Digital television transmitting system and receiving system and method of processing broadcast data

• US 9,564,989 B2
• Filed: 04/01/2014
• Issued: 02/07/2017
• Est. Priority Date: 05/23/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Hyoung Gon, Choi, In Hwan, Kim, Byoung Gill, Song, Won Gyu, Kim, Jong Moon, Kim, Jin Woo
• Primary Examiner(s): Pham, Luu
• Assistant Examiner(s): Kabir, Jahangir
• Application Number:
  US14/242,550
• Publication Number:
  US 20140211884A1
• Time in Patent Office: 1,043 Days
• Field of Search: 375/240.01, 375/240.26, 375/240.27, 375/240.28
• US Class Current: 1/1
• CPC Class Codes: H03M 13/09 Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
• CPC Class Codes: H03M 13/15 Cyclic codes, i.e. cyclic shifts of codewords produce other codewords, e.g. codes defined by a generator polynomial, Bose-Chaudhuri-Hocquenghem [BCH] codes H03M13/17 takes precedence
• CPC Class Codes: H03M 13/1515 Reed-Solomon codes
• CPC Class Codes: H03M 13/23 using convolutional codes, e.g. unit memory codes
• CPC Class Codes: H03M 13/2732 Convolutional interleaver; Interleavers using shift-registers or delay lines like, e.g. Ramsey type interleaver
• CPC Class Codes: H03M 13/2909 Product codes
• CPC Class Codes: H03M 13/2915 with an error detection code in one dimension
• CPC Class Codes: H03M 13/2918 with error correction codes in three or more dimensions, e.g. 3-dimensional product code where the bits are arranged in a cube
• CPC Class Codes: H03M 13/2927 Decoding strategies
• CPC Class Codes: H03M 13/293 with erasure setting
• CPC Class Codes: H03M 13/2933 using a block and a convolutional code H03M13/2957 takes precedence
• CPC Class Codes: H03M 13/356 Unequal error protection [UEP]
• CPC Class Codes: H03M 13/3723 using means or methods for the initialisation of the decoder
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• 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 21/2383 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 21/435 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 a frame encoder, a randomizer, a block processor, a group formatter, a deinterleaver, and a packet formatter. The frame encoder builds an enhanced data frame and adds parity data into the data frame. The frame encoder further divides the data frame into first and second sub-frames including first and second portions of the parity data, respectively, and permutes a plurality of the first sub-frames and a plurality of the second sub-frames, respectively. The randomizer randomizes enhanced data in the permuted sub-frames, and the block processor codes the randomized data at a rate of 1/N1. The group formatter forms a group of enhanced data having one or more data regions and inserts the 1/N1 coded 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 enhanced data packets.

Claims

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

randomizing, by a hardware processor, enhanced data;

first encoding, by the hardware processor, the randomized enhanced data to add first parity data for first forward error correction;

second encoding, by the hardware processor, the first-encoded enhanced data to add second parity data for second forward error correction;

permuting the second-encoded enhanced data;

block interleaving, by the hardware processor, the permuted enhanced data;

third encoding signaling information for signaling the enhanced data to add parity data to the signaling information;

fourth encoding the third-encoded signaling information at a code rate;

modulating the block-interleaved enhanced data and the fourth-encoded signaling information; and

transmitting a broadcast signal including the modulated enhanced data and the modulated signaling information,

wherein the broadcast signal further includes data for performing channel estimation in a broadcast receiver.

2. The method of claim 1, wherein the broadcast signal further includes main data multiplexed with the enhanced data.

3. The method of claim 2, wherein the signaling information includes multiplexing information of the enhanced data and the main data.

4. A broadcast transmitting system for processing broadcast data, the broadcast transmitting system comprising:

a hardware processor configured to;

randomize enhanced data,

first encode the randomized enhanced data to add first parity data for first forward error correction,

second encode the first-encoded enhanced data to add second parity data for second forward error correction,

permute the second-encoded enhanced data,

block interleave the permuted enhanced data,

third encode signaling information for signaling the enhanced data to add parity data to the signaling information, and

fourth encode the third-encoded signaling information at a code rate; and

a transmitter including a modulator which modulates the block-interleaved enhanced data and the fourth-encoded signaling information,

wherein the transmitter is configured to transmit a broadcast signal including the modulated enhanced data and the modulated signaling information, and

wherein the broadcast signal further includes data for performing channel estimation in a broadcast receiver.

5. The broadcast transmitting system of claim 4, wherein the broadcast signal further includes main data multiplexed with the enhanced data.

6. The broadcast transmitting system of claim 5, wherein the signaling information includes multiplexing information of the enhanced data and the main data.