Digital broadcasting system and method of processing data in digital broadcasting system

• US 8,687,635 B2
• Filed: 03/22/2011
• Issued: 04/01/2014
• Est. Priority Date: 09/20/2007
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Chul Soo, Choi, In Hwan, Song, Jae Hyung, Kim, Jin Pil, Suh, Jong Yeul
• Primary Examiner(s): HO, DUC CHI
• Application Number:
  US13/069,268
• Publication Number:
  US 20110173515A1
• Time in Patent Office: 1,106 Days
• Field of Search: None
• US Class Current: 370/390
• CPC Class Codes: H04L 1/0045 Arrangements at the receiver end
• CPC Class Codes: H04L 1/007 Unequal error protection for format H04L1/0078; for codes per se H03M13/35
• 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 21/41407 embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/426 Internal components of the client ; Characteristics thereof H04N5/44 takes precedence
• CPC Class Codes: H04N 21/4345 Extraction or processing of SI, e.g. extracting service information from an MPEG stream
• 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
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006
• CPC Class Codes: H04N 21/64322 IP
• CPC Class Codes: H04N 5/455 Demodulation-circuits
• CPC Class Codes: H04N 5/50 Tuning indicators; Automatic tuning control
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

A digital broadcasting system and a data processing method are disclosed. A receiver receives a broadcast signal including mobile service data and main service data. A known data detector detects known data from the broadcast signal. An equalizer performs channel equalization on the mobile service data received by means of the detected known data. An RS frame decoder acquires an RS frame from the channel-equalized mobile service data. A management processor extracts a Generic Stream Encapsulation (GSE) packet from a GSE Base Band (BB) constructing one row of the RS frame, and calculates an IP datagram from the extracted GSE packet. A presentation processor displays broadcast data using data contained in the calculated IP datagram.

Claims

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

performing, by a Reed Solomon (RS) frame encoder, RS encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data, thereby generating an RS frame;

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

transmitting a transmission frame including the group,

wherein a time interval of the transmission frame is divided into a plurality of sub-frames, wherein the TPC data further includes information that indicates a current sub-frame number within the transmission frame, wherein the RS frame belongs to an ensemble, wherein the ensemble comprises a service map table (SMT) including access information of the mobile service data, and wherein an Internet Protocol (IP) datagram carrying the SMT includes a well-known IP address and a well-known User Datagram Protocol (UDP) port number.

2. The method of claim 1, wherein the RS frame comprises a plurality of packets, each of the packets having an M-byte header, k stuffing bytes, and an (N-M-k)-byte payload, wherein the header includes information indicating whether stuffing bytes are included in the packet, wherein the payload includes an IP datagram for at least one of the mobile service data and the SMT, wherein N and M are integers, and wherein k is equal to or greater than 0.

3. The method of claim 2, wherein the header further includes information indicating whether an error is included in the packet.

4. The method of claim 1, wherein at least two of the plurality of known data sequences are spaced 16 segments apart.

5. The method of claim 1, wherein the FIC data and the TPC data are positioned between a first known data sequence and a second known data sequence of the plurality of known data sequences.

6. A broadcast transmitter comprising:

a Reed Solomon (RS) frame encoder for performing RS encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data, thereby generating an RS frame;

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

a transmitting unit for transmitting a transmission frame including the group,

wherein a time interval of the transmission frame is divided into a plurality of sub-frames, wherein the TPC data further includes information that indicates a current sub-frame number within the transmission frame, wherein the RS frame belongs to an ensemble, wherein the ensemble comprises a service map table (SMT) including access information of the mobile service data, and wherein an Internet Protocol (IP) datagram carrying the SMT includes a well-known IP address and a well-known User Datagram Protocol (UDP) port number.

7. The broadcast transmitter of claim 6, wherein the RS frame comprises a plurality of packets, each of the packets having an M-byte header, k stuffing bytes, and an (N-M-k)-byte payload, wherein the header includes information indicating whether stuffing bytes are included in the packet, wherein the payload includes an IP datagram for at least one of the mobile service data and the SMT, wherein N and M are integers, and wherein k is equal to or greater than 0.

8. The broadcast transmitter of claim 7, wherein the header further includes information indicating whether an error is included in the packet.

9. The broadcast transmitter of claim 6, wherein at least two of the plurality of known data sequences are spaced 16 segments apart.

10. The broadcast transmitter of claim 6, wherein the FIC data and the TPC data are positioned between a first known data sequence and a second known data sequence of the plurality of known data sequences.