摘要
抖晃概述 信息是如何存储到光盘上并从光盘上读取的? CD和DVD光盘分别载有它们各自的信息,是通过 反射光从高电平到较低电平再回到高电平的量的变化实 现的。这种情况造成了光的强度向上升或下降两个方向 的跃变。数字信息存在于所选择的跃变之间的长度,这 种跃变还用来再生带有时钟周期T的信息位时钟。通过 使用位时钟,播放机就能识别被称为符号的3T,4T直 到11T和14T的分立的长度,从而从光盘中读取数据。
This is a white paper that helps us to understand the concept and measurement of Jitter and ISI correctly and thoroughly. For optical disc technology there is the same basic problem, when the symbols become small in comparison with the read out spot size they start to interact. The main purpose for ISI Jitter measurements is to investigate how different symbol combinations affect the jitter to enable optimization of the process in different ways.
出处
《记录媒体技术》
2005年第2期53-56,共4页
China Mediatech
