公开(公告)号：WO1998005444A1

公开(公告)日：1998-02-12

申请号：PCT/US1997001977

申请日：1997-02-06

Applicant: SEAGATE TECHNOLOGY, INC.

Inventor： SEAGATE TECHNOLOGY, INC. ,  CLARK, Wesley, R. ,  ADDY, Roger, A. ,  MURTHY, Samnathan ,  JENNINGS, David

IPC: B21D17/04

CPC classification number: B21D17/04

Abstract: Apparatus (8) for forming grooves in the surface of an article includes a cage (10) which has a circular cage wall with an annular pattern of holes (16). A plurality of spherical balls (14) having a diameter greater than the cage wall thickness are each rotatably disposed in a respective hole of the cage wall. A pin (12) located within the cage has a circumferential groove (18) in a plane coincident with the plurality of spherical balls and holes in the cage wall so that the pin holds the balls in the groove, the balls protruding through the cage wall and engaging the surface of a workpiece to be grooved so that the balls roll in the groove in the pin and, with movement of the workpiece and apparatus, cause grooves to be formed in the interior surface of the workpiece. The apparatus includes an object (24, 26) at either end of the pin for holding the pin against translational movement relative to the cage so that only rotational movement is imparted to the pin by rotation of the workpiece. To carry out the process of grooving the article (41), a spindle (46) rotates (arrow 52) the workpiece while the apparatus (8) is translated through the bore.

Abstract translation: 用于在物品表面形成凹槽的装置（8）包括具有圆形笼壁的保持架（10），该保持架具有环形图案的孔（16）。 具有大于笼壁厚度的多个球形球体（14）各自可旋转地设置在保持架壁的相应孔中。 位于保持架内的销（12）在与保持架壁中的多个球形球和孔相重合的平面中具有圆周槽（18），使得销将球保持在槽中，球穿过保持架壁 并使待切削的工件的表面接合，使得滚珠在销中的槽中滚动，并且随着工件和装置的移动，在工件的内表面中形成凹槽。 该装置包括在销的任一端处的物体（24,26），用于保持销相对于保持架的平移运动，使得仅通过工件的旋转赋予销的旋转运动。 为了执行切割物品（41）的过程，当设备（8）通过孔平移时，主轴（46）旋转（箭头52）工件。

公开(公告)号：WO1997016829A1

公开(公告)日：1997-05-09

申请号：PCT/US1996017229

申请日：1996-10-25

Applicant: SEAGATE TECHNOLOGY, INC. ,  RUDD, Gregory, I. ,  KHAN, Raquib, U. ,  PARSONEAULT, Norbert, S. ,  MURTHY, Samnathan

Inventor： SEAGATE TECHNOLOGY, INC.

IPC: G11B19/00

CPC classification number: C10M169/04 ,  C10M101/02 ,  C10M105/36 ,  C10M105/38 ,  C10M107/02 ,  C10M107/38 ,  C10M111/04 ,  C10M125/22 ,  C10M129/10 ,  C10M129/26 ,  C10M129/68 ,  C10M133/06 ,  C10M133/12 ,  C10M133/44 ,  C10M135/10 ,  C10M135/18 ,  C10M135/22 ,  C10M135/28 ,  C10M135/36 ,  C10M137/04 ,  C10M137/08 ,  C10M137/10 ,  C10M137/105 ,  C10M171/00 ,  C10M2201/065 ,  C10M2201/066 ,  C10M2201/084 ,  C10M2203/1006 ,  C10M2203/1025 ,  C10M2203/1045 ,  C10M2203/1065 ,  C10M2203/1085 ,  C10M2205/00 ,  C10M2205/02 ,  C10M2205/0206 ,  C10M2207/023 ,  C10M2207/026 ,  C10M2207/027 ,  C10M2207/10 ,  C10M2207/28 ,  C10M2207/281 ,  C10M2207/282 ,  C10M2207/2825 ,  C10M2207/283 ,  C10M2207/2835 ,  C10M2207/2855 ,  C10M2207/286 ,  C10M2207/288 ,  C10M2207/34 ,  C10M2213/00 ,  C10M2213/023 ,  C10M2213/04 ,  C10M2213/043 ,  C10M2213/06 ,  C10M2213/0606 ,  C10M2213/0623 ,  C10M2215/04 ,  C10M2215/06 ,  C10M2215/064 ,  C10M2215/065 ,  C10M2215/066 ,  C10M2215/067 ,  C10M2215/068 ,  C10M2215/22 ,  C10M2215/221 ,  C10M2215/223 ,  C10M2215/225 ,  C10M2215/226 ,  C10M2215/26 ,  C10M2215/30 ,  C10M2219/044 ,  C10M2219/066 ,  C10M2219/068 ,  C10M2219/082 ,  C10M2219/083 ,  C10M2219/086 ,  C10M2219/10 ,  C10M2219/102 ,  C10M2219/104 ,  C10M2219/106 ,  C10M2219/108 ,  C10M2223/04 ,  C10M2223/041 ,  C10M2223/042 ,  C10M2223/043 ,  C10M2223/045 ,  C10M2223/047 ,  C10N2210/03 ,  C10N2220/02 ,  C10N2240/00 ,  C10N2240/02 ,  C10N2240/22 ,  C10N2240/30 ,  C10N2240/50 ,  C10N2240/52 ,  C10N2240/54 ,  C10N2240/56 ,  C10N2240/58 ,  C10N2240/60 ,  C10N2240/66 ,  F16C33/109 ,  F16C2370/12 ,  G11B19/2009 ,  G11B19/2036 ,  H02K5/1677

Abstract: A disc drive data storage system (10) according to the present invention includes a housing (12), a central axis (80), a stationary member (34) which is fixed with respect to the housing (12) and coaxial with the central axis (80), and a rotatable member (36) which is rotatable about the central axis (80) with respect to the stationary member (34). A stator (38) is fixed with respect to the housing (12). A rotor (70) is supported by the rotatable member (36) and is magnetically coupled to the stator (38). At least one data storage disc (16) is attached to and is coaxial with the rotatable member (36). A hydro bearing (37) interconnects the stationary member (34) and the rotatable member (36) and includes a lubrication fluid (84) comprising a blend of a base fluid and a shear resistant, polymer viscosity index improver.

Abstract translation: 根据本发明的盘驱动器数据存储系统（10）包括壳体（12），中心轴线（80），固定构件（34），其相对于壳体（12）固定并与中心轴线 以及可绕所述中心轴线（80）相对于所述固定构件（34）旋转的可旋转构件（36）。 定子（38）相对于壳体（12）固定。 转子（70）由可旋转构件（36）支撑并且磁耦合到定子（38）。 至少一个数据存储盘（16）附接到可旋转构件（36）并且与可旋转构件（36）同轴。 液压轴承（37）将固定构件（34）和可旋转构件（36）互连，并且包括润滑流体（84），其包括基础流体和抗剪切聚合物粘度指数改进剂的共混物。

公开(公告)号：WO1997016826A1

公开(公告)日：1997-05-09

申请号：PCT/US1995014225

申请日：1995-11-03

Applicant: SEAGATE TECHNOLOGY, INC. ,  GAO, Chuan ,  MASSEY, Darrin

Inventor： SEAGATE TECHNOLOGY, INC.

IPC: G11B05/84

CPC classification number: G11B5/8404 ,  C23C14/541

Abstract: A process for fabricating a magnetic data storage medium includes formation of a controlled texture, either over an annular transducing head contact area or the entire surface of a substrate. The texture layer is formed by vacuum deposition of a texturing material onto a smooth surface of a non-magnetic substrate. The texturing material has a surface energy greater than that of the substrate, and the texturing material and substrate material have different linear coefficients of thermal expansion. Just before deposition of the texture layer, the substrate is heated to a temperature of 200 - 600 DEG C, then allowed to cool during texture layer deposition. The substrate and texture layer contract at different rates as they cool, inducing mechanical stresses within the texture layer sufficient to plastically deform the texture layer, creating multiple dome-like bumps. Subsequent thin film layers, including an underlayer, a magnetic recording layer and a protective cover layer, have uniform thicknesses and tend to replicate the texture layer topography. The resulting medium performs well under CSS testing at flying heights of less than 1.0 microinch, and exhibits excellent corrosive resistance when the substrate is formed of glass, glass ceramic or quartz. The process can be performed on all conventional types of substrates, including aluminum nickel-phosphorous substrates.

Abstract translation: 用于制造磁数据存储介质的方法包括在环形转换头接触区域或基底的整个表面上形成受控质地。 纹理层通过将纹理材料真空沉积到非磁性基底的光滑表面上而形成。 纹理材料的表面能大于衬底的表面能，并且纹理材料和衬底材料具有不同的线性热膨胀系数。 在沉积纹理层之前，将衬底加热到​​200-600℃的温度，然后在纹理层沉积期间冷却。 衬底和纹理层在冷却时以不同的速率收缩，导致纹理层内的机械应力足以使纹理层塑性变形，形成多个圆顶状凸起。 随后的薄膜层，包括底层，磁记录层和保护覆盖层，具有均匀的厚度，并且倾向于复制纹理层的形貌。 所得到的介质在飞行高度小于1.0微英寸的CSS测试下表现良好，并且当基底由玻璃，玻璃陶瓷或石英形成时，表现出优异的耐腐蚀性。 该方法可以在所有常规类型的基底上进行，包括铝镍磷基底。

公开(公告)号：WO1997006624A1

公开(公告)日：1997-02-20

申请号：PCT/US1996012680

申请日：1996-08-02

Applicant: SEAGATE TECHNOLOGY, INC. ,  FREDRICKSON, Lisa

Inventor： SEAGATE TECHNOLOGY, INC.

IPC: H04L25/497

CPC classification number: H04L25/497 ,  G11B20/10009 ,  G11B20/1426 ,  H03M5/145

Abstract: An encoder for matched spectral null binary codes is described, particularly for 12B/15B codes. The codeword trellis is partitioned into two or more subtrellises, and each subtrellis is encoded separately. The codeword is the concatenation of the codewords produced by the subtrellises. Some valid sequences have to be excluded, in order to ensure that all concatenations are valid, but the storage requirements are greatly reduced.

Abstract translation: 描述了用于匹配频谱零二进制码的编码器，特别是对于12B / 15B码。 码字网格划分成两个或多个子树，每个子树被单独编码。 码字是由子突击产生的码字的级联。 必须排除一些有效的序列，以确保所有级联都有效，但存储要求大大降低。

公开(公告)号：WO1996041342A1

公开(公告)日：1996-12-19

申请号：PCT/US1995006255

申请日：1995-06-07

Applicant: SEAGATE TECHNOLOGY, INC. ,  VOLZ, LeRoy, Allen ,  VARANASI, Chandra, Chuda ,  STONE, Dennis, Carl

Inventor： SEAGATE TECHNOLOGY, INC.

IPC: G11B21/08

CPC classification number: G11B27/3027 ,  G11B21/083

Abstract: A track address pattern embedded in the servo zones of a storage medium for representing a track address identification having a binary bit length "n". The track addresses pattern embedded in the medium is recoded from a Gray-code representation of the track address identification and has a code rate of n/(n+1), where n >/= 2. The recoded track address pattern (or codeword) is modeled from a Gray-code representation wherein a plurality of bit cells corresponding to a track address of the data storage apparatus are recoded to include a parity bit selected to maintain a selected parity for the track address pattern. More particularly, when a "1" occurs in the same bit cell location in two adjacent track address patterns, then the parity on "1"s up until the same bit cell location is the same for both of the m and the (m-1) track address patterns and for the m and the (m+1) track address patterns. Furthermore, the codewords provide that the bit cells of an m track address differ from the bit cells of an (m-1) track address in exactly two bit cell locations, and that the bit cells of an m track address differ from the bit cells of an (m+1) track address in exactly two bit cell locations. One of the positions in which the neighboring codewords differ is the parity bit position.

Abstract translation: 嵌入在用于表示具有二进制位长度“n”的轨道地址标识的存储介质的伺服区中的轨道地址模式。 从轨道地址识别的格雷码表示重新编码介质中嵌入的轨道地址模式，并且具有n /（n + 1）码率，其中n≥2。重新编码的轨道地址模式（或码字 ）由格雷码表示建模，其中对应于数据存储装置的轨道地址的多个比特单元被重新编码为包括被选择以维持所选择的奇偶校验的轨道地址模式的奇偶校验位。 更具体地，当在两个相邻轨道地址模式中的相同比特单元位置中出现“1”时，在“1”之前的奇偶校验直到相同位单元位置对于m和 （m-1）个轨道地址模式，以及第m和第（m + 1）个轨道地址模式。 此外，码字提供了第m个磁道地址的位单元不同于正好两个位单元位置的第（m-1）个磁道地址的位单元，并且m < 轨道地址与正好两个位单元位置的第（m + 1）个轨道地址的位单元不同。 相邻码字不同的位置之一是奇偶校验位位置。

公开(公告)号：WO1996036963A1

公开(公告)日：1996-11-21

申请号：PCT/US1996006854

申请日：1996-05-14

Applicant: SEAGATE TECHNOLOGY, INC. ,  MYKKANEN, C., Fred ,  AMBROSE, S., Ross

Inventor： SEAGATE TECHNOLOGY, INC.

IPC: G11B05/48

CPC classification number: G11B5/4853

Abstract: An instrument (12) separated from ground by a supradissipative resistance and having a surface (26) which is placed in electrical contact with a magnetic head of a disc drive assembly includes an electrically conductive receptacle (134) engaging and electrically connected proximate to the surface (26) of the instrument (12). The electrically conductive receptacle (134) is electrically coupled to ground for grounding the instrument (12) to prevent damage to the magnetic head caused by static discharge from the instrument (12).

Abstract translation: 由抵消电阻与地面分离并且具有与磁盘驱动器组件的磁头电接触的表面（26）的仪器（12）包括导电插座（134），其接合并电连接到表面 （26）。 导电插座（134）电耦合到接地用于接地仪器（12），以防止由仪器（12）的静电放电引起的对磁头的损坏。

公开(公告)号：WO1996029635A2

公开(公告)日：1996-09-26

申请号：PCT/US1996003729

申请日：1996-03-19

Applicant: SEAGATE TECHNOLOGY, INC.

Inventor： SEAGATE TECHNOLOGY, INC. ,  EASTBURN, Lindsey ,  MASS, Leon

IPC: G05B19/418

CPC classification number: G05B19/41855 ,  G05B19/4184 ,  Y02P90/14 ,  Y02P90/18 ,  Y02P90/185

Abstract: A control system for a film deposition apparatus having a plurality of processing chambers. The control system includes a plurality of control processors, each of the plurality of processors including a memory, being coupled to a subset of the plurality of chambers and controlling processing in said subset of the plurality of chambers. Each processor includes a data structure, provided in said memory, having configuration data for said plurality of processing chambers, and control routines for controlling processing in the apparatus. In a second aspect, the system includes a facility for determining the position of the substrate in the system. The transport system of the deposition apparatus includes hardware position sensors which indicate the presence or absence of a subsrate at said sensor. The facility determines the position of substrates when the output of one or more of the hardware sensors is unavailable. The facility determines substrate position based on the output of one or more other sensors which provide a known position of the substrate, encoder data, and the rate of movement of the substrate at each transport stage of the system.

Abstract translation: 一种用于具有多个处理室的成膜装置的控制系统。 控制系统包括多个控制处理器，多个处理器中的每一个包括存储器，耦合到多个室的子集，并控制多个室的所述子集中的处理。 每个处理器包括在所述存储器中提供的具有用于所述多个处理室的配置数据的数据结构以及用于控制设备中的处理的控制例程。 在第二方面，该系统包括用于确定系统中衬底的位置的设备。 沉积设备的输送系统包括硬件位置传感器，其指示在所述传感器处是否存在下降速率。 当一个或多个硬件传感器的输出不可用时，该设备确定基板的位置。 该设备基于在系统的每个传送阶段提供衬底的已知位置，编码器数据和衬底的移动速率的一个或多个其它传感器的输出来确定衬底位置。

公开(公告)号：WO1996008011A1

公开(公告)日：1996-03-14

申请号：PCT/US1994010017

申请日：1994-09-06

Applicant: SEAGATE TECHNOLOGY, INC. ,  KUEN, Chi-Foun ,  PACEK, Randall, Lee

Inventor： SEAGATE TECHNOLOGY, INC.

IPC: G11B20/12

CPC classification number: G11B20/12 ,  G11B27/3027 ,  G11B2220/20

Abstract: A sectoring circuit (22) locates data storage sectors in data tracks (60, 62) on a rotating disc (24) of a data storage device (20) having a transducer head (30) positioned by a servo system (44, 36) relative to the rotating disc (24) for writing to and reading from the sectors. The servo system (44, 36) provides servo error signals in response to the transducer head (30) passing over servo patterns (64) embedded in the rotating disc (24). The sectors are positioned in data wedges (70-80, 82-92) extending between respective pairs of servo patterns. A header (66, 68, 93) is stored on the rotating disc (24) and is associated with a data wedge. The sectoring circuit (22) locates the header in reference to a servo pattern to receive and store information from the header including an identification field identifying the header and offset fields indicating a distribution of bytes for sectors split between data wedges. Control circuitry (176) locates the sectors based on values of the identification field and the offset fields.

Abstract translation: 分区电路（22）将数据存储扇区定位在具有由伺服系统（44,36）定位的换能器头（30）的数据存储装置（20）的旋转盘（24）上的数据轨道（60,62）中， 相对于用于向扇区写入和读取的旋转盘（24）。 伺服系统（44,36）响应于穿过旋转盘（24）中的伺服模式（64）的传感器头（30）提供伺服误差信号。 这些扇区位于在各对伺服模式之间延伸的数据楔（70-80,82-92）中。 头部（66,68,93）被存储在旋转盘（24）上并且与数据楔相关联。 扇区电路（22）参考伺服模式定位头部，以接收和存储来自头部的信息，包括标识头部的标识字段和表示数据楔间分割的扇区的字节分布的偏移字段。 控制电路（176）基于识别字段和偏移字段的值来定位扇区。

公开(公告)号：WO1995035508A1

公开(公告)日：1995-12-28

申请号：PCT/US1994007064

申请日：1994-06-22

Applicant: SEAGATE TECHNOLOGY, INC. ,  SCHULTZ, Allan, E. ,  GEORGE, Peter, K. ,  CALDERON, Arthur ,  BONYHARD, Peter, I. ,  RAMDULAR, Jumna, P. ,  FERNANDEZ-DE-CASTRO, Juan, J. ,  LONGWORTH, Leroy, L.

Inventor： SEAGATE TECHNOLOGY, INC.

IPC: G01R33/09

CPC classification number: G11B5/3932 ,  G01R33/09 ,  G01R33/096

Abstract: A magnetoresistive sensor (10) having permanent magnet stabilization is comprised of a magnetoresistive layer (12), at least one permanent magnet (14a or 14b), and first and second current contacts (16a and 16b). The magnetoresistive layer (12) is comprised of an active sensing region (18) having a first thickness, and at least one under layer region (26a or 26b), with each under layer region (26a or 26b) having a second thickness that is less than the first thickness. Each permanent magnet (14a or 14b) is formed upon an under layer region (26a or 26b) of the magnetoresistive layer (12), and the first and second contacts (16a and 16b) are electrically coupled to the active region (18).

Abstract translation: 具有永磁体稳定性的磁阻传感器（10）包括磁阻层（12），至少一个永磁体（14a或14b）以及第一和第二电流触头（16a和16b）。 磁阻层（12）由具有第一厚度的有源感测区域（18）和至少一个下层区域（26a或26b）组成，每个下层区域（26a或26b）具有第二厚度，其中第二厚度为 小于第一厚度。 每个永磁体（14a或14b）形成在磁阻层（12）的下层区域（26a或26b）上，并且第一和第二触点（16a和16b）电耦合到有源区域（18）。

公开(公告)号：WO1995005660A1

公开(公告)日：1995-02-23

申请号：PCT/US1993007652

申请日：1993-08-13

Applicant: SEAGATE TECHNOLOGY, INC. ,  JABBARI, Iraj ,  HICKOX, Thomas, A. ,  BATTU, Ramgopal

Inventor： SEAGATE TECHNOLOGY, INC.

IPC: G11B17/02

CPC classification number: G11B17/038 ,  G11B17/02

Abstract: Magnetic hard discs are clamped on a disc spacer by integral spacer flanges. The spacer's diameter is slightly larger than the disc interior diameter thereby providing a radial clamping load. The discs are fit onto the spacer either by providing a small gap in the annulus of the spacer ring or by first cooling the spacer. The entire disc spacer and disc assembly is mounted on the drive spindle as a unit. A disc clamp clamps the assembly to a spindle flange by means of a lip on the interior of the spacer. The lip is preferably spaced axially below the top surface of the top most disc so that both the clamp and the clamp's mounting screw can be placed axially below the top surface of the top disc to thereby provide a low profile spindle/disc stack assembly. In another embodiment, the lip has an inclined surface to impart an additional radial load force to the top disc.

Abstract translation: 磁性硬盘通过一体式间隔件法兰夹紧在圆盘垫片上。 间隔件的直径略大于盘内径，从而提供径向夹紧载荷。 通过在间隔环的环形空间中提供小间隙或通过首先冷却间隔件，将盘安装在间隔件上。 整个盘片和盘组件作为一个单元安装在驱动主轴上。 盘式夹具借助于间隔件内部的唇缘将组件夹紧到主轴法兰上。 唇缘优选地在最顶盘的顶表面下方轴向间隔开，使得夹具和夹具的安装螺钉都可以轴向位于顶盘的顶表面下方，从而提供低轮廓的主轴/盘叠组件。 在另一个实施例中，唇缘具有倾斜表面，以向顶盘赋予额外的径向载荷力。