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

• US 8,314,891 B2
• Filed: 06/06/2011
• Issued: 11/20/2012
• Est. Priority Date: 08/24/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Chul Soo, Choi, In Hwan, Song, Jae Hyung, Hong, Sung Ryong
• Primary Examiner(s): NATNAEL, PAULOS M
• Application Number:
  US13/154,373
• Publication Number:
  US 20110235725A1
• Time in Patent Office: 533 Days
• Field of Search: 348/723, 348/725, 348/722, 348/729, 348/731, 348/732, 725/38, 725/62, 375/346, 375/295, 455/3.01, 455/3.02
• US Class Current: 348/723
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/414 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 21/434 Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream demultiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00
• 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 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006

Abstract

A digital broadcast receiving system and a method for controlling the same are disclosed. The method includes the steps of receiving a broadcast signal having mobile service data and main service data multiplexed therein, extracting transmission parameter channel (TPC) signaling information and fast information channel (FIC) signaling information from a data group within the received mobile service data, wherein the FIC signaling information includes a current/next (C/N) indicator, and wherein the TPC signaling information includes FIC version information, and detecting ensemble configuration information of a current MH frame.

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;

mapping the RS-CRC encoded mobile service data into data groups, wherein each data group of the data groups includes a portion of fast information channel (FIC) data, transmission parameter channel (TPC) data, and a plurality of known data sequences, wherein the FIC data includes a current and next (C/N) indicator field indicating whether the FIC data is applicable to a mobile and handheld (M/H) frame in which it appears or a next mobile and handheld (M/H) frame, wherein the TPC data includes FIC version information for indicating an update of the FIC data, and wherein the portion of the FIC data and the TPC data are positioned between a first known data sequence and a second known data sequence of the plurality of known data sequences;

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

transmitting the M/H frame including the multiplexed data,

wherein the M/H frame includes a plurality of sub-frames, wherein each sub-frame of the plurality of sub-frames includes a plurality of slots, wherein a data group is transmitted during a slot, wherein the slot is a basic time period for multiplexing of the mobile service data and the main service data, and wherein the TPC data further includes information for indicating a current sub-frame number within the M/H frame.

2. The method of claim 1, wherein the FIC data is divided into a plurality of FIC segment payloads, wherein a size of each FIC segment payload of the FIC segment payloads is 35 bytes, and wherein each data group of the data groups includes an FIC segment, the FIC segment comprising a 2-byte FIC segment header including FIC type information and one of the FIC segment payloads.

3. The method of claim 2, wherein the FIC segment header further includes an error indicator field indicating whether an error is detected in the FIC segment.

4. The method of claim 3, wherein, when the error indicator field is set to 1, the error indicator field indicates that the error is detected in the FIC segment.

5. A broadcast transmitter comprising:

an RS encoder for performing RS encoding and CRC encoding on mobile service data;

a group formatter for mapping the RS-CRC encoded mobile service data into data groups, wherein each data group includes a portion of fast information channel (FIC) data, transmission parameter channel (TPC) data, and a plurality of known data sequences, wherein the FIC data includes a current and next (C/N) indicator field indicating whether the FIC data is applicable to an mobile and handheld (M/H) frame in which it appears or a next M/H frame, wherein the TPC data includes FIC version information for indicating an update of the FIC data, and wherein the portion of the FIC data and the TPC data are positioned between a first known data sequence and a second known data sequence of the plurality of known data sequences;

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

a transmitter for transmitting the M/H frame including the multiplexed data,

wherein the M/H frame includes a plurality of sub-frames, wherein each sub-frame includes a plurality of slots, wherein a data group is transmitted during a slot of the plurality of slots, wherein the slot is a basic time period for multiplexing of the mobile service data and the main service data, and wherein the TPC data further includes information for indicating a current sub-frame number within the M/H frame.

6. The broadcast transmitter of claim 5, wherein the FIC data are divided into a plurality of FIC segment payloads, wherein a size of each FIC segment payload is 35 bytes, and wherein each data group of the data groups includes an FIC segment, the FIC segment comprising a 2-byte FIC segment header including FIC type information and one of the FIC segment payloads.

7. The broadcast transmitter of claim 6, wherein the FIC segment header further includes an error indicator field indicating whether an error is detected in the FIC segment.

8. The broadcast transmitter of claim 7, wherein, when the error indicator field is set to 1, the error indicator field indicates that the error is detected in the FIC segment.