ISO TS 18234-2-2013 Intelligent transport systems - Traffic and travel information via transport protocol experts group generation 1 (TPEG1) binary data format .pdf
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1、 Reference number ISO/TS 18234-2:2013(E) ISO 2013TECHNICAL SPECIFICATION ISO/TS 18234-2 Second edition 2013-10-15 Corrected version 2013-11-01Intelligent transport systems Traffic and travel information via transport protocol experts group, generation 1 (TPEG1) binary data format Part 2: Syntax, sem
2、antics and framing structure (TPEG1-SSF) Systmes intelligents de transport Informations sur le trafic et le tourisme via les donnes de format binaire du groupe dexperts du protocole de transport, gnration 1 (TPEG1) Partie 2: Structure de syntaxe, de smantique et de cadrage (TPEG1-SSF) ISO/TS 18234-2
3、:2013(E) COPYRIGHT PROTECTED DOCUMENT ISO 2013 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
4、written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerla
5、nd ii ISO 2013 All rights reservedISO/TS 18234-2:2013(E) ISO 2013 All rights reserved iiiContents Page Foreword . v Introduction . v 1 Scope 1 2 Normative references 1 3 Abbreviated terms . 2 4 Design principles . 3 4.1 TPEG transmission . 3 4.2 TPEG layer model 4 5 Conventions and symbols 6 5.1 Con
6、ventions . 6 5.1.1 Byte ordering . 6 5.1.2 Method of describing the byte-oriented protocol 6 5.1.3 Reserved data fields 6 5.2 Symbols 6 5.2.1 Literal numbers 6 5.2.2 Variable numbers 6 5.2.3 Implicit numbers 7 6 Representation of syntax . 7 6.1 General . 7 6.2 Data type notation . 7 6.2.1 Rules for
7、data type definition representation . 7 6.2.2 Description of data type definition syntax 9 6.3 Application dependent data types . 10 6.3.1 Data structures 11 6.3.2 Using templates as interfaces 12 6.3.3 Components . 13 6.4 Toolkits and external definition . 15 6.5 Application design principles 15 6.
8、5.1 Variable data structures . 15 6.5.2 Re-usable and extendable structures . 15 6.5.3 Validity of declarative structures . 15 7 TPEG data stream description . 16 7.1 Diagrammatic hierarchy representation of frame structure . 16 7.2 Syntactical Representation of the TPEG Stream . 16 7.2.1 TPEG trans
9、port frame structure 16 7.2.2 TPEG service frame template structure 17 7.2.3 Service frame of frame type = 0 . 17 7.2.4 Service frame of frame type = 1 . 17 7.2.5 TPEG service component frame multiplex . 18 7.2.6 Interface to application specific frames 18 7.3 Description of data on Transport level
10、21 7.3.1 Syncword . 21 7.3.2 Field length 21 7.3.3 Header CRC 21 7.3.4 Frame type . 21 7.3.5 Synchronization method. 22 7.3.6 Error detection . 22 7.4 Description of data on Service level 22 ISO/TS 18234-2:2013(E) iv ISO 2013 All rights reserved7.4.1 Encryption indicator 22 7.4.2 Service identificat
11、ion .22 7.5 Description of data on Service component level .23 7.5.1 Service component identifier .23 7.5.2 Field length .23 7.5.3 Service component frame header CRC .23 7.5.4 Service component frame data CRC23 Annex A (normative) Character tables 24 A.1 Character tables .24 A.2 Reference character
12、table index 24 Annex B (normative) Method for coding quantities of objects 25 B.1 Numag derivation .25 B.2 Numag table .26 Annex C (normative) CRC calculation 27 C.1 CRC calculation .27 C.2 ITU-T (formerly CCITT) CRC calculation in PASCAL .27 C.3 ITU-T (formerly CCITT) CRC calculation in C notation
13、28 Annex D (normative) Time calculation 29 D.1 Time calculation .29 D.2 Time calculation in C notation 29 Annex E (informative) A description of the TPEG byte-stream using C-type notation 32 E.1 Explanation .32 E.2 Definition of data elements .32 E.3 Definition of conditional expressions33 E.4 Byte-
14、stream representation of the TPEG hierarchy .33 E.4.1 Definition of nextbyte function .33 E.4.2 Definition of next_start_code function 33 E.4.3 Definition of tpeg_stream function 34 ISO/TS 18234-2:2013(E) ISO 2013 All rights reserved vForeword ISO (the International Organization for Standardization)
15、 is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be repre
16、sented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are
17、 drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Internationa
18、l Standard requires approval by at least 75 % of the member bodies casting a vote. In other circumstances, particularly when there is an urgent market requirement for such documents, a technical committee may decide to publish other types of normative document: an ISO Publicly Available Specificatio
19、n (ISO/PAS) represents an agreement between technical experts in an ISO working group and is accepted for publication if it is approved by more than 50 % of the members of the parent committee casting a vote; an ISO Technical Specification (ISO/TS) represents an agreement between the members of a te
20、chnical committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting a vote. An ISO/PAS or ISO/TS is reviewed after three years in order to decide whether it will be confirmed for a further three years, revised to become an International Standard, or wit
21、hdrawn. If the ISO/PAS or ISO/TS is confirmed, it is reviewed again after a further three years, at which time it must either be transformed into an International Standard or be withdrawn. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent r
22、ights. ISO shall not be held responsible for identifying any or all such patent rights. ISO/TS 18234-2 was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 278, Road transport and traffic telematics, in collaboration with ISO Technical Committee ISO/TC 204, Int
23、elligent transport systems, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). This second edition cancels and replaces the first edition (ISO/TS 18234-2:2006). Clauses 5, 6 and 7 have been technically revised. ISO/TS 18234 consists of the following par
24、ts, under the general title Intelligent transport systems Traffic and travel information via transport protocol experts group, generation 1 (TPEG1) binary data format: Part 1: Introduction, numbering and versions (TPEG1-INV) Part 2: Syntax, semantics and framing structure (TPEG1-SSF) Part 3: Service
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