Tracking error signal with DPD method exhibit analyzed better performance than push-pull method against disc radial tilt under the same disc parameters.

• 在相同的盘片参量情况下,差动相位检测方法获得循迹误差比推挽方法受盘片径向倾斜的影响更小,在读取过程中差动相位检测方法可以获得更好的伺服精度。