公开(公告)号：US06917171B2

公开(公告)日：2005-07-12

申请号：US10664644

申请日：2003-09-17

申请人： Tsai-Hsin Tsai ,  Umi Huang ,  Yu-I Chen

发明人： Tsai-Hsin Tsai ,  Umi Huang ,  Yu-I Chen

IPC分类号： G11B19/20 ,  H02P3/20

CPC分类号： G11B19/20 ,  Y10S388/932

摘要： A control device and a method of stopping the spindle motor or an optical disc system. The control device primarily includes an optical disc control chip, a motor driving circuit and a spindle motor. The optical disc control chip generates and delivers a spindle motor control signal to the motor driving circuit for driving the spindle motor into rotation. During a first period, the spindle motor control signal level is controlled to produce the largest reversing torque permitted by the spindle motor for braking purpose. During a second period, the spindle motor control signal level decreases gradually to approach to a lock level that is smaller than that for actuating the spindle motor, so that the reversing torque is also decreasing gradually. During a third period, the spindle motor control signal at a level between the lock level and a motor stoppage level indicative of the spindle motor remaining stationary is applied to the motor driving circuit so that a locking torque which has the same rotation direction with that for read-/write-operations is derived in the spindle motor. The locking torque is controlled at a level less than that for actuating the spindle motor again. Finally, the spindle motor remains stationary after the third period terminates.

摘要翻译： 一种控制装置和停止主轴电机或光盘系统的方法。 控制装置主要包括光盘控制芯片，马达驱动电路和主轴马达。 光盘控制芯片生成主轴电动机控制信号并将其传送到电动机驱动电路，以驱动主轴电机转动。 在第一阶段期间，主轴电动机控制信号电平被控制以产生用于制动目的的主轴电动机允许的最大反向转矩。 在第二时段期间，主轴电动机控制信号电平逐渐降低，接近小于用于致动主轴电动机的锁定水平，使得反向转矩也逐渐减小。 在第三时间段期间，主动马达控制信号处于锁定水平与表示主轴马达保持静止的马达停止水平之间的水平，被施加到马达驱动电路，使得具有相同旋转方向的锁定转矩与 读/写操作在主轴电机中得出。 锁定扭矩被控制在比再次驱动主轴电机的水平更低的水平。 最后，主轴电机在第三个周期结束后保持静止。