The households of U.S. Cable TV will be over 60% in the end of 1990,then Cable TV is on a par with terrestrial TV broadcasting. In domestic households of Cable TV is about 20%. but condition of growth being prepared. There are two effective technologies of Cable TV, space communication and optic fiber transmission. Space communication contributes to more channel of Cable TV programs and optic fiber transmission is better performance of picture quality and more service of broadcasting new technology, for example HD-TV. For an operator of Cable TV, fiber brings low cost operation, construction and get high fidelity plant.
In efforts to establish the broadcasting standard in Japan, the transmission protocol and the engineering guideline based on the MUSE system has been studied and agreed to by "the Telecommunications and Technology Council of the Ministry of Posts and Telecommunications" and "the Broadcasting Technology Association (BTA)". This paper describes the transmission protocol as well as the bandwidth compression technology in the MUSE system. (for tutorial)