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130 条记录 (耗时 0.012 秒)

    MAGNETICALLY ERECORDED DATA REPRODUCTION APPARTUS AND METHOD
    1.
    发明公开
    MAGNETICALLY ERECORDED DATA REPRODUCTION APPARTUS AND METHOD 审中-公开
    WIEDERGABEGERAET和磁性记录数据的程序

    公开(公告)号：EP1378890A4

    公开(公告)日：2008-03-19

    申请号：EP02717130

    申请日：2002-04-12

    申请人： SONY CORP

    发明人： KONDO NOBUHIRO ,  YANAGI YUJI

    IPC分类号： G11B5/027 ,  G11B20/10 ,  G11B5/00 ,  G11B5/008 ,  G11B5/012 ,  G11B5/02 ,  G11B5/035 ,  G11B5/09 ,  G11B5/39 ,  G11B5/53 ,  G11B20/22 ,  G11B20/24

    CPC分类号： G11B20/22 ,  G11B5/0086 ,  G11B5/02 ,  G11B5/035 ,  G11B5/09 ,  G11B5/53 ,  G11B20/10009 ,  G11B2005/0016

    摘要： The present invention relates to a magnetically recorded data reproduction apparatus which reproduces magnetically recorded data using a magnetoresistive head and method thereof. In this invention the recorded data are reproduced by a magnetoresistive head 2 and supplied to a reproduction amplifier 4. The signal from the reproduction amplifier 4 is then supplied to a high-pass filter 5 and a frequency component of, for example, 1 MHz or lower, is cut off. The signal from the HPF 5 is supplied to an integrating equalizer 6, a phase equalizer 7 and an analog cosine equalizer 8. The signal from the equalizer 8 is supplied to an AGC amplifier 10 through a low-frequency component correction circuit 9. The signal from the AGC amplifier 10 is supplied to an A/D converter 11. Further, the signal from the AGC amplifier 10 is supplied to the digital PLL circuit 12 and the extracted clock signal is supplied to the A/D converter 11. The digitized signal is then supplied to, for example, a Viterbi decoder 13 and the decoded signal is obtained at an output terminal 14. Thus, the effect of noise due to the so-called thermal asperity (TA noise) is removed, thereby preventing increases in the error rate of the reproduction signals due to the effect of TA noise and the occurrence of problems in equipment.

    APPARATUS FOR COMPENSATING FOR NON-LINEAR CHARACTERISTICS OF MAGNETORESISTIVE HEADS
    5.
    发明授权
    APPARATUS FOR COMPENSATING FOR NON-LINEAR CHARACTERISTICS OF MAGNETORESISTIVE HEADS 失效
    DEVICE FOR补偿磁阻磁头的非线性特性的

    公开(公告)号：EP0796491B1

    公开(公告)日：1999-11-10

    申请号：EP95943092.7

    申请日：1995-12-08

    申请人： SEAGATE TECHNOLOGY, INC.

    发明人： SHRINKLE, Louis, J. ,  SCHWALL, Matthew

    IPC分类号： G11B5/39 ,  G11B5/33 ,  G11B5/035

    CPC分类号： G11B20/10203 ,  G11B5/02 ,  G11B5/035

    摘要： An apparatus that compensates for the asymmetry and the baseline shift in the signal generated by a magnetoresistive head. The apparatus stores a first correction factor for the baseline shift, a second correction factor for correcting the amplitude of positive portion of the signal and a third correction factor for correcting the amplitude of negative portion of the signal. The first correction factor for correcting for baseline shift is added to the signal generated by the magnetoresistive head to generate a baseline corrected signal. The baseline corrected signal is then monitored for positive and negative excursion from the baseline and the positive excursions are multiplied by the second correction factor and the negative excursions are multiplied by the third correction factor for generating a compensated signal.

    EP0900434A4 -
    6.
    发明公开
    EP0900434A4 - 失效
    EP0900434A4 - Google专利

    公开(公告)号：EP0900434A4

    公开(公告)日：1999-03-10

    申请号：EP97918493

    申请日：1997-03-21

    IPC分类号： G11B5/60 ,  G11B5/00 ,  G11B5/012 ,  G11B5/035 ,  G11B5/48 ,  G11B21/16 ,  G11B25/04

    CPC分类号： G11B5/486 ,  G11B5/012 ,  G11B5/035 ,  G11B25/043 ,  G11B2005/0013

    摘要： A suspension (10) having integrated conductors (16) for supporting and electrically interconnecting a read/write head (36) to electronic circuitry in a disk drive. The capacitance to ground of the conductors (16) is controlled by the selective placement of shaped voids (20) in the suspension (10) at regions adjacent to the conductor paths. Portions of the suspension (10) may be generally the complement of the conductor structure (16) shape.

    摘要翻译： 具有集成导体（16）的悬架（10），用于支持读/写头（36）并将其电连接到磁盘驱动器中的电子电路。 导体（16）的接地电容通过在与导体路径相邻的区域处的悬架（10）中的成形空隙（20）的选择性放置来控制。 悬架（10）的部分通常可以是导体结构（16）形状的补充。

    EP0806036A4 -
    7.
    发明公开
    EP0806036A4 - 失效
    CN101607654A - Google专利

    公开(公告)号：EP0806036A4

    公开(公告)日：1997-11-12

    申请号：EP95940512

    申请日：1995-09-29

    IPC分类号： G11B5/035 ,  G11B5/48 ,  G11B5/55 ,  G11B5/596 ,  G11B21/08 ,  G11B5/82

    CPC分类号： G11B21/083 ,  G11B5/035 ,  G11B5/4886 ,  G11B5/5534 ,  G11B5/59611 ,  G11B5/59644 ,  G11B5/5965 ,  G11B5/59655 ,  G11B5/59683

    摘要： A method and apparatus for creating a position error signal (PES) voltage v. track distance curve for the head (20) of a hard disk drive (10). The disk (12) has a dedicated track which contains a plurality of servo bits (34) that allow the head to be centered with the centerline of the track. The dedicated track also has a number of calibration bits (50-60) each embedded at a known location off-set from the track centerline. The PES voltage v. track distance curve is generated by reading each calibration bit and storing the corresponding amplitude of the position error signal in a memory device of the disk drive. Each calibration bit is located from the track centerline a distance that is different from the other calibration bits so that there are provided multiple points on the track curve.

    摘要翻译： 一种用于为硬盘驱动器（10）的磁头（20）产生位置误差信号（PES）电压与磁道距离曲线的方法和装置。 盘（12）具有专用轨道，该专用轨道包含允许头部与轨道的中心线对中的多个伺服位（34）。 专用轨道还具有多个校准位（50-60），每个校准位嵌入在距离轨道中心线偏离的已知位置处。 通过读取每个校准位并将相应的位置误差信号的幅度存储在磁盘驱动器的存储装置中来产生PES电压对轨道距离曲线。 每个校准位都位于轨道中心线上与其他校准位不同的距离处，以便在轨道曲线上提供多个点。

    BRIDGE-TAP EQUALIZER METHOD AND APPARATUS.
    8.
    发明公开
    BRIDGE-TAP EQUALIZER METHOD AND APPARATUS. 失效
    VERFAHREN UND VORRICHTUNG ZURBRÜCKENABGRIFFSENTZERRUNG。

    公开(公告)号：EP0659311A4

    公开(公告)日：1997-10-29

    申请号：EP94920058

    申请日：1994-06-01

    申请人： UNIVERSAL DATA SYSTEMS INC

    发明人： NABORS DAVID H ,  NELSON DAVID PAUL

    IPC分类号： H03G11/04 ,  H03G5/02 ,  H03H11/04 ,  H04B3/04 ,  H04B3/08 ,  G11B5/035 ,  H03H5/00 ,  H03H7/18 ,  H03H9/00

    CPC分类号： H04B3/08 ,  H03G5/025

    摘要： An equalizer (100) is suitable for removing the delay distortion from a switched digital signal received from a telephone channel where the delay distortion is caused by a bridge-tap connected to the telephone channel. The equalizer includes a feedback delay circuit (200) which is arranged to delay the output signal (150) by an amount of time based on the square of the predominant frequency of the output signal. The resulting delayed feedback signal (130) is then combined with the input signal, thereby compensating for the delay distortion. The equalizer also includes an amplifier (103) which may be adjusted to compensate to the attenuation distortion caused by the bridge tap.

    摘要翻译： 均衡器（100）适用于消除从电话信道接收到的切换数字信号的延迟失真，其中延迟失真是由连接到电话信道的桥接抽头引起的。 均衡器包括反馈延迟电路（200），其被布置为基于输出信号的主频率的平方将输出信号（150）延迟一段时间。 所得到的延迟反馈信号（130）然后与输入信号组合，由此补偿延迟失真。 均衡器还包括放大器（103），其可以被调整以补偿由桥接抽头引起的衰减失真。

    Recording device with temperature-dependent write current control
    9.
    发明公开
    Recording device with temperature-dependent write current control 失效
    Aufzeichnungsvorrichtung mittemperaturabhängigerSchreibstromsteuerung。

    公开(公告)号：EP0624867A3

    公开(公告)日：1995-01-11

    申请号：EP94201230.3

    申请日：1994-05-03

    申请人： PHILIPS ELECTRONICS N.V.

    发明人： van Doorn, Rudolf Alexander ,  Verhallen, Franciscus Johannes Robertus

    IPC分类号： G11B5/02 ,  G11B5/035 ,  G11B15/02 ,  G11B5/008

    CPC分类号： G11B5/3945 ,  G11B5/035 ,  G11B5/3903 ,  G11B15/02

    摘要： A device for recording an information signal on a magnetic record carrier comprises a recording amplifier (3), a magnetic head (4), and means for controlling the write current amplitude in dependence on temperature variations which occur during recording. This is effected by means of a temperature detector. The magnetic head (4) has a write section (5) for recording an information signal on the magnetic record carrier in a recording mode of the device, and a read section (6) for reading an information signal from the record carrier in a playback mode of the device. The read section (6) is of the magneto-resistive type. The temperature detector is formed by the read section.

    摘要翻译： 用于在磁记录载体上记录信息信号的装置包括记录放大器（3），磁头（4）和用于根据记录期间发生的温度变化来控制写入电流幅度的装置。 这通过温度检测器来实现。 磁头（4）具有用于在设备的记录模式下在磁记录载体上记录信息信号的写入部分（5），以及用于在回放中从记录载体读取信息信号的读取部分（6） 设备的模式。 读取部分（6）是磁阻型的。 温度检测器由读取部分形成。