Digital broadcasting receiver and method for controlling the same

• US 8,006,271 B2
• Filed: 02/03/2010
• Issued: 08/23/2011
• Est. Priority Date: 09/21/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Choi, In Hwan, Lee, Chul Soo, Song, Jae Hyung, Park, Sang Kil
• Primary Examiner(s): Kumar; Pankaj
• Assistant Examiner(s): FLYNN, RANDY A
• Application Number:
  US12/699,843
• Publication Number:
  US 20100158156A1
• Time in Patent Office: 566 Days
• Field of Search: 725 62- 63, 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 includes performing Reed Solomon (RS) and Cyclic Redundancy Check encoding on mobile data and a table including access information of the data and information identifying a stream where data decryption keys are obtained, thereby forming an RS frame, which is divided into groups. Each group includes a portion of the RS frame data, known data sequences, fast information channel (FIC) data, and transmission parameter channel (TPC) data. The FIC data includes information for rapid mobile service acquisition. The TPC data includes information for indicating an FIC data update. A broadcast signal including the groups is transmitted. The RS frame size is L (rows)×N (column size of the RS frame) bytes. Each row has an M-byte header, leaving the remainder available for data. Data in the rows are packed into the rows end-to-end, with possible wrapping around at the end of each row to the next row.

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 and a signaling information table including access information of the mobile service data and identification information identifying a stream where keys to decrypt the mobile service data are obtained, thereby forming an RS frame;

dividing the RS frame into a plurality of groups, wherein each of the groups includes a portion of data included in the RS frame, 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 indicating an update of the FIC data; and

transmitting a broadcast signal including the plurality of groups,

wherein a size of the RS frame is L (rows)×

N (column size of the RS frame) bytes, each of the rows having an M-byte header leaving the rest of the row available for data, wherein the data in the rows are packed into the rows end-to-end, with possible wrapping around at the end of each row to the next row, and wherein L, M, and N are integers.

2. 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 among the plurality of known data sequences.

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

4. The method of claim 1, wherein the header includes at least one of type information indicating a type of data in the row, information indicating whether or not an error is included in the row, and information indicating whether or not stuffing bytes are included in the row.

5. 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.

6. A broadcast transmitter comprising:

a Reed Solomon (RS) encoder for performing 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 and identification information identifying a stream where keys to decrypt the mobile service data are obtained, thereby forming an RS frame;

a group formatting means for dividing the RS frame into a plurality of groups, wherein each of the groups includes a portion of data included in the RS frame, 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 indicating an update of the FIC data; and

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

wherein a size of the RS frame is L (rows)×

N (column size of the RS frame) bytes, each of the row having an M-byte header leaving the rest of the row available for data, wherein the data in the rows are packed into the rows end-to-end, with possible wrapping around at the end of each row to the next row, and wherein L, M, and N are integers.

7. 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 among the plurality of known data sequences.

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

9. The broadcast transmitter of claim 6, wherein the header includes at least one of type information indicating a type of data in the row, information indicating whether or not an error is included in the row and information indicating whether or not stuffing bytes are included in the row.

10. The broadcast transmitter 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.