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公开(公告)号：US07903515B2
公开(公告)日：2011-03-08
申请号：US12256675
申请日：2008-10-23
IPC分类号： G11B7/00
CPC分类号： G11B7/0945 , G11B7/0956 , G11B7/13925 , G11B2007/0006
摘要： An optical disc drive according to the present invention can read data from any of multiple types of optical discs, of which the information storage layers are located at mutually different depths under their surface. When this drive is loaded with an optical disc, the servo controller of the drive changes a first type of drive signal to adjust a focus position by changing distances from the lens to the disc and/or a second type of drive signal to adjust tilt of the lens by changing the angles defined by the lens with respect to the disc a number of times, thereby changing settings to be determined by a combination of the focus position and the tilt. A signal quality rater measures multiple index values to rate the quality of a reflected light signal as the settings are changed. Then, the optical disc drive recognizes the type of the given optical disc based on those index values and reads data from the optical disc recognized.
摘要翻译： 根据本发明的光盘驱动器可以从多种类型的光盘中的任何一种读取数据，其中信息存储层位于其表面下彼此不同的深度处。 当该驱动器装载有光盘时，驱动器的伺服控制器通过改变从透镜到盘的距离和/或第二类型的驱动信号来改变第一类型的驱动信号以调整对焦位置以调整 通过将透镜相对于盘定义的角度改变多次，从而改变由聚焦位置和倾斜的组合确定的设置。 信号质量评估者测量多个索引值以对设置改变时的反射光信号的质量进行评估。 然后，光盘驱动器基于这些索引值识别给定光盘的类型，并从所识别的光盘读取数据。
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12.发明申请OPTICAL HEAD TRANSFER DEVICE, INTEGRATED CIRCUIT FOR OPTICAL HEAD TRANSFER DEVICE, FOCUSING LENS DRIVING DEVICE, AND INTEGRATED CIRCUIT FOR FOCUSING LENS DRIVING DEVICE 审中-公开光头传输装置，用于光头传输装置的集成电路，聚焦镜头驱动装置和用于聚焦镜头驱动装置的集成电路公开(公告)号：US20090190449A1
公开(公告)日：2009-07-30
申请号：US12302966
申请日：2007-05-25
IPC分类号： G11B7/00
CPC分类号： G11B7/08529 , G11B7/0945 , G11B2007/0006
摘要： When transferring an optical head in a radial direction of an optical disc, the optical head is initially transferred with a speed profile of a larger acceleration, and when abnormality is detected by an abnormality detection circuit which detects abnormality of a focus control system, the optical head is again transferred with a speed profile of a smaller acceleration, whereby preventing a movable part of a lens actuator from colliding with a fixed part when transferring the optical head in the radial direction of the optical disc, resulting in an optical head transfer device, an integrated circuit for the optical head transfer device, a focusing lens driving device, and an integrated circuit for the focusing lens driving device which can avoid an increase in the start-up time of the device, a reduction in the data reading speed from the optical disc, and the like.
摘要翻译： 当在光盘的径向方向上传送光头时，首先以较大的加速度的速度轮廓来传送光头，并且当检测到聚焦控制系统的异常的异常检测电路检测到异常时，光学头 头部再次以较小的加速度的速度轮廓传递，由此当在光盘的径向方向上传送光学头时，防止透镜致动器的可移动部分与固定部分碰撞，导致光学头转印装置， 用于光头转印装置的集成电路，聚焦透镜驱动装置和用于聚焦透镜驱动装置的集成电路，其可以避免装置启动时间的增加，数据读取速度从 光盘等。
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13.发明授权公开(公告)号：US06876606B2
公开(公告)日：2005-04-05
申请号：US09778421
申请日：2001-02-07
CPC分类号： G11B19/28 , G11B7/08505
摘要： A motor controlling device includes an acceleration detector for detecting an acceleration of a motor; a motor driver for supplying a driving current to the motor; a heat quantity calculator for calculating a heat quantity generated in the motor at least based on an output from the acceleration detector; and a motor controller for controlling the motor driver based on the heat quantity.
摘要翻译： 电动机控制装置包括用于检测电动机的加速度的加速度检测器; 用于向马达提供驱动电流的马达驱动器; 热量计算器，用于至少基于来自加速度检测器的输出来计算在电动机中产生的热量; 以及用于基于热量来控制马达驱动器的马达控制器。
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公开(公告)号：US07027368B2
公开(公告)日：2006-04-11
申请号：US10905920
申请日：2005-01-26
IPC分类号： G11B7/00
CPC分类号： G11B19/28 , G11B7/08505
摘要： A motor controlling device includes an acceleration detector for detecting an acceleration of a motor; a motor driver for supplying a driving current to the motor; a heat quantity calculator for calculating a heat quantity generated in the motor at least based on an output from the acceleration detector; and a motor controller for controlling the motor driver based on the heat quantity.
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