ISO/IEC 10646:2020/AMD1:2023
Information technology - Universal coded character set (UCS) - Amendment 1: CJK Unified Ideographs Extension H, Vithkuqi, Old Uyghur, Cypro-Minoan, and other characters
Available Formats:
- Availability: Immediate Download
- Language: English
- License Type: Single User
- Updates: Not Included
- Availability: Request Quote
- Language: English
- License Type: Enterprise / Multi User
- Updates: Included
About This Item
ISO/IEC 10646:2020/AMD1:2023 is an amendment to the Universal Coded Character Set (UCS) reference, adding new characters and script coverage that affect digital text handling, data exchange, and software interoperability. For organizations working with character encoding, document processing, multilingual systems, or conformity assessment, it helps define how newly added symbols and scripts should be represented in a consistent technical environment. As a supporting update to the parent reference, ISO/IEC 10646:2020/AMD1:2023 is relevant when engineering documentation, product evaluation, or technical review depends on accurate Unicode-aligned character support.
Overview of ISO/IEC 10646:2020/AMD1:2023
This amendment updates ISO/IEC 10646:2020 by extending the coded character set with additional character blocks, including CJK Unified Ideographs Extension H, Vithkuqi, Old Uyghur, Cypro-Minoan, and other characters named in the title. In practical terms, it supports technical consistency for systems that store, process, render, validate, or exchange text across platforms. For procurement, engineering documentation, and compliance workflows, ISO/IEC 10646:2020/AMD1:2023 functions as a targeted technical reference connected to the parent document rather than a standalone base specification.
Compliance applications of ISO/IEC 10646:2020/AMD1:2023
Organizations may use this amendment during software verification activities, product evaluation, or documented evaluation of text-handling capabilities in applications, databases, embedded systems, and content platforms. It can be relevant in technical assessment workflows where accurate encoding of newly assigned characters is needed for interoperability, data integrity, or regulatory preparation. Teams involved in quality workflows often rely on the parent reference together with ISO/IEC 10646:2020/AMD1:2023 to confirm that implementation, testing, and acceptance criteria align with current character repertoire requirements.
Importance of compliance with ISO/IEC 10646:2020/AMD1:2023
Using the amendment alongside the parent document helps reduce compatibility issues when systems exchange text containing newly added scripts or ideographs. That can improve testing consistency, support engineering validation, and lower the risk of misrendered or rejected data in operational environments. For procurement and conformity assessment, it provides a clearer compliance reference when evaluating whether a product or platform supports the required character set. In practice, this supports operational consistency, technical compliance, and more reliable implementation planning.
- Extension of the UCS repertoire through Amendment 1 to the parent reference
- Relevant for text encoding, rendering, validation, and data exchange workflows
- Useful in software testing, documentation review, and conformity assessment preparation
- Supports interoperability checks for systems handling newly added scripts and characters
- Publication Date: 2023-07-17
- Standard Status: Amendment
- Publisher: IEC
- Edition: 6
- New Version Available: ISO/IEC 10646 (2025-02-06)
- This Version: ISO/IEC 10646 (2023-07-17)
- Previous Version: ISO/IEC 10646 (2020-12-21)
Please request information about the document. Contact Page
Need This Standard?
Request a personalized quote today to receive the latest edition in PDF or other available formats.
Need This Standard?
Request a personalized quote today to receive the latest edition in PDF or other available formats.
Summarize with AI
Get quick summaries using your favorite AI engine.
Online Standart Disclaimer
OnlineStandart.com is an authorized reseller of international standards, operating through partnerships with authorized distributors. We do not own the copyrights or trademarks of the standards we sell, including but not limited to those of API, ASHRAE, BSI, SAE, ASTM, IEEE, IEC, ASME, ISO, and others.
All product names, logos, and brands are the property of their respective owners and are used for identification purposes only; their use does not imply endorsement. OnlineStandart.com is not affiliated with or endorsed by any standards development organization unless explicitly stated. The content of this document is for informational purposes only and is intended to promote our licensed reselling services.
Online Standart does not host, distribute, or link to free, unlicensed, or uncertified copies of copyrighted standards. Every document we deliver is a licensed copy obtained through authorized channels and supplied with full licensing documentation. The “Free PDF Download” option on our product pages refers to this free informational document — never to a free copy of any standard.