公开(公告)号：US5235574A

公开(公告)日：1993-08-10

申请号：US787205

申请日：1991-11-04

申请人： Henry E. Aviles ,  Edwin R. Childers ,  James L. Overacker ,  Ronald P. Stahl

发明人： Henry E. Aviles ,  Edwin R. Childers ,  James L. Overacker ,  Ronald P. Stahl

IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/135 ,  G11B7/22

CPC分类号： G11B7/1356 ,  G11B7/0901 ,  G11B7/094

摘要： An optical disk drive is disclosed in which sensing the position of a tilting prism driven by a fine tracking actuator uses the optical beam prior to its interaction with an optical disk. The optical beam emitted by a laser is redirected by the tilting prism. Most of the optical beam is reflected by the tilting prism in a direction through an objective lens for focused interaction with an optical disk. assuming a disk is mounted in the optical disk drive. The remainder of the optical beam is transmitted through the tilting prism, including any offset of the beam resulting from the refraction characteristics of the tilting prism, and received by a split far field detector. The split far field detector measures the offset of the optical beam which is a direct measure of the rotational position of the tilting prism. A relative position error signal is then generated and input to the coarse tracking actuator to coordinate its operation with that of the fine tracking actuator.

摘要翻译： 公开了一种光盘驱动器，其中感测由精细跟踪致动器驱动的倾斜棱镜的位置在与光盘相互作用之前使用光束。 由激光发射的光束被倾斜棱镜重定向。 大部分光束被倾斜棱镜沿着通过物镜的方向反射，用于与光盘的聚焦相互作用。 假设磁盘安装在光盘驱动器中。 光束的其余部分通过倾斜棱镜透射，包括由倾斜棱镜的折射特性产生的并由分离远场检测器接收的光束的任何偏移。 分裂远场检测器测量作为倾斜棱镜的旋转位置的直接测量的光束的偏移。 然后产生相对位置误差信号并输入到粗跟踪致动器以将其操作与精细跟踪致动器的操作协调。

公开(公告)号：US5299756A

公开(公告)日：1994-04-05

申请号：US966632

申请日：1992-10-26

申请人： Paul Y. Hu ,  James L. Overacker

发明人： Paul Y. Hu ,  James L. Overacker

IPC分类号： G11B15/60 ,  G11B23/087 ,  G11B23/04 ,  B65H27/00

CPC分类号： G11B23/08757 ,  G11B15/60

摘要： A hydrodynamic tape guide includes a thin metal foil attached to a substrate by a pin inserted into a groove in the substrate. The groove is of a geometry including a first region of a relatively small width and at a relatively shallow depth and a second region of a relatively large width deeper into the substrate. The pin is of a thickness greater than the first width, but less than the second width.

摘要翻译： 流体动力带引导件包括通过插入基板中的凹槽中的销钉附接到基板的薄金属箔。 凹槽具有几何形状，其包括相对较小宽度的第一区域和相对较浅的深度以及深入基底的较大宽度的第二区域。 销的厚度大于第一宽度，但小于第二宽度。