Patent ID: 8098741

Claim:
A method of processing a digital broadcast signal including mobile service data in a transmitter, the method comprising: encoding signaling data including first signaling data and second signaling data, wherein the first signaling data includes transmission parameters for the mobile service data and the second signaling data includes cross layer information between a physical layer and an upper layer, wherein encoding the signaling data comprises: first Reed-Solomon (RS) encoding the first signaling data at a first RS code rate, second RS encoding the second signaling data at a second RS code rate, interleaving the second RS encoded second signaling data, comprising: writing the second RS encoded second signaling data row-by-row from left-to-right and top-to-bottom, and outputting the written second signaling data by reading column by column from top-to-bottom and left-to-right of the second signaling data, and multiplexing the first RS encoded first signaling data with the interleaved second signaling data; forming data groups including the mobile service data and the encoded signaling data; and transmitting the digital broadcast signal including data in the formed data groups, wherein the mobile service data includes video data, the video data including data of a base layer and data of an enhanced layer, and wherein the enhanced layer has a spatial resolution or quality different from that of the base layer.