Patent ID: 8997158
Filing Date: 2015-03-31
Classification: H04N

Abstract:
1. A method of transmitting a broadcast signal for a Non-Real Time (NRT) service, the method comprising: generating the broadcast signal including the NRT service that is delivered in advance of its use and stored in a receiving device, and signaling data including an NRT Information Table (NRT-IT) describing one or more content items available for download to storage in the receiving device for signaling NRT service and signaling data further including a Service Map Table (SMT) containing service-level attributes for the NRT broadcasting, wherein the SMT includes information used as a linkage to the NRT-IT; and transmitting the NRT service via a broadcast channel and the signaling data via a Service Signaling Channel (SSC) with a specific IP address and UDP port number, wherein: the NRT service is delivered within IP packets forming an IP subnet, the IP subnet associated with a virtual channel are identified by references in a Virtual Channel Table (VCT) and an associated Program Map Table (PMT), the IP packets are carried in MPEG-2 Transport Stream using Digital Storage Media Command and Control (DSM-CC) Addressable Section format, a Receiver Targeting Descriptor is included in at least one of SMT and NRT-IT, the NRT service is downloaded based on targeting_criterion_type_code included in the Receiver Targeting Descriptor, and the PMT includes information indicating that the SSC is contained in a program element included in the IP subnet.