Patent ID: 9479742
Filing Date: 2016-10-25
CPC Classification: H03M,H04L,H04N

Claim Text:
1. A method for transmitting broadcast signals, the method comprising: encoding broadcast data corresponding to each of a plurality of physical paths; time interleaving the encoded broadcast data per each physical path, wherein the time interleaving includes: performing a column-wise writing operation on each of a plurality of time interleaving (TI) blocks including one or more forward error correction (FEC) blocks of the encoded broadcast data, wherein at least one TI block further includes at least one virtual FEC block; and performing a diagonal-wise reading on the written plurality of TI blocks, wherein cells corresponding to the at least one virtual FEC block are skipped during the diagonal-wise reading operation; building at least one signal frame including the time interleaved broadcast data; modulating data in the built at least one signal frame by an Orthogonal Frequency Division Multiplex (OFDM) scheme; and transmitting the broadcast signals having the modulated data.