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1.发明授权
公开(公告)号：US5226966A
公开(公告)日：1993-07-13
申请号：US797504
申请日：1992-03-02
CPC分类号： G11B5/66 , G11B5/8404 , G11B5/845
摘要： An apparatus for providing radial uniaxial anisotropy in the soft magnetic layer of a magnetic recording disk is disclosed. While the soft magnetic layer is being deposited on the recording disk, the magnetic field. The alternating perpendicular magnetic field causes eddy currents to flow in the disk, in a circumferential direction. The eddy currents, in turn cause a magnetic field in a radial direction, thereby resulting in the desired radial uniaxial anisotropy.
摘要翻译： 公开了一种用于在磁记录盘的软磁层中提供径向单轴各向异性的装置。 当软磁层沉积在记录盘上时，磁场。 交替的垂直磁场使得涡流沿圆周方向在盘中流动。 涡流又产生径向磁场，从而产生所需的径向单轴各向异性。
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公开(公告)号：US5147679A
公开(公告)日：1992-09-15
申请号：US629191
申请日：1990-12-26
CPC分类号： G11B5/845 , G11B5/8404
摘要： A method and apparatus for providing radial uniaxial anisotropy in the soft magnetic layer of a magnetic recording disk is disclosed. While the soft magnetic layer is being deposited on the recording disk, the magnetic field. The alternating perpendicular magnetic field causes eddy currents to flow in the disk, in a circumferential direction. The eddy currents, in turn cause a magnetic field in a radial direction, thereby resulting in the desired radial uniaxial anisotropy.
摘要翻译： 公开了一种用于在磁记录盘的软磁层中提供径向单轴各向异性的方法和装置。 当软磁层沉积在记录盘上时，磁场。 交替的垂直磁场使得涡流沿圆周方向在盘中流动。 涡流又产生径向磁场，从而产生所需的径向单轴各向异性。
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3.发明授权Systems and methods for controlling light phase difference in interferometric waveguides at near field transducers 有权用于控制近场换能器的干涉波导中的光相位差的系统和方法公开(公告)号：US08675455B1
公开(公告)日：2014-03-18
申请号：US13399325
申请日：2012-02-17
CPC分类号： G11B5/6088 , G11B5/105 , G11B5/3133 , G11B5/314 , G11B2005/0021
摘要： Systems and methods for controlling light phase difference in interferometric waveguides at near field transducers by selectively heating the light source are provided. One such system for controlling light phase at the NFT of an interferometric waveguide includes a laser, a heater configured to heat the laser, a splitter configured to receive light from the laser and to split the light into a first waveguide arm and a second waveguide arm, the first waveguide arm and the second waveguide arm converging at a junction about opposite the splitter, and the NFT proximate the junction and configured to receive the light, where the first waveguide arm is longer than the second waveguide arm by a preselected distance, and where the heater is configured to generate and maintain a preselected phase difference in the light arriving at the NFT via the first waveguide arm and the second waveguide arm.
摘要翻译： 提供了通过选择性加热光源来控制近场换能器的干涉波导中的光相位差的系统和方法。 一种用于在干涉波导的NFT处控制光相的这种系统包括激光器，被配置为加热激光器的加热器，被配置为接收来自激光器的光并将光分成第一波导臂和第二波导臂 ，所述第一波导臂和所述第二波导臂在与所述分路器相对的接合处会聚，并且所述NFT邻近所述接合处并且被配置为接收所述光，其中所述第一波导臂比所述第二波导臂长一预定距离，以及 其中所述加热器被配置为在经由所述第一波导臂和所述第二波导臂到达所述NFT的光中产生并保持预选的相位差。
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公开(公告)号：US07880999B2
公开(公告)日：2011-02-01
申请号：US12205061
申请日：2008-09-05
申请人： Mourad Benakli , Michael L. Mallary
发明人： Mourad Benakli , Michael L. Mallary
CPC分类号： G11B5/3967 , G11B5/3116 , G11B5/3143 , G11B2005/0018
摘要： A magnetic storage system includes a magnetic storage medium and a transducer positioned adjacent the magnetic storage medium. The transducer has a reader positioned adjacent writer and a reader bias coil located on the transducer. Transducer circuitry is configured to apply a bias signal to the reader bias coil during a read-write operation. The reader bias coil generates a reader bias field proximate the reader.
摘要翻译： 磁存储系统包括磁存储介质和位于磁存储介质附近的换能器。 换能器具有位于写入器附近的读取器和位于换能器上的读取器偏置线圈。 传感器电路被配置为在读写操作期间将偏置信号施加到读取器偏置线圈。 读取器偏置线圈在读取器附近产生读取器偏置场。
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5.发明授权Method and apparatus for increasing data density in magnetic data storage disk drives 失效提高磁数据存储磁盘驱动器中数据密度的方法和装置
公开(公告)号：US5724212A
公开(公告)日：1998-03-03
申请号：US452225
申请日：1995-05-26
CPC分类号： G11B5/6005 , G11B5/012 , G11B5/5521 , G11B5/56
摘要： A method and apparatus for increasing recording density in zone bit recording on a magnetic recording disk without increasing track density by maximizing the data density the at disk's outer track. A magnetic recording head is attached to a parallelogram shaped slider such that the head's gap-to-radius skew and the slider rail skew changes continuously as the slider moves in an arcuate path from the disk's inner track to the disk's outer track. The parallelogram slider is designed to reduce the loss of data density at the outer track by minimizing the head's gap-to-radius skew while maximizing the rail skew angle at the outer track to maintain an essentially constant low fly height across the disk.
摘要翻译： 一种用于通过使盘的外轨道上的数据密度最大化来增加磁记录盘上的区位记录中的记录密度而不增加磁道密度的方法和装置。 磁记录头连接到平行四边形形状的滑块，使得当滑块从盘的内轨道到盘的外轨道的弧形路径中移动时，头部的间隙到半径偏斜和滑块轨道斜度连续变化。 平行四边形滑块旨在通过最小化磁头的半径偏移偏移来减少外轨道处的数据密度损失，同时最大化外轨道处的轨道偏斜角度，以保持穿过磁盘的基本恒定的低浮动高度。
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公开(公告)号：US5095613A
公开(公告)日：1992-03-17
申请号：US546176
申请日：1990-06-29
CPC分类号： G11B5/3106 , G11B5/1272 , G11B5/1871 , G11B5/6005 , G11B5/3163 , Y10T29/49032 , Y10T29/4905 , Y10T29/4981 , Y10T29/49998
摘要： In an improved process for fabricating thin film head sliders from a wafer on one face of which a plurality of electromagnetic devices are arranged in rows, a single-row bar is mechanically processed to form sliders while it remains an integral part of the wafer, or after it is bonded to a fixture under a condition which induces no bow on the bar. Alternatively, a double-row bar sliced from the wafer is used for fabrication of sliders, wherein each single-row bar is mechanically processed while it remains an integral part of the double-row bar, or after it is bonded to a fixture as an integral part of a double-row bar followed by severance of the bonded double-row bar into two single-row bars. The process eliminates or materially reduces any inducement of bow of the bar, which is a serious cause of throat height control problem associated with the prior fabrication methods.
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公开(公告)号：US08035910B2
公开(公告)日：2011-10-11
申请号：US11824137
申请日：2007-06-29
申请人： Michael L. Mallary , John W. Vanlaanen , Ching He
发明人： Michael L. Mallary , John W. Vanlaanen , Ching He
IPC分类号： G11B5/02
CPC分类号： G11B5/59616 , B82Y10/00 , G11B5/012 , G11B5/02 , G11B5/3948 , G11B5/59638 , G11B5/746 , G11B5/82 , G11B20/10398 , G11B20/10509 , G11B20/1879 , G11B2220/252
摘要： A read/write head for use with bit-patterned media detects write synchronization errors between a write clock and the bit-patterned media. In particular, the read/write head writes data to the bit-patterned media using a write clock. The data is then read from the bit-patterned media and used to detect write synchronization errors between the write clock and the location of bit-islands on the bit-patterned media. Based on detected write synchronization errors, the phase associated with the write clock is modified to align the write clock with the location of bit-islands on the bit-patterned media.
摘要翻译： 用于位图形介质的读/写头检测写时钟和位图形介质之间的写入同步错误。 特别地，读/写头使用写时钟将数据写入位图案介质。 然后从位图形介质读取数据，并用于检测写时钟与位图形介质上位位置之间的写入同步错误。 基于检测到的写同步错误，修改与写时钟相关的相位，以使写时钟与位图形介质上的位岛的位置对齐。
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公开(公告)号：US20090003144A1
公开(公告)日：2009-01-01
申请号：US11824221
申请日：2007-06-29
IPC分类号： G11B7/085
CPC分类号： G11B20/1879 , B82Y10/00 , G11B5/743 , G11B20/18 , G11B20/1833 , G11B27/36 , G11B2020/10759 , G11B2020/10796 , G11B2020/1836 , G11B2220/252
摘要： A disc drive system provides increased reliability by detecting and correcting errors associated with bit-patterned media. Write synchronization errors associated with bit-patterned media are addressed by including data storage for temporarily storing data that is being written to the disc drive. The data is read from both the disc drive and the storage medium and compared to detect write synchronization errors. A disc drive system for correcting write synchronization errors includes an encoder, non-volatile storage, and decoder device for implementing a parity-based scheme for increased reliability. Data strings being written to the disc drive are combined in an encoder to generate a parity string. The address of the data being written to the disc drive, along with the updated parity string is stored to the non-volatile storage. The data strings are read from the disc drive by the decoder. If uncorrectable errors are identified, the decoder employs the parity string in conjunction with the other data strings written to the disc drive to reconstruct the data string with uncorrectable errors.
摘要翻译： 磁盘驱动器系统通过检测和校正与位图形介质相关的错误来提供增加的可靠性。 与位图形介质相关联的写入同步错误通过包括临时存储要写入磁盘驱动器的数据的数据存储来解决。 数据从磁盘驱动器和存储介质读取，并进行比较以检测写同步错误。 用于校正写同步错误的盘驱动系统包括用于实现基于奇偶校验的方案以提高可靠性的编码器，非易失性存储器和解码器装置。 写入盘驱动器的数据串被组合在编码器中以产生奇偶校验串。 被写入到磁盘驱动器的数据的地址以及更新的奇偶校验字符串被存储到非易失性存储器中。 数据串由解码器从盘驱动器读取。 如果识别出不可校正的错误，则解码器将奇偶校验码串与写入盘驱动器的其他数据串结合使用不可校正的错误重建数据串。
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公开(公告)号：US5428887A
公开(公告)日：1995-07-04
申请号：US181582
申请日：1994-01-13
申请人： Michael L. Mallary
发明人： Michael L. Mallary
CPC分类号： G11B5/127 , G11B5/17 , G11B5/31 , G11B5/3113 , G11B5/313 , G11B5/3163 , Y10T29/49034 , Y10T29/49055
摘要： A thin film magnetic transducer is formed in a plurality of layers and comprises a yoke with at least one arm having segments respectively lying in separate said layers and connected through a transition layer, and one or more coils; the coil (or coils) and the yoke are intertwined to provide more than two flux interactions therebetween. In one aspect, the segments of the arm are oriented obliquely to each other and have easy axes of magnetization respectively transverse to the directions of flux conduction through said segments, and the segments are joined together so that flux can pass between them without flowing parallel to the easy axis of any of the segments.
摘要翻译： 薄膜磁换能器形成为多层，并且包括具有至少一个臂的轭，所述至少一个臂具有分别位于分离的所述层中并且通过过渡层连接的段和一个或多个线圈; 线圈（或线圈）和磁轭相互缠结以在其间提供多于两个的磁通相互作用。 在一个方面，臂的部分彼此倾斜地定向，并且容易的磁化轴分别横穿通过所述段的磁通传导方向，并且这些段被连接在一起，使得磁通在它们之间通过而不流动平行于 任何段的容易轴。
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10.发明授权Thin film read/write head for minimizing erase fringing and method of making the same 失效薄膜读/写头，用于最大限度地减少擦除边缘及其制作方法
公开(公告)号：US5267112A
公开(公告)日：1993-11-30
申请号：US767994
申请日：1991-09-30
CPC分类号： G11B5/3116 , G11B5/1871 , Y10T29/49052
摘要： The present invention pertains to a thin film magnetic recording head which minimizes erase fringing and the process for manufacturing the thin film magnetic recording head. The head is used to record and read information made up of alternating magnetization patterns on a magnetic recording medium. Known recording heads cause erase fringing of the magnetic medium during the write operations. The structure of the recording head of the present invention has the ABS portion of one of two magnetic poles beveled away from ABS at the gap to zero throat, reduces erase fringing of the magnetic recording medium and is easily manufactured. By reducing erase fringing, the present invention enables an increase in disk density of information without risking loss of data integrity.
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