ISO-13522-1-1997.pdf
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1、INTERNATIONAL STANDARD ISO/IEC 13522-I First edition 1997-05-I 5 Information technology - Coding of multimedia and hypermedia information - Part 1: MHEG object representation - Base notation (ASN.l) Technologies de /information - Codage de /information multimkdia et hypermedia - Partie I: Repr these
2、 applications are highly interactive. - Sales and advertising: The association of attractive audiovisuals, showing the products to best advantage, with the stock control and ordering process is a natural commercial evolution. - Office information systems, engineering documentation: There is a long-s
3、tanding need to be able to integrate drawings, images, audio and video into all types of office documentation. Integrated documents would also provide an attractive means of internal enterprise communication. - Culture: The computer processing of audiovisual information makes it possible to extend t
4、he audience for theatres, museums and cultural events. It also opens the possibility of new art forms. - Electronic publishing and electronic books: Much material that is currently published on paper could be enhanced by the integration of audiovisuals and by being available in a hypertext manner ov
5、er a telecommunication network, for example, tourist guides and yellow pages, which could be a mixed sales and advertising application. - Public information: The use of audiovisual interfaces makes it possible for the public to use computer-based, real-time information systems, for example, a kiosk
6、at which information is accessed through videotex or locally from CD. - Computer-supported multimedia co-operative work: There is a need to form effective teams of people who are geographically separated but have to share text, graphics, image, audio and other information, for example for remote mai
7、ntenance, joint authorship or multimedia electronic mail. - Medical applications: There is a need for a timely retrieval of audiovisual information, including medical images, medical data and case history, in an integrated way from a remote site. This could be a mixed co- operative work application
8、with different medical experts. - Interactive television applications: The emergence of digital television systems on terrestrial, satellite or cable networks, as well as the availability of new modulation and transmission techniques on the telephone network, creates favourable conditions for a new
9、offer of interactive multimedia services based on the merging of television and telematics technologies, providing the users with interactive access to video documents. xli Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/11111110
10、01, User=Wing, Bernie Not for Resale, 04/02/2007 21:06:47 MDTNo reproduction or networking permitted without license from IHS -,-,- ISOAEC 13522-1:1997(E) 0 ISOAEC - New classes of applications: The widespread availability of remote access to audiovisual data processing systems open the way to new c
11、lasses of applications such as interactive television, customised news programmes and archive materials. In the following paragraphs, the specific needs of communicating multimedia/hypermedia applications from these domains are examined, leading to a list of application requirements. This set of req
12、uirements constitutes the global framework of this part of ISOAEC 13522. 0.2 Multimedia/Hypermedia application requirements In the various domains presented above, interactive multimedia systems are perceived to have increased impact on users through their use of image, video and audio, in addition
13、to traditional text information. The development of these systems is based upon support for multimedia information in the following areas: - Platforms: Emerging compression standards, such as JPEG (ISOAEC 10918) or MPEG (ISOAEC 11172, ISOAEC 13818), have enabled the development of dedicated hardware
14、, which will soon be provided as a standard system resource. - Storage: The increasing capacity of magnetic and optical disks, combined with compression techniques, enables the storage of increasing amounts of high bandwidth information. - Communication: The increasing availability and bandwidth of
15、digital transmission media, such as ISDN and other broadband telecommunication and broadcasting networks, enables the appropriate exchange of large amounts of data. Using these facilities, multimedia applications are anticipated to be designed to run on heterogeneous platforms and to be interconnect
16、ed to offer multimedia services. These multimedia applications and services will use large quantities of structured multimedia objects resident in workstations, stored on digital interchange media and retrieved or distributed from remote sources through networks. These multimedia data will represent
17、 a significant investment and it is vital that the information should be applicable in a world of rapidly evolving systems and technologies. In particular, it is important that information should be interchangeable between the data structures supported by different applications. The following applic
18、ation requirements can be identified: a) multimedia database retrieval; b) frequent updates of multimedia data; c) manipulation of a set of data elements; d) creation of multimedia documents on a range of workstations; e) composition of multimedia data in time and space; f) ability to link part of a
19、 document with some other part of the same or another document in an open hyperdocument environment; g) synchronisation: 1) elementary synchronisation: two objects are synchronised with regard to the same reference origin time (parallel mode) or one with regard to the other (sequential mode); 2) cha
20、ined synchronisation: a set of objects are presented one after another in the form of a chain; 3) cyclic synchronisation: one or more objects are repetitively presented; 4) conditional synchronisation: the presentation of an object is linked to the fulfilment of a condition; h) reuse of multimedia d
21、ata by integration in different documents; xlii Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/02/2007 21:06:47 MDTNo reproduction or networking permitted without license from IHS
22、 -,-,- 0 ISOAEC ISO/IEC 13522-1:1997(E) i) exchange of multimedia data between heterogeneous systems; j) space wide range of users, including closed user groups; k) real-time interactivity, including acquisition of multimedia data; I) telecommunication of multimedia data; m) broadcast of multimedia
23、data; n) wide range of data volumes and transfer rates; 0) access control, security; p) tariffing; q) copyright, licensing; r) wide range of support materials; s) use of a wide range of terminals and workstations, including devices with minimal resources; t) minimal resources: facilities that the in
24、terchange form must provide in order for a given set of objects, running in limited resources environments, to meet their functional specification as determined by the designer: 1) ease of specification: for specifying the minimum recommended resources needed by an MHEG application; 2) ease of appli
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- ISO 13522 1997
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