电视上看1080i/30就是一次扫描540线经过两次叠加，每秒刷新个60次（即场频60Hz），就重现了30帧
原理和播放480i /576i一样
现在游戏多半原始画面只有720P
早先比较矬的那种HDTV只支持到720P和1080I，并没有支持到1080P，所以条件不够的话PS3也只能选那啥。。。
另外
What happens when you feed a 1080i signal to a 1080p TV?
It's converted to 1080p with no resolution conversion. Instead, the 1080i signal is "de-interlaced" for display in 1080p. Some HDTVs do a better job of this de-interlacing process than others, but usually the artifacts caused by improper de-interlacing are difficult for most viewers to spot.
