Digital broadcasting receiver and method for controlling the same

• US 8,914,830 B2
• Filed: 07/13/2011
• Issued: 12/16/2014
• Est. Priority Date: 09/21/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Sang Kil, Choi, In Hwan, Song, Jae Hyung, Lee, Chul Soo
• Primary Examiner(s): Kumar, Pankaj
• Assistant Examiner(s): FLYNN, RANDY A
• Application Number:
  US13/182,385
• Publication Number:
  US 20110271298A1
• Time in Patent Office: 1,252 Days
• Field of Search: 725 32- 35, 725/40, 725/62, 455 301- 302, 455/403, 370/312, 375/316
• US Class Current: 725/62
• CPC Class Codes: H04H 20/30 by a single channel
• CPC Class Codes: H04H 20/55 for traffic information
• CPC Class Codes: H04H 20/57 for mobile receivers
• CPC Class Codes: H04L 9/30 Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
• CPC Class Codes: H04N 21/2347 involving video stream encryption
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/23605 Creation or processing of packetized elementary streams [PES]
• CPC Class Codes: H04N 21/23611 Insertion of stuffing data into a multiplex stream, e.g. to obtain a constant bitrate synchronisation arrangements in time-division multiplex systems using bit stuffing for systems with different or fluctuating information rates H04J3/073
• CPC Class Codes: H04N 21/23614 Multiplexing of additional data and video streams arrangements for simultaneous broadcast of plural pieces of information H04H20/28
• CPC Class Codes: H04N 21/2362 Generation or processing of Service Information [SI]
• 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 21/26603 for automatically generating descriptors from content, e.g. when it is not made available by its provider, using content analysis techniques
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006
• CPC Class Codes: H04N 21/8126 involving additional data, e.g. news, sports, stocks, weather forecasts

Abstract

A method of processing broadcast data includes performing RS encoding and CRC encoding on mobile service data to generate an RS frame belonging to an ensemble including a signaling information table including access information of the mobile service data and identification information for identifying a stream where keys to decrypt the mobile service data are obtained, mapping a portion of data in the RS frame to a group including known data sequences, FIC data, and TPC data, wherein the FIC data includes information for rapid mobile service acquisition, and the TPC data includes FIC version information for indicating an update of the FIC data; and transmitting a broadcast signal including the group.

Claims

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

performing RS encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data by a Reed Solomon (RS) encoder to generate an RS frame belonging to an ensemble, the ensemble comprising a signaling information table including access information of the mobile service data and identification information for identifying a stream where keys to decrypt the mobile service data are obtained;

mapping a portion of data in the RS frame to a group that includes known data sequences, fast information channel (FIC) data, and transmission parameter channel (TPC) data, the FIC data including information for rapid mobile service acquisition and the TPC data including FIC version information for indicating an update of the FIC data; and

transmitting a broadcast signal including the group,

wherein the group is formed of data blocks,

wherein a first known data sequence of the known data sequences is inserted into a third data block of the data blocks,

wherein a second known data sequence and a third known data sequence of the known data sequences are inserted into a fourth data block of the data blocks,

wherein a fourth known data sequence of the known data sequences is inserted into a fifth data block of the data blocks,

wherein a fifth known data sequence of the known data sequences is inserted into a sixth data block of the data blocks, and

wherein a sixth known data sequence of the known data sequences is inserted into a seventh data block of the data blocks.

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

3. The method of claim 1, wherein at least two of the known data sequences have different lengths.

4. The method of claim 1, wherein the first known data sequence, the third known data sequence, the fourth known data sequence, the fifth known data sequence and the sixth known data sequence are spaced 16 segments apart.

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

6. A broadcast transmitter comprising:

an RS encoder for performing RS encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data to generate an RS frame belonging to an ensemble, the ensemble comprising a signaling information table including access information of the mobile service data and identification information for identifying a stream where keys to decrypt the mobile service data are obtained;

a group mapping unit for mapping a portion of data in the RS frame to a group that includes known data sequences, fast information channel (FIC) data, and transmission parameter channel (TPC) data, the FIC data including information for rapid mobile service acquisition and the TPC data including FIC version information for indicating an update of the FIC data; and

a transmitting unit for transmitting a broadcast signal including the group,

wherein the group is formed of data blocks,

wherein a first known data sequence of the known data sequences is inserted into a third data block of the data blocks,

wherein a second known data sequence and a third known data sequence of the known data sequences are inserted into a fourth data block of the data blocks,

wherein a fourth known data sequence of the known data sequences is inserted into a fifth data block of the data blocks,

wherein a fifth known data sequence of the known data sequences is inserted into a sixth data block of the data blocks, and

wherein a sixth known data sequence of the known data sequences is inserted into a seventh data block of the data blocks.

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

8. The broadcast transmitter of claim 6, wherein at least two of the known data sequences have different lengths.

9. The broadcast transmitter of claim 6, wherein the first known data sequence, the third known data sequence, the fourth known data sequence, the fifth known data sequence and the sixth known data sequence are spaced 16 segments apart.

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