Patent ID: 8520495
Filing Date: 2013-08-27
Classification: H04H

Abstract:
1. A method for a broadcasting signal receiving device to receive a broadcasting signal, comprising: receiving a broadcasting signal; receiving an additional signal relating to the broadcasting signal; outputting a hierarchical modulation signal by demodulating the broadcasting signal; demodulating the hierarchical modulation signal into a base layer signal and an enhancement layer signal; demodulating the additional signal into an additional layer signal; outputting a first service stream by processing the base layer signal; selectively outputting a second service stream added to the first service stream by selectively processing the enhancement layer signal according to the user's service level information; selectively outputting a third service stream relating to the first service stream and differing from the second service stream by selectively processing the additional layer signal according to the user's service level information; wherein the selectively outputting of the third stream includes outputting the third service stream when the user's service level is the highest level; wherein when the user's service level is other than the lowest level and the highest level, the selectively outputting of the second service stream includes outputting the second service stream, and the selectively outputting of the third service stream includes outputting no third service stream when the user's service level is the lowest level.