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

• US 8,850,493 B2
• Filed: 09/23/2011
• Issued: 09/30/2014
• 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: Kim, Jeong Woo, Choi, In Hwan, Lee, Chul Soo, Song, Jae Hyung, Park, Sang O
• Primary Examiner(s): Goodarzi, Nasser
• Assistant Examiner(s): Peng, Fred
• Application Number:
  US13/244,220
• Publication Number:
  US 20120063444A1
• Time in Patent Office: 1,103 Days
• Field of Search: 725/62, 725/63, 725/86, 725/105, 370/345, 375/240
• US Class Current: 725/62
• 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 broadcast transmitter and a method of processing broadcast data in the broadcast transmitter are disclosed. The method includes the steps of performing RS encoding and CRC encoding on mobile service data to build RS frames belonging to an ensemble, wherein each of the RS frames are mapped into data groups, wherein each of the data groups comprises known data sequences and a portion of FIC data including information for rapid mobile service acquisition, wherein the information for rapid mobile service acquisition includes transport stream identification information for identifying a mobile broadcast carrying a mobile service that includes the mobile service data and C/N indication information for indicating whether the FIC data are applicable to a current transmission frame or a next transmission frame, multiplexing data in the data groups and main service data, and transmitting a transmission frame including the multiplexed data.

Claims

1. 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 to build RS frames belonging to an ensemble, wherein each of the RS frames is mapped into data groups that comprise known data sequences and a portion of fast information channel (FIC) data including information for rapid mobile service acquisition, wherein the information for rapid mobile service acquisition includes transport stream identification information for identifying a mobile broadcast carrying a mobile service that includes the mobile service data and current and next (C/N) indication information for indicating whether the FIC data are applicable to a current transmission frame or a next transmission frame;

multiplexing data in the data groups and main service data; and

transmitting a transmission frame including the multiplexed data in the data groups and the main service data,

wherein the transmission frame comprises sub-frames that comprise slots that are time periods for multiplexing the mobile service data and the main service data,

wherein each of the data groups is transmitted during each of the slots,

wherein transmission parameters are transmitted in each slot during which each data group is transmitted, and

wherein the transmission parameters comprise information for indicating a sub-frame number that contains the slot and information for indicating a total number of data groups to be transmitted during one sub-frame of the transmission frame.

2. The method of claim 1, wherein the transmission parameters further comprise an ensemble identifier for identifying the ensemble.

3. The method of claim 1, wherein the transmission parameters further comprise an RS frame continuity counter for serving as a continuity indicator of the RS frames carried in the ensemble.

4. The method of claim 1, wherein:

the FIC data are divided into a plurality of FIC segment payloads; and

each of the data groups includes an FIC segment comprising an FIC segment header including FIC type information and one of the plurality of FIC segment payloads.

5. The method of claim 4, wherein the FIC segment header further includes an error indicator field indicating whether an error is detected in the FIC segment.

6. The method of claim 1, wherein:

at least two of the known data sequences are spaced 16 segments apart; and

at least two of the known data sequences have different lengths.

7. A broadcast transmitter comprising:

a Reed Solomon (RS) encoder for performing RS encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data to build RS frames belonging to an ensemble, wherein each of the RS frames is mapped into data groups that comprise known data sequences and a portion of fast information channel (FIC) data including information for rapid mobile service acquisition, wherein the information for rapid mobile service acquisition includes transport stream identification information for identifying a mobile broadcast carrying a mobile service that includes the mobile service data and current and next (C/N) indication information for indicating whether the FIC data are applicable to a current transmission frame or a next transmission frame;

a multiplexing unit for multiplexing data in the data groups and main service data; and

a transmitting unit for transmitting a transmission frame including the multiplexed data in the data groups and the main service data,

wherein the transmission frame comprises sub-frames,

wherein each of the sub-frames comprises slots that are time periods for multiplexing the mobile service data and the main service data,

wherein each of the data groups is transmitted during each of the slots,

wherein transmission parameters are transmitted in each slot during which each data group is transmitted, and

wherein the transmission parameters comprise information for indicating a sub-frame number that contains the slot and information for indicating a total number of data groups to be transmitted during one sub-frame of the transmission frame.

8. The broadcast transmitter of claim 7, wherein the transmission parameters further comprise an ensemble identifier for identifying the ensemble.

9. The broadcast transmitter of claim 7, wherein the transmission parameters further comprise an RS frame continuity counter for serving as a continuity indicator of the RS frames carried in the ensemble.

10. The broadcast transmitter of claim 7, wherein:

the FIC data are divided into a plurality of FIC segment payloads; and

each of the data groups includes an FIC segment comprising an FIC segment header including FIC type information and one of the plurality of FIC segment payloads.

11. The broadcast transmitter of claim 10, wherein the FIC segment header further includes an error indicator field indicating whether an error is detected in the FIC segment.

12. The broadcast transmitter of claim 7, wherein:

at least two of the known data sequences are spaced 16 segments apart; and

at least two of the known data sequences have different lengths.