Multicasting allows broadcast stations to offer several channels of digitalprogramming at the same time, using the same amount of spectrum required for one analog program.
多播技术可以让电视台同时为多个频道进行数字广播，占用的的频道资源仅相当于模拟信号的一个频道。
2
It describes a method for programming and managing a digital video recorder over the Internet.
它描述了一个通过互联网编程管理数字视频记录的方法。
3
In addition to his programming expertise, Richard has many years of practical experience in Digital Signal Processing (DSP).
除了编程经验之外，Richard还在数字信号处理(Digital Signal Processing, DSP)方面有多年的实践经验。