Patent ID: 6816704
Filing Date: 2004-11-09
Classification: H04H,H04N

Abstract:
A communication system comprising:relay means including: first receiving means having a plurality of receivers for receiving simultaneously a plurality of communication signals in data packet form transmitted by a plurality of different transmission systems including a satellite transmission system, a ground antenna transmission system, and a cable transmission system, control means for selecting one of said plurality of receivers in response to a request signal, selecting means for selecting, in response to said request signal, a desired program from one of said plurality of communication signals received by said selected one of said plurality of receivers, converting means for mapping said desired program selected by said selecting means into a plurality of slots to form a radio signal corresponding to a specific radio transmission format, wherein said radio signal includes an Internet broadcast and content information, and radio transmission means for transmitting said radio signal using a vacant band; and terminal means including: second receiving means for receiving said radio signal corresponding to said specific radio transmission format, and request signal generating means for generating said request signal and request signal transmission means for transmitting said request signal to said relay means.