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    • 3. 发明授权
    • Rotation control device, method thereof, program thereof, recording medium storing the program, and information processing apparatus
    • 旋转控制装置及其方法,程序,存储程序的记录介质和信息处理装置
    • US07286453B2
    • 2007-10-23
    • US10833346
    • 2004-04-28
    • Yasutaka SuzukiKazunori Matsuo
    • Yasutaka SuzukiKazunori Matsuo
    • G11B15/00
    • G11B7/0953G11B19/28G11B33/144
    • A temperature sensor (131) detects a temperature of a spindle motor (121) of a rotary drive unit (120) for rotating a disk-shaped recording medium (1), and a temperature information acquiring unit (134A) acquires the temperatures as temperature information. An eccentricity detector (132) detects a drive voltage level, and an eccentricity information acquiring unit (134B) acquires the drive voltage level as eccentricity information. When a determining unit (134C) determines that the temperature is higher than a predetermined temperature or that the drive voltage level is higher than a predetermined voltage, a servo controller (133) switches a rotation mode from constant liner velocity to constant angular velocity. That enables stable information processing over a long time with a simple strucure for constant linear velocity.
    • 温度传感器(131)检测用于旋转盘形记录介质(1)的旋转驱动单元(120)的主轴电动机(121)的温度,温度信息获取单元(134A)获取温度为 温度信息。 偏心检测器(132)检测驱动电压电平,并且偏心信息获取单元(134B)获取作为偏心信息的驱动电压电平。 当确定单元(134C)确定温度高于预定温度或者驱动电压电平高于预定电压时,伺服控制器(133)将旋转模式从恒定衬垫速度切换到恒定角速度。 这可以通过简单的结构实现长时间的稳定信息处理,实现恒定的线速度。