Tray control method of tray type data regenerator and said data regenerator

The present invention relates to tray control method of tray type data regenerator. The data regenerator includes at least one motor to drive the tray. The tray control method includes the following steps: to set one detection circuit connected electrically to the motor to detect the back electromotive force the motor generates in rotating caused by outer force; for the detection circuit to output one tray moving signal; for a servo controller to receive the tray moving signal; and for the servo controller to shift the tray into the data regenerator. 本发明涉及一种拖盘式资料再生装置的拖盘控制方法，其中该资料再生装置至少包括一个用以带动该拖盘的马达，该拖盘控制方法包括下列步骤：设置一个电气性连接该马达的侦侧电路，其中该侦侧电路用以侦侧出当该带动拖盘的马达因为外力而旋转所产生的反电动势电压；当该反电动势电压被侦侧到后，该侦侧电路输出一拖盘移动讯号。另外，本发明方法进一步包括一伺服控制器接收该拖盘移动讯号的步骤。另外，本发明方法进一步包括当该伺服控制器完成接收该拖盘移动讯号后，该伺服控制器使得该拖盘移动至该资料再生装置内部。