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VCD影碟机按其装盘结构来分,有单碟、三碟、五碟以及十碟等多种结构形式。此外,VCD机经常与音响设备组合,构成组合音像系统。目前VCD机已成为家庭影院系统中不可缺少的设备。 一、VCD影碟机的基本结构 从大的方面来说,VCD影碟机是由机心和电子线路两部分构成的。机心由光盘装卸机构、光盘驱动机构、激光头及其进给机构等部分构成。电子线路由音频视频信号处理电路、伺服电路、控制电路、操作显示电路以及电源电路等部分构成。 从信号处理系统的角度来说,VCD影碟机是在CD唱机的基础上增加了一套音频、视频解压缩处理电路而成的。
VCD players according to their loading structure to points, there are single disc, three discs, five discs and ten discs and other structures. In addition, VCD machines are often combined with audio equipment to form a combined audiovisual system. At present VCD has become an indispensable home theater system equipment. First, the basic structure of VCD player In large terms, VCD player is composed of two parts of the movement and the electronic circuit. Movement by the CD loading and unloading agencies, CD-ROM drive mechanism, the laser head and its feed mechanism and other components. Electronic circuits by the audio and video signal processing circuit, servo circuit, control circuit, the operation of the display circuit and the power circuit and other components. From the signal processing system point of view, VCD player is based on the CD player adds an audio and video decompression processing circuit made.