Patent ID: 8291462
Filing Date: 2012-10-16
Classification: H04L,H04N

Abstract:
1. A method of receiving broadcast data, comprising the steps of: receiving a service discovery information packet including first information on a service and extracting the first information included in the service discovery information packet, the service discovery information packet further including second information on a preview for the service; storing the first information extracted from the service discovery information packet and making a channel map using the stored first information; and receiving a first stream including the service and preview using the channel map, wherein the first information includes first element providing a first IP (internet Protocol) multicast address at which the service is accessed, and second element indicating whether a streaming of the service from the multicast address uses a RTP (Real Time Protocol) or a direct UDP (User Datagram Protocol), wherein the second information further includes at least one of third element indicating preferred preview among multiple previews for the service, the multiple previews being included in the first stream, fourth element specifying DVB triplet information of the preview, fifth element indicating a first IP multicast address for the preview, and sixth element indicating maximum bitrate for data of the preview.