摘要
介绍了多媒体电视图文演播系统的组成,包括电视图文信号的形成过程、电视图文信号与彩色PAL制式视频信号进行视频频率合成的硬件及多媒体电视图文演播系统软件。
The construction and the principle of the playback system of multi-media teletext are discussed in this paper.This discussion includes:the generating process of teletext signal, the technology of overlay synchronize the teletext signal with the PAL model composite video signal and the block diagram of the software on the playbacking system of multi-media teletext.
出处
《电视技术》
北大核心
2001年第1期77-79,82,共4页
Video Engineering
关键词
多媒体
电视图文
图文演播系统
multi-media
teletext
PAL model
video signal
composite video overlay synchronizH