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

• US 8,059,210 B2
• Filed: 08/25/2008
• Issued: 11/15/2011
• Est. Priority Date: 08/24/2007
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Sang O, Choi, In Hwan, Lee, Chul Soo, Song, Jae Hyung, Kim, Jeong Woo
• Primary Examiner(s): Hirl; Joseph P
• Assistant Examiner(s): PENG, HSIUNGFEI
• Application Number:
  US12/197,972
• Publication Number:
  US 20090070848A1
• Time in Patent Office: 1,177 Days
• Field of Search: None
• US Class Current: 348/725
• CPC Class Codes: H04H 60/11 Arrangements for counter-measures when a portion of broadcast information is unavailable
• CPC Class Codes: H04L 1/0036 arrangements specific to the receiver
• 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: H04L 12/18 for broadcast or conference , e.g. multicast
• CPC Class Codes: H04L 2025/03382 Single of vestigal sideband
• CPC Class Codes: H04L 25/03203 Trellis search techniques
• CPC Class Codes: H04L 27/04 Modulator circuits; Transmitter circuits
• CPC Class Codes: H04L 45/16 Multipoint routing
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04N 1/0036 Alphanumeric symbols
• CPC Class Codes: H04N 19/176 the region being a block, e.g. a macroblock
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/40 Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
• CPC Class Codes: H04N 21/414 Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
• 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 21/61 Network physical structure; Signal processing H04B takes precedence
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006

Abstract

A digital broadcasting system and a data processing method are disclosed. The receiving system of the digital broadcasting system includes a receiving unit, a main service data processor, a mobile service data processor, a controller, and an output controller. The receiving unit receives mobile service data and main service data including the same A/V broadcast signal and receives retransmission channel information. The main service data processor demodulates and error-corrects the received main service data and temporarily stores the processed data. The mobile service data processor demodulates and error-corrects the received mobile service data and temporarily stores the processed data. The controller generates and outputs a control signal based upon the received retransmission channel information and a receiving environment of the receiving system. And, the output controller selects any one of the A/V broadcast signal for the main service and the A/V broadcast signal for the mobile service based upon the control signal of the controller.

Claims

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

receiving a broadcast signal, the broadcast signal comprising mobile service data, a signaling information table including access information of the mobile service data, regularly spaced 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, wherein the information for rapid mobile service acquisition includes transport stream identification information identifying the broadcast signal and current and next (C/N) indication information indicating whether the FIC data is applicable to a current mobile and handheld (M/H) frame or a next mobile and handheld (M/H) frame, and wherein the TPC data includes FIC version information for indicating an update of the FIC data;

demodulating the received broadcast signal;

obtaining the signaling information table from the demodulated broadcast signal; and

obtaining an IP datagram of the mobile service data using the signaling information table,

wherein the mobile service data and the signaling information table are packaged into at least one RS frame belonging to an ensemble, wherein each of the signaling information table and the information for rapid mobile service acquisition further includes an ensemble identifier identifying the ensemble.

2. The method of claim 1, wherein the signaling information table is encapsulated with a user datagram protocol and IP (UDP/IP) header including a well-known IP address and a well-known UDP port number.

3. The method of claim 1, wherein at least two of the known data sequences are spaced 16 segments apart and have different lengths.

4. 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 known data sequences.

5. The method of claim 1, wherein the at least one 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, the payload including the IP datagram of the mobile service data, the header including a type field indicating a type of all packets in the payload, wherein N and M are integers, and k is equal to or greater than 0.

6. A broadcast receiver comprising:

a tuner for receiving a broadcast signal, the broadcast signal comprising mobile service data, a signaling information table including access information of the mobile service data, regularly spaced 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, wherein the information for rapid mobile service acquisition includes transport stream identification information identifying the broadcast signal and current and next (C/N) indication information indicating whether the FIC data is applicable to a current mobile and handheld (M/H) frame or a next mobile and handheld (M/H) frame, and wherein the TPC data includes FIC version information for indicating an update of the FIC data;

a demodulator for demodulating the received broadcast signal;

a first handler for obtaining the signaling information table from the demodulated broadcast signal; and

a second handler for obtaining an IP datagram of the mobile service data using the signaling information table,

wherein the mobile service data and the signaling information table are packaged into at least one RS frame belonging to an ensemble, wherein each of the signaling information table and the information for rapid mobile service acquisition further includes an ensemble identifier to identify the ensemble.

7. The broadcast receiver of claim 6, wherein the signaling information table is encapsulated with a user datagram protocol and IP (UDP/IP) header including a well-known IP address and a well-known UDP port number.

8. The broadcast receiver of claim 6, wherein at least two of the known data sequences are spaced 16 segments apart and have different lengths.

9. The broadcast receiver 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 known data sequences.

10. The broadcast receiver of claim 6, wherein the at least one 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, the payload including the IP datagram of the mobile service data, the header including a type field indicating a type of all packets in the payload, wherein N and M are integers, and k is equal to or greater than 0.

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

performing, by a Reed Solomon (RS) encoder, RS encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data and a signaling information table including access information of the mobile service data, thereby packaging the mobile service data and the signaling information table into at least one RS frame belonging to an ensemble;

mapping the at least one RS frame into a plurality of groups, wherein each of the groups includes a portion of data included in a corresponding RS frame, regularly spaced 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, wherein the information for rapid mobile service acquisition includes transport stream identification information identifying a broadcast signal and current and next (C/N) indication information indicating whether the FIC data is applicable to a current mobile and handheld (M/H) frame or a next mobile and handheld (M/H) frame, and wherein the TPC data includes FIC version information for indicating an update of the FIC data; and

transmitting the broadcast signal including the plurality of groups,

wherein each of the signaling information table and the information for rapid mobile service acquisition further includes an ensemble identifier identifying the ensemble.

12. The method of claim 11, wherein the signaling information table is encapsulated with a user datagram protocol and IP (UDP/IP) header including a well-known IP address and a well-known UDP port number.

13. The method of claim 11, wherein at least two of the known data sequences are spaced 16 segments apart and have different lengths.

14. The method of claim 11, wherein the FIC data and the TPC data are positioned between a first known data sequence and a second known data sequence of the known data sequences.

15. The method of claim 11, wherein the at least one 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, the payload including an IP datagram of the mobile service data, the header including a type field indicating a type of all packets in the payload, wherein N and M are integers, and k is equal to or greater than 0.

16. A broadcast transmitter comprising:

an RS encoder for performing Reed Solomon (RS) encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data and a signaling information table including access information of the mobile service data, thereby packaging the mobile service data and the signaling information table into at least one RS frame belonging to an ensemble;

a group formatting means for mapping the at least one RS frame into a plurality of groups, wherein each of the groups includes a portion of data included in a corresponding RS frame, regularly spaced 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, wherein the information for rapid mobile service acquisition includes transport stream identification information identifying a broadcast signal and current and next (C/N) indication information indicating whether the FIC data is applicable to a current mobile and handheld (M/H) frame or a next mobile and handheld (M/H) frame, and wherein the TPC data includes FIC version information for indicating an update of the FIC data; and

a transmitting means for transmitting the broadcast signal including the plurality of groups,

wherein each of the signaling information table and the information for rapid mobile service acquisition further includes an ensemble identifier identifying the ensemble.

17. The broadcast transmitter of claim 16, wherein the signaling information table is encapsulated with a user datagram protocol and IP (UDP/IP) header including a well-known IP address and a well-known UDP port number.

18. The broadcast transmitter of claim 16, wherein at least two of the known data sequences are spaced 16 segments apart and have different lengths.

19. The broadcast transmitter of claim 16, wherein the FIC data and the TPC data are positioned between a first known data sequence and a second known data sequence of the known data sequences.

20. The broadcast transmitter of claim 16, wherein the at least one 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, the payload including an IP datagram of the mobile service data, the header including a type field indicating a type of all packets in the payload, wherein N and M are integers, and k is equal to or greater than 0.