光驱的转速随着时间的流逝而不断地加快,现在50倍速的光驱已不再是神话了。以前的低倍速光驱多采用“恒线速度”(Constant LinearVelocity,CLV)方式,即在读取光盘内外圈的数据时采用不同转速(也就是角速度不同但线速度相同)的方法。它虽然可以保证在读取数据时有相对稳定的传输率,但是对电机的损耗较大且易老化,造成不易向更高的速度迈进。所以,现在的读取技术已经转为“局部恒角速度”(Partial Constant Optical drive speed with the passage of time and continue to accelerate, and now 50-speed optical drive is no longer a myth. Previous low-speed optical drives mostly used the “Constant Linear Velocity” (CLV) method, which used different rotational speeds (ie, different angular velocities but same linear velocities) when reading the data of inner and outer discs. Although it can guarantee a relatively stable transfer rate when reading data, but the loss of the motor larger and easy to aging, resulting in not easy to move to higher speeds. So now the reading technique has been changed to Partial Constant