Overview
ISO/IEC 23001-1:2006/Amd 2:2008 is an international amendment published by ISO and IEC, extending the MPEG systems technologies covered in the core standard (ISO/IEC 23001-1). This amendment specifically addresses the Conservation of prefixes and extensions on encoding of wild cards in the Binary MPEG Format for XML (BiM).
The BiM standard enables efficient binary encoding and interchange of XML documents, essential for applications where bandwidth, processing efficiency, and compatibility are critical. With this amendment, the specification now ensures better handling of XML namespaces, wild card elements, and attribute mapping, supporting more robust multimedia data interchange.
Key Topics
- Conservation of Prefixes: Maintains XML prefix associations throughout encoding and decoding, ensuring correctness of namespace handling in parsed content.
- Wild Card Encoding Extensions: Expands how wild cards are processed in XML to include additional context and namespace information, preserving structure and validity.
- Advanced Decoder Features: Introduces optimized decoding procedures for QName expressions and enhanced event-based SAX decoding, resulting in improved XML document processing.
- Dynamic Dictionaries: Supports dynamic growth of namespaces, elements, and attributes during encoding, allowing adaptation to diverse XML content.
- Compression Techniques: Includes contextual advanced optimized decoders (e.g., Zlib, uniform and non-uniform quantization) to enhance compression and decompression of strings and data.
- Lax Decoding Procedures: Defines efficient handling of wild card elements and attributes using "lax" decoding, beneficial for loosely structured XML data.
- Symbol Table and Event Encoding: Efficient event sequence encoding using a rolling symbol table, enabling compact representation of common XML parsing actions.
- Interoperability Improvements: Revised semantics and index tables align with standards relevant to broadcasting and IPTV requirements.
Applications
The enhancements provided by this amendment have practical value in various domains where efficient XML processing and interoperability are crucial:
- Multimedia Content Delivery: Content providers and platform developers benefit from robust support for XML metadata in audio, video, and interactive services, especially over constrained networks.
- Broadcast and IPTV Systems: The improved namespace and wild card management support advanced electronic program guides, service discovery, and interactive television applications.
- Enterprise Data Interchange: Organizations that rely on structured XML data for business processes (e.g., supply chains, e-commerce) gain from efficient and portable serialization.
- Mobile and Embedded Devices: Compact binary XML encoding reduces resource requirements, making this approach suitable for low-power or bandwidth-limited environments.
- Digital Archives and Libraries: The amendment ensures that structured XML-based metadata can be efficiently stored, indexed, and retrieved across evolving technological platforms.
Related Standards
For implementers and stakeholders, the following related standards provide additional context and extension for the features introduced in this amendment:
- ISO/IEC 23001-1:2006 - Information technology - MPEG systems technologies - Part 1: Binary MPEG format for XML (BiM) [Original Base Standard].
- ISO/IEC 23002-3 - MPEG video technologies supporting advanced coding techniques.
- ETSI TS 102 323/102 529 - Digital Video Broadcasting (DVB) standards for broadcast service guides.
- ETSI TS 102 034, ETSI TS 102 471 - DVB standards supporting IPTV and ESG implementations.
- W3C XML and Namespaces Specifications - Underpinning XML namespace and qualified name conventions referenced in BiM encoding and decoding.
- MPEG-7 and MPEG-21 - Other ISO/IEC standards leveraging XML serialization for multimedia description and management.
By adopting the guidelines of ISO/IEC 23001-1:2006/Amd 2:2008, organizations and developers ensure compatibility, efficiency, and longevity within multimedia systems where effective XML processing and namespace conservation are critical.
Open preview (PDF)Information technology — MPEG systems technologies — Part 1: Binary MPEG format for XML — Amendment 2: Conservation of prefixes and extensions on encoding of wild cards
