公开(公告)号：US5198933A

公开(公告)日：1993-03-30

申请号：US666166

申请日：1991-03-07

申请人： Hiroshi Matsushita ,  Koichiro Nanke ,  Kouji Takahashi

发明人： Hiroshi Matsushita ,  Koichiro Nanke ,  Kouji Takahashi

IPC分类号： G11B17/04 ,  G11B17/043

CPC分类号： G11B17/0438

摘要： The invention is an information reproduction apparatus provided with supporting means for supporting a recording medium, a drive source for moving the recording medium between the initial insertion position and the reproduction position by driving said supporting means, transmission means for transmitting the driving force of said drive source to said supporting means, retraction means operable to force a transmission element to retract from said transmission means, said transmission element being a part of said transmission means, and motion means operable to force the recording medium to move from the reproduction position to the initial insertion position under the condition that said transmission element is not engaged in said transmission means. In forcibly moving said supporting means, when the drive is out of operation, said supporting means are released from the drive force by means of said retraction means, freeing the supporting means from the resistance force of the drive force.

公开(公告)号：US5267227A

公开(公告)日：1993-11-30

申请号：US776103

申请日：1991-10-15

申请人： Koichiro Nanke

发明人： Koichiro Nanke

IPC分类号： G11B17/04 ,  G11B17/043 ,  G11B21/22 ,  G11B33/08 ,  G11B21/16

CPC分类号： G11B17/0438 ,  G11B21/22 ,  G11B33/08

摘要： Disk storage apparatus includes a loading and unloading mechanism for moving a recording disk from an insertion position to a reproduction position within the apparatus. When the disk is in the reproduction position, a locking mechanism is moved out of contact with an actuator which carries a read/write head so that the head can be moved across the surface of the disk by a motor mounted on the actuator. When an eject command is received, the actuator is moved to an inner crash stop and the disk is moved out of the reproduction position causing the locking mechanism to move into mechanical engagement with the actuator. A magnet carried on the locking means is moved adjacent a magnet within the motor so that the mechanical locking engagement is enhanced magnetically.

摘要翻译： 磁盘存储装置包括用于将记录盘从插入位置移动到装置内的再现位置的装载和卸载机构。 当盘处于再现位置时，锁定机构与携带读/写头的致动器移动离开接触，使得头可以通过安装在致动器上的电动机移动穿过盘的表面。 当接收到弹出命令时，致动器被移动到内部碰撞停止，并且盘被移出再现位置，导致锁定机构移动到与致动器的机械接合。 承载在锁定装置上的磁体与电动机内的磁体相邻地移动，使得机械锁定接合被磁性地增强。

公开(公告)号：US5218585A

公开(公告)日：1993-06-08

申请号：US591157

申请日：1990-10-01

申请人： Henry E. Aviles ,  Edwin R. Childers ,  Tetsuya Kokubo ,  Hiroshi Matsushita ,  David P. McReynolds ,  Koichiro Nanke

发明人： Henry E. Aviles ,  Edwin R. Childers ,  Tetsuya Kokubo ,  Hiroshi Matsushita ,  David P. McReynolds ,  Koichiro Nanke

IPC分类号： G11B7/095 ,  G11B19/20 ,  G11B21/10 ,  G11B33/08 ,  G11B33/12

CPC分类号： G11B33/121 ,  G11B33/08

摘要： The invention is an optical disk drive which controls mechanical feedback to a focus servo actuator by shifting the phase of the feedback along its path back to the servo an additional 180 degrees to eliminate the degradation of the phase margin and prevent servo instability. The phase shift may be induced at any practical location along the feedback path. The phase shift is preferably induced by creating a slit or opening in the base of the optical disk drive. The opening must be positioned properly, shaped appropriately, and large enough to create a new base resonant frequency which prevents the opposite sides thereof from vibrating in phase. Alternatively, the phase shift may be induced by altering other components in the feedback path. For example, the phase shift can be induced by modifying the spindle motor assembly to create a new spindle resonant frequency.

摘要翻译： 本发明是一种光盘驱动器，其通过将反馈的相位沿着其路径移回到伺服附加180度来控制对聚焦伺服致动器的机械反馈，以消除相位裕度的劣化并防止伺服不稳定性。 可以在沿着反馈路径的任何实际位置处诱导相移。 相移优选通过在光盘驱动器的基座中形成狭缝或开口而引起。 开口必须适当地定位，适当地成形，并且足够大，以产生新的基本共振频率，防止其相对侧相位振动。 或者，可以通过改变反馈路径中的其它组件来引起相移。 例如，可以通过修改主轴电机组件以产生新的主轴谐振频率来引起相移。