信息技术 用户界面要求和菜单导航建议 第 3 部分：单向设备导航

[中文适用范围]： 本文件提供了单向设备（使用单开关或双开关设备）菜单项选择导航方法的设计要求和建议。它规定了单向设备菜单导航在时间延迟、循环和焦点渲染方面的要求。本文件适用于显示区域与单向设备相关联的任何信息技术设备。 [外文原描述]： This document provides requirements and recommendations on the design of navigation methods for menu item selection with use on one-direction devices (using single or double-switch devices). It specifies requirements for menu navigation with one-direction devices in terms of time delay, loops and focus rendering. This document is applicable to any information technology equipment on which the display area is associated with the one-direction devices.