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日本电报电话公司已经引用各种电视信号传输系统来满足日益坛长的视频传输业务的需要。然而,常规系统的传输费用和图象质量均不能满足用户的要求。因此日本电报电话公司已经在研制某些视频传输系统(利用带宽压缩技术的编码-译码器和光纤视频传输系统),以提供低价、高质量的视频业务。本文描述使用光纤传输系统和视频编码方法的视频传输系统的最近发展趋向。
Nippon Telegraph and Telephone Corp. has cited various television signal transmission systems to meet the growing needs of video transmission services. However, the transmission costs and the image quality of the conventional system can not meet user’s requirements. Therefore, Nippon Telegraph and Telephone Corporation has been developing certain video transmission systems (codec-decoders and optical video transmission systems that utilize bandwidth compression) to provide low-cost, high-quality video services. This article describes recent trends in video transmission systems using optical fiber transmission systems and video coding methods.