公开(公告)号：WO1990004252A1

公开(公告)日：1990-04-19

申请号：PCT/US1989004170

申请日：1989-09-25

Applicant: MAXTOR CORPORATION

Inventor： MAXTOR CORPORATION ,  ABATE, Charles ,  JACKSON, Robert

IPC: G11B21/08

CPC classification number: G11B21/085 ,  G11B5/5547 ,  G11B7/08517

Abstract: A seek method for disk drives is described. In the seek method of the present invention, the tracking servo loop remains in a track positioning mode throughout the entire seek process. By effectively varying the reference position of the head (12) with respect to track center under a predetermined profile, the track positioning mode is utilized to produce a pseudo-continuous movement across the disk surface. In essence, the servo track following loop attempts to maintain position relative to a local track center as dictated by profile information supplied by a microprocessor (26). The system of the present invention is an open loop in the sense that no attempt is made to loop information about deviation from the predefined profile back to the microprocessor (26). Local positioning, however, remains closed loop at all times so that the system is always within the predicted track and arrives directly on target.

公开(公告)号：WO1988005954A1

公开(公告)日：1988-08-11

申请号：PCT/US1988000307

申请日：1988-02-03

Applicant: MAXTOR CORPORATION

Inventor： MAXTOR CORPORATION ,  HUBER, Don

IPC: G11B05/09

CPC classification number: G11B20/10046 ,  G11B20/10009

Abstract: A channel filter employing time domain targeting techniques to eliminate inter symbol interference in the reading of information from magnetic media. A pulse detector (16) outputs a signal characteristic of polarity reversals on the surface of magnetic storage media. This output signal is coupled to a tapped delay line network (17) and a moderate order L-C network (27). The tapped delay line provides an output signal to the L-C network, which flattens out pre-cursive and post-cursive undershoots. As a result, a moderate order L-C network is sufficient to approximate the desired target response so that maximum information density can be achieved. The tapped delay line provides an output signal (57, 58) that consists of a superposition (sum) of the input signal delayed and weighted. This forms a transversal filter. As with any linear filter, reciprocity applies. Consequently, the output of the tapped delay line is taken from the input with AC coupling directly to ground. The output is taken from a low characteristic impedance, eliminating the need for an internal amplifier capable of driving a low impedance equal to the characteristic impedance of the delay line.

公开(公告)号：WO1998018081A1

公开(公告)日：1998-04-30

申请号：PCT/US1997019459

申请日：1997-10-10

Applicant: MAXTOR CORPORATION

Inventor： MAXTOR CORPORATION ,  DITTMAR, Mark ,  ALEXANDER, James

IPC: G06F15/18

CPC classification number: G06F3/061 ,  G06F3/0626 ,  G06F3/0634 ,  G06F3/0677 ,  G06N3/126 ,  G11B5/012 ,  G11B20/10009 ,  G11B20/10055 ,  G11B20/10481 ,  G11B27/36 ,  G11B2005/001 ,  G11B2005/0018 ,  G11B2220/20 ,  Y10S706/902

Abstract: A method is disclosed for tuning parameter values in a recording channel (22) of a data storage device (12). The parameter values (24) are tuned using a genetic process based on the principles of simulated evolution. An initial population of individuals is generated wherein each individual includes a value for each of a plurality of channel parameters. Fitness values are then calculated for each of the individuals. Individuals are then chosen for mating from the initial population based on the calculated fitness values. The chosen individuals are manipulated using genetic operators to produce a new population of parameter strings. Fitness values are then calculated for the new population and the cycle is repeated. The process is continued until a desired fitness is achieved or a predetermined number of generations have been produced. After the process has ended, an individual is chosen based on fitness values and the channel parameters of the data storage system (10) are set accordingly.

Abstract translation: 公开了一种用于调整数据存储装置（12）的记录通道（22）中的参数值的方法。 使用基于模拟进化原理的遗传过程调整参数值（24）。 生成个体的初始群体，其中每个个体包括多个信道参数中的每一个的值。 然后为每个人计算健身值。 然后根据所计算的适合度值选择个体从初始群体进行交配。 使用遗传算子操纵所选择的个体以产生新的参数串。 然后计算新人群的健身值，并重复循环。 继续该过程，直到达到期望的适应度或已经产生了预定数量的代。 在处理结束之后，基于适合度值选择个体，相应地设置数据存储系统（10）的通道参数。

公开(公告)号：WO1998012699A1

公开(公告)日：1998-03-26

申请号：PCT/US1997016565

申请日：1997-09-17

Applicant: MAXTOR CORPORATION ,  FRENCH, Jim ,  McNEIL, Mike ,  CHESSMAN, Ross

Inventor： MAXTOR CORPORATION

IPC: G11B15/46

CPC classification number: G11B5/6005 ,  G11B17/32 ,  G11B21/21

Abstract: The present invention is directed to a disk drive (10) that employs a proximity recording interface in which a slider (20) that carries a head (18) is designed to remain in contact with the disk (12) during data transfer operations to achieve a high data density. Debris is cleaned from a pad (44) on the slider (20) that carries the head (18). The debris, if allowed to accumulate, can reach a depth at which the head (18) is spaced from the disk (12) at a distance which adversely affects the transfer of data with the disk (12). The spin motor (14) of the disk drive (10) is caused to rotate at a lower angular velocity than during data transfer while the actuator (22) of the disk drive (10) is used to radially displace the slider (20) and associated head (18).

Abstract translation: 本发明涉及一种使用接近记录接口的磁盘驱动器（10），其中，在数据传送操作期间，将带有磁头（18）的滑块（20）设计成与磁盘（12）保持接触以实现 数据密度高。 从承载头部（18）的滑块（20）上的垫（44）清洁碎屑。 碎屑（如果允许积聚）可以到达头部（18）与盘（12）间隔一定距离的深度，这对数据与盘（12）的传送产生不利影响。 磁盘驱动器（10）的旋转电动机（14）以比数据传送期间更低的角速度旋转，同时盘驱动器（10）的致动器（22）用于使滑块（20）径向移动，并且 相关联的头部（18）。

公开(公告)号：WO1997044782A1

公开(公告)日：1997-11-27

申请号：PCT/US1997007407

申请日：1997-05-02

Applicant: MAXTOR CORPORATION

Inventor： MAXTOR CORPORATION ,  CARLSON, Lance, R. ,  BIRTZER, Mark ,  HUTSELL, Larry

IPC: G11B05/54

CPC classification number: G11B21/083

Abstract: The present invention relates to a disk drive seek control system which is capable of rapidly moving a transducer (18) from an initial position to a target position above a data storage medium (12). The system applies control to an actuator motor means (20) based on projected transducer velocity at a future servo sample time. This allows the system to significantly reduce transducer velocity profile. In addition, the system utilizes dynamically adapted feed forward deceleration current during a deceleration portion of the seek cycle to further reduce velocity errors during the seek cycle, the system significantly reduces the length of time required for settling the transducer (18) on the track (14) of the disk (12) after the seek cycle has ended.

Abstract translation: 本发明涉及一种磁盘驱动器搜索控制系统，其能够将换能器（18）从初始位置快速移动到数据存储介质（12）上方的目标位置。 该系统基于在将来的伺服采样时间的投影换能器速度对致动器马达装置（20）进行控制。 这允许系统显着降低换能器速度分布。 此外，该系统在搜索周期的减速部分期间利用动态适应的前馈减速电流，以进一步降低搜索周期期间的速度误差，系统显着减少了在轨道上沉降换能器（18）所需的时间长度 在搜索周期结束之后，盘（12）的图14（14）所示。

公开(公告)号：WO1995002246A1

公开(公告)日：1995-01-19

申请号：PCT/US1994007496

申请日：1994-07-06

Applicant: MAXTOR CORPORATION

Inventor： MAXTOR CORPORATION ,  BRUNER, Curt ,  HUTSELL, Larry ,  REH, Jeff ,  METZ, Robert

IPC: G11B21/10

CPC classification number: G11B33/121 ,  G11B19/00 ,  G11B19/022 ,  G11B19/2009 ,  G11B25/043 ,  G11B27/3027 ,  G11B33/122 ,  G11B2220/20

Abstract: An electronic architecture that provides a portable hard disk drive that can meet the type II PCMCIA specification and which can efficiently operate with a 3.3 V power supply.

Abstract translation: 一种电子架构，提供可满足II型PCMCIA规范的便携式硬盘驱动器，可以使用3.3 V电源高效运行。

公开(公告)号：WO1994016490A1

公开(公告)日：1994-07-21

申请号：PCT/US1994000129

申请日：1994-01-04

Applicant: MAXTOR CORPORATION

Inventor： MAXTOR CORPORATION ,  JABBAR, Mohammed, Abdul ,  TAKULDER, Ali, Ahsen

IPC: H02K05/16

CPC classification number: H02K7/086 ,  F16C17/045 ,  F16C17/105 ,  F16C33/1015 ,  F16C2370/12 ,  G11B19/2009 ,  H02K21/22

Abstract: An electric motor for a magnetic disk memory device includes a conical hub (12) and a conical plane or grooved base (43) and an integral air-bearing (14, 18, 21, 22) which significantly reduces non-repeatable runout, audible noise, and vibration. The base (43) is rigidly attached to the shaft (25) while the hub (12), which carries all of the load, rotates on the air cushion created by a pressurized air film (18). An upper sleeve (22) controls the pressure fluctuation in the air film (18) in a dynamic condition. In a static condition, the hub (12) rests on a dry lubricated surface. The force developed due to the pressurized air film (18) balances the rotating member in any condition.

Abstract translation: 一种用于磁盘存储装置的电动马达，包括锥形轮毂（12）和锥形平面或槽形基座（43）和一体的空气轴承（14,18,21,22），其显着地减少不可重复的跳动，可听见的 噪音和振动。 承载所有负载的轮毂（12）在由加压空气薄膜（18）产生的气垫上旋转，基座（43）刚性地附接到轴（25）。 上套管（22）在动态条件下控制空气膜（18）中的压力波动。 在静止状态下，轮毂（12）位于干润滑的表面上。 由于加压空气膜（18）产生的力在任何情况下均衡旋转构件。

公开(公告)号：WO1994011874A1

公开(公告)日：1994-05-26

申请号：PCT/US1993009856

申请日：1993-10-14

Applicant: MAXTOR CORPORATION

Inventor： MAXTOR CORPORATION ,  CUCCIO, Allen ,  HARWOOD, Gordon ,  METZ, Robert

IPC: G11B19/04

CPC classification number: G11B19/06 ,  G11B19/04

Abstract: A sensor system which disables the write gate (54) of a hard disk drive (10) when the drive unit is subjected to a threshold level of shock or vibration. The sensor system includes a transducer (46) which can sense any rotational acceleration of the disk drive (10). The transducer (46) produces an output voltage that is proportional to the acceleration of the drive unit. The output voltage is compared to a reference voltage by a logic circuit which disables the write gate (54) of the disk drive (10), if the output voltage of the transducer (46) is equal to or greater than the reference voltage.

Abstract translation: 传感器系统，当所述驱动单元受到阈值水平的冲击或振动时，所述传感器系统禁用硬盘驱动器（10）的写入闸门（54）。 传感器系统包括能感测盘驱动器（10）的任何旋转加速度的换能器（46）。 换能器（46）产生与驱动单元的加速度成比例的输出电压。 如果换能器（46）的输出电压等于或大于参考电压，则通过逻辑电路将输出电压与参考电压进行比较，该逻辑电路禁用盘驱动器（10）的写入门（54）。

公开(公告)号：WO1994009489A1

公开(公告)日：1994-04-28

申请号：PCT/US1993009601

申请日：1993-10-07

Applicant: MAXTOR CORPORATION

Inventor： MAXTOR CORPORATION ,  MACPHERSON, Aaron

IPC: G11B05/54

CPC classification number: G11B19/04 ,  G11B21/02 ,  G11B21/21 ,  G11B21/22

Abstract: A passive non-contact magnetic latch (60) for latching read-write heads of a disk drive over a landing area of the disk is disclosed. The magnetic latch forms a magnetic circuit for capturing a latch tab (48) within an air gap (61). Magnetic flux lines traverse the latch tab in a direction substantially perpendicular to a direction of movement of the latch tab.

Abstract translation: 公开了一种用于在磁盘的着陆区域上锁存磁盘驱动器的读写磁头的被动非接触式磁性锁存器（60）。 磁性闩锁形成用于捕获气隙（61）内的闩锁片（48）的磁路。 磁通线在基本上垂直于闩锁片的移动方向的方向上横过闩锁片。

公开(公告)号：WO1994009487A1

公开(公告)日：1994-04-28

申请号：PCT/US1993009664

申请日：1993-10-08

Applicant: MAXTOR CORPORATION

Inventor： MAXTOR CORPORATION ,  BAKER, David, L. ,  BOECKNER, James, W., Jr. ,  CHESSMAN, Shirley ,  SWENSON, Mark

IPC: G11B05/012

CPC classification number: G11B33/121 ,  G11B25/043

Abstract: A 10 millimeter z-height form factor is disclosed having a base plate (24) with a spin motor boss (26) for holding a spin motor (14) and an actuator bearing assembly boss for coupling an actuator bearing assembly. A circuit board (38) positioned below the base plate has a hole for receiving the spin motor boss (26) and a hole for receiving the actuator bearing assembly boss.

Abstract translation: 公开了一种10毫米z高度形状因数，其具有带有用于保持旋转马达（14）的旋转马达凸台（26）的基板（24）和用于联接致动器轴承组件的致动器轴承组件凸台。 位于基板下方的电路板（38）具有用于接收旋转电机凸台（26）的孔和用于接收致动器轴承组件凸台的孔。