CA2700260A1 - Digital broadcasting system and data processing method in the digital broadcasting system - Google Patents

Digital broadcasting system and data processing method in the digital broadcasting system Download PDF

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Publication number
CA2700260A1
CA2700260A1 CA2700260A CA2700260A CA2700260A1 CA 2700260 A1 CA2700260 A1 CA 2700260A1 CA 2700260 A CA2700260 A CA 2700260A CA 2700260 A CA2700260 A CA 2700260A CA 2700260 A1 CA2700260 A1 CA 2700260A1
Authority
CA
Canada
Prior art keywords
service data
mobile service
information
frame
broadcast signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2700260A
Other languages
French (fr)
Other versions
CA2700260C (en
Inventor
Chul Soo Lee
In Hwan Choi
Jae Hyung Song
Seung Jong Choi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
Lg Electronics Inc.
Chul Soo Lee
In Hwan Choi
Jae Hyung Song
Seung Jong Choi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lg Electronics Inc., Chul Soo Lee, In Hwan Choi, Jae Hyung Song, Seung Jong Choi filed Critical Lg Electronics Inc.
Priority claimed from PCT/KR2008/005582 external-priority patent/WO2009038402A1/en
Publication of CA2700260A1 publication Critical patent/CA2700260A1/en
Application granted granted Critical
Publication of CA2700260C publication Critical patent/CA2700260C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/2362—Generation or processing of Service Information [SI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • H04N21/2353—Processing of additional data, e.g. scrambling of additional data or processing content descriptors specifically adapted to content descriptors, e.g. coding, compressing or processing of metadata
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation

Abstract

A digital broadcasting system and a data processing method are disclosed. In an aspect of the present invention, the present invention provides a data processing method including receiving a broadcast signal in which main service data and mobile service data are multiplexed, demodulating the received broadcast signal, acquiring demodulation time information of a specific position of a broadcast signal frame, and acquiring fast information channel (FTC) information representing binding information of a virtual channel in an ensemble and the ensemble of the mobile service data, acquiring a mobile service data frame of a specific virtual channel using the FTC information, and reference time information contained in a mobile service data frame, setting the reference time information to a system time clock at a specific time based on the demodulation time information and decoding the mobile service data according to the system time clock.

Claims (14)

  1. [1] A data processing method comprising:
    receiving a broadcastsignal in which main service data and mobile service data are multiplexed;
    demodulating the received broadcast signal, outputting demodulation time in-formation of a specific position of a broadcast signal frame, and acquiring reference time information contained in the mobile service data frame;
    setting the reference time informationto a system time clock at a specific time based on the demodulation time information and decoding the mobile service data according to the system time clock.
  2. [2] The method according to claim 1, wherein the reference time information is a network time protocol (NTP) timestamp.
  3. [3] The method according to claim 1, further comprising:
    displaying contents contained in the mobile service data according to the system time clock.
  4. [4] The method according to claim 1, wherein the demodulation time information includes either one of a frame starting point and a frame end point of the broadcast signal.
  5. [5] The method according to claim 1, wherein the reference time information is set to the system time clock at interval of 968 milliseconds.
  6. [6] The method according to claim 1, wherein the broadcast signal includes a data group in which the mobile service data error-correction-encoded by at least one of code rates, and the mobile service data in the interleaved data group includes periodically-inserted known data.
  7. [7] The method according to claim 1, further comprising:
    acquiring fast information channel (FIC) information representing binding in-formation of a virtual channel in an ensemble and the ensemble of the mobile service data from the mobile service data; and acquiring a mobile service data frame of a specific virtual channel using the FIC
    information, the mobile service data frame conveying the mobile service data.
  8. [8] A digital broadcast system comprising:
    a receiver configured to receive a broadcast signal in which main service data and mobile service data are multiplexed;
    a demodulator configured to demodulate the received broadcastsignal, output de-modulation time information of a specific position of a broadcast signal frame, and output a mobile service data frame from the demodulated broadcast signal;
    a mobile service data frame decoder configured to decoding the mobile service data frame and output a transport packet;
    a transport packet (TP) handler configured to output reference time information contained in the transport packet;
    a manager configured to set the outputted reference time information to a system time clock at a specific time based on the demodulation time information a decoder configured to decode the mobile service data according to the system time clock; and a display configured to display contents contained in the decoded mobile service data.
  9. [9] The digital broadcast system according to claim 8, wherein the reference time in-formation is a network time protocol (NTP) timestamp.
  10. [10] The digital broadcast system according to claim 8, further comprising:
    a buffer configured to temporarily store mobile service data contained in the transport packet according to the system time clock.
  11. [11] The digital broadcast system according to claim 10, wherein the manager controls the display for displaying the contents contained in the mobile service data according to the system time clock.
  12. [12] The digital broadcast system according to claim 8, wherein the reference time information is set to the system time clock at interval of 968 milliseconds.
  13. [13] The digital broadcast system according to claim 8, wherein the broadcast signal includes a data group in which the mobile service data error-correction-encoded by at least one of code rates, and the mobile service data in the interleaved data group includes periodically-inserted known data.
  14. [14] The digital broadcast system according to claim 8, wherein the demodulator outputs fast information channel (FIC) information representing binding in-formation of a virtual channel in an ensemble and the ensemble of the mobile service data, and the mobile service data frame decoder decodes the mobile service data frame using the FIC information.
CA2700260A 2007-09-21 2008-09-19 Digital broadcasting system and data processing method in the digital broadcasting system Expired - Fee Related CA2700260C (en)

Applications Claiming Priority (13)

Application Number Priority Date Filing Date Title
US97408407P 2007-09-21 2007-09-21
US60/974,084 2007-09-21
US97737907P 2007-10-04 2007-10-04
US60/977,379 2007-10-04
US4450408P 2008-04-13 2008-04-13
US61/044,504 2008-04-13
US7668608P 2008-06-29 2008-06-29
US61/076,686 2008-06-29
US8172908P 2008-07-17 2008-07-17
US61/081,729 2008-07-17
KR10-2008-0092423 2008-09-19
PCT/KR2008/005582 WO2009038402A1 (en) 2007-09-21 2008-09-19 Digital broadcasting system and data processing method in the digital broadcasting system
KR1020080092423A KR101597572B1 (en) 2007-09-21 2008-09-19 Digital broadcasting system and method of processing data in digital broadcasting system

Publications (2)

Publication Number Publication Date
CA2700260A1 true CA2700260A1 (en) 2009-03-26
CA2700260C CA2700260C (en) 2013-10-22

Family

ID=40697363

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2700260A Expired - Fee Related CA2700260C (en) 2007-09-21 2008-09-19 Digital broadcasting system and data processing method in the digital broadcasting system

Country Status (5)

Country Link
KR (2) KR101597572B1 (en)
AR (1) AR068504A1 (en)
CA (1) CA2700260C (en)
CL (1) CL2008002804A1 (en)
MX (1) MX2010003072A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120103505A (en) * 2011-03-10 2012-09-19 한국전자통신연구원 Apparatus and methods of synchronizing reference picture with additional picture of real-time broadcasting program
KR102130151B1 (en) * 2013-07-22 2020-07-03 삼성전자주식회사 Transmitting apparatus and receiving apparatus and signal processing method thereof
CN112866754A (en) 2015-09-07 2021-05-28 Lg 电子株式会社 Broadcast signal transmitting apparatus and method, and broadcast signal receiving apparatus and method
KR102597852B1 (en) * 2021-10-21 2023-11-03 주식회사 픽스트리 System for Providing Online Collaboration

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100438635C (en) * 2002-12-16 2008-11-26 皇家飞利浦电子股份有限公司 System for modifying the time-base of a video signal
KR100739108B1 (en) * 2005-11-14 2007-07-13 삼성전자주식회사 Digital broadcasting receive apparatus for improving channel converting speed and method thereof
KR20070059868A (en) * 2005-12-07 2007-06-12 한국전자통신연구원 Apparatus and method for digital broadcast receiver

Also Published As

Publication number Publication date
CA2700260C (en) 2013-10-22
CL2008002804A1 (en) 2009-10-02
KR20150086463A (en) 2015-07-28
KR101634195B1 (en) 2016-06-28
AR068504A1 (en) 2009-11-18
KR20090031322A (en) 2009-03-25
MX2010003072A (en) 2010-04-01
KR101597572B1 (en) 2016-02-25

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MKLA Lapsed

Effective date: 20180919