Broadcast receiver and method of processing data

• US 8,135,077 B2
• Filed: 07/07/2008
• Issued: 03/13/2012
• 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): Ngo, Ricky
• Assistant Examiner(s): LIU, BEN H
• Application Number:
  US12/168,884
• Publication Number:
  US 20090034631A1
• Time in Patent Office: 1,345 Days
• Field of Search: 375/240.27, 375/286
• US Class Current: 375/240.27
• CPC Class Codes: H04N 21/23611 Insertion of stuffing data into a multiplex stream, e.g. to obtain a constant bitrate synchronisation arrangements in time-division multiplex systems using bit stuffing for systems with different or fluctuating information rates H04J3/073
• CPC Class Codes: H04N 21/2362 Generation or processing of Service Information [SI]
• CPC Class Codes: H04N 21/2383 Channel coding or modulation of digital bit-stream, e.g. QPSK modulation arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• 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 21/4382 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 5/44 Receiver circuitry for the reception of television signals according to analogue transmission standards H04N5/14 takes precedence

Abstract

A broadcast receiver and a method of processing data are disclosed. The broadcast receiver includes a broadcasting module, at least one function module, and a controller. The broadcasting module receives and processes mobile broadcast signal. The function module outputs at least one of a video output and an audio output. The controller controls output of at least one of video output and audio output corresponding to each of the broadcasting module and the function module, when a mode shift occurs between the broadcasting module and at least one the function module.

Claims

1. A broadcast receiver comprising:

a broadcasting module for receiving and processing a mobile broadcast signal;

at least one function module for outputting at least a video output or an audio output;

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

a Reed-Solomon (RS) frame decoder for performing Cyclic Redundancy Check (CRC)-decoding and RS-decoding on an RS frame in order to correct errors in the corresponding mobile service data,

wherein the RS frame includes at least one data packet corresponding to the mobile service data, an RS parity generated based upon the at least one data packet and a CRC checksum generated based upon the mobile service data and the RS parity,

wherein the broadcast signal further includes a transmission frame,

wherein a parade of data groups are received through slots within the transmission frame, the slots being basic time periods for multiplexing the mobile service data and the main service data,

wherein each data group of multiple parades is assigned to a single transmission frame,

wherein a plurality of consecutive data groups within the parade are assigned to be spaced apart from one another within the transmission frame,

wherein each of the data groups includes the mobile service data, signaling information and known data sequences, and

wherein the signaling information includes fast information channel (FIC) data and transmission parameter channel (TPC) data indicating a version of the FIC data, the FIC data having binding information between a service of the mobile service data and an ensemble;

a decoding unit for extracting at least map information or traffic information from the error-corrected mobile service data and outputting the extracted at least map information or traffic information; and

a controller for controlling output of the at least the video output or the audio output of the least one function module and output of at least a video output or an audio output of the broadcasting module when a mode shift occurs between the broadcasting module and the at least one function module.

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

a known sequence detector for detecting at least one known data included in the received broadcast signal; and

a channel equalizer for channel-equalizing the received mobile service data using at least one known data.

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

a transmission parameter detector for detecting transmission parameters; and

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

4. The broadcast receiver of claim 1, wherein the decoding unit performs decoding using an audio decoder or a video decoder when the error-corrected mobile service data correspond to packetized elementary stream (PES)-type data.

5. The broadcast receiver of claim 1, wherein the decoding unit performs decoding using a data decoder when the error-corrected mobile service data correspond to section-type data.

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

a user input unit for providing a received user signal to the controller, the user signal for selecting an output of at least a video output or an audio output.

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

receiving compression encoded mobile service data;

processing the received mobile service data;

generating an external event;

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

performing Cyclic Redundancy Check (CRC)-decoding and Reed-Solomon (RS)-decoding on an RS frame in order to correct errors in the corresponding mobile service data,

wherein the RS frame includes at least one data packet corresponding to the mobile service data, an RS parity generated based upon the at least one data packet and a CRC checksum generated based upon the mobile service data and the RS parity,

wherein the broadcast signal further includes a transmission frame,

wherein a parade of data groups are received through slots within the transmission frame, the slots being basic time periods for multiplexing the mobile service data and the main service data,

wherein each data group of multiple parades is assigned to a single transmission frame,

wherein a plurality of consecutive data groups within the parade are assigned to be spaced apart from one another within the transmission frame,

wherein each of the data groups includes the mobile service data, signaling information and known data sequences, and

wherein the signaling information includes fast information channel (FIC) data and transmission parameter channel (TPC) data indicating a version of the FIC data, the FIC data having binding information between a service of the mobile service data and an ensemble;

extracting at least map information or traffic information from the error-corrected mobile service data;

outputting the extracted at least map information or traffic information; and

controlling mutually at least a video output or an audio output of the mobile service data and at least a video output or an audio output of the external event.

8. The method of claim 7, further comprising:

detecting a transmission parameter; and

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

9. The method of claim 7, wherein processing the received mobile service data comprises performing at least carrier recovery or timing recovery using known data information having valid data inserted therein.

10. The method of claim 7, wherein processing the received mobile service data comprises compensating channel distortion included in the mobile service data using known data information having valid data inserted therein.

11. The method of claim 7, wherein processing the received mobile service data comprises performing decoding on the mobile service data in block units.

12. The method of claim 7, further comprising:

receiving a user selection signal in order to control mutually at least a video output or an audio output.

13. The method of claim 7, further comprising:

detecting at least one known data included in the received broadcast signal; and

channel-equalizing the received mobile service data using at least one known data.