| 小型可视数据系统 |
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| 引用本文： | 于绣榛,郭震,饶学伟,葛良. 小型可视数据系统[J]. 北京邮电大学学报, 1991, 0(3) |
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| 作者姓名： | 于绣榛 郭震 饶学伟 葛良 |
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| 作者单位： | 北京邮电学院无线电工程系，北京邮电学院无线电工程系，北京邮电学院无线电工程系，北京邮电学院无线电工程系 |
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| 摘 要： | 本文介绍了一个小型可视数据系统.用户端的附加器采用了单片机及一些集成度较高的芯片.在信息中心方面,除系统管理程序外,还编写了一个信息页编辑程序,采用窗口和菜单方式,信息页的组织采用了树型结构,我们建立的文本和位映像信号传输协议,在传送文字时可获得高速率.在传送图形时可以获得高分辨率(并可能推广到高清晰度彩色图片).
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| 关 键 词： | 图文电视 数据传输 信息检索 |
A Mini-Videotex System |
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| Yu Xiuzhen Guo Zhen Rao Xuewei Ge Liang. A Mini-Videotex System[J]. Journal of Beijing University of Posts and Telecommunications, 1991, 0(3) |
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| Authors: | Yu Xiuzhen Guo Zhen Rao Xuewei Ge Liang |
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| Affiliation: | Department of Radio Engineering |
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| Abstract: | In this paper,a Mini Videotex system were described.In user decoder, a single chip micro computer and a few other VLSI chips were used to reduce its size and cost.In the information center,in addition to its system software, a combined text and graphics editor with window and pop up menus were developed,which provides a convenient tool for creating or updating informa- tion pages,The information pages were organized in tree structure,we suggested a combined text and bit image transmission protocol,which yields speed in text mode and high resolution in image mode. |
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| Keywords: | videotex data transmission information retrieval |
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