XML Schema Namespace Segmentation for Coding Efficiency
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Solution Overview
Problem
Existing methods for binary representation of XML-based documents, such as those based on the MPEG-7 standard, face compatibility issues due to unknown schemas at the start of transmission, leading to inefficient coding and decoding processes.
Innovation Solution
A method that generates independent codes for schemas and namespaces, allowing for separate coding and decoding without modifying existing code tables, even when many namespaces are involved, by using separate codes for elements, data types, and SubstitutionGroups, which can be loaded during transmission and reduce the number of bits required for addressing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If codes are generated based on all schemas and namespaces at the start of transmission, then complete coding coverage is achieved, but compatibility issues arise when schemas are unknown and code table regeneration is required
Solution Approach 1:
The patent divides the code space into separate namespaces, each with its own independent code table. This segmentation allows each namespace to be coded independently without requiring knowledge of other namespaces, eliminating the need for complete schema knowledge at transmission start and avoiding code table regeneration while maintaining coding compatibility.
2Measurement precision
If all schemas and namespaces are processed together, then comprehensive validation is achieved, but the number of bits required for addressing increases
Solution Approach 1:
By segmenting the code space into separate namespaces with independent code tables, each namespace requires fewer addressing bits compared to a unified code table. This segmentation maintains validation accuracy within each namespace while significantly reducing the total bit usage efficiency, especially when dealing with large or numerous namespaces.
3Reliability
If code tables are regenerated when schemas change, then up-to-date coding is achieved, but transmission efficiency decreases due to modifications
Solution Approach 1:
The patent creates independent code tables for each namespace, allowing schemas within a namespace to evolve without affecting other namespaces. This segmentation enables localized schema updates without requiring global code table regeneration, maintaining schema conformance while preserving transmission efficiency by avoiding unnecessary modifications to the entire code structure.
Solution Approach 2:
The patent enables dynamic schema evolution within each namespace independently. Schemas can be added, modified, or removed in one namespace without triggering changes in other namespaces, allowing the system to adapt to changing requirements while maintaining stable, efficient transmission of existing namespaces.
Data Source
AI summary
The invention present disclosure relates to a method and device for coding a structured document, particularly such as a XML-based document, wherein a plurality of codes are generated by one or more schemas or namespaces, wherein independent codes are assigned for a schema and/or a namespace separately from other schemas and namespaces, for the elements defined or declared in the schemas or namespaces or in groups of schemas or namespaces.