Patent ID: 9735922
Date: 2017-08-15
CPC Classifications: H03M,H04B,H04L

Claim:
1. A method for transmitting broadcast signals, the method comprising: encoding service data; time interleaving the encoded service data, wherein the time interleaving further includes: twisted block interleaving the encoded service data by a time interleaving (TI) block, wherein the twisted block interleaving further includes column-wise writing at least one TI block into a memory, wherein a TI block includes at least one FEC (Forward Error Correction) block and at least one virtual FEC block being ahead of the at least one FEC block in the TI block; and diagonal-wise reading out the written at least one TI block and skipping the at least one virtual FEC block; and convolutional interleaving the twisted block interleaved service data; building at least one signal frame including the time interleaved service data; modulating data in the built at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme; and transmitting the broadcast signals having the modulated data.