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25 条记录 (耗时 0.014 秒)

    Low noise amplifier circuit for magnetoresistive sensors for fast read-write switching in low supply voltage applications
    2.
    发明授权
    Low noise amplifier circuit for magnetoresistive sensors for fast read-write switching in low supply voltage applications 失效
    用于低电压应用中快速读写开关的磁阻传感器的低噪声放大器电路

    公开(公告)号：US5323278A

    公开(公告)日：1994-06-21

    申请号：US946208

    申请日：1992-09-17

    申请人： John T. Contreras ,  Stephen A. Jove ,  Klaas B. Klaassen ,  Jacobus C. Leonardus van Peppen

    发明人： John T. Contreras ,  Stephen A. Jove ,  Klaas B. Klaassen ,  Jacobus C. Leonardus van Peppen

    IPC分类号： G01R33/09 ,  G11B5/00 ,  G11B5/02 ,  G11B33/12 ,  G11B5/127 ,  G11B5/33

    CPC分类号： G11B33/122 ,  G01R33/09 ,  G11B5/00 ,  G11B5/02 ,  G11B2005/0016 ,  G11B2005/0018

    摘要： A data storage system comprises magnetoresistive (MR) sensing elements for sensing data from a recording medium that is referenced to ground, and an amplifier circuit including a biasing stage, an amplifying stage, and a matching stage, each referenced to a common supply voltage source and to ground. The biasing stage includes a reference current source for selectively biasing each MR element with a constant current and, in so doing, developing a single-ended voltage signal having a first dc component. The amplifying stage converts the single-ended voltage signal into an amplified single-ended output voltage signal having a second dc component but in which the first dc component is eliminated. The matching stage creates a bias and imposes said bias on the amplifying stage for converting the single-ended output voltage signal to a differential output voltage signal in which the second dc component is eliminated.

    摘要翻译： 数据存储系统包括磁阻（MR）感测元件，用于感测来自参考地的记录介质的数据;以及放大器电路，其包括偏置级，放大级和匹配级，每个参考公共电源电压源 和地面。 偏置级包括用于以恒定电流选择性地偏置每个MR元件的参考电流源，并且在这样做时，开发具有第一直流分量的单端电压信号。 放大级将单端电压信号转换成具有第二直流分量的放大的单端输出电压信号，其中第一直流分量被消除。 匹配级产生偏置并且在放大级上施加所述偏置，用于将单端输出电压信号转换成消除第二直流分量的差分输出电压信号。

    Amplification of signals produced by a magnetoresistive element
    3.
    发明授权
    Amplification of signals produced by a magnetoresistive element 失效
    由磁阻元件产生的信号的放大

    公开(公告)号：US5032935A

    公开(公告)日：1991-07-16

    申请号：US449686

    申请日：1989-12-12

    申请人： Stephen A. Jove ,  Klaas B. Klaassen ,  Long Tran

    发明人： Stephen A. Jove ,  Klaas B. Klaassen ,  Long Tran

    IPC分类号： G11B5/39 ,  G01R33/09 ,  G11B5/02 ,  G11B5/035 ,  G11B5/09

    CPC分类号： G11B5/035 ,  G01R33/09 ,  G11B5/09

    摘要： A circuit for producing a signal whose magnitude is a chosen amplitude compensation characteristic of the signals produced by a magnetoresistive (MR) element comprising an input stage which produces an amplified output signal which is coupled to the output stage, and control signals proportional to the resistance of the MR element and inversely proportional to the resistance of the MR element which are coupled to a feedforward circuit. The feedforward circuit generates a chosen amplitude equalization characteristic of the signals coupled to the feedforward circuit, and this signal is coupled to a bias terminal of the output stage so that the output stage produces a signal representing the chosen amplitude compensation characteristic of the signals produced by the MR element.

    Voltage amplifier for constant voltage biasing and amplifying signals from a MR sensor
    4.
    发明授权
    Voltage amplifier for constant voltage biasing and amplifying signals from a MR sensor 失效
    用于恒定电压偏置和放大来自MR传感器的信号的电压放大器

    公开(公告)号：US4786993A

    公开(公告)日：1988-11-22

    申请号：US880419

    申请日：1986-06-30

    申请人： Stephen A. Jove ,  Klaas B. Klaassen ,  Calvin S. Nomura ,  Jacobus C. L. Van Peppen

    发明人： Stephen A. Jove ,  Klaas B. Klaassen ,  Calvin S. Nomura ,  Jacobus C. L. Van Peppen

    IPC分类号： G01R33/09 ,  G11B5/00 ,  G11B5/02 ,  G11B5/127

    CPC分类号： G01R33/09 ,  G11B5/02 ,  G11B2005/0016

    摘要： An amplifier for voltage biasing and amplifying the signals produced by a magnetic sensor is provided. Electrically, the resistance of the sensor is disposed between the bases of a differential pair comprising the input stage of the amplifier. Constant bias voltage for the sensor is provided independently of sensor resistance. DC feedback to the input stage balances current flow in both paths of the differential input stage to correct for DC offset arising in the output from input stage emitter resistor. The amplified signal, representing .DELTA.R.sub.h /R.sub.h, is sensed as a voltage across the magnetoresistive sensor, where .DELTA.R.sub.h is the change in steady-state resistance, R.sub.h, of the sensor.

    摘要翻译： 提供了用于对由磁传感器产生的信号进行电压偏置和放大的放大器。 电气地，传感器的电阻设置在包括放大器的输入级的差分对的基极之间。 独立于传感器电阻提供传感器的恒定偏置电压。 到输入级的直流反馈平衡差分输入级两路径中的电流，以校正输入级发射极电阻输出中产生的直流偏移。 表示DELTA Rh / Rh的放大信号被感测为磁阻传感器两端的电压，其中DELTA Rh是传感器的稳态电阻Rh的变化。

    Motor mount for interference suppression in a hard disk drive
    5.
    发明授权
    Motor mount for interference suppression in a hard disk drive 有权
    电机支架用于硬盘驱动器中的干扰抑制

    公开(公告)号：US08174788B2

    公开(公告)日：2012-05-08

    申请号：US12011716

    申请日：2008-01-28

    申请人： John Contreras ,  Klaas B. Klaassen

    发明人： John Contreras ,  Klaas B. Klaassen

    IPC分类号： G11B17/02

    CPC分类号： G11B33/1493 ,  G11B25/043

    摘要： A method for manufacturing a hard disk drive is described. The method includes providing a motor assembly, the motor assembly comprising a stationary portion and a rotatable portion for rotating a magnetic disk with respect to said stationary portion and providing a base for receiving the motor assembly. The method further includes providing an adhesive for mounting the motor assembly to said base wherein the adhesive is electrically conductive and mounting the stationary portion of the motor assembly to the base utilizing the adhesive such that the adhesive provides a low resistance path between the base and the motor assembly.

    摘要翻译： 对硬盘驱动器的制造方法进行说明。 该方法包括提供电动机组件，该电动机组件包括固定部分和用于相对于所述静止部分旋转磁盘的可旋转部分，并且提供用于接收电动机组件的基座。 该方法还包括提供用于将马达组件安装到所述底座的粘合剂，其中粘合剂是导电的，并且使用粘合剂将马达组件的固定部分安装到基座上，使得粘合剂在底座和底座之间提供低阻力路径 电机总成。

    EMR SENSOR AND TRANSISTOR FORMED ON THE SAME SUBSTRATE
    6.
    发明申请
    EMR SENSOR AND TRANSISTOR FORMED ON THE SAME SUBSTRATE 有权
    EMR传感器和晶体管在相同的基板上形成

    公开(公告)号：US20080088982A1

    公开(公告)日：2008-04-17

    申请号：US11549879

    申请日：2006-10-16

    申请人： Liesl Folks ,  Robert E. Fontana ,  Bruce A. Gurney ,  Klaas B. Klaassen ,  Stefan Maat

    发明人： Liesl Folks ,  Robert E. Fontana ,  Bruce A. Gurney ,  Klaas B. Klaassen ,  Stefan Maat

    IPC分类号： G11B5/33

    CPC分类号： G11B5/3993

    摘要： Magnetic sensing chips and methods of fabricating the magnetic sensing chips are disclosed. A magnetic sensing chip as described herein includes an EMR sensor formed on a substrate from multiple semiconductor layers. One or more of the semiconductor layers form a quantum well comprising a two-dimensional electron gas (2DEG) or hole gas (2DHG). The magnetic sensing chip also includes one or more transistors formed on the substrate from the multiple semiconductor layers. The transistor(s) likewise include a quantum well comprising a 2DEG or 2DHG. The EMR sensor and the transistor(s) are connected by one or more connections so that the transistor(s) amplifies data signals from the EMR sensor.

    摘要翻译： 公开了磁感测芯片和制造磁感测芯片的方法。 如本文所述的磁传感芯片包括形成在来自多个半导体层的衬底上的EMR传感器。 一个或多个半导体层形成包含二维电子气（2DEG）或空穴气体（2DHG）的量子阱。 磁感测芯片还包括从多个半导体层形成在衬底上的一个或多个晶体管。 晶体管同样包括包含2DEG或2DHG的量子阱。 EMR传感器和晶体管通过一个或多个连接连接，使得晶体管放大来自EMR传感器的数据信号。

    Integrated head-electronics interconnection suspension for a data recording disk drive
    7.
    发明授权
    Integrated head-electronics interconnection suspension for a data recording disk drive 失效
    用于数据记录磁盘驱动器的集成头 - 电子互连悬架

    公开(公告)号：US5608591A

    公开(公告)日：1997-03-04

    申请号：US489310

    申请日：1995-06-09

    申请人： Klaas B. Klaassen

    发明人： Klaas B. Klaassen

    IPC分类号： G11B5/48 ,  G11B5/60 ,  G11B21/02 ,  G11B21/21 ,  H05K1/02 ,  H05K1/03 ,  H05K1/05

    CPC分类号： G11B5/486 ,  H05K1/0216 ,  H05K1/0306 ,  H05K1/056 ,  H05K2201/09272 ,  H05K2201/0969 ,  H05K2201/09727

    摘要： An integrated transducer-electronics interconnection suspension for a disk drive having a high data transfer rate generally above 15 Mbytes/sec between the transducer and the read/write electronics. A suspension supports a slider to which a transducer is mounted and maintains the slider in close proximity to the disk surface. An integrated transducer-electronics interconnection suspension is a laminate structure having electrically conductive traces as part of the structure and connecting the transducer with the read/write electronics. It can support high data transfer rates between the transducer and the read/write electronics by avoiding sudden changes in the characteristic impedance of the traces to minimize signal reflection on them. The width of the traces are shaped accordingly to prevent abrupt changes in the trace impedance caused by trace bonding areas, apertures and other mechanical obstructions in the suspension. Changes in the traces' direction are gradual to avoid signal reflection. Also, a patterned electrically conductive back plane may be provided in the laminate to better control the trace characteristic impedance. Where a trace crosses above a back plane opening, lateral extensions from the trace's side edges are formed to compensate for the resulting impedance change. In addition, the traces and bonding areas are grouped by signal type, with sufficient spacing between the groups, to minimize cross-coupling of the signals.

    摘要翻译： 用于磁盘驱动器的集成传感器 - 电子连接悬架，其具有在换能器和读/写电子器件之间通常高于15M字节/秒的高数据传输速率。 悬架支撑安装换能器的滑块，并将滑块保持在靠近磁盘表面的位置。 集成的换能器 - 电子互连悬架是具有作为结构的一部分的导电迹线并将换能器与读/写电子装置连接的层压结构。 它可以通过避免迹线的特性阻抗的突然变化来支持传感器和读/写电子设备之间的高数据传输速率，以最小化信号反射。 迹线的宽度相应地成形，以防止由于悬浮液中的痕迹粘合区域，孔和其它机械障碍引起的迹线阻抗的突然变化。 轨迹方向的变化是渐进的，以避免信号反射。 此外，可以在层叠体中提供图案化的导电背面，以更好地控制迹线特性阻抗。 当轨迹穿过背面开口上方时，形成从轨迹侧边缘的侧向延伸以补偿所产生的阻抗变化。 此外，迹线和结合区域通过信号类型分组，在组之间具有足够的间隔，以最小化信号的交叉耦合。

    High frequency magnetic recording method
    9.
    发明授权
    High frequency magnetic recording method 失效
    高频磁记录方法

    公开(公告)号：US4547817A

    公开(公告)日：1985-10-15

    申请号：US691690

    申请日：1985-01-15

    申请人： Klaas B. Klaassen

    发明人： Klaas B. Klaassen

    IPC分类号： G11B5/02 ,  G11B5/03 ,  G11B5/596 ,  G11B5/09 ,  G11B21/10

    CPC分类号： G11B5/02 ,  G11B5/03 ,  G11B5/5965

    摘要： A method for recording high frequency signals representing data with simultaneous readout of low frequency information, such as servo information prerecorded on a magnetic disk, comprises the step of modulating with the data a carrier signal having a repetition frequency displaced significantly from the baseband of the data. The nonlinearity of the recording channel converts the modulated signal spectrum into the low frequency baseband so that the data is magnetically recorded while the low frequency prerecorded information is read out.

    摘要翻译： 用于记录表示具有同时读出低频信息的高频信号的方法，例如预先记录在磁盘上的伺服信息，包括用数据调制具有从数据的基带显着偏移的重复频率的载波信号的步骤 。 记录通道的非线性将调制信号频谱转换为低频基带，使得在读出低频预先记录的信息时磁数据被记录。