Patent ID: 9270392
Filing Date: 2016-02-23
CPC Classification: H03M,H04H,H04L,H04N

Claim Text:
1. A method of processing a broadcast signal in a broadcast transmitter, the method comprising: identifying a null data packet included in an input stream that includes the null data packet and a first broadcast data packet for a first service; deleting the identified null data packet in the input stream; randomizing first broadcast data of the first broadcast data packet in the input stream in which the null data packet is deleted; first encoding the randomized first broadcast data systematically; interleaving the first-encoded first broadcast data; and transmitting the broadcast signal including the interleaved first broadcast data, wherein the broadcast signal further includes second broadcast data for a second service multiplexed with the first broadcast data and information for identifying the first broadcast data and the second broadcast data, and wherein the first broadcast data and the second broadcast data have a different robustness level.