Broadcast receiver and method of processing data

• US 8,144,790 B2
• Filed: 07/07/2008
• Issued: 03/27/2012
• Est. Priority Date: 07/04/2007
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Jong Sun, Choi, In Hwan, Lee, Hyoung Gon, Song, Won Gyu, Kim, Seung Man, Kim, Jin Woo, Kwak, Kook Yeon, Kim, Byoung Gill, Cho, Il Soo, Cho, Hyeon Cheol
• Primary Examiner(s): Ngo, Ricky
• Assistant Examiner(s): LIU, BEN H
• Application Number:
  US12/168,871
• Publication Number:
  US 20090034630A1
• Time in Patent Office: 1,359 Days
• Field of Search: 375/240.27, 375/286
• US Class Current: 375/240.27
• CPC Class Codes: H04N 19/44 Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
• CPC Class Codes: H04N 19/89 involving methods or arrangements for detection of transmission errors at the decoder
• CPC Class Codes: H04N 21/2146 located in mass transportation means, e.g. aircraft, train or bus flight-deck installations for entertainment or communications B64D11/0015; arrangements specially adapted for transportation systems in broadcast systems H04H20/62; moving wireless networks H04W84/005
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/2362 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 21/41407 embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• 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 21/4382 Demodulation or channel decoding, e.g. QPSK demodulation analog front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/6581 Reference data, e.g. a movie identifier for ordering a movie or a product identifier in a home shopping application

Abstract

A broadcast receiver, and a method of processing data are disclosed. The broadcast receiver includes a receiving unit, a RS frame decoder, a decoding unit, and an output unit. The receiving unit receives a broadcast signal multiplexed mobile broadcast service data including a first information associated with safety/security and main broadcast service data. The RS frame decoder performs CRC-decoding and RS-decoding on the RS frame, thereby correcting errors occurred in the corresponding mobile broadcast service data. The decoding unit extracts the first information from the error-corrected mobile broadcast service data, thereby decoding the extracted data with at least one of an audio decoder, a video decoder, and a data decoder. The output unit outputs the first information decoded by the decoder in a form of at least one of a text, a voice message, and an image.

Claims

1. A broadcast receiver comprising:

a tuner for receiving a broadcast signal including a transmission frame,

wherein a parade of data groups are received during slots within the transmission frame, the slots being basic time periods for multiplexing mobile data and main data,

wherein each data group of multiple parades is assigned to a single transmission frame,

wherein a plurality of consecutive data groups in the parade are assigned to be spaced apart from one another within the transmission frame, and

wherein each of the data groups includes the mobile data, a transmission parameter and known data sequences;

a Reed-Solomon (RS) frame decoder for performing Cyclic Redundancy Check (CRC)-decoding and RS-decoding on the mobile data in order to correct errors in the mobile data;

a demodulator for demodulating the broadcast signal,

wherein each of the data groups is divided into a plurality of regions,

wherein M known data sequences are inserted in the plurality of regions within each of the data groups, and

wherein the transmission parameter of each of the data groups is inserted between a first known data sequence and a second known data sequence of the M known data sequences;

a transmission parameter detector for detecting the transmission parameter of each of the data groups;

a block decoder for symbol-decoding the mobile data included in the received broadcast signal in block units based upon the detected transmission parameter of each of the data groups;

a decoding unit for extracting at least safety information or security information from the error-corrected mobile data in order to decode the extracted at least safety information or security information with at least an audio decoder, a video decoder or a data decoder; and

an output unit for outputting the at least safety information or security information decoded by the decoder in a form of at least text, a voice message or an image.

2. The broadcast receiver of claim 1, further comprising:

a position information module for searching and generating current position information of the broadcast receiver; and

a telecommunication module facilitating communications with a domestic carrier located at a remote site via a wireless telecommunication network, and transmitting information, when an auto-theft incident or accident is detected, wherein the information is associated with at least safety or security, the information including at least a license plate number of a corresponding vehicle or current position information of a corresponding vehicle.

3. The broadcast receiver of claim 2, further comprising:

a navigation unit for performing at least travel route search, map matching or travel route guidance by using map information and the current position information of the corresponding vehicle.

4. The broadcast receiver of claim 1, further comprising:

a known sequence detector for detecting at least one known data included in the received broadcast signal; and

a channel equalizer for channel-equalizing the received mobile data using at least one known data.

5. The broadcast receiver of claim 1, further comprising:

a power controller for controlling power based upon the detected transmission parameter of a data group of the data groups in order to receive the data group including requested mobile data.

6. A method for processing data of a broadcast receiver, the method comprising:

receiving a broadcast signal including a transmission frame,

wherein a parade of data groups are received during slots within the transmission frame, the slots being basic time periods for multiplexing mobile data and main data,

wherein each data group of multiple parades is assigned to a single transmission frame,

wherein a plurality of consecutive data groups in the parade are assigned to be spaced apart from one another within the transmission frame, and

wherein each of the data groups includes the mobile data, a transmission parameter and known data sequences;

performing Cyclic Redundancy Check (CRC)-decoding and Reed-Solomon (RS)-decoding on the mobile data in order to correct errors in the mobile data;

demodulating the broadcast signal,

wherein each of the data groups is divided into a plurality of regions,

wherein M known data sequences are inserted in the plurality of regions within each of the data groups, and

wherein the transmission parameter of each of the data groups is inserted between a first known data sequence and a second known data sequence of the M known data sequences;

detecting the transmission parameter of each of the data groups;

symbol-decoding the mobile data included in the received broadcast signal in block units based upon the detected transmission parameter of each of the data groups;

extracting at least safety information or security information from the error-corrected mobile data in order to decode the extracted at least safety information or security information with at least an audio decoder, a video decoder or a data decoder; and

outputting the at least safety information or security information decoded by the decoder in a form of at least text, a voice message or an image.

7. The method of claim 6, further comprising:

searching and generating current position information of the broadcast receiver;

communicating with a domestic carrier located at a remote site via a wireless telecommunication network; and

transmitting information to the domestic carrier when an auto-theft incident or accident is detected, wherein the information is associated with at least safety or security, the information including at least a license plate number of a corresponding vehicle or a current position information of a corresponding vehicle.

8. The method of claim 7, further comprising:

performing at least travel route search, map matching or travel route guidance by using map information and the current position information of the corresponding vehicle.

9. The method of claim 6, further comprising:

detecting at least one known data included in the received broadcast signal; and

channel-equalizing the received mobile data using the at least one known data.

10. The method of claim 6, further comprising:

controlling power based upon the detected transmission parameter of a data group of the data groups in order to receive the data group including requested mobile data.