EP1421796A4 - System and method for broadcast of independently encoded signals on atsc channels - Google Patents
System and method for broadcast of independently encoded signals on atsc channelsInfo
- Publication number
- EP1421796A4 EP1421796A4 EP02750184A EP02750184A EP1421796A4 EP 1421796 A4 EP1421796 A4 EP 1421796A4 EP 02750184 A EP02750184 A EP 02750184A EP 02750184 A EP02750184 A EP 02750184A EP 1421796 A4 EP1421796 A4 EP 1421796A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- information
- mpeg
- encoded
- given
- transport
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 66
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 230000001360 synchronised effect Effects 0.000 claims abstract description 18
- 238000012545 processing Methods 0.000 claims description 9
- 238000005538 encapsulation Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 abstract description 6
- 238000005266 casting Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 description 21
- 230000006835 compression Effects 0.000 description 19
- 238000013459 approach Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001824 photoionisation detection Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012905 input function Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/6437—Real-time Transport Protocol [RTP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
-
- 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
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
- H04N21/234318—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by decomposing into objects, e.g. MPEG-4 objects
-
- 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
- H04N21/2365—Multiplexing of several video streams
-
- 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
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2381—Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network
-
- 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
- H04N21/242—Synchronization processes, e.g. processing of PCR [Program Clock References]
-
- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
-
- 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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6112—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving terrestrial transmission, e.g. DVB-T
Definitions
- the invention relates generally to digital video broadcasting, and more particularly to the application of advanced coding methods for digital video signals.
- HDTV High definition television
- MPEG-4 Motion Picture Experts Group
- MPEG-4 supports low bit rate channels for transmitting signals to devices with small display devices.
- MPEG-2 is significantly less efficient for sending transmissions with low bit rates.
- MPEG-4 part 10 coding it is possible to send quarter- VGA resolution with high quality at 400 Kbps. Since quarter- VGA resolution is approximately VCR quality, 50 such channels could be sent on one ATSC 6 MHz channel.
- the ATSC standard for digital television broadcast specifies a Data Channel in addition to the normal audio and video channels.
- a methodology is provided for using the ATSC Data Channel to broadcast MPEG-4 video streams, for which a new video service can be created.
- the MPEG-4 streams can be encapsulated into MPEG-2 PES (Packetized Elementary Stream) packets or directly into MPEG-2 transport packets. These mechanisms enable the synchronous broadcast of MPEG-4 streams for an ATSC digital TV system without a change to the ATSC standard when data casting.
- An embodiment of the invention uses an ATSC terrestrial transmission system for broadcasting MPEG-4 video and audio streams for mobile and non-mobile receivers.
- Figure 1 is a high-level schematic depiction of an ATSC broadcast system
- Figure 5 provides a schematic depiction of a method for encapsulating MPEG-4 data into packets of an ATSC transport stream according to a third embodiment of the invention.
- HDTV and other advanced television services are provided pursuant to standards promulgated by the Advanced Television Systems Committee (ASTC), the basic such standard being ASTC Standard A/53, ASTC Digital Television Standard.
- ASTC Advanced Television Systems Committee
- MPEG-2 Motion Picture Experts Group
- ISO/TEC 13818 International Standard ISO/TEC 13818, Information Technology - Generic Coding of Moving Pictures and Associated Audio Information.
- FIG. 1 A high-level schematic illustration of the main subsystems of the ATSC advanced television systems is shown in Figure 1.
- system encompasses an Application (video/audio) Coding and Compression subsystem 101, a Service Multiplex And Transport subsystem 102 and an RF/Transmission subsystem 103.
- the application coding and compression subsystem includes Video Coding and Compression 110 and Audio Coding and Compression 112, which are provided pursuant to the ATSC A/53 standard.
- the video application is based on the MPEG-2 standard and that the particulars of these input functions are well known to those skilled in the art, no further discussion of the ASTC video and audio coding and compression functions is needed here.
- a Data Channel 114 is also provided as an input to the system in accordance with ATSC Standard A 90, ATSC Data Broadcast Standard. Although some form of encoding and/or compression may be applied for data input to the system using the Data Channel, such encoding/compression is outside the scope of the Standard, and is accordingly not shown in the figure. Operation of the Data Channel will be described in more detail below.
- the RF/Transmission subsystem (103), which includes Channel Coding function 130, Modulation function 132 and Transmission Media 134, carries out functions well known to those skilled in the art and need not be further described here.
- An output signal from the RF/Transmission subsystem (103), which includes Channel Coding function 130, Modulation function 132 and Transmission Media 134, carries out functions well known to those skilled in the art and need not be further described here.
- the ATSC transport function also follows the MPEG-2 system coding specification wherein the elementary streams may be multiplexed into either a Program Stream or a Transport Stream.
- a Program Stream results from combining one or more streams of PES packets, having a common time base, into a single stream.
- a Transport Stream combines one or more programs with one or more independent time bases into a single stream.
- Transport Stream is also designed for use in environments where errors are likely, such as transmission in lossy or noisy media.
- Data transmitted via the ATSC Data Channel 114 (pursuant to ATSC Standard A/90) is encapsulated into the payload of MPEG-2 Transport Stream packets.
- Various data transmission methodologies are contemplated by the A/90 Standard, including Synchronous Data Streaming and Data Piping.
- Synchronous Data Streaming is defined in the Standard as the streaming of data with timing requirements, in the sense that the data and clock can be regenerated at the receiver into a synchronous data stream.
- Synchronous data streams have no strong timing association with other data streams and are carried in PES packets.
- Data Piping is defined by the standard as a mechanism for delivery of arbitrary user-defined data inside an MPEG-2 Transport Stream.
- the Service Multiplex function 120 includes both an MPEG-2 Service Multiplex 121, which operates to carry out the typical prior art MPEG-2 processing, and a Data Service Multiplex 124, which receives a stream of MPEG-4 VOPs from the MPEG-4 video encoder 115.
- the Service Multiplex 124 uses either PES packets or RTP (Real Time Protocol) packets to encapsulate the MPEG-4 VOPs and the Audio access units into separate PES or RTP streams. The process of such packetization of MPEG-4 units according to the method of the invention is described in detail below.
- the output of Data Service Multiplex 124 is provided to Transport Stream Packetizer
- the PES header contains a presentation time stamp (PTS) relative to the program clock reference (PCR) in the transport header. This PTS synchronizes the MPEG-4 video stream to system time.
- the audio PES packets also include an audio PTS relative to the transport layer PCR. Therefore, the audio and video are synchronized by having the same reference system time (the transport layer PCR).
- the synchronous data header required for this mode of the ATSC data broadcast standard is included in every PES header (once per VOP).
- the synchronous data includes an 8 bit extension for the PTS field, and an optional data rate parameter.
- ATSC Data Piping uses a mechanism that allows any type of data to be encapsulated in MPEG-2 transport packets without any restriction.
- the absence of restrictions allows for Data Piping to use more efficient methods for encapsulating MPEG-4 bit streams than using Synchronous Data Streaming.
- a presentation time stamp (PTS) is, however, still used for every video frame and every audio frame.
- an RTP based protocol is preferably used in this embodiment - i.e., each MPEG-4 VOP uses an RTP header with a time stamp.
- the RTP header contains a 32 bit time stamp parameter.
- each transport packet is constituted by a Transport Header 422-i and a Transport Payload 424-i (again, where i represents a packet index number).
- a pointer can be defined as the first byte of the transport payload, or an extension to the RTP header could include an optional pointer.
- Other such approaches will, however, be apparent to those skilled in the art, and all such approaches are intended to be encompassed within the scope of the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Television Systems (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US30720101P | 2001-07-23 | 2001-07-23 | |
US307201P | 2001-07-23 | ||
PCT/US2002/023031 WO2003010975A1 (en) | 2001-07-23 | 2002-07-19 | System and method for broadcast of independently encoded signals on atsc channels |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1421796A1 EP1421796A1 (en) | 2004-05-26 |
EP1421796A4 true EP1421796A4 (en) | 2008-07-09 |
Family
ID=23188687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02750184A Withdrawn EP1421796A4 (en) | 2001-07-23 | 2002-07-19 | System and method for broadcast of independently encoded signals on atsc channels |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1421796A4 (en) |
JP (1) | JP2004537226A (en) |
KR (1) | KR20040017830A (en) |
CN (1) | CN1552159A (en) |
BR (1) | BR0211406A (en) |
MX (1) | MXPA04000744A (en) |
WO (1) | WO2003010975A1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100619034B1 (en) * | 2004-06-19 | 2006-08-31 | 삼성전자주식회사 | Data synchronization method in digital multimedia data receiver and apparatus therefor |
JP2006262319A (en) * | 2005-03-18 | 2006-09-28 | Toshiba Corp | Broadcast signal sending system |
EP2016772A1 (en) | 2006-05-11 | 2009-01-21 | Thomson Licensing | Method and apparatus for transmitting data |
MX2009004942A (en) | 2007-05-14 | 2009-06-03 | Samsung Electronics Co Ltd | Method and apparatus for transmitting broadcast, method and apparatus for receiving broadcast. |
WO2008156257A2 (en) * | 2007-06-18 | 2008-12-24 | Samsung Electronics Co., Ltd. | Method and apparatus for transporting mobile broadcasting service, and method and apparatus for receiving mobile broadcasting service |
US8995353B2 (en) | 2007-10-09 | 2015-03-31 | Samsung Electronics Co., Ltd. | Method and apparatus for transmitting broadcast data and method and apparatus for receiving broadcast data |
KR101711937B1 (en) * | 2010-12-03 | 2017-03-03 | 삼성전자주식회사 | Apparatus and method for supporting variable length of transport packet in video and audio commnication system |
EP2830318A4 (en) * | 2012-03-23 | 2015-12-02 | Humax Holdings Co Ltd | Hybrid delivery method and reception method for mmt packaged svc video contents |
KR20160082803A (en) | 2014-12-29 | 2016-07-11 | 주식회사 미래텍 | Olefin block copolymer composition, foam and console for automotive interior material and preparation thereof |
CN106233703B (en) * | 2015-02-27 | 2021-07-09 | 索尼公司 | Receiving apparatus, receiving method, transmitting apparatus, and transmitting method |
CN109275035A (en) * | 2016-03-01 | 2019-01-25 | 夏普株式会社 | The method of the opaque user data of signaling |
WO2018039482A1 (en) * | 2016-08-24 | 2018-03-01 | Raduchel William J | Network-enabled graphics processing module |
CN108882054B (en) * | 2017-05-10 | 2020-12-01 | 上海交通大学 | Data packet structure and encapsulation method for STL-SFN transmission process |
CN112599138B (en) * | 2020-12-08 | 2024-05-24 | 北京百瑞互联技术股份有限公司 | Multi-PCM signal coding method, device and medium of LC3 audio coder |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100248427B1 (en) * | 1997-08-12 | 2000-03-15 | 이계철 | Method and device for spliting screen for mpeg video on the compressed domain |
KR100312421B1 (en) * | 1998-11-25 | 2001-12-12 | 오길록 | A conversion method of the compressed moving video on the video communication system |
-
2002
- 2002-07-19 EP EP02750184A patent/EP1421796A4/en not_active Withdrawn
- 2002-07-19 JP JP2003516227A patent/JP2004537226A/en not_active Ceased
- 2002-07-19 BR BR0211406-2A patent/BR0211406A/en not_active Withdrawn
- 2002-07-19 WO PCT/US2002/023031 patent/WO2003010975A1/en active Application Filing
- 2002-07-19 MX MXPA04000744A patent/MXPA04000744A/en not_active Application Discontinuation
- 2002-07-19 CN CNA02817514XA patent/CN1552159A/en active Pending
- 2002-07-19 KR KR10-2004-7000995A patent/KR20040017830A/en not_active Application Discontinuation
Non-Patent Citations (8)
Title |
---|
"INFORMATION TECHNOLOGY - GENERIC CODING OF MOVING PICTURES AND ASSOCIATED AUDIO INFORMATION: SYSTEMS. TECHNOLOGIES DE L'INFORMATION - CODAGE DES IMAGES ANIMEES ET DU SON ASSOCIE: SYSTEMES", INTERNATIONAL STANDARD ISO/IEC, XX, XX, vol. 13818-1, 15 April 1996 (1996-04-15), pages I - XY,01, XP000667435 * |
"Text of ISO/IEC 13818-1/FDAM 7", VIDEO STANDARDS AND DRAFTS, XX, XX, no. W3050, 6 January 2000 (2000-01-06), XP030011196 * |
ATSC: "ATSC Data Broadcast Standard A/90", INTERNET CITATION, 26 July 2000 (2000-07-26), XP002208294, Retrieved from the Internet <URL:http://www.atsc.org/standards.html> [retrieved on 20020731] * |
CARSTEN HERPEL: "Elementary Stream Management in MPEG-4", IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 9, no. 2, 1 March 1999 (1999-03-01), XP011014552, ISSN: 1051-8215 * |
CRINON R J ET AL: "THE ATSC DATA BROADCAST STANDARD", PROCEEDINGS ACM MULTIMEDIA 2000 WORKSHOPS. MARINA DEL REY, CA, NOV. 4, 2000; [ACM INTERNATIONAL MULTIMEDIA CONFERENCE], NEW YORK, NY : ACM, US, vol. CONF. 8, 4 November 2000 (2000-11-04), pages 59 - 62, XP001003694, ISBN: 978-1-58113-311-0 * |
KIKUCHI TOSHIBA T NOMURA NEC S FUKUNAGA OKI Y MATSUI MATSUSHITA H KIMATA NTT Y: "RTP Payload Format for MPEG-4 Audio/Visual Streams; rfc3016.txt", IETF STANDARD, INTERNET ENGINEERING TASK FORCE, IETF, CH, 1 November 2000 (2000-11-01), XP015008799, ISSN: 0000-0003 * |
See also references of WO03010975A1 * |
YONGSUK KIM ET AL: "Interactive broadcast terminal system using MPEG-2 and MPEG-4", CIRCUITS AND SYSTEMS, 2000. PROCEEDINGS. ISCAS 2000 GENEVA. THE 2000 I EEE INTERNATIONAL SYMPOSIUM ON MAY 28-31, 2000, PISCATAWAY, NJ, USA,IEEE, vol. 3, 28 May 2000 (2000-05-28), pages 682 - 685, XP010502623, ISBN: 978-0-7803-5482-1 * |
Also Published As
Publication number | Publication date |
---|---|
BR0211406A (en) | 2004-08-17 |
KR20040017830A (en) | 2004-02-27 |
JP2004537226A (en) | 2004-12-09 |
WO2003010975A1 (en) | 2003-02-06 |
CN1552159A (en) | 2004-12-01 |
MXPA04000744A (en) | 2004-04-20 |
EP1421796A1 (en) | 2004-05-26 |
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