM, vol. 36, No. 7, pp. 87-96, Jul. 1993.
S. Elrod et al., “Liveboard: A Large Interactive Display Supporting Group Meetings, Presentations and Remote Collaboration,” CHI'92, ACM, pp. 599-607, 1992.
Monochrome Interline Transfer CCD Cameras, Cohu Electronics, http://www.cohu.com, 4 pages.
Series 7700 dotCAM Specifications, Cohu Electronics, 4 pages.
Unaxis Optics Portrait, http://www.optics.unaxis.com, 7 pages.
Xerox Liveboard, http://www.snet.com, 6 pages.
Hendriks Ferdinand
Shae Zon-Yin
Tseng Belle L.
Wang Xiping
Cameron Douglas W.
Hjerpe Richard
Nguyen Jennifer T.
Ryan & Mason & Lewis, LLP
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