1、STD-ITU-T RECMN T.424-ENGL L77b i8b257L Ob22182 Tii INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU SERIES T: TERMINAL EQUIPMENTS AND PROTOCOLS FOR TELEMATIC SERVICES Terminals for telematic services T.424 (O 7/9 6) Information technology - Open Document A
2、rchitecture (ODA) and interchange format - Temporal relationships and non-linear structures ITU-T Recommendation T.424 (Previously “CCIlT Recommendation”) STD-ITU-T RECMN T-424-ENGL 179b 48b2571 Ob22183 780 ITU-T T-SERIES RECOMMENDATIONS TERMINAL EQUIPMENTS AND PROTOCOLS FOR TELEMATIC SERVICES Forfi
3、rfher details, please refer to ITU-T Lisi of Recommendations. STDeITU-T RECMN TmqZY-ENGL 199b 48b2571 Ub22184 817 Series A Series B Series C Series D Series E Series F Series G Series H Series I Series J Series K Series L Series M Series N Series O Series P Series Q Series R Series S Series T Series
4、 U Series V Series X Series Z ITU-T RECOMMENDATIONS SERIES Organization of the work of the ITU-T Means of expression General telecommunication statistics General tariff principles Telephone network and ISDN Non-telephone telecommunication services Transmission systems and media Transmission of non-t
5、elephone signals Integrated services digital network Transmission of sound-programme and television signals Protection against interference Construction, installation and protection of cables and other elements of outside plant Maintenance: international transmission systems, telephone circuits, tel
6、egraphy, facsimile and leased circuits Maintenance: international sound-programme and television transmission circuits Specifications of measuring equipment Telephone transmission quality Switching and signalling Telegraph transmission Telegraph services terminal equipment Terminal equipments and pr
7、otocols for telematic services Telegraph switching Data communication over the telephone network Data networks and open system communication Programming languages FOREWORD ITU (Intemational Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The ITU
8、Telecommunication Standardization Sector (IT-T) is a permanent organ of the ITU. Some 179 member countries, 84 telecom operating entities, 145 scientific and industrial organizations and 38 international organizations participate in ITU-T which is the body which sets world telecommunications standar
9、ds (Recommendations). The approval of Recommendations by the Members of ITU-T is covered by the procedure laid down in WTSC Resolution No. 1 (Helsinki, 1993). In addition, the World Telecommunication Standardization Conference (WTSC), which meets every four years, approves Recommendations submitted
10、to it and establishes the study programme for the following period. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with IS0 and IEC. The text of ITU-T Recommendation T.424 was approved on 3rd of July 1996. The i
11、dentical text is also published as ISOAEC International Standard 8613-14. NOTE In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. O ITU 1997 All rights reserved. No part of this public
12、ation may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the IT. ITU-T Rec. T.424 (1996 E) 1 - - 1 2 3 4 5 6 7 8 CONTENTS Scope Normative references . 2.1 Identical Recommendations 1 Internatio
13、nal Standards 2.2 Paired Recommendations 1 International Standards equivalent in technical content 2.3 Additional references Definitions Abbreviations . Conventions . Overview 6.1 Constituents of the document structure . 6.2.1 Document profile attributes for temporal relationships 6.2.2 Document pro
14、file attributes for non-linear structures . 6.3 Document sets . 6.2 Document profile attributes Temporal relationships . 7.1 7.1.1 Synchronization of presentations 7.1.2 Temporal characteristics . Attribute definitions for temporal relationships 7.2.1 Temporal relations 7.2.2 Presentation time . Ref
15、erence model for the layout process with respect to temporal relationships . Reference model for the presentation process with respect to temporal relationships 7.4.1 Reference model for the temporal order of layout objects 7.4.2 Reference model for the processing of the presentation time specificat
16、ions Conceptual principles for temporal relationships . 7.2 7.3 7.4 7.5 ASN . 1 representations Non-linear structures 8.1 8.2 8.3 8.4 8.5 Structural model of a hypermedia document 8.1.1 Nodes 8.1.2 Links . 8.1.3 Link classes . Descriptive representation of a hypermedia document . Attribute definitio
17、ns for links and link classes 8.3.1 Link identifier . 8.3.2 Link class identifier . 8.3.3 Link class 8.3.4 Link roles 8.3.5 Other attributes Attributes ofthe document profile 8.4.1 Entry point 8.4.2 Links . 8.4.3 Link classes . 8.4.4 Enciphered links 8.4.5 Pre-sealed document body parts . Structural
18、 model of a document set . 8.5.1 Nodes 8.5.2 Links . 8.5.3 Link classes . 8.5.4 Document set profile . Page 1 2 2 2 2 2 3 3 3 3 4 4 5 5 5 5 6 6 6 6 8 11 12 12 13 14 15 15 16 16 16 16 17 18 18 19 19 20 21 21 21 21 21 21 22 22 22 22 22 11 ITU-T Rec . T.424 (1996 E) . 8.6 8.7 8.8 8.9 8.10 8.1 1 Documen
19、t set profile attributes . 8.6.1 Entry point 8.6.2 Links . 8.6.3 Link classes . 8.6.4 Enciphered links 8.6.5 Pre-sealed document body parts . 8.6.6 Document set characteristics . 8.6.7 Other attributes 8.6.8 References to documents 8.6.9 Security features Enciphered link part description . Reference
20、 model for the hypermedia document and document set editing process Reference model for the hypermedia document and document set layout process . Reference Model for the hypermedia document and document set presentation process . ASN . 1 representations Document set descriptor Document set profile d
21、escriptor 8.11.3 Link descriptors 8.1 1 . 1 8.1 1.2 Annex A . Structuring conventions for “application comments“ . Annex B - Usage of the attribute/parameter “application comments“ in links . B.l Source role B.2 Destination Role B.3 Single-ended Role . B.4 Multi-ended Role B.5 Automatic Invocation B
22、.6 User Invocation . B.7 Link-Path-Selector Annex C -Modifications to other common texts of ITU-T Rec . T.410-Series I ISOAEC 8613 . c . 1 c.2 c.3 c . 4 Modifications to ITU-T Rec . T.411 I ISOAEC 8613-1 . C . 1.1 Amendment for the assignment of ASN.l object identifiers Modifications to ITU-T Rec .
23、T.412 I ISOAEC 8613-2 . C.2.1 Amendment ofthe structural model C.2.2 Amendment of the processing model C.2.3 Amendment of attribute definitions Modifications to ITU-T Rec . T.414 I ISOAEC 8613-4 . C.3.1 Document profile attributes for temporal relations . C.3.2 Document profile attributes for non-li
24、near structures . Modifications to ITU-T Rec . T.415 ISO/IEC 8613-5 . C.4.1 Amendment of interchange data elements C.4.2 Amendment of the document profile descriptor . C.4.3 Amendment of layout descriptors . C.4.4 Amendment of logical descriptors Annex D . Examples for specifying temporal relationsh
25、ips . Annex E . Compatibility with earlier editions of ITU-T Rec . T.410-Series I ISOAEC 8613 . Annex F . Summary of ASN.l object identifiers . Annex G . Application class tag assignments . Index . Page 22 24 24 24 24 24 24 25 26 26 26 26 27 27 27 27 28 28 30 31 31 31 31 32 32 32 32 33 33 33 33 33 3
26、3 33 33 33 33 34 34 34 35 35 36 48 49 50 51 ITU-T Rec . T.424 (1996 E) . 111 STD*ITU-T RECMN TsLiZLi-ENGL L77b D 48b257L Ob22LB8 Li62 Summary This Recommendation I International Standard is one of two (Recommendations T.422 and T.424) which are designed to support the interchange of processable and
27、formatted hypermedia documents (HyperODA). The non-linear structures are required to enable an ODA document to be traversed in a non-linear fashion. It also supports the use of a temporal dimension in ODA documents as well as future non-spatially oriented content architectures Introduction This Reco
28、mmendation I International Standard was prepared as a joint publication by IT Study Group 8 and ISOIEC Joint Technical Committee 1. At present, the IT-T Rec. T.410-Series I ISOAEC 8613 consists of: - Introduction and general principles; - Document structures; - - Document profile; - Open document in
29、terchange format; - Character content architectures; - Raster graphics content architectures; - Geometric graphics content architectures; - Audio content architectures; - Abstract interface for the manipulation of ODA documents; Formal Specification of the Open Document Architecture (FODA); (The for
30、mal specification is applicable to ISOIEC 8613 only.) - Tabular structures and tabular layout; - Identification of document fragments. Further Recommendations 1 International Standards may be added to this series of Recommendations I International Standards. Development of this senes of Recommendati
31、ons I International Standards was originally in parallel with the ECMA- 1 O 1 standard: Open Document Architecture. This Recommendation I Intemational Standard contains seven annexes: - - - - - - - Annex A (integral): Structuring conventions for “application comments“; Annex B (integral): Usage of t
32、he attribute/parameter “application comments“ in links; Annex C (integral): Modifications to other parts of IT-T Rec. T.410-Series I ISO/IEC 8613; Annex D (non-integral): Examples for speciing temporal relationships; Annex E (non-integral): Compatibility with earlier editions of ITU-T Rec. T.410-Ser
33、ies I ISOLEC 8613; Annex F (non-inegral): Summary of ASN.l object identifiers; Annex G (non-integral): Application class tag assignments. iv ITU-T Rec. T.424 (1996 E) STD.ITU-T RECMN T.-424-EN to allow processing such as editing and reformatting. The composition of a document in interchange can take
34、 several forms: formatted form, allowing presentation of the document; processable form, allowing processing of the document; formatted processable form, allowing both presentation and processing. - - - These Recommendations I Intemational Standards also provide for the interchange of ODA informatio
35、n structures used for the processing of interchanged documents. This Recommendation I Intemational Standard: - - extends the concepts of ODA beyond sheets of paper; describes how to specifj temporal relationships for the presentation of information in ODA documents such as sequential, parallel or cy
36、clic presentation of particular pieces of information; specifies a reference model for the layout process and presentation process in respect to temporal relationships; introduces the concepts of hypermedia documents where non-linear links between presentable content are provided; describes how to s
37、pecify non-linear structures in an ODA document such as links between particular pieces of information as commonly found in so-called hypermedia documents; introduces the concept of document sets; defines a document set profile for document sets; defines a reference model for the layout process and
38、presentation process of hypermedia documents and document sets . - - - - - - ITU-T Rec. T.424 (1996 E) 1 STD-ITU-T RECMN T*iZq-ENGL 177b YBb257L Ob22170 CltO ISODEC 8613-14 : 1997 (E) 2 Normative references The following Recommendations and Intemational Standards contain provisions which, through re
39、ference in this text, constitute provisions of this Recommendation I Intemational Standard. At the time of publication, the editions indicated were valid. All Recommendations and Standards are subject to revision, and parties to agreements based on this Recommendation I International Standard are en
40、couraged to investigate the possibility of applying the most recent edition of the Recommendations and International Standards listed below. Members of IEC and IS0 maintain registers of currently valid International Standards. The Telecommunication Standardization Bureau of the IT maintains a list o
41、f currently valid ITU-T Recommendations. 2.1 Identical Recommendations 1 International Standards - IT-T Recommendation T.411 (1993) I ISOAEC 8613-1:1994, Information technology - Open Document Architecture (ODA) and interchange format: Introduction and general principles. IT-T Recommendation T.412 (
42、1993) 1 ISOAEC 8613-2:1995, Information technology - Open Document Architecture (ODA) and interchange format: Document structures. IT-T Recommendation T.413 1 ISO/iEC 8613-3:1995, Information technology - Open Document Architecture (ODA) andihterchange format: Abstract intedace for the manipulation
43、of ODA documents. IT-T Recommendation T.414 (1993) I ISOiEC 8613-4: 1994, Information technology - Open Document Architecture (ODA) and interchange format: Document profile. ITlJ-T Recommendation T.415 (1993) I ISODEC 8613-5: 1994, Information technology - Open Document Architecture (ODA) and interc
44、hange format: Open Document Interchange Format. - - - - IT-T Recommendation T.416 (1993) 1 ISOAEC 8613-6: 1994, Information technology - Open Document Architecture (ODA) and interchange format: Character content architectures. ITU-T Recommendation T.417 (1993) 1 ISO/IEC 8613-7:1994, Information tech
45、nology - Open Document Architecture (ODA) and interchange format: Raster graphics content architectures. ITU-T Recommendation T.418 (1993) I ISOAEC 8613-8:1994, Information technology - Open Document Architecture (ODA) and interchange format: Geometric graphics content architectures. ITU-T Recommend
46、ation T.419 (1995) I ISO/IEC 8613-9:1996, Information technology - Open Document Architecture (ODA) and interchange format: Audio content architeciures. ITU-T Recommendation T.421 (1994) 1 ISOAEC 8613-1 1:1995, Information technology - Open Document Architecture (ODA) and interchange format: Tabular
47、 structures and tabular layout. ITU-T Recommendation T.422 (1995) 1 ISO/IEC 8613-12:1996, Information technology - Open Document Architecture (ODA) and interchange format: Identifcation of document fragments. 2.2 Paired Recommendations 1 International Standards equivalent in technical content - CCIT
48、T Recommendation X.208 (1988), Specification ofAbstract Syntax Notation One (ASN. I). ISO/IEC 8824: 1990, Information technology - Open Systems Interconnection - Specification of Abstract Syntax Notation One (ASN.1). 2.3 Additional references - - - ISO/IEC 2022: 1994, Information technology - Charac
49、ier code structure and extension techniques. IS0 2375:1985, Data processing - Procedure for registration of escape sequences. IS0 8601:1988, Daia elements and interchange formats - Information interchange - Representation of dates and times. 3 Definitions For the purposes of this Recommendation I International Standard, the definitions given in IT-T Rec. T.411 I lSO/IEC 8613-1 apply, except those redefined here. 2 ITU-T Rec. T.424 (1996 E) STD.ITU-T RECMN T-424-ENGL L97b I8b257L Ilb22L7i T57 ISOIIEC 8613-14 : 1997 (E) The following additional definitions are used with
