公开(公告)号：EP1439529A2

公开(公告)日：2004-07-21

申请号：EP03257188.7

申请日：2003-11-14

申请人： Mitsumi Electric Co., Ltd.

发明人： Furukawa, Kenichi, Mitsumi Electric Co., Ltd. ,  Maekawa, Yuichi, Mitsumi Electric Co., Ltd.

IPC分类号： G11B7/005 ,  G11B19/18

CPC分类号： G11B7/00375 ,  G11B7/005 ,  G11B19/04 ,  G11B19/26 ,  G11B20/10009

摘要： According to an aspect of this invention the optical disc drive comprises an arrangement for preliminarily moving the optical pickup unit to a predetermined position of the optical disc before carrying out reading/writing of data for the optical disc, a measuring arrangement for measuring a peak level of an HF signal obtained by the optical pickup unit with a rotation speed of the optical disc changed, an arrangement for using, as a reference level, the peak level of the HF signal obtained by the optical pickup unit on rotating the optical disc at a low rotation speed without effect on stress, an estimating arrangement for estimating an amount of double refraction of the optical disc using the reference level and a peak level of the HF signal measured on rotating the optical disc at a desired rotation speed, and a reducing arrangement for reducing the rotation speed of the optical disc by determining the influence of the double refraction of the optical disc caused by the stress occurring by rotation of the optical disc when the estimated amount of double refraction is not less than a predetermined amount of double refraction.

摘要翻译： 根据本发明的一个方面，光盘驱动器包括用于在执行光盘的数据的读取/写入之前将光学拾取单元预先移动到光盘的预定位置的装置，用于测量峰值水平的测量装置 由光学拾取单元获得的具有光盘旋转速度的HF信号改变的装置，用于将光学拾取单元获得的HF信号的峰值电平用作基准电平， 低旋转速度而不影响应力，用于使用参考电平估计光盘的双折射量的估计装置以及以期望的转速旋转光盘时测量的HF信号的峰值电平，以及减少装置 用于通过确定由应力产生的光盘的双折射的影响来降低光盘的旋转速度 当估计的双折射量不小于预定量的双折射时，通过旋转光盘。

公开(公告)号：EP0809844B1

公开(公告)日：2000-01-05

申请号：EP95938193.0

申请日：1995-10-10

申请人： IOMEGA CORPORATION

发明人： THAYNE, Mark, S. ,  NICKLOS, Carl, F.

IPC分类号： G11B17/04 ,  G11B19/18

CPC分类号： G11B17/043 ,  G11B17/0402 ,  G11B19/18 ,  G11B23/0321 ,  G11B25/043 ,  G11B33/02

摘要： A data storage device (40) for receiving a removable disk cartridge (10) comprises first and second members (70, 72) movably mounted in the data storage device. Each movable member is adapted to perform a respective function within the disk drive. A first spring (90) is coupled to the first movable member (70) for biasing the first movable member in a first direction, and a second spring (92) is coupled to the second movable member (72) for biasing the second movable member in the same direction. A single electro-mechanical device (74) has a drive shaft (76) that engages the first and second movable members at different positions during its travel from an extended position to a retracted position. By applying different currents to the electro-mechanical device (74), the first and second movable members can be operated independently. The data storage device therefore can achieve two functions using only a single electro-mechanical device.

公开(公告)号：EP0809844A4

公开(公告)日：1997-12-03

申请号：EP95938193

申请日：1995-10-10

IPC分类号： G11B17/04 ,  G11B19/18 ,  G11B21/02 ,  G11B21/22 ,  G11B23/03 ,  G11B25/04 ,  G11B33/02

CPC分类号： G11B17/043 ,  G11B17/0402 ,  G11B19/18 ,  G11B23/0321 ,  G11B25/043 ,  G11B33/02

摘要： A data storage device (40) for receiving a removable disk cartridge (10) comprises first and second members (70, 72) movably mounted in the data storage device. Each movable member is adapted to perform a respective function within the disk drive. A first spring (90) is coupled to the first movable member (70) for biasing the first movable member in a first direction, and a second spring (92) is coupled to the second movable member (72) for biasing the second movable member in the same direction. A single electro-mechanical device (74) has a drive shaft (76) that engages the first and second movable members at different positions during its travel from an extended position to a retracted position. By applying different currents to the electro-mechanical device (74), the first and second movable members can be operated independently. The data storage device therefore can achieve two functions using only a single electro-mechanical device.

摘要翻译： 用于接收可移动磁盘盒（10）的数据存储装置（40）包括可移动地安装在数据存储装置中的第一和第二构件（70,72）。 每个可移动部件适于在磁盘驱动器内执行相应的功能。 第一弹簧（90）联接到第一活动构件（70）上，用于沿第一方向偏压第一活动构件，第二弹簧（92）联接到第二活动构件（72），用于偏压第二活动构件 在同一个方向。 单个机电装置（74）具有驱动轴（76），该驱动轴在其从延伸位置行进到缩回位置期间在不同位置接合第一和第二可动构件。 通过向机电装置（74）施加不同的电流，第一和第二可移动构件可以独立操作。 数据存储装置因此可以仅使用单个机电装置来实现两个功能。