本标准描述了单向超文本传输协议（UHTTP）。UHTTP是一种单向数据传输协议，旨在单向广播环境中传输资源数据。该传输协议适用于通过电视垂直消隐间隔（IP/VBI）和其他单向传输系统使用IP多播传送HTML和其他内容资源。

This standard describes the unidirectional hypertext transfer protocol, or UHTTP. UHTTP is a one-way data transfer protocol that is designed to deliver resource data in a one-way broadcast-only environment. This transfer protocol is appropriate for delivery of HTML and other content resources using IP multicast over television vertical blanking interval (IP/VBI) and other unidirectional transport systems.