BD伺服原理及工程分析

BD servo principle and analysis on engineering

光驱的硬件由伺服系统和信号系统两部分组成,前者负责所有硬件动作的控制和调节,为光驱提供一个"稳定"并受控的工作状态;后者负责读写光盘过程中的信号处理,主要是从不同种类的碟片中提取或者记录相关数据。本文将以BD系统为例,着重介绍光驱的伺服技术,并对其在工程中的几个实例做分析。

Optical driver is made of servo system and signal process system.The Servo system controls all of the driver's actions, such as focus,track,seek and etc.Then the signal process system can read data smoothly in the disc.At last,the BD's servo system will be introduced on some engineering aspect.