1、 INTERNATIONAL TELECOMMUNICATION UNION ITU-T J.600TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (06/2004) SERIES J: CABLE NETWORKS AND TRANSMISSION OF TELEVISION, SOUND PROGRAMME AND OTHER MULTIMEDIA SIGNALS Transport of Large Screen Digital Imagery Transport of Large Screen Digital Imagery (LSDI)
2、 applications that employ MPEG-2 encoded HDTV signals ITU-T Recommendation J.600 ITU-T Rec. J.600 (06/2004) i ITU-T Recommendation J.600 Transport of Large Screen Digital Imagery (LSDI) applications that employ MPEG-2 encoded HDTV signals Summary This Recommendation specifies approaches to the trans
3、port of audio, video and data signals, for those Large Screen Digital Imagery (LSDI) applications that employ HDTV signals encoded in conformity with MPEG-2 specifications. It is based on the use of specifications detailed in existing ITU-T Recommendations in the J-series. Large Screen Digital Image
4、ry is a family of digital imagery systems applicable to programs such as dramas, plays, sporting events, concerts, cultural events, etc., from capture to large screen presentation in high resolution quality in appropriately equipped theatres, halls, and other venues. Source ITU-T Recommendation J.60
5、0 was approved on 29 June 2004 by ITU-T Study Group 9 (2001-2004) under the ITU-T Recommendation A.8 procedure. ii ITU-T Rec. J.600 (06/2004) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunicatio
6、n Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WT
7、SA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall
8、within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Reco
9、mmendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure e.g. interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such
10、 as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommend
11、ation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approva
12、l of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB pat
13、ent database. ITU 2004 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. ITU-T Rec. J.600 (06/2004) iii CONTENTS Page 1 Scope 1 2 Normative references 1 3 Terms and definitions . 2 4 Transport of LSDI application
14、s 2 4.1 Transport of LSDI applications over digital cable television systems . 2 4.2 Transport of MPEG-2 constant bit rate LSDI signals in B-ISDN 3 4.3 Transport of LSDI applications over PDH networks . 3 4.4 Transport of LSDI applications over SDH networks . 3 4.5 Transport of LSDI applications ove
15、r optical fibre . 4 4.6 Transport of LSDI applications using Internet Protocols. 4 4.7 Network-independent protocols for transport of LSDI programs 5 iv ITU-T Rec. J.600 (06/2004) Introduction The Large Screen Digital Imagery (LSDI)1service is a major development of a new and important technology th
16、at will have a profound effect on all media producers, distributors, and exhibitors, and will result in a proliferation of high-quality, large-screen group presentation facilities. The LSDI service is made possible by the recent development of large screen, theatre-sized, bright, high-definition dig
17、ital projectors. That breakthrough, coupled with existing support systems for high-definition television distribution, storage and play-out, allows the implementation of a LSDI service based on the use of high-resolution television systems. The service hinges on the availability of the LSDI venue a
18、digital theatre, an auditorium, or a place for collective viewing. Programs delivered to LSDI presentation venues will be in digital form at various quality levels from future very high resolution through HDTV, possibly down to digital SDTV quality. They may include real-time and non-real-time progr
19、ams such as stage productions, concerts, sporting events, documentaries, cultural and industrial programming. Those programs may need to be delivered to LSDI presentation venues by satellite, cable, optical fibre, terrestrial broadcasting or via recorded media, in the streaming or in the guaranteed-
20、delivery mode. They will generally be stored on and played-out from servers or other play-out devices placed in the presentation venue. This Recommendation gathers the specifications present in the J-series of ITU-T Recommendations, applicable to the transport of MPEG-2 encoded HDTV signals to LSDI
21、presentation venues, over the various media that fall in the scope of ITU-T Study Group 9. _ 1Large Screen Digital Imagery is a family of digital imagery systems applicable to programs such as dramas, plays, sporting events, concerts, cultural events, etc., from capture to large screen presentation
22、in high resolution quality in appropriately equipped theatres, halls, and other venues. ITU-T Rec. J.600 (06/2004) 1 ITU-T Recommendation J.600 Transport of Large Screen Digital Imagery (LSDI) applications that employ MPEG-2 encoded HDTV signals 1 Scope This Recommendation specifies approaches to th
23、e transport of audio, video and data signals, for those LSDI applications that employ HDTV signals, encoded in conformity with MPEG-2 specifications. It is based on the use of specifications given in existing ITU-T Recommendations in the J-series. 2 Normative references The following ITU-T Recommend
24、ations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are theref
25、ore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-
26、alone document, the status of a Recommendation. ITU-T Recommendation J.82 (1996), Transport of MPEG-2 constant bit rate television signals in B-ISDN. ITU-T Recommendation J.83 (1997), Digital multi-programme systems for television, sound and data services for cable distribution. ITU-T Recommendation
27、 J.94 (1998), Service information for digital broadcasting in cable television systems. ITU-T Recommendation J.111 (1998), Network independent protocols for interactive systems. ITU-T Recommendation J.112 (1998), Transmission systems for interactive cable television services. Annex A/J.112 (2001), D
28、igital Video Broadcasting: DVB interaction channel for Cable TV (CATV) distribution systems. Annex B/J.112 (2004), Data-over-cable service interface specifications: Radio-frequency interface specification. Annex C/J.112 (2002), Data-over-cable service interface specification: Radio-frequency interfa
29、ce specification using QAM technique. ITU-T Recommendation J.120 (2000), Distribution of sound and television programs over the IP network. ITU-T Recommendation J.121 (2002), Quality control protocol for webcasting. ITU-T Recommendation J.124 (2004), Multiplexing format for multimedia webcasting ove
30、r TCP/IP networks. ITU-T Recommendation J.131 (1998), Transport of MPEG-2 signals in PDH networks. ITU-T Recommendation J.132 (1998), Transport of MPEG-2 signals in SDH networks. ITU-T Recommendation J.181 (2004), Digital program insertion cueing message for cable television systems. 2 ITU-T Rec. J.
31、600 (06/2004) ITU-T Recommendation J.184 (2001), Digital broadband delivery system: Out-of-band transport. ITU-T Recommendation J.185 (2002), Transmission equipment for transferring multi-channel television signals over optical access networks by FM conversion. ITU-T Recommendation J.186 (2002), Tra
32、nsmission equipment for multi-channel television signals over optical access networks by sub-carrier multiplexing (SCM). ITU-T Recommendation J.187 (2002), Transport mechanism for component-coded digital high-definition television signals using MPEG-2 video coding including all service elements for
33、contribution and primary distribution. ITU-T Recommendation J.189 (2002), Seamless splicing for MPEG-2 bit streams. 3 Terms and definitions This Recommendation defines the following terms: 3.1 LSDI presentation venue: The venue (a theatre, an auditorium or another venue for group viewing) where LSDI
34、 programs are presented to a collective audience. 3.2 LSDI service: A service whereby programs are distributed in the form of digital signals, in real-time or non-real-time, for collective viewing in theatres or other group venues equipped with appropriate electronic projectors, to provide excellent
35、 presentation in terms of picture and sound quality, size of the presentation screen, and presentation environment. 3.3 LSDI application: An instancing of the LSDI service, designed to meet a specific set of user requirements. 4 Transport of LSDI applications The specifications contained in the J-se
36、ries ITU-T Recommendations listed below apply as appropriate to the transport of LSDI applications that employ MPEG-2 encoded HDTV signals. 4.1 Transport of LSDI applications over digital cable television systems The following ITU-T Recommendations apply to the transport of LSDI applications over di
37、gital cable television systems. ITU-T Rec. J.83: Digital multi-programme systems for television, sound and data services for cable distribution. This Recommendation specifies the framing structure, channel coding and modulation for digital multi-programme television, sound and data signals distribut
38、ed by cable networks. The system input is specified to be the MPEG-2 transport layer. Being highly flexible, the MPEG-2 transport layer can be configured to deliver any desired mix of television, sound and data signals, including LSDI programs with the attendant ancillary signals. ITU-T Rec. J.94 +
39、Amendments 1 and 2: Service information for digital broadcasting in cable television systems. This Recommendation and its amendments define the Service Information that conveys the relevant description of the services contained in a multiplex of audio, video, and data that is distributed by cable te
40、levision networks. The service information is specified to be contained within the MPEG-2 transport layer as Program Specific Information (PSI). The mechanism provides some ancillary data capacity in the forward channel, which can for instance be used to accommodate program related services such as
41、conditional access and copy protection. ITU-T Rec. J.112 + Annexes A, B and C: Transmission systems for interactive cable television services. This Recommendation extends the scope of ITU-T Rec. J.83 to make provision for bidirectional data flow over hybrid fibre-coaxial cables for interactive ITU-T
42、 Rec. J.600 (06/2004) 3 services. (It can be expected that the LSDI environment will need interactivity mainly for two-way messaging dealing with transport issues.) ITU-T Rec. J.181: Digital program insertion cueing message for cable television systems. This Recommendation supports the splicing of M
43、PEG-2 transport streams for the purpose of Digital Program Insertion, which includes advertisement insertion and insertion of other content types. An in-stream messaging mechanism is defined to signal splicing and insertion opportunities. A technique for carrying notification of upcoming Splice Poin
44、ts in the transport stream is specified. ITU-T Rec. J.184: Digital broadband delivery system: Out-of-band transport. This Recommendation describes the Physical Layer and Data Link Layer (including the MAC Layer) used in cable networks which employ an Out-Of-Band channel architecture. There are two m
45、ethods used for Out-Of-Band (OOB) transport in cable systems, respectively denoted as Mode A and Mode B. This Recommendation details the specifications of both methods. 4.2 Transport of MPEG-2 constant bit rate LSDI signals in B-ISDN The following ITU-T Recommendation applies to the transport of MPE
46、G-2 constant bit rate LSDI signals in B-ISDN. ITU-T Rec. J.82: Transport of MPEG-2 constant bit rate television signals in B-ISDN. This Recommendation covers the transport of television signals in Broadband-ISDN, when they are encoded and transmitted in compliance with MPEG-2 systems with a constant
47、 bit rate. Broadband ISDN is based on the Asynchronous Transfer Mode (ATM). Other ITU-T Recommendations which apply are those of the I-series concerning ATM. 4.3 Transport of LSDI applications over PDH networks The following ITU-T Recommendation applies to the delivery of LSDI applications over PDH
48、networks. ITU-T Rec. J.131: Transport of MPEG-2 signals in PDH networks. This Recommendation specifies the structure of MPEG-2 transport streams within PDH networks working at hierarchical bit rates of 1544 kbit/s, 2048 kbit/s, 6312 kbit/s, 34 368 kbit/s, 44 736 kbit/s and 139 264 kbit/s specified i
49、n ITU-T Rec. G.702. The equipment considered is the Network Adapter, which performs the adaptation between MPEG-2 transport streams and the interfaces of PDH networks. 4.4 Transport of LSDI applications over SDH networks The following ITU-T Recommendation applies to the delivery of LSDI applications over SDH networks. ITU-T Rec. J.132: Transport of MPEG-2 signals in SDH networks. This Recommendation specifies the structure of MPEG-2 transport streams within SDH networks working at the hierarchical bit rate of 155 520 k
