光盘的光道格式及其伺服技术

Optical Track Format & Servo Tech of DVD-RAM

DVD-RAM作为一种大容量,可重写的存储介质,既可以用来保存大量的计算机文件也可以用来记录高质量的音、视频数据。由于其采用了单螺旋摆动平台和凹槽的光道格式,使得读取DVD-RAM光盘需要采用相应的伺服控制技术,通过在DVD控制芯片中增加CAPA检测、Wobble信号检测等电路和相应的功能,就可以在DVD-ROM驱动器和DVD播放机中实现对DVD-RAM光盘的读取。

DVD-RAM is a large storage capacity, rewritable optical disk that can record nuge mounts of data such as computer data as well as AV data.Because of its single-spiral wobbled and and groove format, some servo technology should be taken for reading DVD-RAM disk. By adding CAPA detect and Wobble detect circuit and elated function in DVD controller, reading DVD-RAM disk can be implement in DVD-ROM driver and n DVD player.