SOUND/VIDEO BROADCASTER, SOUND/VIDEO BROADCASTING SYSTEM, SOUND/IMAGE BROADCASTING METHOD AND SOUND/VIDEO BROADCASTING PROGRAM

摘要

PROBLEM TO BE SOLVED: To achieve the reproduction of audio data and image data for which copyright protection is taken into consideration at a low cost in a sound/video broadcaster or the like.;SOLUTION: The sound/video broadcaster comprises a data communication modem 1 connected to a digital line D for receiving the audio data distributed for each channel, a server 2 for preserving the audio data received in the data communication modem 1, and a modem side power line communication part 3 for transmitting the audio data preserved in the server 2 through a power line L. When the same audio data are transmitted a fixed number of times by the modem side power line communication part 3 or when a fixed time elapses after the audio data are preserved, the server 2 deletes the audio data.;COPYRIGHT: (C)2008,JPO&INPIT