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1. 发明授权

US5914830A Digital servo control system including sample integrity tester for reducing effects of spurious sampled position values 失效
标题翻译：数字伺服控制系统包括采样完整性测试仪，用于减少杂散采样位置值的影响
公开(公告)号：US5914830A
公开(公告)日：1999-06-22
申请号：US978489
申请日：1997-11-25
申请人： Ronald James Kadlec , Paul Henry Kelley , Philip Saxton Weilbacher
发明人： Ronald James Kadlec , Paul Henry Kelley , Philip Saxton Weilbacher
IPC分类号： G11B5/55 , G11B5/596 , G11B21/08 , G11B21/10
CPC分类号： G11B5/59622 , G11B21/081 , G11B21/085 , G11B21/10 , G11B5/5534 , G11B5/5547 , G11B5/59616 , G11B5/5965
摘要： In a digital servo control system especially suitable for use in disk drives, a sample integrity tester is provided. Sample measurements, indicating the position of a disk drive's read/write head relative to tracks of information on a recording medium, are subject to error due to noise. The sample integrity tester 2410, 2420, 2430 effectively filters out noise-corrupted measurements and thus prevents clearly erroneous measurements from contaminating calculations performed within the servo controller's control loop. If a measured position signal falls outside a given window (indicating a possible spurious position value has been read), an observer's predicted value is used rather than the spurious value. Using the predicted value allows the loop to operate in a "freewheel" (open-loop) mode. A preferred implementation of the sample integrity tester involves a coarse window that is static, and a fine window that changes dynamically based on an effort signal.
摘要翻译：在特别适用于磁盘驱动器的数字伺服控制系统中，提供了一个样本完整性测试器。表示磁盘驱动器的读/写头相对于记录介质上的信息的轨迹的位置的样本测量将由于噪声而出现错误。样品完整性测试器2410,2420,2430有效地滤除噪声损坏的测量值，从而防止在伺服控制器的控制回路内执行污染的清楚的错误测量。如果测量的位置信号落在给定窗口之外（指示可能的寄生位置值已被读取），则使用观察者的预测值而不是伪造值。使用预测值可以使循环以“续流”（开环）模式运行。样本完整性测试器的优选实施方案涉及静态的粗略窗口，以及基于努力信号而动态改变的精细窗口。

2. 发明授权

US5680272A Digital servo control system for use in disk drives 失效
公开(公告)号：US5680272A
公开(公告)日：1997-10-21
申请号：US456810
申请日：1995-06-01
申请人： Ronald James Kadlec , Thomas James Frederick
发明人： Ronald James Kadlec , Thomas James Frederick
IPC分类号： G11B5/55 , G11B5/596 , G11B21/08 , G11B21/10
CPC分类号： G11B5/59622 , G11B21/081 , G11B21/085 , G11B21/10 , G11B5/5534 , G11B5/5547 , G11B5/59616 , G11B5/5965
摘要： A servo control system provides adaptive compensation for a variety of tracking and seek problems found in disk drives. The servo control system is ideally implemented in digital form for accuracy, speed and compactness. A first embodiment includes two modes, a tracking (or position) mode and a seek (or velocity) mode, each mode employing a variety of compensation functions. A second embodiment includes a single comprehensive control system which functions during both tracking and seek operations.

3. 发明授权

US5914829A Digital servo control system for use in disk drives, including calibrated controller for fixed-distance seeks 失效
标题翻译：用于磁盘驱动器的数字伺服控制系统，包括用于固定距离寻找的校准控制器
公开(公告)号：US5914829A
公开(公告)日：1999-06-22
申请号：US457235
申请日：1995-06-01
申请人： Ronald James Kadlec , Paul Henry Kelley , Thomas James Frederick
发明人： Ronald James Kadlec , Paul Henry Kelley , Thomas James Frederick
IPC分类号： G11B5/55 , G11B5/596 , G11B21/08 , G11B21/10
CPC分类号： G11B5/59622 , G11B21/081 , G11B21/085 , G11B21/10 , G11B5/5534 , G11B5/5547 , G11B5/59616 , G11B5/5965
摘要： In a servo controller for controlling the position of a read/write head of a disk drive, a calibrated controller is dedicated to fixed-distance seeks, especially for "single-track seeks" (seeks to an immediately-adjacent track). The controller is first calibrated during a calibration period that precedes an operational period. The purpose of the calibration period is to determine an optimum combination of "calibrated values" for the fixed-distance seeks. "Calibrated values" may include: acceleration pulse magnitude, acceleration pulse duration, deceleration pulse magnitude, and deceleration pulse duration. During the calibration period, various combinations of possible calibrated values are tested during a series of test seeks of the predetermined fixed distance. During each test seek conducted in the calibration period, a cost function is calculated, and the combination of possible calibrated values with the best cost function is chosen for use as the optimum combination of calibrated values during the subsequent operational period. If, during the operational period, the cost function exceeds the cost function of the optimum combination of calibrated values by a predetermined amount, the controller is re-calibrated to maintain optimum performance of the disk drive during fixed-distance seeks.
摘要翻译：在用于控制磁盘驱动器的读/写头位置的伺服控制器中，校准控制器专用于固定距离寻道，特别是用于“单轨寻迹”（寻求直接相邻的轨道）。首先在操作周期之前的校准周期内校准控制器。校准周期的目的是确定固定距离寻找的“校准值”的最佳组合。 “校准值”可以包括：加速度脉冲幅度，加速度脉冲持续时间，减速脉冲幅度和减速脉冲持续时间。在校准期间，在预定固定距离的一系列测试期间测试可能的校准值的各种组合。在校准期间进行的每个测试寻求期间，计算成本函数，并选择可能的校准值与最佳成本函数的组合，以用作随后操作期间校准值的最佳组合。如果在操作期间，成本函数超过校准值的最佳组合的成本函数预定量，则在固定距离寻找期间重新校准控制器以保持磁盘驱动器的最佳性能。

4. 发明授权

US5646797A Digital servo control system for use in disk drives 失效
标题翻译：用于磁盘驱动器的数字伺服控制系统
公开(公告)号：US5646797A
公开(公告)日：1997-07-08
申请号：US856954
申请日：1992-07-07
申请人： Ronald James Kadlec , Thomas James Frederick , Paul Henry Kelley , Philip Saxton Weilbacher
发明人： Ronald James Kadlec , Thomas James Frederick , Paul Henry Kelley , Philip Saxton Weilbacher
IPC分类号： G11B5/55 , G11B5/596 , G11B21/08 , G11B21/10
CPC分类号： G11B5/59622 , G11B21/081 , G11B21/085 , G11B21/10 , G11B5/5534 , G11B5/5547 , G11B5/59616 , G11B5/5965
摘要： A servo control system provides adaptive compensation for a variety of tracking and seek problems found in disk drives. The servo control system is ideally implemented in digital form for accuracy, speed and compactness. A first embodiment includes two modes, a tracking (or position) mode and a seek (or velocity) mode, each mode employing a variety of compensation functions. A second embodiment includes a single comprehensive control system which functions during both tracking and seek operations.
摘要翻译： PCT No.PCT / US91 / 06602 Sec。 371日期：1992年7月7日 102（e）日期1992年7月7日PCT 1991年9月17日PCT公布。第WO92 / 05543号公报日期1992年4月2日伺服控制系统为各种跟踪寻找磁盘驱动器中发现的问题提供自适应补偿。伺服控制系统理想地以数字形式实现精度，速度和紧凑性。第一实施例包括两种模式，跟踪（或位置）模式和寻道（或速度）模式，每种模式采用各种补偿功能。第二实施例包括在跟踪和寻找操作期间起作用的单个综合控制系统。

5. 发明授权

US4757406A High capacity disk drive 失效
标题翻译：大容量磁盘驱动器
公开(公告)号：US4757406A
公开(公告)日：1988-07-12
申请号：US775802
申请日：1985-09-13
申请人： Alec D. Stewart , David Shanks
发明人： Alec D. Stewart , David Shanks
IPC分类号： G06F3/06 , G11B5/012 , G11B5/55 , G11B19/04 , G11B27/30 , G11B5/09
CPC分类号： G06F3/0601 , G11B19/04 , G11B27/30 , G11B5/012 , G11B5/5521 , G06F2003/0692
摘要： A method of and apparatus for generating and protecting hard sector pulses using the read/write heads of the disk drive without using any external transducers is disclosed. Each track of the disk is pre-formatted with a pattern of a burst of data followed by a short erased gap repeated around the track once per sector. The data bursts are converted to digital pulses which are used to trigger a monostable as long as the read/write heads are positioned over data. The lack of an output signal from the monostable is used to detect the erased gaps. At the end of the erased gap, a sector marker pulse is generated. Various protection signals are also generated. The high capacity hard sectored computer disk drive system disclosed herein utilizes a hard disk which rotates at a speed of approximately 2750 r.p.m. The data received from the host computer for storage on the hard disk is converted to 2,7 RLL coding prior to being written onto the disk. The disk drive system has a formatted data storage capacity in excess of 10 megabytes per disk, using both sides of the disk.
摘要翻译：公开了一种用于使用磁盘驱动器的读/写头产生和保护硬扇区脉冲而不使用任何外部换能器的方法和装置。磁盘的每个磁道都被预先格式化为一个数据突发的模式，之后是每个扇区围绕磁道重复的短擦除间隙。只要读/写头位于数据上方，数据脉冲串就被转换为数字脉冲，用于触发单稳态。来自单稳态的输出信号的缺少用于检测擦除的间隙。在擦除的间隙结束时，产生扇区标记脉冲。还产生各种保护信号。本文公开的高容量硬盘式计算机磁盘驱动器系统利用以大约2750转/分的速度旋转的硬盘。从主计算机接收的用于存储在硬盘上的数据在写入磁盘之前被转换为2,7 RLL编码。磁盘驱动器系统的格式化数据存储容量超过每个磁盘10兆字节，使用磁盘的两边。

6. 发明授权

US5684650A Digital servo control system for use in disk drives 失效
标题翻译：用于磁盘驱动器的数字伺服控制系统
公开(公告)号：US5684650A
公开(公告)日：1997-11-04
申请号：US202371
申请日：1994-02-25
申请人： Ronald James Kadlec , Thomas James Frederick , Paul Henry Kelley , Philip Saxton Weilbacher
发明人： Ronald James Kadlec , Thomas James Frederick , Paul Henry Kelley , Philip Saxton Weilbacher
IPC分类号： G11B5/55 , G11B5/596 , G11B21/08 , G11B21/10
CPC分类号： G11B5/59622 , G11B21/081 , G11B21/085 , G11B21/10 , G11B5/5534 , G11B5/5547 , G11B5/59616 , G11B5/5965
摘要： A servo control system provides adaptive compensation for a variety of tracking and seek problems found in disk drives. The servo control system is ideally implemented in digital form for accuracy, speed and compactness. A first embodiment includes two modes, a tracking (or position) mode and a seek (or velocity) mode, each mode employing a variety of compensation functions. A second embodiment includes a single comprehensive control system which functions during both tracking and seek operations.
摘要翻译：伺服控制系统为各种跟踪和寻找磁盘驱动器中存在的问题提供自适应补偿。伺服控制系统理想地以数字形式实现精度，速度和紧凑性。第一实施例包括两种模式，跟踪（或位置）模式和寻道（或速度）模式，每种模式采用各种补偿功能。第二实施例包括在跟踪和寻找操作期间起作用的单个综合控制系统。

7. 发明授权

US4518904A Stepper motor control for data disk system 失效
标题翻译：数据磁盘系统的步进电机控制
公开(公告)号：US4518904A
公开(公告)日：1985-05-21
申请号：US573708
申请日：1984-01-25
申请人： Nigel MacLeod , David Ruxton
发明人： Nigel MacLeod , David Ruxton
IPC分类号： G11B5/55 , G11B21/08 , H02P8/00 , H02K29/04
CPC分类号： H02P8/00 , G11B21/085 , G11B5/553
摘要： A data disk storage system utilizing a bipolar stepper motor for use in conjunction with the controlling of the operation of the storage system. The stepper motor imparts a drive force for moving a control arm to which a read/write head is coupled. The operation of the stepper motor through driving of the control arm causes the read/write head to move across the various tracks of the data disk within the data storage system during operation of such system. The stepper motor includes a stator and a rotor coupled to an output shaft of the motor which output shaft in turn is coupled to the read/write head through the control arm. A first drive mechanism within the stepper motor generates a first phase signal within the stator for creating a first drive force for rotating a rotor. A second drive mechanism of the stepper motor generates a second phase signal within the stator for creating a second drive force for rotating the rotor. These first and second drive forces are out of phase with each other, normally by 90.degree. when both signals are positive or both are negative or by multiples of 90.degree. when one of the signals is positive and the other is negative. A control mechanism selectively provides positive and negative phase current signals to the first and second drive mechanisms for generating 8 stable step positions for the rotor during each motor cycle. This control mechanism controls the current supplied to the first and second drive mechanism so that the resulting holding torque on the rotor generated by the first and second drive mechanisms is substantially the same at each step position.
摘要翻译：一种数据盘存储系统，利用双极步进电机与控制存储系统的操作结合使用。步进电机提供用于移动读/写头耦合到的控制臂的驱动力。通过控制臂的驱动，步进电机的操作使得读/写头在这种系统的操作期间在数据存储系统内的数据盘的各种轨迹上移动。步进电动机包括定子和联接到电动机的输出轴的转子，输出轴又通过控制臂耦合到读/写头。步进电机内的第一驱动机构在定子内产生第一相位信号，以产生用于旋转转子的第一驱动力。步进电机的第二驱动机构在定子内产生第二相位信号，以产生用于旋转转子的第二驱动力。当两个信号为正或者两个为负时，这些第一和第二驱动力彼此不同相，通常为90°，当信号之一为正，另一个为负时，均为90度或90度的倍数。控制机构选择性地向第一和第二驱动机构提供正相和负相电流信号，以在每个电机循环期间为转子产生8个稳定的步进位置。该控制机构控制提供给第一驱动机构和第二驱动机构的电流，使得由第一驱动机构和第二驱动机构产生的转子上产生的保持转矩基本上相同。

8. 发明授权

US5995312A High capacity disk drive 失效
标题翻译：大容量磁盘驱动器
公开(公告)号：US5995312A
公开(公告)日：1999-11-30
申请号：US116558
申请日：1993-09-07
申请人： Nigel Macleod
发明人： Nigel Macleod
IPC分类号： G06F3/06 , G11B5/012 , G11B20/10 , G11B25/04 , G11B33/12 , G11B5/03
CPC分类号： G11B33/121 , G06F3/0601 , G06F3/0607 , G06F3/0625 , G06F3/0658 , G06F3/0674 , G11B20/10 , G11B25/043 , G11B5/012 , G06F2003/0692 , Y02B60/1246
摘要： A high capacity computer disk drive system operating a micro-hard disk drive is disclosed in which the hard disk rotates at a speed of approximately 2746 r.p.m. and in which the data received from the host computer for storage on the hard disk is converted to 2,7 RLL coding prior to being written onto the disk. The disk drive system disclosed herein has a formatted data storage capacity in excess of 10 MB and an unformatted digital information storage capacity in excess of 12.5 MB, using both sides of the disk. The micro-hard disk drive system is connected to a host computer using a Small Computer Systems Interface (SCSI) which eliminates the need to provide additional disk controller hardware and software in the host computer. The micro-Winchester disk drive system is particularly suited to meet the needs of a portable computer system.
摘要翻译：公开了一种操作微型硬盘驱动器的高容量计算机磁盘驱动器系统，其中硬盘以大约2746转/分钟的速度旋转。并且其中从主计算机接收的用于存储在硬盘上的数据在被写入盘之前被转换为2,7 RLL编码。本文公开的磁盘驱动器系统具有超过10MB的格式化数据存储容量和超过12.5MB的未格式化的数字信息存储容量，使用磁盘的两侧。微型硬盘驱动器系统使用小型计算机系统接口（SCSI）连接到主机，无需在主机中提供额外的磁盘控制器硬件和软件。微型温彻斯特磁盘驱动器系统特别适合于满足便携式计算机系统的需要。

9. 发明授权

US5638230A Digital servo control system for use in disk drives 失效
标题翻译：用于磁盘驱动器的数字伺服控制系统
公开(公告)号：US5638230A
公开(公告)日：1997-06-10
申请号：US456853
申请日：1995-06-01
申请人： Ronald J. Kadlec
发明人： Ronald J. Kadlec
IPC分类号： G11B5/55 , G11B5/596 , G11B21/08 , G11B21/10
CPC分类号： G11B5/59622 , G11B21/081 , G11B21/085 , G11B21/10 , G11B5/5534 , G11B5/5547 , G11B5/59616 , G11B5/5965
摘要： A servo control system provides adaptive compensation for a variety of tracking and seek problems found in disk drive. The servo control system is ideally implemented in digital form for accuracy, speed and compactness. A first embodiment includes two modes, a tracking (or position) mode and a seek (or velocity) mode, each mode employing a variety of compensation functions. A second embodiment includes a single comprehensive control system which functions during both tracking and seek operations.
摘要翻译：伺服控制系统为各种跟踪和寻找磁盘驱动器中发现的问题提供自适应补偿。伺服控制系统理想地以数字形式实现精度，速度和紧凑性。第一实施例包括两种模式，跟踪（或位置）模式和寻道（或速度）模式，每种模式采用各种补偿功能。第二实施例包括在跟踪和寻找操作期间起作用的单个综合控制系统。

10. 发明授权

US4890174A Rotary voice coil micro-hard disk drive system 失效
标题翻译：旋转音圈微硬盘驱动系统
公开(公告)号：US4890174A
公开(公告)日：1989-12-26
申请号：US29056
申请日：1987-03-18
申请人： Brian D. Chalmers , Colin A. Mackenzie , Kishore K. Kapoor
发明人： Brian D. Chalmers , Colin A. Mackenzie , Kishore K. Kapoor
IPC分类号： G11B5/012 , G11B5/55 , G11B19/20 , G11B25/04
CPC分类号： G11B5/012 , G11B19/20 , G11B25/043 , G11B5/5521
摘要： A very high capacity, closed-loop Winchester disk drive system particularly suited to meet the demands of a portable computer system is disclosed. The micro-Winchester disk is a Winchester disk of 95 mm in diameter. The disk drive system of the present invention, by virtue of its small size and vibration isolation, is ideally suited for use in portable computer systems. The micro-Winchester disk drive system was developed to store data at a density in excess of 1000 tracks per inch utilizing a closed-loop rotary voice coil positioning mechanism. This disk drive system provides fast access data storage for use with small business computers, terminals and microprocessor-based systems, portable or otherwise, and many other areas where compact, rugged, and lightweight hard disk storage is required. The disk drive system of the present invention normally utilizes between two and four hard disks, such as Winchester disks, with one disk containing a dedicated servo surface. The drive system provides data storage of between about 21 and 50 Megabytes, once the disks are formatted.
摘要翻译：公开了一种非常高容量的闭环温切斯特磁盘驱动器系统，特别适用于满足便携式计算机系统的需求。微型温彻斯特圆盘是直径为95毫米的温彻斯特圆盘。本发明的磁盘驱动系统凭借其小型化和隔振性，非常适用于便携式计算机系统。微型温彻斯特磁盘驱动器系统被开发用于使用闭环旋转音圈定位机构以每英寸超过1000轨道的密度存储数据。该磁盘驱动器系统提供快速访问数据存储，用于小型商业计算机，终端和基于微处理器的系统，便携式或其他方面，以及需要紧凑，坚固和轻量级的硬盘存储的许多其他领域。本发明的磁盘驱动器系统通常利用两个和四个硬盘（例如温彻斯特磁盘），其中一个磁盘包含专用的伺服表面。驱动器系统提供大约21到50兆字节之间的数据存储，一旦格式化磁盘。

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