公开(公告)号：WO1998059340A1

公开(公告)日：1998-12-30

申请号：PCT/US1997018068

申请日：1997-10-07

Applicant: SEAGATE TECHNOLOGY, INC.

Inventor： SEAGATE TECHNOLOGY, INC. ,  BOUTAGHOU, Zine-Eddine

IPC: G11B17/00

CPC classification number: B82Y10/00 ,  G11B7/122 ,  G11B7/1372 ,  G11B7/1384 ,  G11B11/10554 ,  G11B11/1058

Abstract: An optical disc data storage system (10) includes an optical disc (12) having a data surface. An actuator arm (24) having a distal end is selectively radially positionable adjacent the data surface. A transducing element (30) is carried on a slider (20) which is coupled to the distal end of the actuator arm (24). The slider (20) includes an air bearing surface (56) and the transducing element (30) includes an optical mesa (54) adjacent the air bearing surface (56). The optical mesa (54) is spaced apart from the data surface whereby contact between the data surface and the mesa structure (54) is prevented.

Abstract translation: 光盘数据存储系统（10）包括具有数据表面的光盘（12）。 具有远端的致动器臂（24）可选择性地在数据表面附近定位。 转换元件（30）承载在联接到致动器臂（24）的远端的滑块（20）上。 滑块（20）包括空气支承表面（56），并且换能元件（30）包括邻近空气轴承表面（56）的光学台面（54）。 光学台面（54）与数据表面间隔开，从而防止数据表面和台面结构（54）之间的接触。

公开(公告)号：WO1998049677A1

公开(公告)日：1998-11-05

申请号：PCT/US1997017655

申请日：1997-09-30

Applicant: SEAGATE TECHNOLOGY, INC.

Inventor： SEAGATE TECHNOLOGY, INC. ,  LIU, Zhiqiang ,  FUNCHES, Otis, L. ,  HAMPSHIRE, Randall, D.

IPC: G11B05/55

CPC classification number: G11B5/5582

Abstract: Apparatus and method for improving vibration and mechanical shock response of a control system through the use of discrete-time sliding mode control with variable parameters are disclosed. A servo circuit (150) for positioning a head (118) of a disc drive (100) includes a reference generator (314, 414) generating position and velocity references, an observer (306, 406) generating position and velocity estimates, and error circuitry (322, 326, 422, 426) for determining position and velocity errors therefrom. Gain circuitry (330, 332, 334, 336, 338, 340, 430, 432) applies variable position and velocity gains to the position and velocity errors, respectively, the position and velocity gains varying with respect to at least the magnitudes of the position errors.

Abstract translation: 公开了通过使用具有可变参数的离散时间滑动模式控制来改善控制系统的振动和机械冲击响应的装置和方法。 用于定位磁盘驱动器（100）的磁头（118）的伺服电路（150）包括产生位置和速度参考的参考发生器（314,414），产生位置和速度估计的观测器（306,406）和误差 用于确定位置和速度误差的电路（322,326,422,426）。 增益电路（330,332,334,336,338,340,430,432）分别对位置和速度误差施加可变位置和速度增益，位置和速度增益分别相对于位置的至少大小变化 错误。

公开(公告)号：WO1998042063A1

公开(公告)日：1998-09-24

申请号：PCT/US1997004197

申请日：1997-03-19

Applicant: SEAGATE TECHNOLOGY, INC. ,  HEINE, Gunter, K. ,  LEUTHOLD, Hans ,  FLEURY, Christian

Inventor： SEAGATE TECHNOLOGY, INC.

IPC: H02K07/00

CPC classification number: H02K7/09 ,  F16C32/0444 ,  F16C32/0497 ,  F16C2370/12 ,  F16C2380/26 ,  G11B19/20 ,  H02K16/00 ,  H02K29/03

Abstract: A polyphase spindle DC motor (figure 1A, 1B) providing a torque (figure 1A) and an additional radial force (F, figure 1B) within the spindle motor utilizing the spindle components (magnets and stator laminations). Interaction between the magnets and currents flowing through conductors create the torque and radial force (F) required for overall stability and efficient operation of the system.

Abstract translation: 使用主轴部件（磁体和定子叠片）在主轴电动机内提供扭矩（图1A）和附加径向力（F，图1B）的多相主轴直流电动机（图1A，1B）。 磁体和流过导体的电流之间的相互作用产生了系统整体稳定性和有效运行所需的扭矩和径向力（F）。

公开(公告)号：WO1998019828A1

公开(公告)日：1998-05-14

申请号：PCT/US1996020088

申请日：1996-12-13

Applicant: SEAGATE TECHNOLOGY, INC. ,  HAO, Shanlin, X.

Inventor： SEAGATE TECHNOLOGY, INC.

IPC: B24B49/00

CPC classification number: B24B37/048 ,  B24B37/00 ,  B24B49/00

Abstract: A device (198) for lapping a bar (10) of the type which carries a plurality of sliders used in magnetic storage systems includes first, second, and third actuators (220, 222, 224) adapted to couple to the bar (10), and impart a first, second, and third controllable force in response to a first, second, and third control signal, respectively. An arm (204) couples to the first, second, and third actuators and applies a lapping force to the bar (10) which presses the bar (10) against a lapping surface (208) thereby causing material to be removed from the bar (10). A controller (262) provides the first, second, and third control signals to the first, second, and third actuators (220, 222, 224), respectively, to impart a plurality of forces onto the bar (10). The actuators (220, 222, 224) are controlled to obtain a desired profile of the bar (10) and to obtain a desired distribution of the lapping force across the profile of the bar (10).

Abstract translation: 一种用于研磨载有用于磁存储系统中的多个滑块的类型的杆（10）的装置（198）包括适于联接到杆（10）的第一，第二和第三致动器（220,222,224） 并且分别响应于第一，第二和第三控制信号赋予第一，第二和第三可控制力。 臂（204）联接到第一，第二和第三致动器，并将研磨力施加到杆（10），杆（10）将杆（10）压靠在研磨表面（208）上，从而使材料从杆 10）。 控制器（262）分别向第一，第二和第三致动器（220,222,224）提供第一，第二和第三控制信号，以将多个力施加到杆（10）上。 控制致动器（220,222,224）以获得条（10）的所需轮廓并且获得穿过杆（10）的轮廓的研磨力的期望分布。

公开(公告)号：WO1998016922A1

公开(公告)日：1998-04-23

申请号：PCT/US1997018325

申请日：1997-10-10

Applicant: SEAGATE TECHNOLOGY, INC.

Inventor： SEAGATE TECHNOLOGY, INC. ,  MEYER, Dallas, W. ,  NAGARAJAN, Subrahmanyan

IPC: G11B05/596

CPC classification number: G11B5/012 ,  G11B5/5526 ,  G11B5/59627 ,  G11B5/59633 ,  G11B5/59683 ,  G11B5/82 ,  G11B2005/0021

Abstract: A magnetic disc drive has a magnetoresistive element (26) for reading user data from concentric tracks of a rotatable magnetic recording disc (32). The magnetoresistive element has a resistance based on a magnetic field derived from user data and based on temperature of the magnetoresistive element. Heat generated by the bias current through the head is in part dissipated through the disc, the amount of heat dissipated being representative of disc/head spacing. The surface of the recording disc has contour elements (50, 52, 54) arranged in a pattern representing servo data, the contour elements having a height such that the spacing between the magnetoresistive element and the contour elements is different from the spacing between the magnetoresistive element and a nominal surface of the recording disc. As a result, a modulated signal (66) from the head contains a component representative of user data and a component representative of servo data.

Abstract translation: 磁盘驱动器具有用于从可旋转磁记录盘（32）的同心轨道读取用户数据的磁阻元件（26）。 磁阻元件具有基于从用户数据导出的磁场和基于磁阻元件的温度的电阻。 通过头部的偏置电流产生的热量部分地通过光盘消散，散热量代表光盘/磁头间距。 记录盘的表面具有以表示伺服数据的图案布置的轮廓元素（50,52,54），轮廓元件具有使得磁阻元件和轮廓元件之间的间隔不同于磁阻之间的间隔的高度 元件和记录盘的标称表面。 结果，来自头部的调制信号（66）包含表示用户数据的部件和表示伺服数据的部件。

公开(公告)号：WO1998004032A1

公开(公告)日：1998-01-29

申请号：PCT/US1997013106

申请日：1997-07-22

Applicant: SEAGATE TECHNOLOGY, INC. ,  FREDRICKSON, Lisa

Inventor： SEAGATE TECHNOLOGY, INC.

IPC: H03D01/00

CPC classification number: H03M13/6343 ,  G11B5/09 ,  G11B20/10009 ,  H03M13/3961 ,  H03M13/41

Abstract: A data symbol sequence detector (18-30) for choosing data symbol sequences likely to be represented by corresponding sequences of samples (15-17) received by the detector (18-30) with these sample sequences formed by sampling data signals (15) obtained from magnetically stored data (10) through a data retrieval channel which asymmetrically affects the magnitude values for a selected set of samples (19-20) in the sequence, and a magnitude difference determiner is used for obtaining representations of differences between values of the samples in the sequence and the corresponding estimated expected values. These differences representations can be limited in algebraic form.

Abstract translation: 一种数据符号序列检测器（18-30），用于选择可能由由检测器（18-30）接收的这些采样序列的采样数据信号（15）所接收的相应样本序列（15-17）表示的数据符号序列， 从磁存储数据（10）通过数据检索通道获得，该数据检索通道不对称地影响序列中所选择的一组采样（19-20）的幅度值，并且使用幅度差确定器来获得 序列中的样本和相应的估计预期值。 这些差异表示可以以代数形式来限制。

公开(公告)号：WO1998002880A1

公开(公告)日：1998-01-22

申请号：PCT/US1996011820

申请日：1996-07-17

Applicant: SEAGATE TECHNOLOGY, INC.

Inventor： SEAGATE TECHNOLOGY, INC. ,  RUDD, Gregory, I. ,  KHAN, Raquib, U.

IPC: G11B19/20

CPC classification number: G11B19/2009 ,  F16C33/6603 ,  F16C33/6696 ,  F16C2370/12 ,  F16N15/00

Abstract: A disc drive (10) includes a disc (30) and a motor having a rotatable portion (50) and a fixed portion (46). The fixed portion (46) and the rotatable portion (50) are separated by a bearing (52, 54), and the rotatable portion (50) supports the disc (30). A data transducer is coupled to an actuator (36) to move relative to the disc (30) to access different portions of the disc (30). The bearing (52, 54) includes a lubricant having an additive of perfluoropolyether with a reactive end group.

Abstract translation: 盘驱动器（10）包括盘（30）和具有可旋转部分（50）和固定部分（46）的马达。 固定部分（46）和可旋转部分（50）由轴承（52,54）分开，并且可旋转部分（50）支撑盘（30）。 数据传感器耦合到致动器（36）以相对于盘（30）移动以访问盘（30）的不同部分。 轴承（52,54）包括具有带有反应性端基的全氟聚醚添加剂的润滑剂。

公开(公告)号：WO1997043079A1

公开(公告)日：1997-11-20

申请号：PCT/US1997008328

申请日：1997-05-13

Applicant: SEAGATE TECHNOLOGY, INC. ,  WEI, Bo ,  MEYER, Dallas, W. ,  PAN, Zhengda ,  XUAN, Jialuo, J. ,  SHIH, Chung, Y.

Inventor： SEAGATE TECHNOLOGY, INC.

IPC: B23K26/06

CPC classification number: G11B5/82 ,  B23K26/06 ,  B23K26/064 ,  B23K26/0648 ,  B23K26/0652 ,  B23K26/0665 ,  B23K26/073 ,  G11B5/74

Abstract: Magnetic data storage disks (38), particularly along dedicated transducing head contact regions, are laser textured according to a process in which beam shaping optical components impart an elliptical or elongated cross-section to the laser beam. Consequently, individual texturing features such as rims (88) and nodules are elliptical or elongate, with more gradual height gradients in directions parallel to their major axes. The texturing features are oriented with respect to the direction of transducing head acceleration and deceleration. Texturing features are formed in a variety of patterns, including patterns with adjacent features contacting one another. Features may be formed with substantially different slopes on opposite sides of a maximum height region (90).

Abstract translation: 磁性数据存储盘（38），特别是沿着专用的传感头接触区域，根据波束成形光学部件赋予激光束的椭圆形或细长横截面的过程被激光纹理化。 因此，诸如轮辋（88）和结节的单个纹理特征是椭圆形或细长的，在与其主轴平行的方向上具有更渐进的高度梯度。 纹理特征相对于头部加速和减速传感的方向取向。 纹理特征以各种图案形成，包括具有彼此接触的相邻特征的图案。 特征可以在最大高度区域（90）的相对侧上形成有基本上不同的斜面。

公开(公告)号：WO1997042628A1

公开(公告)日：1997-11-13

申请号：PCT/US1996006829

申请日：1996-05-09

Applicant: SEAGATE TECHNOLOGY, INC. ,  XUAN, Jialuo, Jack ,  CHEN, Ga-Lane

Inventor： SEAGATE TECHNOLOGY, INC.

IPC: G11B05/64

CPC classification number: G11B5/7315 ,  G11B5/7325 ,  G11B5/8404

Abstract: A magnetic recording medium is textured with a pulsed laser light beam through a multiple lens focusing system. The use of a multiple lens focusing system enables the formation of a plurality of relatively uniform protrusions smaller than those obtained with a single lens focusing system, thereby avoiding abrupt local profile changes. In an embodiment, the laser light beam is split, as by offsetting the lenses, to obtain a plurality of pairs of even smaller protrusions than obtained with a laser light beam having a centralized energy profile. The pulsed, multiple lens focused laser light beam can be used to texture a substrate, underlayer or magnetic layer. The resulting laser textured magnetic recording medium exhibits improved flying stability, glide performance and reliability.

Abstract translation: 磁记录介质通过多透镜聚焦系统用脉冲激光束纹理化。 使用多重透镜聚焦系统能够形成比用单个透镜聚焦系统获得的那些更小的多个相对均匀的凸起，从而避免突然的局部轮廓变化。 在一个实施例中，通过偏移透镜来激光束被分裂，以获得与具有集中能量分布的激光束获得的多对甚至更小的突起。 脉冲多透镜聚焦激光束可用于纹理衬底，底层或磁性层。 所得到的激光纹理磁记录介质具有改进的飞行稳定性，滑动性能和可靠性。

公开(公告)号：WO1997004447A1

公开(公告)日：1997-02-06

申请号：PCT/US1996011818

申请日：1996-07-17

Applicant: SEAGATE TECHNOLOGY, INC.

Inventor： SEAGATE TECHNOLOGY, INC. ,  HWANG, Kuo-Hsing ,  CHEN, Xiaohua ,  KHAZANOV, Alexander, Boris ,  HAFID, Abdellah ,  TAN, Stella ,  NGUYEN, Quy, Cuu

IPC: G11B05/72

CPC classification number: C23C14/0605 ,  G11B5/72 ,  G11B5/8408 ,  Y10S428/90 ,  Y10T428/30

Abstract: A magnetic disc (12) for use in a magnetic disc drive (20) is provided. The magnetic disc (12) includes a recording surface (36) wherein the recording surface (36) includes a dual phase carbon overcoat (42). The dual phase carbon overcoat (42) includes an amorphous carbon film (70) sputtered on a magnetic layer (40). A doped amorphous carbon film (72) is sputtered on the amorphous carbon film (70). The dual phase carbon overcoat (42) has demonstrated improved hardness, reduced stiction and superior corrosion resistance over the prior art. A method of manufacturing the magnetic disc (12) is also provided. The method includes providing a sputtering appratus (50) having a process chamber (52), providing a partially manufactured magnetic disc (68) having a magnetic layer (40) thereon, placing the partially manufactured magnetic disc (68) within the process chamber (52), sputtering an amorphous carbon film (70) on the magnetic layer (40), and sputtering a doped amorphous carbon film (72) on the amorphous carbon film (70). The process reduces throughput inefficiencies due to down time cleaning and avoids carbon induced damage to the discs (12).

Abstract translation: 提供一种用于磁盘驱动器（20）的磁盘（12）。 磁盘（12）包括记录表面（36），其中记录表面（36）包括双相碳外涂层（42）。 双相碳外涂层（42）包括溅射在磁性层（40）上的无定形碳膜（70）。 将掺杂的无定形碳膜（72）溅射在无定形碳膜（70）上。 相对于现有技术，双相碳外涂层（42）具有改进的硬度，降低的粘性和优异的耐腐蚀性。 还提供了一种制造磁盘（12）的方法。 该方法包括提供具有处理室（52）的溅射装置（50），提供其上具有磁性层（40）的部分制造的磁盘（68），将部分制造的磁盘（68）放置在处理室（ 52），在所述磁性层（40）上溅射无定形碳膜（70），并在所述无定形碳膜（70）上溅射掺杂的无定形碳膜（72）。 该过程由于停机时间清洁而降低了生产效率低下，并避免了碳导致的盘损坏（12）。