本标准定义并规定了1920 x 1080、1280 x 720、720 x 576和720 x 480电视格式的安全操作和安全标题区域。本文档旨在应用于程序制作中，其中获取的精华的图像纵横比与显示器的图像纵横比相同。本标准中定义的安全区域不同于以往的实践；它们考虑了图像采集、传输和显示技术的变化。当以一种纵横比生成的材料可能需要以不同的纵横比显示时，它们不提供指导。

This Standard defines and specifies Safe Action and Safe Title Areas for 1920 x 1080, 1280 x 720, 720 x 576 and 720 x 480 television formats. This document is intended for application in program production where the image aspect ratio of the acquired essence is the same as that of the display.The safe areas defined in this Standard differ from past practice; they take into account changes in image acquisition, transmission and display technology. They do not offer guidance in situations where material generated in one aspect ratio may need to be displayed in a different aspect ratio.