SMPTE ST 359M-2001 Television and Motion Pictures - Dynamic Documents.pdf
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1、SMPTE STANDARD SMPTE 359M-2001 for Television and Motion Pictures - Dynamic Documents 1 Scope 1.1 There is a need in the field of information technology for the unambiguous identification of objects to provide interoperability among infor- mation systems. Individual standards committees have divined
2、, as part of their development of technical standards, classes of objects. Specific objects are the individual members of the class of objects. Registration is the process whereby unambiguous names are formally associated with objects. This may be done by an organiza- tion, a standard, or an automat
3、ed facility. 1.2 Within the television and motion-picture industries, there is a need for engineering docu- ments (standards, recommended practices, and engineering guidelines) which can easily and rapidly be extended to cover new requirements (dynamic documents). Such documents typically contain ta
4、bles of values, parameters, or other entities that cannot be fully defined at the time the document is written. 1.3 Through a process described in this standard, the dynamic tables described above are estab- lished as registers to be administered by the SMPTE Registration Authority (SMPTE RA). 1.4 D
5、ynamic documents are created using the same administrative practices as conventional SMPTE documents. Once a dynamic document is adopted as an engineering document, only designated entities within a dynamic document are subject to change by the dynamic document process. As with conventional engineer
6、ing docu- ments, the base document can be modified, but only in accordance with existing administrative practices. Page 1 of 14 pages 1.5 Four types of registers are defined. These types differ in their procedures for adding or modifying the data contained within the registers. 1.6 In this standard,
7、 shall denotes a mandatory provision of the standard, should denotes a pro- vision that is recommended but not mandatory, and may denotes a provision that is optional. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of th
8、is standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of the standards indicated below. ISOAEC JTC 1 Directi
9、ves, Procedures for the Tech- nical Work of ISOAEC JTC 1 on Information Tech- nology, Third Edition, 1995 Society of Motion Picture and Television Engineers Administrative Practices, Section XIII, Engineering 3 Definitions 3.1 data: A representation of facts, concepts, or instructions in a formalize
10、d manner, suitable for communication, interpretation, or processing by humans or automatic means. 3.2 dataelement: A unit of data for which the definition, identification, representation, and permissible values are specified by means of a set of attributes. - Copyright O 2001 by ME SOCIITY OF MOTION
11、 PICTURE AND TELEVISION ENGINEERS 595 W. Hartedale Ave., white Plains, NY 10607 (914) 761-1100 Approved April 2,2001 SMPTE 359M-2001 33 engineering document: A SMPTE standard, recommended practice, or engineering guide- line, or equivalent document from another organization. 3.4 register: A set of f
12、iles (paper, electronic, or a combination) containing the assigned data elements and the associated information. (Defi- nition adapted after that in annex E of the ISO/I EC Directives.) 3.5 registered data element: A data e I em e n t that has been entered into a register kept by a registration auth
13、ority. 3.6 registration authority (RA): T h e o r g an i z a- tion established by the SMPTE Registration Authority, LLC which is authorized to register data elements. 3.7 regisnation authority board (RA Board): The registration authority board consists of the board of directors of the SMPTE Registra
14、tion Author- ity, LLC. 4 Types of data elements 4.1 Type Dynamic documents shall specrty the type to which each registered data element within that document belongs, together with the information that must be supplied with each request for registration. The Standards Committee shall specify which te
15、chnology committee or other body is charged with reviewing the request. 4.2 Dataset An engineering document establishing a dynamic document shall specify an original set of data to be entered into the register once the engineering docu- ment has been approved. 4.3 Extension or change Portions of the
16、 dynamic document that are subject to extension or change shall be clearly labeled as such, and shall be classified according to type as defined below. Assignment of registered data element type shall be subject to ballot and approval per applicable SMPTE administrative practices as is the rest of t
17、he document. 4.4 Maintenance An engineering document establishing a dynamic document shall speciy the RA responsible for mainte- nance and upkeep of any registered data elements specified in the engineering document. The engineer- ing document may also specify locations where registers and registere
18、d data elements may be found in electronic form. Table 1 outlines the difference among registered data element types. Table 1 - Characteristics of registered data element types Page 2 of 14 pages SMPTE 359M-2001 4.5 Type 1 registers Additions to atype 1 register shall be subject to review for techni
19、cal mer, adequacy of information provided, nonconflict with existing engineering documents, and compliance with type 1 requirements. Additions to a type 1 register shall require an underlying engineering document to support any addition (see figure 1). Example: If a document is extended to include a
20、 new type of ancillary data, at least a first drat of a SMPTE engineering document must exist describing the new ancillary data. 4.5.1 Information required for additions to type 1 registers The following information shall be provided by any organization, individual, or committee wishing to make addi
21、tions to a type 1 register: 1) Contact information for the organization, individ- ual, or committee requesting the addition; 2) The supporting engineering document used as the basis for the submission; 3) A request specifying the addition to the register; 4) Identification of the specific register t
22、o which the addition is to be made; 5) Detailed information regarding the purpose and use of the addition to the register; 6) Name of authorized representative of the organi- zation requesting the addition. 4.6 Type 2 registers Additions to a type 2 register shall be subject to review for adequacy o
23、f information, including technical description, nonconflict with existing engineering documents, and compliance with type 2 requirements. Additions to a type 2 register shall not be subject to review for technical merit. Additions to atype 2 register shall not require a supporting SMPTE engineering
24、document (see figure 2). During the ballot process for a change in a type 2 registered data element, negative votes based upon procedural issues, including adequacy of technical description, shall be accepted. Negative votes based upon technical merit shall not be considered. Exam- ple: The addition
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