Introduces the issues on application of CCTV system based on the MPEG-4 compression, SDH optical transmission and large capacity hard disc storage technologies in urban rail transportation.

介绍了基于MPEG - 4压缩技术、SDH光纤传输技术和大容量硬盘存储技术的电视监控系统在城市轨道交通中的应用问题。

youdao

So why are people working on creating such a large capacity optical disc technology (among other potential uses)?

FORBES: What is the Future of Optical Disc Technology and who will Use It?

World's first triple-layer Blu-ray Disc media featuring large 100GB recording storage capacity.

ENGADGET: Sharp intros first 100GB BDXL discs, Japan gets first dibs on July 30