DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA IN DIGITAL BROADCASTING SYSTEM

• US 20120099581A1
• Filed: 01/04/2012
• Published: 04/26/2012
• Est. Priority Date: 08/24/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: LEE, Chul Soo, CHOI, In Hwan, KWAK, Kook Yeon, KIM, Jin Woo, SONG, Jae Hyung, KIM, Jin Pil, SONG, Won Gyu, LEE, Hyoung Gon, KIM, Byoung Gill, SUH, Jong Yeul
• Granted Patent: US 8,619,818 B2
• Time in Patent Office: Days
• US Class Current: 370/345
• CPC Class Codes: H04J 3/00 Time-division multiplex systems H04J14/00 takes precedence; relay systems H04B7/14; selecting techniques H04Q
• CPC Class Codes: H04L 1/0047 Decoding adapted to other signal detection operation in conjunction with sequence estimation or equalization H04L25/03286
• CPC Class Codes: H04L 1/0065 Serial concatenated codes
• CPC Class Codes: H04L 2001/0093 Point-to-multipoint
• CPC Class Codes: H04L 27/02 Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation H04L27/32 takes precedence
• CPC Class Codes: H04N 21/23614 Multiplexing of additional data and video streams arrangements for simultaneous broadcast of plural pieces of information H04H20/28
• CPC Class Codes: H04N 21/2362 Generation or processing of Service Information [SI]
• CPC Class Codes: H04N 21/2381 Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network transmission of MPEG streams over ATM H04L12/5601
• 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 21/4305 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 21/4381 Recovering the multiplex stream from a specific network, e.g. recovering MPEG packets from ATM cells transmission of MPEG streams over ATM H04L12/5601
• 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 21/462 Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

A digital broadcasting system and a data processing method are disclosed. The data processing method includes receiving a broadcast signal in which main service data and mobile service data are multiplexed, demodulating the broadcast signal to acquire fast-information-channel signaling information including reference time information for a system clock, and outputting demodulation time information of a specific position of a frame of the broadcast signal, decoding the fast-information-channel signaling information, and establishing the reference time information as the system clock at a demodulation time according to on the outputted demodulation time information and decoding the mobile service data according to the system clock.

Claims

1-8. -8. (canceled)

9. A method of transmitting a broadcast signal, the method comprising:

multiplexing mobile data and main data; and

transmitting a transmission frame including the multiplexed mobile data and main data,

wherein a parade of data groups is transmitted during slots within the transmission frame, the slots being time periods for multiplexing the mobile data and the main data,

wherein at least one of the data groups includes the mobile data, signaling information and known data sequences,

wherein the at least one of the data groups further includes data blocks,

wherein a first known data sequence of the known data sequences is located in a third data block of the data blocks,

wherein a second known data sequence and a third known data sequence of the known data sequences are located in a fourth data block of the data blocks,

wherein a fourth known data sequence of the known data sequences is located in a fifth data block of the data blocks,

wherein a fifth known data sequence of the known data sequences is located in a sixth data block of the data blocks,

wherein a sixth known data sequence of the known data sequences is located in a seventh data block of the data blocks,

wherein the signaling information includes FIC (fast information channel) data and TPC (transmission parameter channel) data,

wherein the FIC data includes binding information between a service of the mobile data and an ensemble,

wherein the TPC data includes a version of the FIC data,

wherein the ensemble is a collection of service providing a same quality of service and includes a signaling table describing the service, and

wherein the FIC data further includes at least one FIC segment payload, the at least one FIC segment payload including an ensemble identifier field to identify the ensemble.

10. The method of claim 9, wherein the signaling information is located between the first known data sequence and the second known data sequence.

11. The method of claim 9, wherein the TPC data further includes a total number of the data groups within the transmission frame.

12. An apparatus for transmitting a broadcast signal, the apparatus comprising:

a multiplexer configured to multiplex mobile data and main data; and

a transmission unit configured to transmit a transmission frame including the multiplexed mobile data and main data,

wherein a parade of data groups is transmitted during slots within the transmission frame, the slots being time periods for multiplexing the mobile data and the main data,

wherein at least one of the data groups includes the mobile data, signaling information and known data sequences,

wherein the at least one of the data groups further includes data blocks,

wherein a first known data sequence of the known data sequences is located in a third data block of the data blocks,

wherein a second known data sequence and a third known data sequence of the known data sequences are located in a fourth data block of the data blocks,

wherein a fourth known data sequence of the known data sequences is located in a fifth data block of the data blocks,

wherein a fifth known data sequence of the known data sequences is located in a sixth data block of the data blocks,

wherein a sixth known data sequence of the known data sequences is located in a seventh data block of the data blocks,

wherein the signaling information includes FIC (fast information channel) data and TPC (transmission parameter channel) data,

wherein the FIC data includes binding information between a service of the mobile data and an ensemble,

wherein the TPC data includes a version of the FIC data,

wherein the ensemble is a collection of service providing a same quality of service and includes a signaling table describing the service, and

wherein the FIC data further includes at least one FIC segment payload, the at least one FIC segment payload including an ensemble identifier field to identify the ensemble.

13. The apparatus of claim 12, wherein the signaling information is located between the first known data sequence and the second known data sequence.

14. The apparatus of claim 12, wherein the TPC data further includes a total number of the data groups within the transmission frame.

15. A method of receiving a broadcast signal, the method comprising:

receiving the broadcast signal comprising a parade of data groups transmitted during slots within a transmission frame, the slots being time periods in which mobile data and main data are multiplexed,

wherein at least one of the data groups includes the mobile data, signaling information and known data sequences,

wherein the at least one of the data groups further includes data blocks,

wherein a first known data sequence of the known data sequences is located in a third data block of the data blocks,

wherein a second known data sequence and a third known data sequence of the known data sequences are located in a fourth data block of the data blocks,

wherein a fourth known data sequence of the known data sequences is located in a fifth data block of the data blocks,

wherein a fifth known data sequence of the known data sequences is located in a sixth data block of the data blocks, and

wherein a sixth known data sequence of the known data sequences is located in a seventh data block of the data blocks;

demodulating the broadcast signal;

decoding the signaling information of the demodulated broadcast signal,

wherein the signaling information includes FIC (fast information channel) data and TPC (transmission parameter channel) data,

wherein the FIC data includes binding information between a service of the mobile data and an ensemble,

wherein the TPC data includes a version of the FIC data,

wherein the ensemble is a collection of service providing a same quality of service and includes a signaling table describing the service, and

wherein the FIC data further includes at least one FIC segment payload, the at least one FIC segment payload including an ensemble identifier field to identify the ensemble; and

decoding the demodulated broadcast signal.

16. The method of claim 15, wherein the signaling information is located between the first known data sequence and the second known data sequence.

17. The method of claim 15, wherein the TPC data further includes a total number of the data groups within the transmission frame.

18. An apparatus for receiving a broadcast signal, the apparatus comprising:

a receiving unit configured to receive the broadcast signal comprising a parade of data groups transmitted during slots within the transmission frame, the slots being time periods in which mobile data and main data are multiplexed,

wherein at least one of the data groups includes the mobile data, signaling information and known data sequences, and

wherein the at least one of the data groups further includes data blocks,

wherein a first known data sequence of the known data sequences is located in a third data block of the data blocks,

wherein a second known data sequence of the known data sequences and a third known data sequence of the known data sequences are located in a fourth data block of the data blocks,

wherein a fourth known data sequence of the known data sequences is located in a fifth data block of the data blocks,

wherein a fifth known data sequence of the known data sequences is located in a sixth data block of the data blocks, and

wherein a sixth known data sequence of the known data sequences is located in a seventh data block of the data blocks;

a demodulator configured to demodulate the broadcast signal;

a signaling decoder configured to decode the signaling information of the demodulated broadcast signal,

wherein the signaling information includes FIC (fast information channel) data and TPC (transmission parameter channel) data,

wherein the FIC data includes binding information between a service of the mobile data and an ensemble,

wherein the TPC data includes a version of the FIC data,

wherein the ensemble is a collection of service providing a same quality of service and includes a signaling table describing the service, and

wherein the FIC data further includes at least one FIC segment payload, the at least one FIC segment payload including an ensemble identifier field to identify the ensemble; and

a decoder configured to decode the demodulated broadcast signal.

19. The apparatus of claim 18, wherein the signaling information is located between the first known data sequence and the second known data sequence.

20. The apparatus of claim 18, wherein the TPC data further includes a total number of the data groups within the transmission frame.