图片视频文本——南非图片交流方案

COMSIG 88@m_Southern African Conference on Communications and Signal Processing. Proceedings Pub Date : 1988-06-24 DOI:10.1109/COMSIG.1988.49300

J. Grove

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引用次数: 0

摘要

本文概述了可视图文的发展，从最早的Prestel系统到可视图文的最新发展，即以日本NTT公司开发的CAPTAIN(字符和图案电话接入信息网)和英国电信公司开发的图片可视图文为例。值得注意的是，Beltel(南非可视图文系统)支持三个向上兼容的可视图文标准。建议使用图像编码在南非提供廉价和快速响应的照片视频服务，与Beltel兼容。讨论了不同的图像编码方案，比较了它们的优缺点。本文还概述了综合业务数字网(ISDN)在这一发展中将发挥的作用。此服务提供的应用程序将突出显示。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Photo videotex-a proposal for picture communication in South Africa

An overview of the development of videotex is given, starting from the first Prestel system to the latest developments in videotex, namely photo videotex with CAPTAIN (character and pattern telephone access information network, developed by NTT in Japan) and picture Prestel (developed by British Telecom) as examples. It is noted that three upwards compatible videotex standards are supported by Beltel (the South African videotex system). It is proposed that image coding be used to provide an inexpensive and fast response photo videotex service in South Africa, compatible with Beltel. The different image coding solutions are discussed and reference is made to their advantages and disadvantages. The role that the integrated services digital network (ISDN) will play in this development is also outlined. The applications made available by this service are highlighted.<>

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COMSIG 88@m_Southern African Conference on Communications and Signal Processing. Proceedings

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