Patent ID: 9674673
Date: 2017-06-06
CPC Classifications: H04H,H04W

Claim:
1. A method of transmitting a broadcast signal at an apparatus comprising a transmitter, the method comprising: packetizing service data that includes at least a video file or an audio file into at least one Layered Coding Transport (LCT) packet; packetizing the at least one LCT packet into at least one User Datagram Protocol/Internet Protocol (UDP/IP) packet; generating a plurality of link layer packets having the at least one UDP/IP packet and service information for a service of the service data, wherein the service information includes major channel information and minor channel information related to the service; encoding data in the plurality of link layer packets at a first code rate; block interleaving the encoded data; convolutional interleaving the block-interleaved data; first encoding transmission parameters to add parity data, the transmission parameters including information for identifying the first code rate; second encoding the first encoded transmission parameters at a second code rate; allocating the convolutional interleaved data and the second encoded transmission parameters into a signal frame; and transmitting the broadcast signal having the signal frame, wherein the signal frame includes known data, the known data including first pattern known data and second pattern known data.