DTV transmitting system and method of processing broadcast data

• US 9,680,506 B2
• Filed: 07/12/2016
• Issued: 06/13/2017
• Est. Priority Date: 04/29/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Choi, In Hwan, Kim, Jong Moon, Kwak, Kook Yeon, Lee, Hyoung Gon, Song, Won Gyu, Kim, Byoung Gill, Kim, Jin Woo
• Primary Examiner(s): LAMARRE, GUY J
• Application Number:
  US15/208,161
• Publication Number:
  US 20160322988A1
• Time in Patent Office: 336 Days
• Field of Search: 714752, 714756, 714758, 714776, 714780, 714784, 375265, 375 E7026, 37524001, 375301
• CPC Class Codes: H03M 13/1515 Reed-Solomon codes
• CPC Class Codes: H03M 13/2703 the interleaver involving at least two directions
• CPC Class Codes: H03M 13/2792 Interleaver wherein interleaving is performed jointly with another technique such as puncturing, multiplexing or routing
• CPC Class Codes: H03M 13/6522 Intended application, e.g. transmission or communication standard
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0047 Decoding adapted to other signal detection operation in conjunction with sequence estimation or equalization H04L25/03286
• CPC Class Codes: H04L 1/0054 Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
• CPC Class Codes: H04L 1/0058 Block-coded modulation
• CPC Class Codes: H04L 1/0061 Error detection codes
• CPC Class Codes: H04L 1/0065 Serial concatenated codes
• CPC Class Codes: H04L 1/007 Unequal error protection for format H04L1/0078; for codes per se H03M13/35
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/23614 Multiplexing of additional data and video streams arrangements for simultaneous broadcast of plural pieces of information H04H20/28
• CPC Class Codes: H04N 21/2383 Channel coding or modulation of digital bit-stream, e.g. QPSK modulation arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/4348 Demultiplexing of additional data and video streams
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/4382 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

Abstract

A DTV transmitting system includes an encoder, a randomizer, a block processor, a group formatter, a deinterleaver, and a packet formatter. The encoder codes enhanced data for error correction, permutes the coded data, and further codes the permuted data for error detection. The randomizer randomizes the coded enhanced data, and the block processor codes the randomized data at an effective coding rate of 1/H. The group formatter forms a group of enhanced data having data regions, and inserts the coded enhanced data into at least one of the data regions. The deinterleaver deinterleaves the group of enhanced data, and the packet formatter formats the deinterleaved data into corresponding data bytes.

Claims

1. A method of processing broadcast data in a broadcast transmitter, the method comprising:

adding padding data to first data;

randomizing the first data to which the padding data are added;

encoding the randomized first data at a first code rate;

first interleaving the encoded first data;

converting the first-interleaved first data to symbols;

second interleaving the first data converted to the symbols;

encoding signaling data for signaling the first data at a second code rate;

first interleaving the encoded signaling data;

converting the first-interleaved signaling data to symbols;

second interleaving the signaling data converted to the symbols;

modulating data in a frame that includes the second interleaved first data and the second interleaved signaling data; and

transmitting the modulated data,

wherein the frame further includes second data multiplexed with the first data,

wherein the signaling data include multiplexing information,

wherein the frame further includes known data, wherein the known data include a first type of known data and a second type of known data other than the first type of known data, and

wherein at least one of the first type of known data and the second type of known data are used for channel estimation in a broadcast receiver.

2. The method of claim 1, wherein first interleaving the encoded first data performs block interleaving on the encoded first data.

3. The method of claim 1, wherein first interleaving the signaling data performs block interleaving on the signaling data.

4. The method of claim 1, wherein the second type of known data are inserted into pre-determined positions within the frame.

5. A broadcast transmitter for processing broadcast data, the broadcast transmitter comprising:

a first processor to add padding data to first data and randomize the first data to which the padding data are added;

an encoder to encode the randomized first data at a first code rate and encode signaling data for signaling the first data at a second code rate;

an interleaver to first interleave the encoded first data and first interleave the encoded signaling data;

a second processor to convert the first-interleaved first data to symbols, second interleave the first data converted to the symbols, convert the first-interleaved signaling data to symbols, and second interleave the signaling data converted to the symbols;

a modulator to modulate data in a frame that includes the second interleaved first data and the second interleaved signaling data; and

a transmitting unit to transmit the modulated data,

wherein the frame further includes second data multiplexed with the first data,

wherein the signaling data include multiplexing information,

wherein the frame further includes known data, wherein the known data include a first type of known data and a second type of known data other than the first type of known data, and

wherein at least one of the first type of known data and the second type of known data are used for channel estimation in a broadcast receiver.

6. The broadcast transmitter of claim 5, wherein the interleaver performs block interleaving on the encoded first data.

7. The broadcast transmitter of claim 5, wherein the interleaver performs block interleaving on the signaling data.

8. The broadcast transmitter of claim 5, wherein the second type of known data are inserted into pre-determined positions within the frame.