DIGITAL BROADCASTING SYSTEM AND DATA PROCESSING METHOD

• US 20110164561A1
• Filed: 12/22/2010
• Published: 07/07/2011
• Est. Priority Date: 06/26/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: SONG, Won Gyu, KIM, Jin Woo, SONG, Jae Hyung, KIM, Jin Pil, KIM, Byoung Gill, CHOI, In Hwan, LEE, Hyoung Gon, LEE, Chul Soo, KWAK, Kook Yeon, SUH, Jong Yeul, LEE, Joon Hui, HONG, Ho Taek
• Granted Patent: US 8,374,252 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• 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 13/2915 with an error detection code in one dimension
• CPC Class Codes: H03M 13/2936 comprising an outer Reed-Solomon code and an inner convolutional code
• CPC Class Codes: H03M 13/2945 using at least three error correction codes H03M13/2957 takes precedence
• CPC Class Codes: H04H 20/30 by a single channel
• CPC Class Codes: H04H 20/57 for mobile receivers
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/006 Trellis-coded modulation
• CPC Class Codes: H04L 1/0065 Serial concatenated codes
• CPC Class Codes: H04L 2001/0093 Point-to-multipoint
• CPC Class Codes: H04L 25/0232 by interpolation between sounding signals
• CPC Class Codes: H04L 25/03159 operating in the frequency domain H04L25/03165, H04L25/03178 take precedence
• CPC Class Codes: H04L 25/03292 with channel estimation circuitry
• CPC Class Codes: H04N 19/89 involving methods or arrangements for detection of transmission errors at the decoder
• 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 21/2393 involving handling client requests scheduling or organising the servicing of application requests H04L67/60
• 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
• CPC Class Codes: H04N 21/6112 : involving terrestrial transmission, e.g. DVB-T

Abstract

A digital broadcasting system and a method of processing data are disclosed, which are robust to error when mobile service data are transmitted. To this end, additional encoding is performed for the mobile service data, whereby it is possible to strongly cope with fast channel change while giving robustness to the mobile service data.

Claims

1. A broadcast transmitter comprising:

a Reed-Solomon (RS) frame encoder for generating an RS frame by adding RS parity data and Cyclic Redundancy Check (CRC) data to an RS frame payload, the RS frame payload comprising a plurality of mobile and handheld (M/H) transport packets, each of the plurality of M/H transport packets including an M-byte header, k stuffing bytes, and an (N-M-k)-byte payload, wherein the (N-M-k)-byte payload includes mobile service data, wherein N and M are natural numbers, and k is equal to or greater than 0;

a group formatter for mapping a portion of the RS frame into at least one region of a group that includes a plurality of regions and adding known data sequences, fast information channel (FIC) data and transmission parameter channel (TPC) data to the group, wherein the FIC data contains information for rapid mobile service acquisition, and wherein the TPC data contains FIC version information for identifying an update of the FIC data; and

a modulator for modulating a broadcast signal including the group.

2. The broadcast transmitter of claim 1, wherein the M-byte header includes field information.

3. The broadcast transmitter of claim 2, wherein the field information comprises error indication information indicating whether an error is included in the M/H transport packet.

4. The broadcast transmitter of claim 2, wherein the field information comprises stuffing indication information indicating whether the k stuffing bytes are included in the M/H transport packet.

5. The broadcast transmitter of claim 1, wherein a value of M is 2.

6. The broadcast transmitter of claim 1, further comprising:

a first encoder for encoding the RS frame with a first code encoding scheme; and

a second encoder for encoding the FIC data and the TPC data with a second code encoding scheme.

7. The broadcast transmitter of claim 6, wherein the first code encoding scheme is a Serial Concatenated Convolutional Code (SCCC) encoding scheme, and wherein the second code encoding scheme is a Parallel Concatenated Convolutional Code (PCCC) encoding scheme.

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

generating, by a Reed-Solomon (RS) frame encoder, an RS frame by adding RS parity data and Cyclic Redundancy Check (CRC) data to an RS frame payload, the RS frame payload comprising a plurality of mobile and handheld (M/H) transport packets, each of the plurality of M/H transport packets including an M-byte header, k stuffing bytes, and an (N-M-k)-byte payload, wherein the (N-M-k)-byte payload includes mobile service data, wherein N and M are natural numbers, and k is equal to or greater than 0;

mapping, by a group formatter, a portion of the RS frame into at least one region of a group that includes a plurality of regions and adding known data sequences, fast information channel (FIC) data and transmission parameter channel (TPC) data to the group, wherein the FIC data contains information for rapid mobile service acquisition, and wherein the TPC data contains FIC version information for identifying an update of the FIC data; and

modulating, by a modulator, a broadcast signal including the group.

9. The method of claim 8, wherein the M-byte header includes field information.

10. The method of claim 9, wherein the field information comprises error indication information indicating whether an error is included in the M/H transport packet.

11. The method of claim 9, wherein the field information comprises stuffing indication information indicating whether the k stuffing bytes are included in the M/H transport packet.

12. The method of claim 8, wherein a value of M is 2.

13. The method of claim 8, further comprising:

encoding the RS frame with a first code encoding scheme; and

encoding the FIC data and the TPC data with a second code encoding scheme.

14. The method of claim 13, wherein the first code encoding scheme is a Serial Concatenated Convolutional Code (SCCC) encoding scheme, and wherein the second code encoding scheme is a Parallel Concatenated Convolutional Code (PCCC) encoding scheme.