1 October 1993 ISDN audio-graphics teleconferencing systems
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J. of Electronic Imaging, 2(4), (1993). doi:10.1117/12.150413
Abstract
An audio-graphics teleconferencing system has been developed that uses ordinary personal computers interconnected over a basic rate (2B+D) ISDN line. The system supports high-speed transmission of 200-dpi resolution documents read in by an optical scanner and presented on the displays of the conference participants. While looking at the same material, the conferees can interactively converse and make handwritten notations on the document via an LCD tablet for all the participants to see. We describe the configuration and performance of the system, focusing mainly on the ISDN based multimedia transmission method and the method for reducing and enlarging binary images.
Kiyoto Tanaka, Ikuro Oyaizu, "ISDN audio-graphics teleconferencing systems," Journal of Electronic Imaging 2(4), (1 October 1993). http://dx.doi.org/10.1117/12.150413
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KEYWORDS
Signal processing

Tablets

LCDs

Computing systems

Control systems

Data conversion

Image processing

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