BROADCAST RECEIVER AND METHOD OF PROCESSING DATA

• US 20090037097A1
• Filed: 07/07/2008
• Published: 02/05/2009
• Est. Priority Date: 07/06/2007
• 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 8,165,803 B2
• Time in Patent Office: Days
• US Class Current: 701/207
• 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 digital broadcast system, comprising:

a receiving unit for receiving a broadcast signal multiplexed mobile broadcast service data including information on route prediction 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 storage unit for storing information on route prediction included in the error-corrected mobile broadcast service data; and

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

2. The broadcast receiver of claim 1, 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.

3. The broadcast receiver of claim 1, wherein the navigation unit comprises:

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

a route searching &

predicting unit for using information on a point of arrival, the current position information of the broadcast receiver, and the information on route prediction, thereby estimating 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, thereby outputting a route guidance message starting from the current position to a requested point of arrival.

4. The broadcast receiver of claim 3, wherein the route searching &

predicting unit applies the information on route prediction, so as to predict a route from the current position to the requested point of arrival.

5. The broadcast receiver of claim 3, wherein the route searching &

predicting unit applies the information on route prediction to a point of departure, a point of arrival, and a desired time of arrival, so as to predict a time of departure.

6. The broadcast receiver of claim 3, wherein the guidance message outputting unit outputs a guidance message for a route as at least one of a video message and an audio message.

7. 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.

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

receiving a broadcast signal multiplexed mobile broadcast service data including information on route prediction 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;

storing information on route prediction included in the error-corrected mobile broadcast service data; and

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

9. The method of claim 8, further comprising:

searching and generating the current position information of the broadcast receiver, and outputting the generated current position information of the broadcast receiver.

10. The method of claim 8, wherein the step of predicting a route further comprises:

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

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

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

11. The method of claim 10, wherein, in the step of estimating at least one route information, a route from the current position to the requested point of arrival is predicted by applying the information on route prediction.

12. The method of claim 10, wherein, in the step of estimating at least one route information, the route, a time of departure is predicted by applying the information on route prediction to a point of departure, a point of arrival, and a desired time of arrival.

13. The method of claim 10, wherein, in the step of outputting at least one route guidance message, a guidance message for a route is outputted as at least one of a video message and an audio message.

14. 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.