Broadcast transmitter and method of processing broadcast service data for transmission

Patent metadata

Field	Value
Publication number	US-9444579-B2
Application number	US-201514878747-A
Country	US
Kind code	B2
Filing date	Oct 8, 2015
Priority date	Jul 4, 2007
Publication date	Sep 13, 2016
Grant date	Sep 13, 2016

Abstract

A method of processing broadcast data in a broadcast transmitter. The method can include randomizing broadcast service data, first encoding the randomized broadcast service data to add parity data to the randomized broadcast service data, second encoding the first-encoded broadcast service data at a code rate of D/E (D<E and D and E are integers equal to or greater than 1, respectively), first interleaving the second-encoded broadcast service data, second interleaving the first-interleaved broadcast service data, encoding signaling data for signaling the broadcast service data, third interleaving the encoded signaling data, fourth interleaving the third-interleaved signaling data, and transmitting the second-interleaved broadcast service data and the fourth-interleaved signaling data through a frame. The frame includes known data, and the signaling data includes information for identifying the code rate and information related to the known data.

First claim

What is claimed is:

1. A method of processing broadcast data in a broadcast transmitter, the method comprising:
randomizing broadcast service data;
first encoding the randomized broadcast service data to add parity data to the randomized broadcast service data;
second encoding the first-encoded broadcast service data at a code rate of D/E,
wherein D<E, and
wherein D and E are integers equal to or greater than 1, respectively;
first interleaving the second-encoded broadcast service data;
second interleaving the first-interleaved broadcast service data;
encoding signaling data for signaling the broadcast service data;
third interleaving the encoded signaling data;
fourth interleaving the third-interleaved signaling data; and
transmitting the second-interleaved broadcast service data and the fourth-interleaved signaling data through a frame,
wherein the frame includes known data, and
wherein the signaling data includes information for identifying the code rate and information related to the known data.

2. The method of claim 1 , further comprising:
permuting the broadcast service data.

3. The method of claim 1 , further comprising:
randomizing the signaling data.

4. The method of claim 1 , wherein the first interleaving performs block interleaving on the second-encoded broadcast service data.

5. A broadcast transmitter for processing broadcast data, the broadcast transmitter comprising:
a randomizer to randomize broadcast service data;
a first encoder to first encode the randomized broadcast service data to add parity data to the randomized broadcast service data;
a second encoder to second encode the first-encoded broadcast service data at a code rate of D/E,
wherein D<E, and
wherein D and E are integers equal to or greater than 1, respectively;
a first interleaver to first interleave the second-encoded broadcast service data;
a second interleaver to second interleave the first-interleaved broadcast service data;
a third encoder to encode signaling data for signaling the broadcast service data;
a third interleaver to third interleave the encoded signaling data;
a fourth interleaver to fourth interleave the third-interleaved signaling data; and
a transmitting unit to transmit the second-interleaved broadcast service data and the fourth-interleaved signaling data through a frame,
wherein the frame includes known data, and
wherein the signaling data includes information for identifying the code rate and information related to the known data.

6. The broadcast transmitter of claim 5 , wherein the broadcast service data is further permuted.

7. The broadcast transmitter of claim 5 , the randomizer further randomizes the signaling data.

8. The broadcast transmitter of claim 5 , wherein the first interleaver performs block interleaving on the second-encoded broadcast service data.

Assignees

• Lg Electronics Inc

Inventors

• Choi In Hwan
• Kwak Kook Yeon
• Kim Byoung Gill
• Kim Jin Woo
• Lee Hyoung Gon
• Song Won Gyu

Classifications

• H04L2025/03382

  Single of vestigal sideband · CPC title

• H04N21/4382

  Demodulation or channel decoding, e.g. QPSK demodulation (analog front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002) · CPC title

• H04L1/0041 Primary

  Arrangements at the transmitter end · CPC title

• H04L1/0057

  Block codes (H04L1/0061, H04L1/0064 take precedence) · CPC title

• H04L1/0065

  Serial concatenated codes · CPC title