A data transmission apparatus is provided in which a master station (1) for creating playlists indicative of a transmission schedule of materials and slave stations (2-1) to (2-n) for transmitting materials based upon the playlists are connected together via a network (3), the master station (1) includes...http://www.google.fr/patents/US20030014475?utm_source=gb-gplus-shareBrevet US20030014475 - Data sending device and data sending method
