Patent ID: 8046805
Filing Date: 2011-10-25
Classification: H04H,H04N,Y02D

Abstract:
1. A method of receiving a broadcast signal in a receiver, the method comprising: receiving a broadcast signal in a tuner, wherein the broadcast signal includes data groups, each of the data groups including a plurality of sequences of known data and mobile service data including video/audio service data, wherein at least two sequences of the known data have different lengths, the broadcast signal including a specific collection of the data groups included in slots, each slot being a time period for multiplexing mobile service data and main data, and wherein each of the data groups is formed by: demodulating the broadcast signal in a demodulator; acquiring an identifier of the collection of the data groups, from the broadcast signal; and cyclically supplying power to the tuner and the demodulator for receiving the data groups identified by the identifier, wherein the known data are data having predetermined values which are used for channel acquisition in the receiver and same sequences of the known data are inserted in each of the data groups.