BROADCAST RECEIVER AND METHOD OF PROCESSING DATA

• US 20090034630A1
• Filed: 07/07/2008
• Published: 02/05/2009
• Est. Priority Date: 07/04/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Byoung Gill, Cho, Hyeon Cheol, Lee, Hyoung Gon, Choi, In Hwan, Song, Won Gyu, Kwak, Kook Yeon, Kim, Jin Woo, Kim, Seung Man, Park, Jong Sun, Cho, Il Soo
• Granted Patent: US 8,144,790 B2
• Time in Patent Office: Days
• US Class Current: 375/240.270
• 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 digital broadcast system, comprising:

a receiving unit for receiving a broadcast signal multiplexed mobile broadcast service data including a first information associated with safety/security and main broadcast service data, wherein the mobile broadcast service data configures a RS frame, and wherein the RS frame includes at least one data packet corresponding to the mobile broadcast service data, an RS parity generated based upon the at least one data packet, and a CRC checksum generated based upon the at least one data packet and the RS parity;

a RS frame decoder for performing CRC-decoding and RS-decoding on the RS frame, thereby correcting errors occurred in the corresponding mobile broadcast service data;

a decoding unit for extracting 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; and

an output unit for outputting the first information decoded by the decoder in a form of at least one of a text, a voice message, and an image.

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

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

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

3. The broadcast receiver of claim 2, wherein the first information is different from the second information each other.

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

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

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

a known sequence detector for detecting known data linearly inserted within at least one data group, which configures the RS frame; and

a channel equalizer for channel-equalizing the mobile broadcast service data using the detected known data.

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

a transmission parameter detector for detecting transmission parameters inserted in a predetermined position within at least one data group, which configures the RS frame; and

a power controller for controlling power based upon the detected transmission parameters, thereby receiving a data group including requested mobile broadcast service data.

7. The broadcast receiver of claim 6, further comprising:

a block decoder symbol-decoding the mobile broadcast service data in block units, based upon the detected transmission parameter.

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

receiving a broadcast signal multiplexed mobile broadcast service data including a first information associated with safety/security and main broadcast service data, wherein the mobile broadcast service data configures a RS frame, and wherein the RS frame includes at least one data packet corresponding to the mobile broadcast service data, an RS parity generated based upon the at least one data packet, and a CRC checksum generated based upon the at least one data packet and the RS parity;

performing CRC-decoding and RS-decoding on the RS frame, thereby correcting errors occurred in the corresponding mobile broadcast service data;

extracting 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; and

outputting the first information decoded by the decoder in a form of at least one of a text, a voice message, and an image.

9. The method of claim 8, further comprising:

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

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

10. The method of claim 9, wherein the first information is different from the second information each other.

11. The method of claim 9, further comprising:

performing at least one of travel route search, map matching, and travel route guidance by using a map information and the current position information.

12. The method of claim 8, further comprising:

detecting known data linearly inserted within at least one data group, which configures the RS frame; and

channel-equalizing the mobile broadcast service data using the detected known data.

13. The method of claim 8, further comprising:

detecting transmission parameters inserted in a predetermined position within at least one data group, which configures the RS frame; and

controlling power based upon the detected transmission parameters, thereby receiving a data group including requested mobile broadcast service data.

14. The method of claim 13, further comprising:

symbol-decoding the mobile broadcast service data in block units, based upon the detected transmission parameter.