Overview
ISO 14739-1:2014 - PRC 10001 specifies the Product Representation Compact (PRC 10001) portion of the PRC file format for three‑dimensional (3D) content data. PRC 10001 is a compact, binary 3D representation designed to be embedded in PDF (ISO 32000) and similar document formats for the purpose of 3D visualization and exchange. The standard is optimized for storing, loading and displaying CAD‑originated 3D data to enable high‑fidelity viewing and accurate shape measurement inside document workflows.
Note: ISO 14739-1:2014 does not cover methods of electronic distribution, the process of converting CAD datasets to PRC, rendering UI/implementation details, or required hardware/OS platforms.
Key topics and technical scope
ISO 14739-1 documents the structure, semantics and technical building blocks of PRC 10001, including:
- PRC file concepts: file header, versioning, unique identifiers, units and tolerances, userdata and current data values.
- File structure and schema: PRC schema tokens, entity types and recommended file organization for embedding in documents.
- Data types and base entities: uncompressed and compressed basic types, abstract root types, structure/assembly, graphics and representation items.
- Geometry and topology: tessellation, topology, curves, surfaces and mathematical operators for representing CAD geometry.
- Compression and I/O algorithms: compressed file sections, compressed geometry/tessellation, Huffman‑based tessellation compression support and detailed I/O procedures (bit packing, variable bit numbers, float/double serialization).
- Examples and annexes: illustrative examples (e.g., triangle tessellation), lists of figures/tables and normative references.
Practical applications and users
ISO 14739-1 is aimed at enabling reliable 3D content in documentation and information exchange. Typical applications:
- Embedding 3D models in technical documents, manuals and specifications (3D PDF).
- Creating compact visualization assets from CAD/PLM systems for review, collaboration and distribution.
- Developing PRC‑aware viewers, exporters and document composition tools that support accurate measurement and interrogation of 3D models.
- Technical publishers, CAD/PLM software vendors, document management teams, and visualization tool developers.
Important: PRC is intended to complement native CAD formats for visualization and documentation; it is not a substitute for ISO 10303 (STEP) or for factory automation/inspection workflows.
Related standards
- ISO 32000 - Portable Document Format (PDF)
- ISO 24517‑1 - PDF engineering document usage (PDF/E‑1)
- ISO 10303 (STEP) - CAD interoperability (different scope)
- IEEE 754 - Floating‑point arithmetic
Keywords: ISO 14739-1:2014, PRC 10001, PRC format, 3D PDF, CAD visualization, tessellation compression, PRC schema, product representation compact.