有线电视(CATV)广播网的兴旺发达,只是近几年才开始。在有线电视网的结构中,市有线电视台至市属各区的有线电视站,每区站至其所属各街道的有线电视点构成骨干网(backbone),采用星形结构;各街道点至其范围内各居民用户家构成分配网(distribution),可以是树枝形结构,也可以是星形结构。 The thriving CATV radio network only started in recent years. In the structure of the cable television network, city cable television stations to cable television stations in various districts of the city, each district station to the cable television point of its respective street constitute the backbone, the use of a star structure; the street point to its range Each resident user’s home constitutes a distribution network, which may be a tree-shaped structure or a star-shaped structure.