Broadcast receiver and method of processing data

• US 8,165,803 B2
• Filed: 07/07/2008
• Issued: 04/24/2012
• Est. Priority Date: 07/06/2007
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Cho, Il Soo, Cho, Hyeon Cheol, Park, Jong Sun, Choi, In Hwan, Lee, Hyoung Gon, Song, Won Gyu, Kim, Seung Man, Kim, Jin Woo, Kwak, Kook Yeon, Kim, Byoung Gill
• Primary Examiner(s): Algahaim, Helal A
• Application Number:
  US12/168,881
• Publication Number:
  US 20090037097A1
• Time in Patent Office: 1,387 Days
• Field of Search: 701/421, 701/430, 701/540, 370/312, 375/316, 455/3.01, 455/3.02
• US Class Current: 701/421
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/41422 located in transportation means, e.g. personal vehicle arrangements specially adapted for transportation systems in broadcast systems H04H20/62
• 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 21/435 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 21/4425 Monitoring of client processing errors or hardware failure
• CPC Class Codes: H04N 21/4622 Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet web site content organization and management for information retrieval from the Internet G06F16/958; transmission by internet of broadcast information H04H60/82; stock exchange data over packet-switching network H04L12/1804; push services including data channel over packet-switching network H04L12/1859
• CPC Class Codes: H04N 21/478 Supplemental services, e.g. displaying phone caller identification, shopping application
• CPC Class Codes: H04N 21/4786 e-mailing message switching systems, e.g. electronic mail systems H04L51/00

Abstract

A broadcast receiver and a method of processing data are disclosed. The broadcast receiver includes a receiving unit, a RS frame decoder, a storage unit, and a navigation unit. The receiving unit receives a broadcast signal multiplexed mobile broadcast service data including information on route prediction 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 navigation unit uses the information on route prediction and a current position information of the broadcast receiver, thereby predicting at least one route.

Claims

1. A broadcast receiver comprising:

a receiving unit for receiving a broadcast signal comprising a data group, the data group comprising mobile broadcast service data, known data sequences, signaling information and main broadcast service data, the mobile broadcast service data including prediction information,

wherein the data group is divided into data blocks,

wherein a first known data sequence of the known data sequences, a third known data sequence of the known data sequences, a fourth known data sequence of the known data sequences, a fifth known data sequence of the known data sequences and a sixth known data sequence of the known data sequences are spaced 16 segments apart,

wherein a second known data sequence of the known data sequences includes a first M-symbol sequence and a second M-symbol sequence that have a same pattern, and

wherein the second known data sequence and the signaling information are included in a fourth data block of the data blocks;

a Reed-Solomon (RS) frame decoder for performing cyclic redundancy check-decoding (CRC-decoding) and RS-decoding on an RS frame, the RS frame comprising at least one data packet including the mobile broadcast service data, RS parity data generated based on the at least one data packet, and CRC checksum data generated based on the at least one data packet and the RS parity data in order to correct errors in the mobile broadcast service data; and

a storage unit for storing the prediction information included in the error-corrected mobile broadcast service data.

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

a known sequence detector for detecting position information of at least one of the known data sequences; and

a channel equalizer for channel-equalizing the mobile broadcast service data based on the detected position information.

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

a navigation unit for using the prediction information stored in the storage unit and current position information of the broadcast receiver and predicting at least one route.

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

a position information module for searching and generating the current position information of the broadcast receiver, and outputting the generated current position information of the broadcast receiver to the navigation unit.

7. The broadcast receiver of claim 5, wherein the navigation unit comprises:

a map matching unit for matching the current position information of the broadcast receiver with map information stored in the storage unit;

a route searching and predicting unit for using information regarding a point of arrival, the current position information of the broadcast receiver, and the prediction information in order to estimate at least one route information; and

a guidance message outputting unit for using the estimated at least one route information and the map match result in order to output a route guidance message starting from a current position to a requested point of arrival.

8. The broadcast receiver of claim 7, wherein the route searching and predicting unit applies the prediction information to predict a route from the current position to the requested point of arrival.

9. The broadcast receiver of claim 7, wherein the guidance message outputting unit outputs the route guidance message as at least a video message or an audio message.

15. The broadcast receiver of claim 1, wherein the signaling information includes an identifier for identifying a parade to which the data group belongs.

3. A method of processing data in a broadcast receiver, the method comprising:

receiving, by a receiving unit, a broadcast signal comprising a data group, the data group comprising mobile broadcast service data, known data sequences, signaling information and main broadcast service data, the mobile broadcast service data including prediction information,

wherein the data group is divided into data blocks,

wherein a first known data sequence of the known data sequences, a third known data sequence of the known data sequences, a fourth known data sequence of the known data sequences, a fifth known data sequence of the known data sequences and a sixth known data sequence of the known data sequences are spaced 16 segments apart,

wherein a second known data sequence of the known data sequences includes a first M-symbol sequence and a second M-symbol sequence that have a same pattern, and

wherein the second known data sequence and the signaling information are included in a fourth data block of the data blocks;

performing, by a Reed-Solomon (RS) frame decoder, cyclic redundancy check-decoding (CRC-decoding) and RS-decoding on an RS frame, the RS frame comprising at least one data packet including the mobile broadcast service data, RS parity data generated based on the at least one data packet, and CRC checksum data generated based on the at least one data packet and the RS parity data in order to correct errors in the mobile broadcast service data; and

storing, by a storage unit, the prediction information included in the error-corrected mobile broadcast service data.

4. The method of claim 3, further comprising:

detecting position information of at least one of the known data sequences; and

channel-equalizing the mobile broadcast service data based on the detected position information.

10. The method of claim 3, further comprising:

predicting at least one route by using the prediction information stored in the storage unit and current position information of the broadcast receiver.

11. The method of claim 10, further comprising:

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

outputting the generated current position information of the broadcast receiver.

12. The method of claim 10, wherein predicting the at least one route comprises:

matching the current position information of the broadcast receiver with map information;

estimating at least one route information by using information regarding a point of arrival, the current position information of the broadcast receiver, and the prediction information; and

outputting a route guidance message by using the estimated at least one route information and the map match result, the route guidance message starting from a current position to a requested point of arrival.

13. The method of claim 12, wherein estimating the at least one route information comprises predicting a route from the current position to the requested point of arrival by applying the prediction information.

14. The method of claim 12, wherein outputting the route guidance message comprises outputting the route guidance message as at least a video message or an audio message.

16. The method of claim 3, wherein the signaling information includes an identifier for identifying a parade to which the data group belongs.