1.There are two softwares contained in the disk (an electric dictionary and a videoplayer), actually they are not of too much use.
光盘上有两个软件（一个词典，一个播放器），也没有多大用处。
2.The Usual Analog Filter and Its Application in Laser Videoplayer
常用模拟滤波器及其在激光视盘机中的应用
3.To control a videoplayer with a serial interface
用计算机串口控制录像机