论文部分内容阅读
我们已经知道有线电视传输系统频带很宽,除了传输电视信号外,还有充分的频段可以用来传输数据信号,因此利用Cable Modem就可以以在有线电视网上建立计算机网络连接到 Internet。下图就是用Cable Modem构成有线电视数据网的结构图。从图中我们可以看到,在有线电视网控制中心配备有一个有线电视数据网中央控制器,由于有线电视网原来就属于集中控制管理模式,所以有线电视数据网中央控制器可以管理整个网上的许多必要的参数。下例
We already know that the CATV transmission system has a wide frequency band. In addition to transmitting TV signals, there are enough frequency bands for transmitting data signals. Therefore, a Cable Modem can be used to establish a computer network in the cable TV network to connect to the Internet. The following figure is the Cable Modem cable network structure diagram. From the figure we can see that in the cable television network control center is equipped with a cable television data center central controller, cable television network originally belonged to the centralized control management mode, so cable television network central controller can manage the entire network Many necessary parameters. The following example