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

• US 8,656,261 B2
• Filed: 07/23/2008
• Issued: 02/18/2014
• Est. Priority Date: 07/23/2007
• 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, Hong, Ho Taek, Kwak, Kook Yeon, Lee, Hyoung Gon, Song, Jae Hyung, Kim, Jin Pil, Song, Won Gyu, Lee, Joon Hui, Kim, Jin Woo, Kim, Byoung Gill, Suh, Jong Yeul, Ahn, Kyu Tae
• Primary Examiner(s): Rizk, Sam
• Assistant Examiner(s): KABIR, ENAMUL MD
• Application Number:
  US12/670,394
• Publication Number:
  US 20100226366A1
• Time in Patent Office: 2,036 Days
• Field of Search: None
• US Class Current: 714/784
• CPC Class Codes: H03M 13/1515 Reed-Solomon codes
• CPC Class Codes: H03M 13/2792 Interleaver wherein interleaving is performed jointly with another technique such as puncturing, multiplexing or routing
• CPC Class Codes: H04H 20/65 Arrangements characterised by transmission systems for broadcast
• CPC Class Codes: H04H 40/18 Arrangements characterised by circuits or components specially adapted for receiving
• CPC Class Codes: H04H 60/11 Arrangements for counter-measures when a portion of broadcast information is unavailable
• CPC Class Codes: H04L 1/004 by using forward error control H04L1/0618 takes precedence; coding, decoding or code conversion, for error detection or correction H03M13/00
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0046 Code rate detection or code type detection H04L1/0038 takes precedence; detection of the data rate H04L25/0262; for packet format H04L1/0091
• CPC Class Codes: H04L 1/0065 Serial concatenated codes
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04L 65/611 for multicast or broadcast systems for broadcast or conference H04L12/18; arrangements for broadcast or distribution combined with broadcast H04H20/00; arrangements for broadcast applications with a direct linkage to broadcast information or to broadcast space-time H04H60/00; selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS], H04W4/06
• CPC Class Codes: H04L 65/70 Media network packetisation
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04N 19/61 in combination with predictive coding
• CPC Class Codes: H04N 19/70 characterised by syntax aspects related to video coding, e.g. related to compression standards
• 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 21/4623 Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message] arrangements for conditional access to broadcast information or to broadcast-related services H04H60/14
• CPC Class Codes: H04N 21/6433 Digital Storage Media - Command and Control Protocol [DSM-CC]

Abstract

The present invention discloses a receiving system and a method of processing data to receiving and processing mobile service data. The receiving system may include a signal receiving unit, a demodulating unit, a data processor, and a middleware engine. The signal receiving unit receives a broadcasting signal, which includes IP packets, payload of the IP packets including a DSM-CC module data part and a DSM-CC header, the DSM-CC module data part including a plurality of DSM-CC objects, and the DSM-CC header including identification information for identifying the DSM-CC module. The demodulating unit demodulates the received broadcasting signal including IP packets. The data processor extracts a plurality of DSM-CC objects of a corresponding payload with reference to DSM-CC header information of the IP packets demodulated by the demodulating unit and configuring a DSM-CC module, which includes identification information and the extracted DSM-CC objects. The middleware engine provides a data broadcasting service by driving application corresponding to the DSM-CC module.

Claims

1. A method of transmitting a broadcast signal in a broadcast signal transmitter, the method comprising:

encoding mobile data for Forward Error Correction (FEC) in order to build Reed Solomon (RS) frames, wherein each of the RS frames includes either a primary RS frame or both primary and secondary RS frames;

dividing each of the RS frames into a plurality of portions;

converting one of the plurality of portions to serial concatenation convolution code (SCCC) blocks;

convolutional encoding the SCCC blocks according to an SCCC code mode that indicates code rates;

mapping the convolutional encoded SCCC blocks to data blocks;

forming data groups including the data blocks, each of the data groups including a plurality of regions, wherein a first region of the plurality of regions includes 4 central data blocks of the data blocks, a second region of the plurality of regions includes 2 data blocks that are concentric about the first region, a third region of the plurality of regions includes 2 data blocks that are concentric about the first and second regions, and a fourth region of the plurality of regions includes 2 data blocks that are concentric about the first, second and third regions; and

transmitting a transmission frame including the data groups, wherein each of the data groups includes first information indicating a code rate of SCCC blocks mapped to the first region, second information indicating a code rate of SCCC blocks mapped to the second region, third information indicating a code rate of SCCC blocks mapped to the third region and fourth information indicating a code rate of SCCC blocks mapped to the fourth region,

wherein at least one of the RS frames includes a plurality of packets, each of the plurality of packets including a header and a payload,

wherein the payload includes a plurality of Internet protocol (IP) datagrams; and

wherein the header includes;

pointer field information that indicates a starting point of a first new IP datagram in the payload; and

error indicator field information that indicates whether any error was detected in the payload.

2. The method of claim 1, further comprising:

encoding signaling data that includes the SCCC code mode, the first information, the second information, the third information and the fourth information.

3. The method of claim 1, wherein each of the data groups further includes known data sequences that are inserted into the first and second regions of a corresponding data group.

4. A broadcast signal transmitter for transmitting a broadcast signal, the broadcast signal transmitter comprising:

an encoder configured to encode mobile data for Forward Error Correction (FEC) in order to build Reed Solomon (RS) frames, wherein each of the RS frames includes either a primary RS frame or both primary and secondary RS frames;

a divider configured to divide each of the RS frames into a plurality of portions;

a converter configured to convert one of the plurality of portions to serial concatenation convolution code (SCCC) blocks;

a convolutional encoder configured to convolutional encode the SCCC blocks according to an SCCC code mode that indicates code rates;

a group formatter configured to map the convolutional encoded SCCC blocks to data blocks in order to form data groups that include the data blocks, each of the data groups including a plurality of regions, wherein a first region of the plurality of regions includes 4 central data blocks of the data blocks, a second region of the plurality of regions includes 2 data blocks that are concentric about the first region, a third region of the plurality of regions includes 2 data blocks that are concentric about the first and second regions, and a fourth region of the plurality of regions includes 2 data blocks that are concentric about the first, second and third regions; and

a transmission processor configured to transmit a transmission frame including the data groups, wherein each of the data groups includes first information indicating a code rate of SCCC blocks mapped to the first region, second information indicating a code rate of SCCC blocks mapped to the second region, third information indicating a code rate of SCCC blocks mapped to the third region and fourth information indicating a code rate of SCCC blocks mapped to the fourth region,

wherein at least one of the RS frames includes a plurality of packets, each of the plurality of packets including a header and a payload,

wherein the payload includes a plurality of Internet protocol (IP) datagrams; and

wherein the header includes;

pointer field information indicating a starting point of a first new IP datagram in the payload; and

error indicator field information that indicates whether any error was detected in the payload.

5. The apparatus of claim 4 further comprising:

a signaling encoder configured to encode signaling data that includes the SCCC code mode, the first information, the second information, the third information and the fourth information.

6. The apparatus of claim 4, wherein each of the data groups further includes known data sequences that are inserted into the first and second regions of a corresponding data group.