REGULATED INVERTING POWER SUPPLY
    12.
    发明申请
    REGULATED INVERTING POWER SUPPLY 审中-公开
    调节逆变电源

    公开(公告)号:WO1995017036A1

    公开(公告)日:1995-06-22

    申请号:PCT/US1993012178

    申请日:1993-12-14

    CPC classification number: H02M3/07

    Abstract: An inverting power supply (10) having first and second charging capacitors (22, 24) that are alternately connected to a positive power source (12) and a negative output terminal (18) which is to be maintained at a negative voltage with respect to a common ground for the power source and the power supply. Switches (34, 36) connect a positive plate of each charging capacitor to the power supply positive terminal during alternate half cycles of a two-phase clock (20) and charge is bled from the positive plates by switching transistors (46, 50) during the other half cycle to enable charge to be transferred via diodes (52, 54) from the negative output terminal to negative plate of the charging capacitors during the other half cycle. The base-emitter currents of the switching transistors are controlled by a charge transfer control circuit (56) in relation to the voltage at the negative output terminal to regulate the voltage at the negative output terminal by controlling the rate of charge transfer to the negative output terminal. Additional regulation can be provided by a current control circuit (106) that adjusts the switching transistor base-emitter currents in relation to the collector currents of the switching transistors.

    Abstract translation: 具有交替连接到正电源(12)和负输出端子(18)的第一和第二充电电容器(22,24)的反相电源(10),其被保持在相对于 电源和电源的共同点。 开关(34,36)在两相时钟(20)的交替半周期期间将每个充电电容器的正极板连接到电源正极端子,并且在正极板中通过开关晶体管(46,50)从正极板充电, 另一个半周期,以在另一个半周期期间使电荷通过二极管(52,54)从负输出端子传输到充电电容器的负极板。 开关晶体管的基极 - 发射极电流通过电荷转移控制电路(56)相对于负输出端子处的电压来控制,以通过控制向负输出的电荷转移速率来调节负输出端子处的电压 终奌站。 电流控制电路(106)可以提供额外的调节,电流控制电路(106)相对于开关晶体管的集电极电流调节开关晶体管基极 - 发射极电流。

    AMORPHOUS PERMALLOY FILMS AND METHOD OF PREPARING THE SAME
    13.
    发明申请
    AMORPHOUS PERMALLOY FILMS AND METHOD OF PREPARING THE SAME 审中-公开
    非晶合金薄膜及其制备方法

    公开(公告)号:WO1995016268A1

    公开(公告)日:1995-06-15

    申请号:PCT/US1993011968

    申请日:1993-12-09

    CPC classification number: G11B5/3903 G01R33/09 H01F10/131 H01F41/18

    Abstract: A magnetically permeable material comprising a substantially amorphous permalloy film is disclosed. The substantially amorphous permalloy film is formed by ion-beam sputtering. The substantially amorphous permalloy film exhibits improved output amplitude and noise characteristics.

    Abstract translation: 公开了一种包含基本上非晶的坡莫合金膜的导磁材料。 通过离子束溅射形成基本上非晶的坡莫合金膜。 基本上非晶的坡莫合金薄膜表现出改进的输出振幅和噪声特性。

    METHOD FOR COMPENSATING FOR THE UNIQUE MECHANICAL AND ELECTRICAL CHARACTERISTICS OF A DISC DRIVE
    14.
    发明申请
    METHOD FOR COMPENSATING FOR THE UNIQUE MECHANICAL AND ELECTRICAL CHARACTERISTICS OF A DISC DRIVE 审中-公开
    用于补偿磁盘驱动器的独特机械和电气特性的方法

    公开(公告)号:WO1991000594A1

    公开(公告)日:1991-01-10

    申请号:PCT/US1990003588

    申请日:1990-06-29

    Abstract: A disc drive wherein at least two outer tracks of the disc in a region (15) beyond the defined track 0 are used to store the drive operating microprogram, and/or manufacturing test program, and/or specific electrical, mechanical and magnetic parameters and media defect information. This data can be read from these outer tracks of the disc during initialization of the disc drive, or during seek operations of the drive to immediately adjust the positioning of the read/write head. It allows the disc drive to react to microprogram problems without changing either the mask ROM or an EPROM supplied. The microprogram is read onto the drive over the I/O interface.

    Abstract translation: 一种盘驱动器,其中超过定义的轨道0的区域(15)中的盘的至少两个外轨迹用于存储驱动操作微程序,和/或制造测试程序,和/或特定的电,机械和磁参数,以及 媒体缺陷信息。 在盘驱动器的初始化期间或在驱动器的搜索操作期间可以从盘的这些外部轨道读取该数据,以便立即调整读/写头的定位。 它允许磁盘驱动器对微程序问题做出反应,而不需要更改掩模ROM或提供的EPROM。 微程序通过I / O接口读取到驱动器上。

    DATA RETRIEVAL CHANNEL DETECTION AND COMPENSATION
    15.
    发明申请
    DATA RETRIEVAL CHANNEL DETECTION AND COMPENSATION 审中-公开
    数据检索通道检测和补偿

    公开(公告)号:WO1999022287A2

    公开(公告)日:1999-05-06

    申请号:PCT/US1998022715

    申请日:1998-10-27

    CPC classification number: G11B20/10009 G11B5/012 G11B5/09

    Abstract: A digital peak detector for detecting those peak member values of either polarity in a digitized values sequence having magnitudes greater than, or in some instances equal to, each of those in a selected number of neighboring member values which can selectively be required to be of the same polarity as the corresponding peak value, subject to exceeding both a selected absolute threshold and a selected multiple of a subsequent sequence member value. A peak value and polarity notifier provides a selected one of two alternative indicator pairs of signals of selectable time durations to indicate the occurrences of peak value members and the polarity thereof. The magnitudes of future member values in the digitized values sequence obtained from an analog signal are adjusted by varying the magnitude of that signal based on a magnitude average of selectively weighted differences between a number of past peak member values and a desired value. These differences available for use in this averaging are subject to being excluded if associated with known system operation problems but other member values are subject to being included if too much time has elapsed since the previous difference value based adjustment. Magnitude asymmetries between peak member values of different polarities in the digitized values sequence are compensated by adding and subtracting therefrom based on a magnitude average of these differences after those associated with member values in the digitized values sequence of one polarity are negated and all in the average are selectively weighted. Value based on these magnitude averages are stored for selective use as initial average values for the corresponding next such averaging. Magnitudes over time of the digitized values sequence related to paired zones along tracks in the magnetic medium disk in a magnetic data storage and retrieval system are accumulated and subtracted from one another for each pair. The accumulated difference results for each pair are used as an error signal for estimating the lateral position error with respect to the track of the "read head" in retrieving information from the stored magnetic data on the disk.

    Abstract translation: 一种数字峰值检测器,用于检测具有大于或在某些情况下等于每个选定数量的相邻成员值中的每一个的数字化值序列中的任一极性的峰值成员值,其可选择性地被要求为 与相应的峰值相同的极性,超过选定的绝对阈值和随后的序列成员值的选定倍数。 峰值和极性通知器提供可选择的持续时间的两个替代的信号指示对之一,以指示峰值成员的出现及其极性。 根据模拟信号获得的数字化值序列中的未来成员值的大小,通过基于过去的峰值成员值和期望值之间的选择性加权差异的幅度平均值来改变该信号的幅度来调整。 如果与已知的系统操作问题相关联,则可以将这些平均值中可用的这些差异排除在外,如果从先前的基于差值的调整后经过了太多时间,则可以包括其他成员值。 在数字化值序列中的不同极性的峰值成分值之间的幅度不对称性通过在与一个极性的数字化值序列中的成员值相关联的那些之后基于这些差异的幅度平均值相加和相减来补偿,并且全部在平均值 被选择性地加权。 基于这些幅度平均值的值被存储用于选择性地用作相应的下一个平均值的初始平均值。 与磁数据存储和检索系统中的磁性介质盘中沿着磁道的成对区域相关的数字化值序列随时间的幅度被累积并相互减去。 每个对的累积差分结果用作用于在从磁盘上存储的磁数据中检索信息时相对于“读取头”的轨迹估计横向位置误差的误差信号。

    CONICAL HYDRODYNAMIC BEARING WITH TWO INDEPENDENT CIRCULATION PATHS
    17.
    发明申请
    CONICAL HYDRODYNAMIC BEARING WITH TWO INDEPENDENT CIRCULATION PATHS 审中-公开
    具有两个独立循环曲线的CONICAL HYDRODYNMIC轴承

    公开(公告)号:WO1998028550A1

    公开(公告)日:1998-07-02

    申请号:PCT/US1997023928

    申请日:1997-12-19

    Abstract: A hydrodynamic bearing having a fixed central shaft (108) carrying first and second conical bearings (104, 106) separated by a central circular shaft portion of the shaft and lubricated by first and second circulation paths (101, 102) circulating through a central reservoir (120) in the shaft. The first and second conical bearings taper outwardly from the central shaft. Further, the hydrodynamic bearing includes a sleeve (110) which rotates relative to the fixed shaft, the sleeve includes a first concave bearing surface (113) rotatably overlying a convex surface of the first conical bearing and forming a first gap in the first circulation path. The sleeve further includes a second concave bearing surface (115) rotatably overlying a convex surface of the second conical bearing and forming a first gap in the second circulation path. The reservoir contains lubricating fluid which communicates with the first and second convex bearings through second and third bores extending from the reservoir toward the radially extending surfaces.

    Abstract translation: 一种流体动力轴承,其具有固定的中心轴(108),承载第一和第二锥形轴承(104,106),所述第一和第二锥形轴承(104,106)由所述轴的中心圆形轴部分分隔并且被第一和第二循环路径(101,102)润滑,所述第一和第二循环路径循环通过中央容器 (120)在轴中。 第一和第二锥形轴承从中心轴向外变圆。 此外,流体动力轴承包括相对于固定轴旋转的套筒(110),套筒包括可旋转地覆盖第一锥形轴承的凸形表面并在第一循环路径中形成第一间隙的第一凹形支承表面(113) 。 套筒还包括可旋转地覆盖第二锥形轴承的凸形表面并在第二循环路径中形成第一间隙的第二凹形支承表面(115)。 储存器包含润滑流体,其通过从贮存器向径向延伸的表面延伸的第二和第三孔与第一和第二凸起轴承连通。

    LEADING EDGE SLIDER MICROACTUATOR
    18.
    发明申请
    LEADING EDGE SLIDER MICROACTUATOR 审中-公开
    领先的滑块微处理器

    公开(公告)号:WO1998025264A1

    公开(公告)日:1998-06-11

    申请号:PCT/US1997019816

    申请日:1997-10-30

    CPC classification number: G11B21/085 G11B5/5552 G11B21/08 G11B21/106 G11B21/24

    Abstract: A disc drive (10) having an actuator arm (16) to support a slider (24) carrying a transducing head (56) adjacent a selected data track (34) of a disc (30) having a plurality of concentric data tracks (34) includes a microactuator (54) on a leading edge surface (60) of the slider (24) to effect fine positioning of the transducing head (56) with respect to the selected track (34). The microactuator (54) includes a spatial region (63, 65) on the leading edge surface (60) of the slider (24). A microactuator element (72, 74, 92, 94, 142, 172) spans the spatial region (63, 65) and is responsive to a voltage to selectively expand and contract, thereby bending to alter the position of the slider (24) and the transducing head (56).

    Abstract translation: 具有致动器臂(16)的盘驱动器(10),用于支撑与盘(30)的选定数据轨道(34)相邻的传感头(56)的滑动器(24),所述数据轨道(30)具有多个同心数据轨道(34) )包括在滑块(24)的前缘表面(60)上的微致动器(54),以实现换能头(56)相对于所选择的轨道(34)的精细定位。 微型致动器(54)包括在滑块(24)的前缘表面(60)上的空间区域(63,65)。 微致动器元件(72,74,92,144,142,172)跨越空间区域(63,65)并且响应于电压以选择性地膨胀和收缩,从而弯曲以改变滑块(24)的位置和 换能头(56)。

    DISC HEAD SLIDER HAVING SURFACE DISCONTINUITIES TO MINIMIZE FLY STICTION
    19.
    发明申请
    DISC HEAD SLIDER HAVING SURFACE DISCONTINUITIES TO MINIMIZE FLY STICTION 审中-公开
    具有表面不连续性的DISC头滑块以最小化飞行

    公开(公告)号:WO1998021716A1

    公开(公告)日:1998-05-22

    申请号:PCT/US1997000346

    申请日:1997-01-13

    Abstract: A slider (36) supports a transducer (44) proximate to a lubricated recording medium (16). The slider (36) includes a slider body, a raised rail (38, 40) formed on the slider body and a fluid flow pattern across the slider body which has at least one stagnant flow region (70, 72, 74, 76). A surface discontinuity (80, 82, 84, 86, 92, 102, 110, 112, 114, 116, 122, 130, 138) is formed on the slider body and is positioned within the stagnant flow region (70, 72, 74, 76) to inhibit lubrication (78, 79) collected within the stagnant flow region (70, 72, 74, 76) from migrating to the raised rail (38, 40).

    Abstract translation: 滑块(36)支撑靠近润滑的记录介质(16)的换能器(44)。 滑块(36)包括滑块体,形成在滑块主体上的升高轨道(38,40)和穿过滑块主体的流体流动图案,其具有至少一个停滞流动区域(70,72,74,76)。 表面不连续部分(80,82,84,86,92,102,110,112,114,116,122,130,138)形成在滑块体上并且位于停滞流动区域(70,72,74)内 ,76)以阻止收集在停滞流动区域(70,72,74,76)内的润滑(78,79)不迁移到升高的轨道(38,40)。

    SYSTEM FOR IMPLEMENTING RUN LENGTH LIMITED CODES
    20.
    发明申请
    SYSTEM FOR IMPLEMENTING RUN LENGTH LIMITED CODES 审中-公开
    执行运行长度有限编码的系统

    公开(公告)号:WO1998006181A1

    公开(公告)日:1998-02-12

    申请号:PCT/US1997013650

    申请日:1997-08-05

    CPC classification number: G11B20/1426 G06T9/005 G11B2020/1446 H03M5/145

    Abstract: An apparatus encodes data blocks into code blocks, each code block containing more symbols than its respective data block. The apparatus includes a data block latch (30) for receiving individual data blocks and for dividing each data block into two sub-blocks. An encoder (32) receives one of the data sub-blocks and encodes the first data sub-block as a code sub-block. An interleaver (34, 36), coupled to the encoder (32) and the data block latch (30), combines the code sub-block with the second data sub-block to produce a code block, such that when the code blocks are concatenated with each other to produce a string of code symbols no more than five consecutive occurrences of a particular code symbol are present in the string of code symbols.

    Abstract translation: 一种装置将数据块编码为码块,每个码块包含比其相应数据块更多的码元。 该装置包括用于接收各个数据块并用于将每个数据块划分成两个子块的数据块锁存器(30)。 编码器(32)接收数据子块中的一个,并将第一数据子块编码为码子块。 耦合到编码器(32)和数据块锁存器(30)的交织器(34,36)将代码子块与第二数据子块组合以产生代码块,使得当代码块为 相互串联以产生一串代码符号,在代码符号串中不存在不超过五个特定代码符号的连续出现次数。

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