Apparatus allowing remote interactive use of a plurality of writ

Details Apparatus allowing remote interactive use of a plurality of writ Apparatus allowing remote interactive use of a plurality of writ

1990-07-30

1991-06-18

Kostak, Victor R.

Facsimile and static presentation processing

Static presentation processing

Attribute control

178 18, H04N 718

Patent

active

050253140

ABSTRACT:
Remote interactive use of a plurality of writing surfaces, such as special wall mounted whiteboards and the like, is facilitated by an apparatus which includes, for each writing surface, a translucent screen acting as the writing surface itself, a video camera located behind the translucent screen for receiving an image of indications imparted upon the translucent screen, and a video projector for projecting onto the back side of the translucent screen a composite of the images imparted upon each of the translucent screens. Backlighting of a user is employed to allow presentation of the processes of imparting, using and referring to the indicia together with the indicia itself. Proper ambient lighting also provides a limited three dimensional view of the user. Audio portions of interactive work may be captured by a microphone and transmitted to speakers in conjunction with the video portion of the interactive work. An audio/video mixing resource may be employed to combine the images of indicia and audio from various worksites for presentation. Low bandwidth of the present system facilitates compression and use with emerging commercial communications standards (e.g., ISDN).

REFERENCES:
patent: 3617630 (1971-11-01), Reiffel
patent: 3755623 (1973-08-01), Cassagne
patent: 4280135 (1981-07-01), Schlossberg
patent: 4371893 (1983-02-01), Rabeisen
patent: 4400724 (1983-08-01), Fields
patent: 4561017 (1988-12-01), Greene

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