公开(公告)号：US4363056A

公开(公告)日：1982-12-07

申请号：US126024

申请日：1980-02-29

Applicant: Charles M. Riggle ,  Christopher A. Pollard ,  John D. Read

Inventor： Charles M. Riggle ,  Christopher A. Pollard ,  John D. Read

IPC: G11B17/038 ,  G11B23/03 ,  G11B25/04 ,  G11B33/14 ,  G11B5/012

CPC classification number: G11B33/14 ,  G11B17/038 ,  G11B23/0323 ,  G11B25/043

Abstract: A housing (1-10) for a disk (1-12) used in a "Winchester"-type disk mass information storage unit in a data processing system. The housing is symmetrical about the plane of the disk, and supports the disk spindle (2-33) on both sides of the disk. The housing includes two substantially identical members (1-16, 17) fitted together in a clamshell-type arrangement. The housing includes a housing extension (1-26) for receiving and supporting the read/write heads (1-14) and actuator (1-15) therefor from both ends thereof. The members forming the housing are preferably thin walled castings, and may include fins (1-104) to dissipate heat or to enhance the housing's mechanical rigidity.

Abstract translation: 一种在数据处理系统中用于“温彻斯特”型磁盘质量信息存储单元中的盘（1-12）的外壳（1-10）。 壳体与盘的平面对称，并且在盘的两侧支撑盘主轴（2-33）。 壳体包括两个基本相同的构件（1-16,17），它们以蛤壳式布置安装在一起。 壳体包括用于从其两端接收和支撑读/写头（1-14）和致动器（1-15）的壳体延伸部（1-26）。 形成壳体的构件优选是薄壁铸件，并且可以包括散热（或散热）或增强壳体的机械刚度的翅片（1-104）。

公开(公告)号：US4346416A

公开(公告)日：1982-08-24

申请号：US126129

申请日：1980-02-29

Applicant: Charles M. Riggle ,  John D. Read ,  William B. Noe ,  Richard Winfrey ,  Christopher A. Pollard ,  Frank W. Bernett

Inventor： Charles M. Riggle ,  John D. Read ,  William B. Noe ,  Richard Winfrey ,  Christopher A. Pollard ,  Frank W. Bernett

IPC: H02K35/00 ,  G11B5/55 ,  G11B21/02 ,  H01F7/14

CPC classification number: H01F7/14 ,  G11B5/5521

Abstract: A rotary actuator assembly for positioning read/write heads in disk drive mass storage systems. The actuator assembly includes an actuator motor and one or more actuator arms secured thereto. The motor provides rotary motion of the arms, to move the heads. The stator magnet of the motor is an electromagnet wound on an arcuate core; a pair of elongate permanent magnets are attached to the rotor member, for coaction with the stator magnet. The rotor member has a U-shaped cross sectional area in a plane perpendicular to its axis of rotation; the permanent magnets are fixed to the outside, bottom corners of the U and the actuator arms are mounted across the open end of the U. The rotor is of a very small radius, to minimize inertia. The permanent magnets have a flat face facing the stator, with a channel running longitudinally down the middle, to minimize flux density variations in the permanent magnet-coil gap. The rotor balances the arm relative to the rotor's axis. The arms are of a substantially symmetrical tapered truss design, presenting low inertia; each is cantilevered to the rotor by one bolt which is passed through and pulls the arm against the rotors. Additionally, a spirol-type cylindrical spiral spring, received in a slot in the arm, prevents lateral slippage of the arm relative to the rotor. A pair of cantilevered leaf spring crash stops fixed to the stator decelerate the rotor at the ends of its range of travel.

Abstract translation: 用于将读/写头定位在磁盘驱动器大容量存储系统中的旋转致动器组件。 致动器组件包括致动器马达和固定到其上的一个或多个致动器臂。 电机提供臂的旋转运动，以移动头部。 电动机的定子磁体是缠绕在弧形芯上的电磁体; 一对细长永久磁铁连接到转子构件上，用于与定子磁体共同作用。 转子构件在与其旋转轴线垂直的平面中具有U形横截面积; 永磁体被固定到外部，U的底角和致动器臂跨越U的开口端安装。转子具有非常小的半径，以最小化惯性。 永磁体具有面向定子的平坦面，通道沿中间纵向延伸，以最小化永磁体线圈间隙中的通量密度变化。 转子相对于转子的轴平衡臂。 臂具有基本对称的锥形桁架设计，呈现低惯性; 每个通过一个螺栓悬挂在转子上，螺栓穿过并将臂拉向转子。 此外，容纳在臂中的槽中的螺旋形圆柱形螺旋弹簧防止臂相对于转子的侧向滑动。 固定在定子上的一对悬臂弹簧碰撞止动器在其行程范围的末端减速转子。

公开(公告)号：US5016131A

公开(公告)日：1991-05-14

申请号：US343907

申请日：1989-04-26

Applicant: Charles M. Riggle ,  Peter R. Svendsen ,  John D. Read

Inventor： Charles M. Riggle ,  Peter R. Svendsen ,  John D. Read

IPC: G11B5/55

CPC classification number: G11B5/5521

Abstract: A balance-moment head positioner includes a rotor assembly which rotates about a central shaft. The rotor assembly supports at the same axial location a current-carrying coil, arms for the heads, and a counterweight such that the positioner is dynamically balanced with its center of gravity at the center of rotation. The coils are arranged with legs parallel to the central shaft on diametrically opposite sides of the assembly. In addition, the positioner includes magnets and an elongated U-shaped magnetic pole member with ends facing the coils at the same axial location at the arms. Thus the torque developed when current flows through the coil, and a reactive counter-torque developed by the rotating mass coincide, substantially eliminating all torsion in the shaft, and there is no net force on the shaft.

Abstract translation: 平衡头定位器包括围绕中心轴旋转的转子组件。 转子组件在相同的轴向位置处支撑载流线圈，用于头部的臂和配重，使得定位器在其旋转中心处以其重心动态平衡。 线圈布置成与组件的径向相对的两侧平行于中心轴的腿部布置。 此外，定位器包括磁体和细长的U形磁极构件，其端部在臂的相同轴向位置处面对线圈。 因此，当电流流过线圈时产生的转矩和由旋转质量产生的无功反转扭矩基本上消除了轴中的所有扭矩，并且在轴上没有净力。

公开(公告)号：US5377133A

公开(公告)日：1994-12-27

申请号：US866996

申请日：1992-04-07

Applicant: Charles M. Riggle ,  Nersi Nazari

Inventor： Charles M. Riggle ,  Nersi Nazari

IPC: G06F7/02 ,  G06F7/48 ,  H03M13/41 ,  G06F7/38

CPC classification number: H03M13/6502 ,  G06F7/026 ,  G06F7/48 ,  H03M13/4107

Abstract: An improved system and method is provided for enhanced add-compare-select (ACS) implementation which is particularly adapted to time-nesting or over-lapping of the time offsets for add and compare operations. The compare operation is implemented as a sequential bottom-up procedure whereby two numerical quantities are compared by first declaring one of the quantities as a "contingent" smaller or larger quantity. Subsequently, the least significant bits LSBs of the quantities are compared and the earlier contingent designation is retained unless the smaller of the compared bits is found to correspond to the quantity not previously designated as the "contingent" smaller quantity, whereupon the "contingent" designation is transferred to the previously un-designated quantity corresponding to the smaller of the compared bits. The process is iterated until all bit pairs in the compared quantities have been examined and the "contingent" smaller quantity remaining at that point is defined to be the "final" smaller quantity and constitutes the result of the overall compare operation. The enhanced ACS implementation compresses the computation time by almost a factor of two compared to traditional ACS implementations using top-down compare operations, without significantly affecting logic complexity of the system and eliminates the need for tie breaking.

Abstract translation: 提供了一种改进的系统和方法，用于增强加法比较选择（ACS）实现，其特别适用于对于添加和比较操作的时间偏移的时间嵌套或重叠。 比较操作被实现为顺序自下而上的过程，其中通过首先将数量之一声明为“偶然”较小或更大的数量来比较两个数值。 随后，比较数量的最低有效位LSB，并且保留较早的或有名称，除非发现较小的比较位对应于先前未被指定为“或有”较小量的量，因此“或有”指定 被转移到对应于较小比较的比特的先前未指定的数量。 迭代该过程直到已经检查了所比较的数量中的所有位对，并且在该点处剩余的“偶然”较小数量被定义为“最终”较小数量，并且构成整体比较操作的结果。 与使用自顶向下比较操作的传统ACS实现相比，增强的ACS实现将计算时间压缩几乎两倍，而不会显着影响系统的逻辑复杂度，并且不需要断开连接。

公开(公告)号：US5134532A

公开(公告)日：1992-07-28

申请号：US607768

申请日：1990-10-30

Applicant: Peter R. Svendsen ,  Charles M. Riggle

Inventor： Peter R. Svendsen ,  Charles M. Riggle

IPC: G11B5/55

CPC classification number: G11B5/5521

Abstract: A disk drive system which has a plurality of disks and a plurality of transducing head positioning across. The arms are mounted about common shaft for independent notation to desired radial position on the disk.

Abstract translation: 一种磁盘驱动器系统，其具有多个盘和跨越的多个换能头。 臂围绕公共轴安装，用于独立符号到盘上期望的径向位置。

公开(公告)号：US5036408A

公开(公告)日：1991-07-30

申请号：US193090

申请日：1988-05-12

Applicant: Michael D. Leis ,  Bruce Leshay ,  Michael Muchnik ,  Satish Rege ,  Charles M. Riggle ,  Lih-Jyh Weng

Inventor： Michael D. Leis ,  Bruce Leshay ,  Michael Muchnik ,  Satish Rege ,  Charles M. Riggle ,  Lih-Jyh Weng

IPC: G11B20/10 ,  G11B5/596 ,  G11B20/12 ,  G11B20/14 ,  G11B27/30

CPC classification number: G11B27/3027 ,  G11B20/1217 ,  G11B5/59633 ,  G11B2020/1282 ,  G11B2220/20

Abstract: A disk drive system provides all required synchronization, positioning, validation, and data functions within each disk sector. All of these functions are provided within two zones, a header section and a data section. The header section includes a preamble, a synchronization character and an address field, as well as servo information for track following. The data section of each sector includes a data preamble, a data synchronization character, a bad sector bit map, the data and data redundancy information. The header section of at least one sector in a track includes a short DC-erase field, a transitionless segment which is used in synchronization. To synchronize a read/write head to the disk, the system first detects the DC-erase field. The system next searches for the header premable and synchronization character. If it finds them within predetermined times, it then looks for a valid sector address to complete the synchronization. If the system does not detect the preamble and synchronization character within the predetermined times, it looks for another DC-erase field and continues the synchronization process. After the preamble and synchronization character are found, the desired sector is located by reading the addresses of the succeeding sectors.

公开(公告)号：US4968985A

公开(公告)日：1990-11-06

申请号：US202882

申请日：1988-06-06

Applicant: Charles M. Riggle ,  Lih-Jyh Weng

Inventor： Charles M. Riggle ,  Lih-Jyh Weng

IPC: G06F3/05 ,  G11B20/10 ,  G11B20/14 ,  G11B20/18

CPC classification number: G11B20/10212 ,  G11B20/10037 ,  G11B20/1426 ,  G11B20/18

Abstract: A data demodulator assigns a binary value to the signal recorded in a transition cell based on the amplitude of the signal in the transition cell, the amplitudes of the signal in adjacent transition cells and system experience in categorizing how recording non-linearities and system noise effect the signals. The demodulator samples a selected number of times the recorded signal in the transition cell for which a binary value is to be determined and the recorded signal in a selected number of transition cells adjacent to that cell. It then converts the amplitude of each of the signal samples to a digital symbol. Next, it concatenates portions of the digital symbols to form an interpretation word. It uses this word to enter a stored lookup table which contains binary values, and assigns to the transition cell signal the binary value associated with the word. The table associates a value with a particular word or group of words based on system experience and the demodulation of known signals into interpretation words. The binary values assigned to a number of cells may be combined to form a code word which may be decoded and corrected using soft decoding techniques.

公开(公告)号：US4622516A

公开(公告)日：1986-11-11

申请号：US505047

申请日：1983-06-16

Applicant: Patrick L. Hearn ,  Charles M. Riggle ,  Shyam C. Parikh ,  Kenneth F. Veseskis

Inventor： Patrick L. Hearn ,  Charles M. Riggle ,  Shyam C. Parikh ,  Kenneth F. Veseskis

IPC: G01P3/52 ,  G01P3/46 ,  G11B5/55 ,  G11B21/08

CPC classification number: G01P3/465 ,  G11B5/5521

Abstract: A magnetic tachometer for generating a signal as a function of the velocity of a transducer positioning arm in a disk drive. The tachometer is formed by a pair of fixed parallel coils separated by a distance sufficient to allow a magnet, attached to a counterbalance portion of the rotary positioning arm, to move therebetween and thus to generate a voltage as a function of the velocity of the magnet. The coils are each wound over a thin armature member which is saturated by the magnet's magnetic field and they are differentially coupled to produce common mode rejection.

Abstract translation: 用于产生作为盘驱动器中的换能器定位臂的速度的函数的信号的磁转速计。 转速计由一对固定的平行线圈形成，所述一对固定的平行线圈被隔开一定距离，该距离足以允许安装在旋转定位臂的平衡部分上的磁体在其间移动，从而产生作为磁体速度的函数的电压 。 线圈各自卷绕在被磁体的磁场饱和的薄电枢构件上，并且它们被差分耦合以产生共模抑制。

公开(公告)号：US4413339A

公开(公告)日：1983-11-01

申请号：US277060

申请日：1981-06-24

Applicant: Charles M. Riggle ,  Lih-Jyh Weng ,  Norman A. Field

Inventor： Charles M. Riggle ,  Lih-Jyh Weng ,  Norman A. Field

IPC: H03M13/15 ,  G06F11/12

CPC classification number: H03M13/151

Abstract: An error detecting and correcting system implementing the Reed-Solomon (1023, 1006) code having code words whose symbols are elements in the Galois field GF(2.sup.10) generated by either the primitive polynomial x.sup.10 +x.sup.3 +1 or x.sup.10 +x.sup.7 +1. An original data word is encoded to produce a code word w(x) including a first set of checksum symbols appended thereto. Upon retrieval, the data symbols of the receive code word y(x) are encoded by the same encoder that encodes the original data word to produce a second set of checksum symbols. Both sets of checksum symbols are modulo-two summed to produce a residue R(x) from which error syndromes S.sub.i can be computed and thus enable rapid correction of errors in the received code word y(x). The system also monitors the number of non-zero symbols in the residue R(x) in order to avoid unnecessary computation of error syndromes S.sub.i and other decoding routines, such as when the received code word y(x) is otherwise uncorrectable or when the error exists only in the received checksum symbols, rather than in the data symbols. The distance between code words being (2T+ 2), the error correction routine is bypassed when the number of non-zero symbols in R(x) is less than or equal to T, which indicates that errors only reside in the checksum symbols. When the number of non-zero symbols equals (T+1), the error is uncorrectable. For determining whether a single error exists so that correction can quickly be made, the system also tests whether S.sub.i+1 /S.sub.i is constant for all error syndromes S.sub.i.

Abstract translation: 实现具有代码字的Reed-Solomon（1023,1006）代码的错误检测和校正系统，其码元是由原始多项式x10 + x3 + 1或x10 + x7 + 1产生的伽罗瓦域GF（210）中的元素。 原始数据字被编码以产生包括附加到其上的第一组校验和符号的码字w（x）。 在检索时，接收码字y（x）的数据符号由编码原始数据字的相同编码器编码，以产生第二组校验和符号。 两组校验和符号被模二相加以产生残差R（x），从中可以计算出错误综合征Si，从而能够快速校正接收到的代码字y（x）中的错误。 该系统还监视残差R（x）中的非零符号的数目，以避免误差综合征Si和其他解码程序的不必要的计算，例如当接收到的代码字y（x）不可校正时或当 错误仅存在于接收到的校验和符号中，而不是数据符号中。 当R（x）中的非零符号数小于或等于T时，代码字之间的距离为（2T + 2），纠错程序被旁路，这表示错误仅驻留在校验和符号中。 当非零符号的数量等于（T + 1）时，该错误是不可校正的。 为了确定是否存在单一误差以便能够快速进行校正，系统还测试Si + 1 / Si对于所有误差综合征Si是否恒定。