1. Field of the Invention
The present invention relates to a method for interfacing between a transmitter and receiver of a digital broadcasting system using a satellite. Specifically, this invention is relates to the kind, construction, and form of data of a resource and subscriber management system, which are transmitted to the receiver by the satellite.
2. Discussion of Related Art
Domestically, direct-broadcasting by a satellite has never been executed, whereas it has already been executed in foreign countries using an analog way. Satellite broadcasting service produces much more improved picture and audio quality, thereby providing more satisfactory reception state, compared to conventional broadcasting media. It also makes whole country put in a unitary broadcasting range. The satellite broadcasting has advantages in that it is not only applicable to various new media but also utilized in emergency caused by disaster. However, for the satellite broadcasting using the analog way, since fixed channels are allotted to each countries, the number of channels for transmission is restricted. Therefore, the satellite broadcasting cannot provide various services. Since a high-output satellite should be used, financial burden cannot be avoided. To solve these problems, digital satellite broadcasting system using a digital way, is being developed. In America, test broadcasting is being carried out. As a result of development in a video signal digitalizing technology like a digital image compressing and a semiconductor technology, transmission to one broadcasting repeater through many channels becomes available in the digital satellite broadcasting. Since the digital satellite broadcasting has satisfactory power efficiency in transmission, and so establishes a miniaturization of a receiving antenna. The digital satellite broadcasting also has advantages of controlling a subscriber's access to programs, collecting the subscriber's usage record, and providing various services such as a transmission of program guiding information. The various services are easily provided by transmitting messages through a satellite using a resource and subscriber management system.
The message formats of the digital broadcasting have been standardized by the International Standard Organization/International Electrotechnical Commission (ISO/IEC), Moving Picture Expert Group-2 (13818 MPEG-2) and Digital Video Broadcasting-System information (DVB-SI). The standard is being tested by some satellite broadcasting systems. However, the MPEG-2 and DVB-SI do not define structures for transmitting public switched telephone network and public switched data network number for automatically sending pay broadcasting subscription records; program guiding construction description information through which much amount of program guiding information is divided into packets; reserved recording information for automatically performing reserved recording; and program price information for showing the prices of programs.