Method of processing traffic information and digital broadcast system

• US 8,018,977 B2
• Filed: 05/24/2010
• Issued: 09/13/2011
• Est. Priority Date: 10/05/2005
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Byoung Gill, Lee, Hyoung Gon, Hong, Ho Taek, Choi, In Hwan, Kim, Jin Pil, Kim, Jong Moon, Kim, Young In, Song, Won Gyu, Kwak, Kook Yeon, Kim, Jin Woo
• Primary Examiner(s): Vu; Huy
• Assistant Examiner(s): Renner; Brandon
• Application Number:
  US12/786,071
• Publication Number:
  US 20100232545A1
• Time in Patent Office: 477 Days
• Field of Search: 348/608, 375/240, 375/265, 375/270, 375/295, 375/355
• US Class Current: 370/532
• CPC Class Codes: G08G 1/092 Coding or decoding of the information
• CPC Class Codes: H04H 20/55 for traffic information
• CPC Class Codes: H04H 20/95 characterised by a specific format, e.g. an encoded audio stream
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0059 Convolutional codes
• CPC Class Codes: H04L 1/0061 Error detection codes
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/23608 Remultiplexing multiplex streams, e.g. involving modifying time stamps or remapping the packet identifiers
• 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

Abstract

A digital broadcast transmitting/receiving system and a method for processing data are disclosed. The method for processing data may enhance the receiving performance of the receiving system by performing additional coding and multiplexing processes on the traffic information data and transmitting the processed data. Thus, robustness is provided to the traffic information data, thereby enabling the data to respond strongly against the channel environment which is always under constant and vast change.

Claims

1. A digital broadcast transmitter, comprising:

a pre-processor configured to pre-process enhanced data and known data, wherein the pre-processor comprises;

a RS frame encoder configured to encode each RS frame for at least one of an error correction and an error detection;

a block encoder configured to encode the enhanced data encoded by the RS frame encoder with a coding rate of G/H, wherein G and H are positive integers and G is less than H;

a group formatter configured to insert data encoded by the block encoder and the known data into a first data group;

a data deinterleaver configured to deinterleave data included in the first data group; and

a packet formatter configured to add header data to the deinterleaved data to generate data packets;

an encoder configured to add first parity data to the pre-processed data;

a data interleaver configured to interleave the encoded data having the first parity data to output a second data group, the second data group including data segments, each data segment consisting of 207 bytes, a first segment and a second segment in the second data group having RS parity data;

a trellis encoder configured to have at least one memory and trellis-encode the interleaved data, the at least one memory being initialized by initialization data when input data corresponds to a beginning of a known data sequence;

a compatible processor configured to calculate second parity data based on the initialization data, and replace the first parity data within the interleaved data with the second parity data; and

a data transmission unit configured to insert synchronization data into the trellis-encoded data, modulate the trellis-encoded data having the synchronization data, and transmit the modulated data.

2. The digital broadcast transmitter of claim 1, wherein the group formatter further inserts header location holders and parity data location holders into the first data group.