US 9,813,271 B2
Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals
Jongseob Baek, Seoul (KR); Woosuk Ko, Seoul (KR); Sungryong Hong, Seoul (KR); Jaehyung Kim, Seoul (KR); and Byeongkook Jeong, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Oct. 3, 2016, as Appl. No. 15/284,175.
Application 15/284,175 is a continuation of application No. 14/319,883, filed on Jun. 30, 2014, granted, now 9,479,742.
Claims priority of provisional application 61/860,868, filed on Jul. 31, 2013.
Claims priority of provisional application 61/841,405, filed on Jun. 30, 2013.
Prior Publication US 2017/0026214 A1, Jan. 26, 2017
Int. Cl. H04L 27/00 (2006.01); H04L 27/26 (2006.01); H04L 1/00 (2006.01); H04L 5/00 (2006.01); H04N 19/30 (2014.01); H03M 13/27 (2006.01); H04L 1/06 (2006.01)
CPC H04L 27/2602 (2013.01) [H03M 13/2707 (2013.01); H04L 1/0041 (2013.01); H04L 1/0042 (2013.01); H04L 1/0045 (2013.01); H04L 1/0057 (2013.01); H04L 1/0058 (2013.01); H04L 1/0071 (2013.01); H04L 5/0007 (2013.01); H04L 27/26 (2013.01); H04N 19/30 (2014.11); H04L 1/06 (2013.01); H04L 5/0023 (2013.01); H04L 2001/0093 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for transmitting broadcast signals by an apparatus for transmitting broadcast signals, the method comprising:
encoding service data;
mapping the encoded service data to output cells, wherein the cells are included in at least one forward error correction (FEC) block;
time interleaving the mapped service data, wherein the time interleaving includes:
a column-wise writing the at least one FEC block into at least one time interleaving (TI) block,
wherein the at least one TI block includes at least one virtual FEC block,
wherein a number of FEC blocks vary depending on cell rate of the cells included in the at least one FEC block; and
diagonal-wise reading the at least one TI block based on a diagonal-wise reading parameter, wherein cells in the at least one virtual FEC block are skipped during the diagonal-wise reading based on cell position;
building at least one signal frame including the time interleaved service 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.