ISO/IEC 23001-2:2008 PDF

Name: ISO/IEC 23001-2:2008 — Information technology — MPEG systems technologies — Part 2: Fragment request units
SKU: ISO/IEC 23001-2:2008
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Information technology — MPEG systems technologies — Part 2: Fragment request units

Название (английский):

ISO/IEC 23001-2:2008

Information technology — MPEG systems technologies — Part 2: Fragment request units

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 21
Дата публикации:: 21 января 2008 г.
Издание:: ISO/IEC IS 23001 edition 1 version 1
ICS:: 35.040

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Описание (английский):

ISO/IEC 23001-2:2008 specifies the Fragment Request Unit technology. It comprises a syntax and semantics for expressing a request for fragments of XML. It also specifies how such requests can be used in XML based systems such as ISO/IEC 15938-1 and ISO/IEC 23001-1. The technology can be used in resource constrained environments so that only the fragments of XML of interest at a given time need be transmitted to a requesting peer from a responding peer. It can also be used for node-by-node navigation of a remote XML document.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO/IEC 23001-2:2008 defines the Fragment Request Unit (FRU) technology for MPEG systems. The standard specifies a syntax and semantics for expressing requests for fragments of XML, and how those requests are used in XML‑based systems (for example ISO/IEC 15938-1 and ISO/IEC 23001-1). FRUs enable selective retrieval and node‑by‑node navigation of remote XML documents so that only the XML fragments of interest are transmitted-important for resource‑constrained environments such as mobile devices and set‑top boxes.

Key topics and requirements

FRU syntax and semantics: Standardized element structure and attributes that represent navigation and query operations against an XML source document.

Request and response model: Definitions of FRU Request and FRU Response containers, and the roles of FRU processor, FRU response processor, and context processor.

Navigation and Query modes: Support for node‑by‑node and level‑by‑level navigation and for querying (e.g., using XPath expressions) to select fragments.

Fragment semantics: Definition of what constitutes an XML fragment (may not be a complete well‑formed document but conforms to XML content production).

Interoperability rules: How FRUs integrate with systems layers and delivery layers (transport agnostic - examples include SOAP/HTTP and optional binary encoding with BiM).

Response content: Use of Fragment Update Units (FUUs) to deliver returned XML fragments and namespace handling details (e.g., default namespace attributes).

Normative references and schemas: Ties to W3C XML, XML Namespaces, XML Schema, XPath, RFC 3986 (URI), and includes annexes such as a W3C XML Schema for FRUs and guidance for use in ISO/IEC 15938-1.

Applications and who uses it

Developers and architects of MPEG systems, multimedia metadata (MPEG‑7 / ISO/IEC 15938), and MPEG‑B (Binary MPEG format for XML).

Implementers of XML delivery systems for constrained devices (mobile apps, set‑top boxes, embedded systems) who need to minimize bandwidth, storage, and processing by fetching partial XML.

Systems integrating remote XML navigation or XPath queries, where selective retrieval, incremental loading, or node navigation is required.

Vendors building middleware, content delivery platforms, and standards‑compliant tools that support BiM encoding and FRU transport.

Related standards

ISO/IEC 23001-1 (BiM - Binary MPEG format for XML)

ISO/IEC 15938-1 (MPEG‑7 Systems)

W3C XML, XML Namespaces, XML Schema, XPath

IETF RFC 3986 (URI syntax)

Keywords: ISO/IEC 23001-2:2008, Fragment Request Unit, FRU, XML fragments, MPEG systems, BiM, ISO/IEC 15938-1, XPath, resource‑constrained devices, navigation, query.

ISO/IEC 23001-2:2008 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and who uses it

Related standards

Технические детали

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