Broadcast receiver and method of processing data

• US 8,265,868 B2
• Filed: 07/07/2008
• Issued: 09/11/2012
• 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): Morgan, Robert
• Assistant Examiner(s): SOREY, ROBERT A
• Application Number:
  US12/168,880
• Publication Number:
  US 20090067336A1
• Time in Patent Office: 1,527 Days
• Field of Search: None
• US Class Current: 701/414
• CPC Class Codes: G08G 1/092 Coding or decoding of the information
• CPC Class Codes: H04H 20/55 for traffic information
• CPC Class Codes: H04H 2201/60 characterised in that the receiver comprises more than one tuner
• CPC Class Codes: H04H 40/27 specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
• CPC Class Codes: H04H 60/51 of receiving stations

Abstract

A broadcast receiver and a method of processing data are disclosed. The broadcast receiver includes a signal receiving unit, a position information module, and a navigation unit. The signal receiving unit receives broadcast signal multiplexed mobile broadcast service data including traffic information and main broadcast service data. The position information module searches and generates a current position information of the broadcast receiver. The navigation unit assigns a weight to each link of a route to a destination based on the current position information received and the traffic information included in the mobile broadcast service data and searches for a bypass route based on the weighted link, and then performs route guidance using at least one of current route and the bypass route.

Claims

1. A broadcast receiver comprising:

a tuner for receiving a broadcast signal including mobile broadcast service data and main broadcast service data, the mobile broadcast service data including traffic information, wherein a Reed-Solomon (RS) frame includes at least one data packet corresponding to the mobile broadcast service data, an RS parity generated based upon the mobile broadcast service data, and a Cyclic Redundancy Check (CRC) checksum generated based upon the mobile broadcast service data and the RS parity, and wherein each data group in the broadcast signal includes the mobile broadcast service data, a transmission parameter, signaling information, and known data sequences;

a demodulator for demodulating the received broadcast signal and obtaining, from the signaling information, fast information channel (FIC) data and transmission parameter channel (TPC) data, wherein the FIC data have cross layer information between a physical layer and an upper layer, wherein the TPC data indicate a version of the FIC data, wherein the TPC data are multiplexed with the FIC data, wherein the TPC data are RS encoded, and wherein the FIC data are block interleaved after being RS encoded;

a transmission parameter detector for detecting the transmission parameter;

a block decoder for symbol-decoding the received broadcast signal in block units based on the detected transmission parameter;

an RS frame decoder for performing CRC decoding and RS decoding on the RS frame in order to correct errors in the corresponding mobile broadcast service data

a location information unit for searching and generating current location information of the broadcast receiver; and

a navigation unit for searching for a bypass route based on a weighted link of a current route from a location corresponding to the current location information to a destination and for performing route guidance using at least the current route or the bypass route to facilitate user selection of an optimal route to the destination, the weighted link including congestion information including average speed information and accident information that are received through the traffic information.

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

a known sequence detector for detecting known data linearly inserted within at least one data group; and

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

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

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

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

a plurality of signal receiving units each including an antenna and a tuner; and

a comparison and selection unit for comparing a sensitivity of broadcast signals received via the plurality of signal receiving units and for selecting one of the plurality of signal receiving units according to a result of the comparison in order to continuously receive the traffic information.

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

receiving, in a tuner, a broadcast signal including mobile broadcast service data and main broadcast service data, the mobile broadcast service data including traffic information, wherein a Reed-Solomon (RS) frame includes at least one data packet corresponding to the mobile broadcast service data, an RS parity generated based upon the mobile broadcast service data, and a Cyclic Redundancy Check (CRC) checksum generated based upon the mobile broadcast service data and the RS parity, and wherein each data group in the broadcast signal includes the mobile broadcast service data, a transmission parameter, signaling information, and known data sequences;

demodulating, in a demodulator, the received broadcast signal;

obtaining, in the demodulator from the signaling information, fast information channel (FIC) data and transmission parameter channel (TPC) data, wherein the FIC data have cross layer information between a physical layer and an upper layer, wherein the TPC data indicate a version of the FIC data, wherein the TPC data are multiplexed with the FIC data, wherein the TPC data are RS encoded, and wherein the FIC data are block interleaved after being RS encoded;

detecting, in a transmission parameter detector, the transmission parameter;

symbol-decoding, in a block decoder, the received broadcast signal in block units based on the detected transmission parameter;

performing, in an RS frame decoder, CRC decoding and RS decoding on the RS frame in order to correct errors in the corresponding mobile broadcast service data

searching, in a location information unit, current location information of the broadcast receiver;

searching, in a navigation unit, for a bypass route based on a weighted link of a current route from a location corresponding to the current location information to a destination, the weighted link including congestion information including average speed information and accident information that are received through the traffic information; and

performing, in the navigation unit, route guidance using at least the current route or the bypass route to facilitate user selection of an optimal route to the destination.

6. The method of claim 5, further comprising:

detecting, in a known sequence detector, known data linearly inserted within at least one data group; and

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

7. The method of claim 5, further comprising:

controlling, power controller, power based upon the detected transmission parameter in order to receive a data group including requested mobile broadcast service data.

8. The method of claim 5, further comprising:

selecting one of a plurality of signal receiving units by comparing a sensitivity of received broadcast signals in order to continuously receive the traffic information.