Method of processing traffic information and digital broadcast system

Patent metadata

Field	Value
Publication number	US-RE46891-E
Application number	US-201414534912-A
Country	US
Kind code	E1
Filing date	Nov 6, 2014
Priority date	Oct 5, 2005
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

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.

First claim

What is claimed is:

1. A broadcast transmitter comprising:
a randomizer for randomizing enhanced data; a first encoder for Reed Solomon (RS) encoding and Cyclic Redundancy Check (CRC) encoding the randomized enhanced data; a block processor for encoding the RS-CRC encoded enhanced data at a coding rate of 1/H, wherein H is greater than 1; a group formatting unit for forming a data group including the encoded enhanced data and de-interleaving data of the data group, wherein the formed data group further includes main data place holders, known data sequences, trellis initialization data, MPEG header place holders, and RS parity data place holders; a packet formatter for removing the RS parity data place holders and the main data place holders from the data group in which data are deinterleaved and replacing the MPEG header place holders in the data group, in which data are deinterleaved, with MPEG headers, thereby outputting enhanced data packets; a first multiplexer for multiplexing the enhanced data packets with main data packets including main data; a second encoder for adding RS parity data to the multiplexed enhanced and main data packets by RS encoding the main data packets of the multiplexed enhanced and main data packets with a systematic RS encoding scheme and RS encoding the enhanced data packets of the multiplexed enhanced and main data packets with a non-systematic RS encoding scheme; and an interleaver for interleaving data of the RS-encoded enhanced and main data packets.

2. The broadcast transmitter of claim 1 , wherein the interleaver is a convolutional data byte interleaver.

3. The broadcast transmitter of claim 1 , further comprising:
a trellis encoder for trellis encoding the interleaved data, wherein at least one memory included in the trellis encoder is initialized when the trellis initialization data are inputted to the trellis encoder.

4. The broadcast transmitter of claim 3 , further comprising:
a second multiplexer for multiplexing the trellis-encoded data with field synchronization data and segment synchronization data.

5. A method of processing broadcast data in a broadcast transmitter, the method comprising:
randomizing, by a randomizer, enhanced data;
Reed Solomon (RS) encoding and Cyclic Redundancy Check (CRC) encoding, by a first encoder, the randomized enhanced data;
encoding, by a block processor, the RS-CRC encoded enhanced data at a coding rate of 1/H, wherein H is greater than 1;
forming a data group including the encoded enhanced data, wherein the formed data group further includes main data place holders, known data sequences, trellis initialization data, MPEG header place holders, and RS parity data place holders;
de-interleaving data of the data group;
removing, by a packer formatter, the RS parity data place holders and the main data place holders from the data group in which data are deinterleaved and replacing the MPEG header place holders in the data group, in which data are deinterleaved, with MPEG headers, thereby outputting enhanced data packets;
multiplexing the enhanced data packets with main data packets including main data;
adding, by a second encoder, RS parity data to the multiplexed enhanced and main data packets by RS encoding the main data packets of the multiplexed enhanced and main data packets with a systematic RS encoding scheme and RS encoding the enhanced data packets of the multiplexed enhanced and main data packets with a non-systematic RS encoding scheme; and
interleaving data of the RS-encoded enhanced and main data packets.

6. The method of claim 5 , wherein the data of the RS-encoded enhanced and main data packets are interleaved by a convolutional data byte interleaver.

7. The method of claim 5 , further comprising:
trellis encoding, by a trellis encoder, the interleaved data, wherein at least one memory included in the trellis encoder is initialized when the trellis initialization data are inputted to the trellis encoder.

8. The method of claim 7 , further comprising:
multiplexing the trellis-encoded data with field synchronization data and segment synchronization data.

9. The method of claim 5, wherein the known data sequences are periodically located.

Assignees

• Lg Electronics Inc

Inventors

• Kim Jin Pil
• Kim Young In
• Hong Ho Taek
• Choi In Hwan
• Kwak Kook Yeon
• Lee Hyoung Gon
• Kim Byoung Gill
• Kim Jin Woo
• Song Won Gyu
• Kim Jong Moon

Classifications

• H04L1/0071

  Use of interleaving (interleaving per se H03M13/27) · CPC title

• H04H20/55 Primary

  for traffic information · CPC title

• H04L2001/0093

  Point-to-multipoint · CPC title

• H04H20/95

  characterised by a specific format, e.g. an encoded audio stream · CPC title

• H04L1/0065

  Serial concatenated codes · CPC title