随着社会经济的发展,人们对物质文化生活的需要不断提高,作为现代AV系统设备之一的影碟机(LDP),正以其高画质和高音质而倍受家庭的青睐。影碟机使用的影碟(又称视盘,LD),根据其信号记录格式,可分为常线速(CLV)型和常角速(CAV)型两种。CLV型影碟(又称长时间播放影碟)从内圈至外圈,轨道的长度始终保持恒定,因而激光头在 With the development of society and economy, people’s needs for material and cultural life are constantly increasing. The LDP, one of the modern AV system devices, is favored by families with its high quality and high sound quality. DVD players used video discs (also known as video disc, LD), according to their signal recording format, can be divided into two types of constant linear velocity (CLV) and constant angular velocity (CAV) type. CLV-type video discs (also known as long-term play discs) from the inner ring to the outer ring, the track length remains constant, so the laser head in the