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。

公开(公告)号：US5198944A

公开(公告)日：1993-03-30

申请号：US757423

申请日：1991-09-10

申请人： David P. McReynolds ,  Thomas J. Schmitt ,  Syed T. Shafaat ,  Raymond Yardy

发明人： David P. McReynolds ,  Thomas J. Schmitt ,  Syed T. Shafaat ,  Raymond Yardy

IPC分类号： G11B15/675 ,  G11B17/035 ,  G11B17/04 ,  G11B17/043 ,  G11B19/00 ,  G11B25/04

CPC分类号： G11B17/0434 ,  G11B17/035 ,  G11B19/00 ,  G11B25/043

摘要： A recording/playback apparatus in which movable datum pins are held in a base casting. Upon insertion of a cartridge into a holding tray, within the apparatus, the pins are released to move into datum holes in the cartridge when the holes are positioned directly above the pins. The cartridge is then lowered onto the drive spindle and positioned on surfaces of the base casting. During the load cycle, the cartridge is allowed to move relative to the holding tray while continuing to be held in place relative to the base casting by the datum pins.

公开(公告)号：US5097361A

公开(公告)日：1992-03-17

申请号：US636871

申请日：1990-10-19

申请人： Edwin R. Childers ,  Alan A. Fennema ,  David P. McReynolds

发明人： Edwin R. Childers ,  Alan A. Fennema ,  David P. McReynolds

IPC分类号： G11B5/596 ,  G11B7/08 ,  G11B7/09 ,  G11B21/00 ,  G11B33/08

CPC分类号： G11B21/003 ,  G11B7/093

摘要： An optical disk recorder, or other apparatus, use a rotary actuator for supporting a work tool, such as an objective lens which is pivotable or rotatable without a pivot pin. Rotation causing or tracking coils on the rotary actuator are disposed adjacent to permanent magnets to selectively effect rotation of the rotary actuator about the pivot pin. A bias electrical current is supplied to these coils to generate magnetic fields which are in opposite rotational senses; such fields force the rotary actuator against the pin in such a manner that the point of contact between the rotary actuator and the pin follows the rotation of the actuator about the pin.

公开(公告)号：US5629910A

公开(公告)日：1997-05-13

申请号：US320918

申请日：1994-10-11

申请人： David P. McReynolds ,  Kevin J. Reardon

发明人： David P. McReynolds ,  Kevin J. Reardon

IPC分类号： G11B17/028 ,  G11B17/22

CPC分类号： G11B17/0282 ,  G11B17/028 ,  G11B17/223

摘要： Library apparatus for holding a plurality of disk cartridges wherein the library housing contains a slot for alignment with the entry slot of a disk drive. The cartridges are stacked upon an inner case within the housing and the case is driven vertically to align individual disk cartridges with the slot. A push/pull mechanism within the housing pushes the selected cartridge through the slot into the disk drive and pulls it back into the library when finished. A specially designed cartridge has a handle for interaction with the push/pull mechanism. A pseudo-spindle device is attached to the drive to enable the use of minimal-dimension cartridges in order to increase the number of disks that can be stacked within a given space in the library.

摘要翻译： 用于保持多个磁盘盒的磁带库装置，其中磁带库容纳有与磁盘驱动器的入口槽对准的插槽。 盒被堆叠在壳体内的内壳上，并且壳体被垂直地驱动以使各个盘盒与槽对齐。 壳体内的推/拉机构将所选择的墨盒通过插槽推入磁盘驱动器，并在完成时将其拉回库中。 专门设计的墨盒具有与推/拉机构相互作用的手柄。 一个伪主轴装置连接在驱动器上，以便能够使用最小尺寸的盒式磁带，以增加可以在图书馆的给定空间内堆叠的磁盘的数量。

公开(公告)号：US5144611A

公开(公告)日：1992-09-01

申请号：US591158

申请日：1990-10-01

申请人： Edward M. Engler ,  Timothy S. Gardner ,  David P. McReynolds ,  Stephen M. Ward

发明人： Edward M. Engler ,  Timothy S. Gardner ,  David P. McReynolds ,  Stephen M. Ward

IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B7/12 ,  G11B7/24 ,  G11B23/00 ,  G11B23/02 ,  G11B23/03 ,  G11B33/14

CPC分类号： G11B33/1446 ,  G11B23/021 ,  G11B23/0327 ,  G11B7/121 ,  G11B7/24

摘要： The invention is a cleaning cartridge which includes a housing and a tube for injecting a compressed gas therethrough and into specific areas of an optical disk drive. The tube is removably connectable at one end to a compressed gas supply, and is aimed at the other end to direct gas exiting therefrom at both the objective lens, beam-directing prism or mirror, or other internal optical disk drive components when the cartridge is seated in the drive. Upon insertion of the cleaning cartridge into the optical disk drive in the usual manner for any optical disk cartridge, gas is released from the compressed gas source, through the tube, and into the optical disk drive. The use of such a cleaning cartridge provides for easy, effective cleaning of any internal optical disk drive component without the abrasion and potential inconveniences associated with mechanical brushing, wiping, or other techniques.

摘要翻译： 本发明是一种清洁带，其包括壳体和用于将压缩气体注入到光盘驱动器的特定区域中的管道。 管一端可拆卸地连接到压缩气体源，另一端瞄准另一端以引导从物镜，光束定向棱镜或反射镜或其他内部光盘驱动器部件离开的气体，当墨盒为 坐在驱动器上。 在以任何光盘盒的通常方式将清洁带插入到光盘驱动器中时，气体从压缩气体源通过管被释放到光盘驱动器中。 使用这种清洁带可以容易地，有效地清洁任何内部光盘驱动器部件，而不会与机械刷洗，擦拭或其他技术相关的磨损和潜在的不便。