信息技术.用户需求和能力、系统及其环境的通用访问轮廓(CAP)的详细说明框架

[中文适用范围]： 该国际标准定义了一个框架，用于指定用户、计算系统及其环境的需求和能力的通用访问配置文件（CAP），包括辅助技术支持的访问。 它为跨多个平台以标准化方式识别和处理可访问性问题提供了基础。 它可用于评估特定用户在特定环境中现有系统的可访问性。 [外文原描述]： ISO/IEC 24756:2009 defines a framework for specifying a common access profile (CAP) of needs and capabilities of users, computing systems, and their environments, including access supported by assistive technologies. It provides a basis for identifying and dealing with accessibility issues in a standardized manner across multiple platforms. It can be used to evaluate the accessibility of existing systems in particular environments for particular users. Users of various systems in various environments can experience temporary or permanent accessibility difficulties. Potential users of systems need to evaluate whether the systems will be accessible to them in the intended environments in which they will be used. Where accessibility can be insufficient, either due to environmental barriers or poor design, these users can wish to resort to assistive technologies (ATs) to provide the required level of accessibility. Currently, there is no common framework for describing accessibility needs or abilities. This requires each potential user to develop their own evaluation method, and then to investigate and evaluate various systems and ATs using this method. However, due to the lack of an existing method, there might also be a lack of suitable information on the abilities of different systems and ATs, leading to inefficiency, confusion, frustration and a general lack of satisfaction by the user. ISO/IEC 24756:2009 introduces a model of accessibility as a basis for understanding access issues with the interactions between users and systems in various environments. It further describes logical operators used along CAPs to qualify and combine them. It then specifies methods to apply a CAP.