1990 年 14 巻 44 号 p. 31-36
Various data broadcasting services such as teletext, facsimile, telesoftware and telemusic can be transmitted using DBS Data Channel. A common transmission control system is necessary for transmitting these different services altogether. The authors consider the functions required for the system and propose means for implementing them. The 7-layer model in line with OSI reference model is applied to data broadcasting systems.