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42 条记录 (耗时 0.026 秒)

    Spin torque oscillator sensor
    1.
    发明授权
    Spin torque oscillator sensor 有权
    旋转扭矩振荡器传感器

    公开(公告)号：US08259409B2

    公开(公告)日：2012-09-04

    申请号：US12492050

    申请日：2009-06-25

    申请人： Patrick Mesquita Braganca ,  Bruce Alvin Gurney ,  Bruce Alexander Wilson

    发明人： Patrick Mesquita Braganca ,  Bruce Alvin Gurney ,  Bruce Alexander Wilson

    IPC分类号： G11B5/33

    CPC分类号： G01R33/1284 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3903 ,  G11B2005/0016 ,  H01F10/3254 ,  H01F10/3268 ,  H01F10/3286 ,  H01F10/329 ,  H01L43/08

    摘要： A spin torque oscillation magnetoresistive sensor for measuring a magnetic field. The sensor uses a change in precessional oscillation frequency of a magnetization of a magnetic layer to determine the magnitude of a magnetic field. The sensor can include a magnetic free layer, a magnetic pinned layer and a non-magnetic layer sandwiched therebetween. Circuitry is connected with these layers to induce an electrical current through the layers. Spin polarization of electrons traveling through the device causes a spin torque induced precession of the magnetization of one or more of the layers. The frequency of this oscillation modulates in response to a magnetic field. The modulation of the oscillation frequency can be measured to detect the presence of the magnetic field, and determine its magnitude.

    摘要翻译： 用于测量磁场的自旋扭矩振荡磁阻传感器。 传感器使用磁性层的磁化的进动振荡频率的变化来确定磁场的大小。 传感器可以包括磁性自由层，磁性被钉扎层和夹在其间的非磁性层。 电路与这些层连接以引起电流通过层。 穿过器件的电子的旋转极化导致自旋转矩引起一个或多个层的磁化的进动。 该振荡的频率响应于磁场而调制。 可以测量振荡频率的调制以检测磁场的存在，并确定其幅度。

    PATTERNED MAGNETIC RECORDING DISK WITH PATTERNED SERVO SECTORS AND METHOD USING BLOCK COPOLYMERS FOR MAKING A MASTER MOLD FOR NANOIMPRINTING THE DISK
    2.
    发明申请
    PATTERNED MAGNETIC RECORDING DISK WITH PATTERNED SERVO SECTORS AND METHOD USING BLOCK COPOLYMERS FOR MAKING A MASTER MOLD FOR NANOIMPRINTING THE DISK 有权
    带有图案伺服器的图形磁记录盘和使用块状共聚物制备用于纳米片的主模的方法

    公开(公告)号：US20110096436A1

    公开(公告)日：2011-04-28

    申请号：US12604333

    申请日：2009-10-22

    申请人： Thomas R. Albrecht ,  Jonathan Darrel Coker ,  Ricardo Ruiz ,  Bruce Alexander Wilson

    发明人： Thomas R. Albrecht ,  Jonathan Darrel Coker ,  Ricardo Ruiz ,  Bruce Alexander Wilson

    IPC分类号： G11B5/82 ,  B05D7/00 ,  B44C1/22

    CPC分类号： G11B5/855

    摘要： A patterned-media perpendicular magnetic recording disk has patterned servo regions and is nanoimprinted from a master mold made using directed self-assembly of block copolymers. The disk has patterned concentric circular data tracks of discrete data islands, with the tracks having a track pitch in the radial or cross-track direction. The disk also has patterned servo sectors extending generally radially across the patterned data tracks. The servo pattern is a chevron pattern of slanted or non-radial stripes that have a stripe pitch in the cross-stripe direction substantially equal to the track pitch. As a result of the method of making the master mold, the nanoimprinted disk has a chevron servo pattern with non-radial stripes that are magnetized segments of radial lines separated by nonmagnetic spaces.

    摘要翻译： 图形介质垂直磁记录盘具有图案化的伺服区域，并且由使用嵌段共聚物的定向自组装制成的母模进行纳米压印。 磁盘具有离散数据岛的图案化的同心圆形数据轨道，轨道具有径向或交叉轨道方向的轨道间距。 磁盘还具有沿图案化数据磁道大致径向延伸的图案化伺服扇区。 伺服图案是斜横条纹或非径向条纹的人字形图案，其在横条方向上具有基本上等于轨道间距的条纹间距。 作为制造母模的方法，纳米压印盘具有具有非径向条纹的人字形伺服图案，其是由非磁性空间分开的径向线的磁化段。

    Magnetic recording disk drive with patterned media and system for clocking write data
    4.
    发明授权
    Magnetic recording disk drive with patterned media and system for clocking write data 有权
    具有图案化介质的磁记录磁盘驱动器和用于对写入数据进行计时的系统

    公开(公告)号：US07675703B2

    公开(公告)日：2010-03-09

    申请号：US11759959

    申请日：2007-06-08

    申请人： Thomas R. Albrecht ,  David Timothy Flynn ,  Richard Leo Galbraith ,  Michael Anthony Moser ,  Bruce Alexander Wilson ,  Xiao Z. Wu

    发明人： Thomas R. Albrecht ,  David Timothy Flynn ,  Richard Leo Galbraith ,  Michael Anthony Moser ,  Bruce Alexander Wilson ,  Xiao Z. Wu

    IPC分类号： G11B5/09

    CPC分类号： G11B5/09 ,  G11B5/746 ,  G11B20/10009 ,  G11B20/10222 ,  G11B20/1403 ,  G11B2020/1281 ,  G11B2220/2516

    摘要： A system and method accurately clocks write data to the discrete data blocks in a patterned media disk drive. The precise time intervals between successive timing marks in the data tracks are measured by a timing mark detector that counts the integer number of write clock cycles between successive timing marks and the fractional part of a write clock cycle by detecting the phase difference between a timing mark and a reference signal. The resulting timing error is output to a write clock compensator. The write clock is capable of generating equally spaced primary phases and phases intermediate the primary phases. The compensator includes a phase rotator that controls which write clock phase is selected for output. The value in a phase register of the compensator is used to control the phase rotator to advance or retard the write clock phase, and thus to adjust its frequency and phase so as to be synchronized for writing to the data blocks.

    摘要翻译： 系统和方法将写入数据精确地记录在图案化媒体盘驱动器中的离散数据块上。 通过定时标记检测器来测量数据轨道中连续定时标记之间的精确时间间隔，该定时标记检测器通过检测定时标记之间的相位差来计数连续定时标记与写入时钟周期的小数部分之间的写入时钟周期的整数， 和参考信号。 所产生的定时误差被输出到写时钟补偿器。 写时钟能够产生相等间隔的初级相和主相之间的相位。 补偿器包括一个相位旋转器，用于控制哪个写入时钟相位被选择用于输出。 补偿器的相位寄存器中的值用于控制相位旋转器提前或延迟写时钟相位，并因此调整其频率和相位，以便同步写入数据块。

    Multiple extraordinary magnetoresistive (EMR) sensor utilizing both current leads
    7.
    发明授权
    Multiple extraordinary magnetoresistive (EMR) sensor utilizing both current leads 失效
    使用两个电流引线的多个非凡磁阻（EMR）传感器

    公开(公告)号：US07502206B2

    公开(公告)日：2009-03-10

    申请号：US11492375

    申请日：2006-07-24

    申请人： Bruce Alvin Gurney ,  Stefan Maat ,  Ernesto E. Marinero ,  Bruce Alexander Wilson

    发明人： Bruce Alvin Gurney ,  Stefan Maat ,  Ernesto E. Marinero ,  Bruce Alexander Wilson

    IPC分类号： G11B5/33

    CPC分类号： G11B5/3948 ,  G11C11/14

    摘要： An extraordinary magnetoresistive device EMR sensor that is capable of reading two separate tracks of data simultaneously. The EMR sensor has a semiconductor structure with an electrically conductive shunt structure at one side. The other side of the semiconductor structure is connected with a pair of current leads. Each of the current leads is disposed between a pair of voltage leads. Each pair of voltage leads is capable of independently reading a magnetic signal by measuring the voltage potential change across the pair of voltage leads. The EMR structure minimizes the number of leads needed to read two magnetic signals by using a single pair of current leads to read two tracks of data.

    摘要翻译： 一个非凡的磁阻器件EMR传感器，能够同时读取两个独立的数据轨迹。 EMR传感器具有在一侧具有导电分流结构的半导体结构。 半导体结构的另一侧与一对电流引线连接。 每个电流引线设置在一对电压引线之间。 每对电压引线可以通过测量一对电压引线上的电压电位变化来独立读取磁信号。 EMR结构通过使用单对电流引线读取两个数据轨迹来最小化读取两个磁信号所需的引线数量。

    MAGNETIC RECORDING DISK DRIVE WITH PATTERNED MEDIA AND SYSTEM FOR CLOCKING WRITE DATA
    9.
    发明申请
    MAGNETIC RECORDING DISK DRIVE WITH PATTERNED MEDIA AND SYSTEM FOR CLOCKING WRITE DATA 有权
    带有图形介质的磁记录磁盘驱动器和用于锁定写入数据的系统

    公开(公告)号：US20080304173A1

    公开(公告)日：2008-12-11

    申请号：US11759959

    申请日：2007-06-08

    申请人： Thomas R. Albrecht ,  David Timothy Flynn ,  Richard Leo Galbraith ,  Michael Anthony Moser ,  Bruce Alexander Wilson ,  Xiao Z. Wu

    发明人： Thomas R. Albrecht ,  David Timothy Flynn ,  Richard Leo Galbraith ,  Michael Anthony Moser ,  Bruce Alexander Wilson ,  Xiao Z. Wu

    IPC分类号： G11B5/09

    CPC分类号： G11B5/09 ,  G11B5/746 ,  G11B20/10009 ,  G11B20/10222 ,  G11B20/1403 ,  G11B2020/1281 ,  G11B2220/2516

    摘要： A system and method accurately clocks write data to the discrete data blocks in a patterned media disk drive. The precise time intervals between successive timing marks in the data tracks are measured by a timing mark detector that counts the integer number of write clock cycles between successive timing marks and the fractional part of a write clock cycle by detecting the phase difference between a timing mark and a reference signal. The resulting timing error is output to a write clock compensator. The write clock is capable of generating equally spaced primary phases and phases intermediate the primary phases. The compensator includes a phase rotator that controls which write clock phase is selected for output. The value in a phase register of the compensator is used to control the phase rotator to advance or retard the write clock phase, and thus to adjust its frequency and phase so as to be synchronized for writing to the data blocks.

    摘要翻译： 系统和方法将写入数据精确地记录在图案化媒体盘驱动器中的离散数据块上。 通过定时标记检测器来测量数据轨道中连续定时标记之间的精确时间间隔，该定时标记检测器通过检测定时标记之间的相位差来计数连续定时标记与写入时钟周期的小数部分之间的写入时钟周期的整数， 和参考信号。 所产生的定时误差被输出到写时钟补偿器。 写时钟能够产生相等间隔的初级相和主相之间的相位。 补偿器包括一个相位旋转器，用于控制哪个写入时钟相位被选择用于输出。 补偿器的相位寄存器中的值用于控制相位旋转器提前或延迟写时钟相位，并因此调整其频率和相位，以便同步写入数据块。

    DISK DRIVE WITH VARIABLE INCREMENTED COUNTING OF WRITES TO THE DATA TRACKS FOR MINIMIZING THE EFFECT OF FAR TRACK ERASURE
    10.
    发明申请
    DISK DRIVE WITH VARIABLE INCREMENTED COUNTING OF WRITES TO THE DATA TRACKS FOR MINIMIZING THE EFFECT OF FAR TRACK ERASURE 有权
    磁盘驱动器，可变数据写入数据跟踪，以最小化雷达跟踪效应的影响

    公开(公告)号：US20120014013A1

    公开(公告)日：2012-01-19

    申请号：US12839391

    申请日：2010-07-19

    申请人： Zvonimir Z. Bandic ,  Marco Sanvido ,  Bruce Alexander Wilson

    发明人： Zvonimir Z. Bandic ,  Marco Sanvido ,  Bruce Alexander Wilson

    IPC分类号： G11B15/04

    CPC分类号： G11B5/09 ,  G11B20/1816 ,  G11B2220/2516

    摘要： A hard disk drive (HDD) minimizes the effects of far track erasure (FTE) by counting the number of writes to the data tracks and incrementing counters based on the known effect of FTE on each track. The extent of the FTE effect is determined for each track within a range of tracks of the track being written, and based on the relative FTE effect for all the tracks in the range a count increment (CI) is determined for each track within the range. A counter is maintained for each track. For every writing to a track, a count for each track within a range of the track being written is increased by the CI value associated with the track number within the range. When the count value for a track reaches a predetermined threshold the data is read from that track and rewritten, preferably to the same track.

    摘要翻译： 硬盘驱动器（HDD）通过根据每个轨道上已知的FTE效应计数对数据磁道的写入次数和递增计数器，从而最大限度地减少了远跟踪擦除（FTE）的影响。 针对正在写入的磁道的磁道的范围内的每个磁道确定FTE效应的范围，并且基于对该范围内的所有磁道的相对FTE效应，对该范围内的每个磁道确定计数增量（CI） 。 为每个轨道维护计数器。 对于对轨道的每次写入，在被写入的轨道的范围内的每个轨道的计数增加与该范围内的轨道号相关联的CI值。 当轨道的计数值达到预定阈值时，从该磁道读取数据并将其重写，优选地改写为相同的轨道。