METHOD AND APPARATUS FOR SECURELY MULTICASTING CONTENTS BETWEEN DEVICES IN NETWORKS

摘要

PURPOSE: A method for using multicast streaming about contents between networks and a device thereof are provided to guarantee security about content data transmitted between general purpose network media devices locating in different home networks. CONSTITUTION: A home-to-home multicast control device(100) processes content data which a general-purpose network device holds into a file block and a chunk file. The home-to-home multicast control device transmits the processed data with one to one or one to many. Home-to-home multicast bridge devices(200-1,200-2,200-3) streams the content data to general purpose network devices(700-1,700-2,700-3) located on home networks(600-1,600-2,600-3). A multicast relay device(300) relays the content data and a control message which is transmitted between the home-to-home multicast control device and the home-to-home multicast bridge device.