LD唱片

名称：LD唱片

产地：日本

年份：20世纪80末

器材简介：

    镭射影碟即电影光盘，光盘记录和存储系统使用的是激光技术，它的原理是在小直径的圆盘表面镀以薄金属膜，用激光束在它上面烧出一串微小的坑，用这种方法存储数字数据。磁带上的信息编码后存在主盘上，然后用模压法复制。读信息时用低强度的激光射到表面，并且用光敏二极管“读”反射出来的光信号(有或没有小坑的地方，光敏二极管接收的光量不同)，通过电路转换成数字信息，然后再转换成模拟信息，显示在屏幕上。

LD唱片（英文版）

Name: LD records

Origin: Japan

Year: twentieth Century 80

Equipment introduction:

    Laser discs are movie discs, disc recording and storage system use laser technology, its principle is plate a thin metal film on the surface of small diameter disk, then burn out a bunch of tiny pits with laser beam, through this method to store digital data. After coding the information, storing it on the main disk, and then copy it with the moulding method. When reading information, beaming low intensity laser radiation on the surface, and use a photosensitive diode to "read" light signal reflected (photosensitive diode receives different light if there are pits), and convert the circuit into digital information,  then converted into analog information and display on the screen.