Broadcast receiving system and method for processing broadcast signals

• US 8,103,208 B2
• Filed: 06/30/2008
• Issued: 01/24/2012
• Est. Priority Date: 06/29/2007
• Status: Active Grant

• 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, Jong Moon, Kim, Jin Woo, Kwak, Kook Yeon, Kim, Byoung Gill
• Primary Examiner(s): GESESSE, TILAHUN
• Application Number:
  US12/165,558
• Publication Number:
  US 20090036090A1
• Time in Patent Office: 1,303 Days
• Field of Search: 455/3.01, 455/3.06, 455/344, 455/66.1
• US Class Current: 455/3.01
• CPC Class Codes: G08G 1/092 Coding or decoding of the information
• CPC Class Codes: H03M 13/09 Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
• CPC Class Codes: H03M 13/1515 Reed-Solomon codes
• CPC Class Codes: H03M 13/271 Row-column interleaver with permutations, e.g. block interleaving with inter-row, inter-column, intra-row or intra-column permutations
• CPC Class Codes: H03M 13/2915 with an error detection code in one dimension
• CPC Class Codes: H04H 20/55 for traffic information
• CPC Class Codes: H04H 60/70 using geographical information, e.g. maps, charts or atlases

Abstract

A broadcast receiving system capable of receiving mobile broadcast data and a method for processing broadcast signals are disclosed. The broadcast receiving system includes a receiving unit, a RS frame decoder, and a memory. The receiving unit receives a broadcast signal including mobile broadcast service data 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 memory stores at least one of a traffic information, a POI (point of interesting), and a map information included in the error-corrected mobile broadcast service data.

Claims

1. A broadcast receiving system comprising:

a receiving unit for receiving a broadcast signal including mobile broadcast service data and main broadcast service data, 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;

a known sequence detector for detecting at least one of a plurality of known data sequences;

a channel equalizer for channel-equalizing the mobile broadcast service data using at least one of the plurality of known data sequences;

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

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

a block decoder for symbol-decoding the mobile broadcast service data in block units, based upon the detected transmission parameters;

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; and

a memory for storing at least traffic information, a POI (point of interest), or map information included in the error-corrected mobile broadcast service data.

2. A method for processing broadcast signals, the method comprising:

receiving a broadcast signal including mobile broadcast service data and main broadcast service data, 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;

detecting at least one of a plurality of known data sequences;

channel-equalizing the mobile broadcast service data using at least one of the plurality of known data sequences;

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

controlling power based upon the detected transmission parameters in order to receive a data group including requested mobile broadcast service data;

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

performing CRC-decoding and RS-decoding on the RS frame in order to correct errors in the corresponding mobile broadcast service data; and

storing at least traffic information, a POI (point of interest), or map information included in the error-corrected mobile broadcast service data.