Digital broadcasting system and method of processing data in digital broadcasting system

• US 8,356,236 B2
• Filed: 07/23/2008
• Issued: 01/15/2013
• Est. Priority Date: 07/23/2007
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Choi, In Hwan, Kwak, Kook Yeon, Kim, Byoung Gill, Kim, Jin Woo, Lee, Hyoung Gon, Song, Won Gyu
• Primary Examiner(s): LE, DIEU MINH T
• Application Number:
  US12/670,497
• Publication Number:
  US 20100275097A1
• Time in Patent Office: 1,637 Days
• Field of Search: 714/784, 714/756, 714/758, 714/776, 714/798
• US Class Current: 714/784
• CPC Class Codes: H03M 13/2915 with an error detection code in one dimension
• CPC Class Codes: H04H 40/18 Arrangements characterised by circuits or components specially adapted for receiving
• CPC Class Codes: H04H 60/11 Arrangements for counter-measures when a portion of broadcast information is unavailable
• CPC Class Codes: H04L 1/005 Iterative decoding, including iteration between signal detection and decoding operation
• CPC Class Codes: H04L 1/0065 Serial concatenated codes
• CPC Class Codes: H04L 1/0066 Parallel concatenated codes
• 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 21/426 Internal components of the client ; Characteristics thereof H04N5/44 takes precedence
• CPC Class Codes: H04N 21/4305 Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets arrangements for synchronising receiver with transmitter by comparing receiver clock with transmitter clock H04L7/0012; arrangements for synchronising receiver with transmitter wherein the receiver takes measures against momentary loss of synchronisation H04L7/0083
• CPC Class Codes: H04N 21/4345 Extraction or processing of SI, e.g. extracting service information from an MPEG stream
• CPC Class Codes: H04N 21/4346 involving stuffing data, e.g. packets or bytes synchronisation arrangements in time-division multiplex systems with different or fluctuating information rates H04J3/073
• 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 5/455 Demodulation-circuits

Abstract

A digital broadcasting system and a method of processing data is disclosed. A receiving system of the digital broadcasting system may include receiving system may include a signal receiving unit, a demodulating unit, a deinterleaver, and a decoder. The signal receiving unit receives a broadcast signal including mobile service data. The mobile service data may construct a code block, the code block including at least one data packet for the mobile service data, an RS parity generated based on the at least one data packet, and a CRC checksum generated based on the at least one data packet and the RS parity. The demodulating unit performs demodulation on the received mobile service data. The deinterleaver deinterleaves the demodulated mobile service data. The decoder corrects error generated from the mobile service data by performing CRC decoding and RS decoding on the code block of the deinterleaved mobile service data.

Claims

1. A receiving system comprising:

a signal receiving unit receiving a broadcast signal including mobile service data, the mobile service data constructing a code block, the code block including at least one data packet for the mobile service data, an RS parity generated based on the at least one data packet, and a CRC checksum generated based on the at least one data packet and the RS parity;

a demodulating unit performing demodulation on the received mobile service data;

a deinterleaver deinterleaving the demodulated mobile service data; and

a decoder correcting error generated from the mobile service data by performing CRC decoding and RS decoding on the code block of the deinterleaved mobile service data.

2. The receiving system of claim 1, wherein the code block is received by being allocated to a first frame and wherein the code block configures a second frame with pilot information, overhead information and a plurality of the first frames.

3. The receiving system of claim 1, further comprising a slot processing unit descrambling the demodulated mobile service data by a slot unit, the slot processing unit combining a base bit and an enhancement bit of the descrambled mobile service data together, the slot processing unit outputting the combined bits to the deinterleaver.

4. The receiving system of claim 1, wherein the decoder further performs N/M turbo coding (where, N<

M) on the deinterleaved mobile service data.

5. The receiving system of claim 1, wherein the decoder performs turbo coding by at least one selected from the group consisting of software and hardware.

6. A method of processing data in a receiving system, comprising the steps of:

receiving a broadcast signal including mobile service data, the mobile service data constructing a code block, the code block including at least one data packet for the mobile service data, an RS parity generated based on the at least one data packet, and a CRC checksum generated based on the at least one data packet and the RS parity;

performing demodulation on the received mobile service data;

deinterleaving the demodulated mobile service data; and

correcting error generated from the mobile service data by performing CRC decoding and RS decoding on the code block of the deinterleaved mobile service data.

7. The method of claim 6, wherein the code block is received by being allocated to a first frame and wherein the code block configures a second frame with pilot information, overhead information and a plurality of the first frames.

8. The method of claim 6, further comprising the steps of:

descrambling the demodulated mobile service data by a slot unit;

combining a base bit and an enhancement bit of the descrambled mobile service data together; and

outputting the combined bits for the deinterleaving.

9. The method of claim 6, further comprising the step of performing N/M turbo coding (where, N<

M) on the deinterleaved mobile service data.