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2. 发明授权

US07291996B2 Optical disc drive and brake control method thereof 有权
标题翻译：光盘驱动器及其制动控制方法
公开(公告)号：US07291996B2
公开(公告)日：2007-11-06
申请号：US10671752
申请日：2003-09-25
申请人： Yoshiaki Aso , Takashi Tateshima , Tatsuya Goto
发明人： Yoshiaki Aso , Takashi Tateshima , Tatsuya Goto
IPC分类号： H02P3/08 , H02P3/18 , G11B19/22
CPC分类号： G11B19/26 , G11B19/22 , G11B19/28
摘要： An optical disc drive 1 includes a spindle motor 11 for rotating the optical disc 2 and a spindle driver for driving the spindle motor 11 equipped with a rotation number counter 232 for measuring the rotation number of the spindle motor 11. A brake for braking the spindle motor 11 to reduce the rotation number thereof, can include at least three types of brake modes, and a selector for selecting one of the types of brake modes in response to the rotation number measured by the rotation number counter 232 when the rotation number of the spindle motor 11 is to be reduced. The optical disc drive 1 may further include a judging circuit for judging whether the rotation number of spindle motor 11 measured by the rotation number counter 232 reaches a predetermined target rotation number when the rotation of the optical disc 2 is to be stopped by the spindle motor 11. In this case, the application of the brake is completed when the rotation number of the spindle motor 11 reaches the predetermined target rotation number.
摘要翻译：光盘驱动器1包括用于旋转光盘2的主轴电动机11和用于驱动主轴电动机11的主轴驱动器，主轴电动机11配备有用于测量主轴电动机11的转数的转数计数器232。用于制动主轴电动机11以减小其转数的制动器可以包括至少三种类型的制动模式，以及选择器，用于响应于由旋转数计数器232测量的旋转数来选择其中一种制动模式当要减小主轴电动机11的转数时。光盘驱动器1还可以包括判断电路，用于当光盘2的旋转将被主轴电机停止时，判断由转数计数器232测量的主轴电机11的转数是否达到预定的目标转数 11。在这种情况下，当主轴电动机11的转数达到规定的目标转速时，完成制动的施加。

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