公开(公告)号：US4129937A

公开(公告)日：1978-12-19

申请号：US827530

申请日：1977-08-25

申请人： Gerald R. Knutson ,  Karl A. Shidler

发明人： Gerald R. Knutson ,  Karl A. Shidler

IPC分类号： G11B5/10 ,  G11B5/11 ,  G11B5/187 ,  G11B5/265 ,  G11B5/40 ,  G11B5/60 ,  G11B17/022 ,  G11B17/032 ,  G11B23/50 ,  G11B5/42

CPC分类号： G11B17/032 ,  G11B17/022 ,  G11B23/505 ,  G11B5/11 ,  Y10T29/49041 ,  Y10T29/49048 ,  Y10T29/49055

摘要： A transducer particularly for use with magnetic record disks and composed of cores having transducing gaps therein adapted to contact or be in near contact with a record disk at the gaps and composed also of outriggers on the sides of the cores for increasing the surface area of the transducer adapted to contact or be in near contact with a record disk. The cores are of ferrite and have windings thereon, and the outriggers are of ceramic, both the ferrite and ceramic being nonconductive electrically. One of the outriggers is provided with a plating of electrically conductive material on a side surface with the plating being coterminous with the surface of the outrigger adapted to contact the record disk or be in near contact with it, and a ground lead is connected with the plating so as to ground any electrostatic charge on the surface of the disk.

摘要翻译： 特别是与磁记录盘一起使用并由其中具有换能间隙的芯组成的换能器，其适于在间隙处与记录盘接触或接近接触，并且还包括在芯的侧面上的外伸支架，以增加磁芯的表面积 换能器适于与记录盘接触或接近接触。 铁芯是铁氧体并且具有绕组，外延支架是陶瓷的，铁氧体和陶瓷都是不导电的。 其中一个外伸支架在侧表面上设置有导电材料的镀层，其中电镀与外伸支架的表面相邻，适于与记录盘接触或与其接触，并且接地引线与 电镀，以便在盘的表面上研磨任何静电电荷。

公开(公告)号：US4110804A

公开(公告)日：1978-08-29

申请号：US817755

申请日：1977-07-21

申请人： Daniel O. Castrodale ,  Jeffrey L. Lovgren ,  Ralph A. Russell ,  Karl A. Shidler

发明人： Daniel O. Castrodale ,  Jeffrey L. Lovgren ,  Ralph A. Russell ,  Karl A. Shidler

IPC分类号： G11B5/02 ,  G11B5/17 ,  G11B5/265 ,  G11B5/26

CPC分类号： G11B5/265 ,  G11B5/02 ,  G11B5/17

摘要： A magnetic head or transducer assembly for cooperating with a relatively moving magnetic medium and for reading and/or writing a track of magnetic information on the medium and for erasing the edges of the track and old information adjacent to the edges of a newly written track. The head comprises a central magnetic core with a gap on an active face of the head assembly and with a read/write coil on the magnetic core and comprises a pair of additional, erase magnetic cores on opposite sides of the central magnetic core and forming a pair of erase gaps on the active face of the head assembly. A single erase coil is disposed on opposite legs of the erase cores, and an L-shaped side bar completes the erase magnetic circuit for both of the erase cores and lies on one end of the erase coil and provides an air gap between it and the ends of each of these erase core legs so as to cause the action of the two erase gaps to be equal in their erasing action.

摘要翻译： 磁头或换能器组件，用于与相对移动的磁介质配合，并用于在介质上读取和/或写入磁信息的轨迹，并用于擦除轨道的边缘和与新写入轨道的边缘相邻的旧信息。 磁头包括中心磁芯，在磁头组件的有效面上具有间隙，在磁芯上具有读/写线圈，并且在中心磁芯的相对侧上包括一对附加的擦除磁芯，并形成 在头部组件的主动面上的一对擦除间隙。 单个擦除线圈设置在擦除芯的相对的支腿上，并且L形侧边条完成了两个擦除芯的擦除磁路，并且位于擦除线圈的一端，并且在其与第二擦除线圈之间提供气隙 这些擦除芯腿中的每一个的端部，以便使两个擦除间隙的动作在其擦除动作中相等。

公开(公告)号：US4870635A

公开(公告)日：1989-09-26

申请号：US909142

申请日：1986-09-19

申请人： Timothy R. Block ,  Mark R. Enstrom ,  Francis S. Luecke ,  Karl A. Shidler ,  Ronald L. Soderstrom

发明人： Timothy R. Block ,  Mark R. Enstrom ,  Francis S. Luecke ,  Karl A. Shidler ,  Ronald L. Soderstrom

IPC分类号： G11B7/085 ,  G01B9/02 ,  G11B5/55

CPC分类号： G11B5/5526

摘要： The invention uses a small sized, low cost, high accuracy, semiconductor laser interferometer to position the transducer in a disc storage system. Light is reflected back over the path to be measured and directly back into the semiconductor laser. This causes the power present in the laser to be varied. Unexpectedly, the output of the photosensor associated with the laser has an asymmetric, sawtooth waveform.

摘要翻译： 本发明使用小尺寸，低成本，高精度的半导体激光干涉仪将传感器定位在盘存储系统中。 光被测量的路径反射回并直接返回到半导体激光器中。 这导致激光器中存在的功率变化。 出乎意料的是，与激光器相关的光传感器的输出具有不对称的锯齿形波形。

公开(公告)号：US4424539A

公开(公告)日：1984-01-03

申请号：US333837

申请日：1981-12-23

申请人： Steven D. Keidl ,  Karl A. Shidler

发明人： Steven D. Keidl ,  Karl A. Shidler

IPC分类号： G11B5/596 ,  G11B5/012 ,  G11B5/02 ,  G11B19/12 ,  G11B19/28 ,  G11B21/10 ,  G11B23/36 ,  G11B23/42 ,  G11B27/32 ,  G11B5/82

CPC分类号： G11B19/12 ,  G11B19/28 ,  G11B21/106 ,  G11B23/36 ,  G11B23/42 ,  G11B27/32 ,  G11B2220/20 ,  G11B2220/2512

摘要： Control information for a flexible magnetic disk storage assembly is recorded on the periphery of the disk in a region not used for recording data. The control information is read through the protective cover or envelope which encloses the disk by means of a magnetic transducer such as a four track audio cassette head which bears against the envelope. By recording index and sector pulses as part of the control information, hard sectoring can be inexpensively and accurately achieved. A recorded fixed frequency control signal can be read and used as part of the feedback loop in a phase locked oscillator used to control a d.c. motor driving the spindle. The control information can also include servo tracks which assist in registering the data transducer directly over data tracks on media which has changed its dimensions.

摘要翻译： 软磁盘存储组件的控制信息被记录在不用于记录数据的区域中的盘周围。 控制信息通过保护盖或信封读取，保护盖或信封通过诸如四通道音频盒式磁带头之类的磁性换能器包围磁盘，该磁性传感器承载在信封上。 通过记录索引和扇区脉冲作为控制信息的一部分，可以廉价和准确地实现硬扇区。 记录的固定频率控制信号可以被读取并用作用于控制直流电压的锁相振荡器中的反馈回路的一部分。 电机驱动主轴。 控制信息还可以包括有助于将数据传感器直接注册到已经改变其尺寸的介质上的数据轨道上的伺服轨道。