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公开(公告)号：US4933785A
公开(公告)日：1990-06-12
申请号：US162799
申请日：1988-03-01
申请人： James H. Morehouse , Thomas L. Andrews, Jr. , John H. Blagaila , David M. Furay , Terry G. Johnson
发明人： James H. Morehouse , Thomas L. Andrews, Jr. , John H. Blagaila , David M. Furay , Terry G. Johnson
IPC分类号： G06F1/32 , G11B5/596 , G11B5/60 , G11B17/038 , G11B19/00 , G11B19/06 , G11B21/00 , G11B21/02 , G11B21/08 , G11B21/12 , G11B21/21 , G11B21/22 , G11B23/00 , G11B25/04 , G11B33/12 , G11B33/14
CPC分类号： G11B33/121 , G11B19/00 , G11B19/06 , G11B21/00 , G11B21/08 , G11B21/083 , G11B21/12 , G11B21/22 , G11B25/043 , G11B33/14 , G11B5/6005
摘要： A disk drive apparatus is disclosed for primary use with portable, laptop or other information storage systems. The disk drive apparatus includes one or more about 2.5 inch hard disks. A rotary actuator is utilized and includes an arm assembly having a cam follower member for use in dynamically loading/unloading read/write head(s). The cam follower member moves along a ramp, which forms a cam surface, for loading/unloading. The spin motor assembly of the disk drive apparatus includes a rotor having a clamp ring that enables a more powerful spin motor to be incorporated, as well as facilitating and enhancing the connection of the hard disks to the spin motor. The disk drive apparatus also includes servo electronics responsive to a back emf generated signal for use in the servo operation, which use has the potential to increase the servo bandwidth. The accuracy of the servo operation is also enhanced by the use of a flexible circuit that prevents unwanted torque from being applied to the actuator during operation. The disk drive electronics also includes hardware and software for reducing power consumption.
摘要翻译： 公开了用于主要用于便携式，膝上型或其它信息存储系统的磁盘驱动装置。 磁盘驱动装置包括一个或多个约2.5英寸的硬盘。 使用旋转致动器并且包括具有用于动态地装载/卸载读/写头的凸轮从动件的臂组件。 凸轮从动件沿着形成凸轮表面的斜面移动，用于装载/卸载。 盘驱动装置的旋转马达组件包括具有夹环的转子，该夹环能够搭载更强大的旋转马达，以及促进和增强硬盘与旋转马达的连接。 磁盘驱动装置还包括响应于用于伺服操作的反电动势产生信号的伺服电子设备，其使用具有增加伺服带宽的潜力。 伺服操作的精度也通过使用柔性电路来提高，该柔性电路在操作期间防止不必要的扭矩施加于致动器。 磁盘驱动器电子设备还包括用于降低功耗的硬件和软件。
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公开(公告)号：US5539714A
公开(公告)日：1996-07-23
申请号：US222494
申请日：1994-04-04
CPC分类号： G11B5/59627
摘要： A secondary servo compensator, in a miniature disk drive having at least one disk and a servo system to position an actuator driven read/write head over any one of a number of tracks on the disk, provides on-line real-time compensation for disk runout that occurs during operation of the miniature disk drive. The servo system includes a servo compensator that has a gain and that generates an actuator position signal for positioning the read/write head over the track in response to a position error signal. The secondary servo compensator functions independently of the servo compensator. Specifically, the secondary servo compensator receives the position error signal and analyzes the disk runout and simultaneously generates a runout compensation signal during operation of the disk drive, i.e., while the disk drive is idle, reading, or writing. An actuator signal generator combines the actuator adjustment signal that is generated using the position error signal from sector "i" and the runout compensation signal that is generated using the position error signal for sector "i-1" to create a runout compensated actuator signal for sector "i". Hence, the runout compensation is fed forward. The servo system, using the information from the servo compensator and the secondary servo compensator, continuously maintains the read/write head over the desired track centerline independent of the offset of the center of the disk from true center of rotation.
摘要翻译： 在具有至少一个盘的微型磁盘驱动器中的辅助伺服补偿器和用于将致动器驱动的读/写头定位在盘上的多个磁道上的任何一个上的伺服系统为盘提供在线实时补偿 在微型磁盘驱动器运行期间发生的跳动。 伺服系统包括具有增益并且产生用于响应于位置误差信号将读/写头定位在轨道上的致动器位置信号的伺服补偿器。 辅助伺服补偿器独立于伺服补偿器起作用。 具体来说，辅助伺服补偿器接收位置误差信号并分析磁盘跳动并在磁盘驱动器的操作期间，即磁盘驱动器空闲，读取或写入时同时产生跳动补偿信号。 致动器信号发生器组合使用来自扇区“i”的位置误差信号产生的致动器调节信号和使用扇区“i-1”的位置误差信号产生的跳动补偿信号，以产生用于 部门“我”。 因此，跳动补偿是前进的。 使用来自伺服补偿器和辅助伺服补偿器的信息的伺服系统连续地将读/写头保持在期望的轨道中心线上，而不依赖于磁盘中心与真实旋转中心的偏移。
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公开(公告)号：US5291110A
公开(公告)日：1994-03-01
申请号：US786333
申请日：1991-10-31
CPC分类号： G11B5/5547
摘要： A silent seek servo controller is used in a low profile miniature disk drive to minimize acoustic noise and the problems associated therewith. The silent seek servo controller of this invention reduces acoustic noise generation at the expense of seek performance. Since the silent seek servo controller of this invention minimizes acoustic noise, the controller helps to eliminate vibrations within the computer. The silent seek servo controller is a one mode continuous position servo seek controller that accelerates and decelerates the actuator using a smooth, continuous and completely symmetric acceleration trajectory. Specifically, for a seek time t, the disk drive actuator is accelerated for one-half the seek time, i.e, time t/2, and decelerated for the other half of seek time t. The peak acceleration occurs at time t/4 and the peak deceleration occurs at time 3t/4. The symmetry of each acceleration phase assures that any acoustic noise generated by uneven acceleration is eliminated.
摘要翻译： 在低调微型磁盘驱动器中使用无声寻道伺服控制器以最小化噪声和与之相关的问题。 本发明的无声搜索伺服控制器以寻求性能为代价减少了噪声产生。 由于本发明的无声搜索伺服控制器使声学噪声最小化，所以控制器有助于消除计算机内的振动。 无声寻道伺服控制器是一种单模式连续位置伺服寻道控制器，它使用平滑，连续和完全对称的加速轨迹来加速和减速执行机构。 具体地说，对于寻道时间t，磁盘驱动器致动器被加速了寻道时间的一半，即时间t / 2，并且对于寻道时间t的另一半被减速。 峰值加速度发生在时间t / 4，峰值减速度发生在时间3t / 4。 每个加速阶段的对称性确保消除由不均匀加速度产生的任何声学噪声。
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公开(公告)号：US4628379A
公开(公告)日：1986-12-09
申请号：US655355
申请日：1984-09-25
CPC分类号： G11B21/106
摘要： A method and apparatus are provided to compensate for the runout that commonly occurs during the reading from or writing of information on the surface of a disk medium using a read/write head. The runout relates to the distance the head is located away from a disk track center during the rotation of the disk. To maintain the head in alignment with the track center during the complete revolution of the disk, position information is obtained. This position information is used with discrete fourier transform techniques to provide a representation of the disk runout. From this representation, a compensating signal can be generated to provide movement of the head that compensates for the runout and keeps the head positioned in alignment with the track center at all times during the disk rotation.
摘要翻译： 提供了一种方法和装置，以补偿在使用读/写头读取或写入磁盘介质的表面上的信息时通常发生的跳动。 跳动与磁盘旋转期间磁头远离磁盘轨道中心的距离有关。 为了在磁盘完全旋转期间保持头部与轨道中心对准，获得位置信息。 该位置信息与离散傅立叶变换技术一起使用以提供磁盘跳动的表示。 从该表示可以产生补偿信号以提供头部的运动，其补偿跳动并且在磁盘旋转期间始终保持磁头与轨道中心对齐。
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5.发明授权Method and apparatus for controlling head movement relative to a disk in an embedded servo system 失效用于在嵌入式伺服系统中用于控制相对于盘的磁头运动的方法和装置
公开(公告)号：US4590526A
公开(公告)日：1986-05-20
申请号：US547308
申请日：1983-11-01
IPC分类号： G11B5/55
CPC分类号： G11B5/5547
摘要： A method and apparatus are provided in an embedded servo system for controllably moving, using a linear motor, a carriage assembly and one or more accompanying heads relative to one or more disk surfaces. Each disk surface includes sectors for reading and writing information. Each disk surface also includes servo fields spaced between the read/write sectors. The servo fields have preset servo or position information for each of the tracks on the disk. The position information is in the form of Normal and Quadrature generated signals used to determine the exact position of the head when it is located between track centers. Using the determined position of the head and knowing a target position on the disk surface, the distance remaining to the target position is found. Using the value of the distance remaining to the target position, a head velocity can be determined and the proper amount of current can be supplied to the linear motor so that the head arrives at the target position in minimal time.
摘要翻译： 在嵌入式伺服系统中提供了一种方法和装置，用于使用线性电动机，托架组件和相对于一个或多个盘表面的一个或多个相关头部可控地移动。 每个磁盘表面包括用于读取和写入信息的扇区。 每个磁盘表面还包括间隔在读/写扇区之间的伺服磁场。 伺服字段为磁盘上的每个磁道预设了伺服或位置信息。 位置信息采用正常和正交生成信号的形式，用于确定头部位于轨道中心之间时的确切位置。 使用确定的头部位置并且知道盘表面上的目标位置，找到剩余到目标位置的距离。 使用剩余到目标位置的距离的值，可以确定头部速度，并且可以向线性电动机提供适当的电流量，使得头部在最短时间内到达目标位置。
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6.发明授权Cross coupled demodulator for generating a servo head position error signal 失效用于产生伺服头位置错误信号的交叉耦合解调器
公开(公告)号：US4092682A
公开(公告)日：1978-05-30
申请号：US713132
申请日：1976-08-10
CPC分类号： G11B5/59655
摘要： An improved demodulator principally for receiving dibits from a servo track and generating a position error signal responsive to the servo head position relative to the track as indicated by the dibit signal. The invention improves the capability of the demodulator to operate when noise is encountered in the dibit signal.
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公开(公告)号：US5872669A
公开(公告)日：1999-02-16
申请号：US473726
申请日：1995-06-07
申请人： James H. Morehouse , Thomas L. Andrews, Jr. , John H. Blagaila , David H. Furay , Terry G. Johnson , H. Ross Chessman
发明人： James H. Morehouse , Thomas L. Andrews, Jr. , John H. Blagaila , David H. Furay , Terry G. Johnson , H. Ross Chessman
CPC分类号： G11B19/06 , G11B19/20 , G11B21/22 , G11B5/6005
摘要： A disk drive apparatus is disclosed for primary use with portable, laptop or other information storage systems. The disk drive apparatus includes one or more about 2.5 inch hard disks. The disk drive apparatus also has electronics, including hardware and software, for detecting a lapse of first and second predetermined time intervals since a last disk access. The disk drive apparatus also includes power conservation means which power down a first portion of disk drive components after a first predetermined time interval has elapsed and for powering down a second portion of disk drive components after a second predetermined time interval has elapsed.
摘要翻译： 公开了用于主要用于便携式，膝上型或其它信息存储系统的磁盘驱动装置。 磁盘驱动装置包括一个或多个约2.5英寸的硬盘。 磁盘驱动装置还具有包括硬件和软件在内的电子装置，用于检测自上次磁盘访问以来第一和第二预定时间间隔的经过。 磁盘驱动装置还包括功率保存装置，其在第一预定时间间隔过去之后对第一部分磁盘驱动器组件断电，并且在经过第二预定时间间隔之后对第二部分磁盘驱动器组件进行掉电。
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公开(公告)号：US5867340A
公开(公告)日：1999-02-02
申请号：US780964
申请日：1997-01-09
申请人： James H. Morehouse , Thomas L. Andrews, Jr. , Gary E. Counts , Steven B. Volk , Michael R. Utenick , Stephen R. Cowen , Richard K. Thompson
发明人： James H. Morehouse , Thomas L. Andrews, Jr. , Gary E. Counts , Steven B. Volk , Michael R. Utenick , Stephen R. Cowen , Richard K. Thompson
IPC分类号： G11B5/11 , G11B5/48 , G11B5/54 , G11B5/55 , G11B5/596 , G11B19/20 , G11B21/10 , G11B25/04 , G11B31/00 , G11B33/12
CPC分类号： G11B33/121 , G11B19/2009 , G11B21/106 , G11B25/043 , G11B31/00 , G11B5/11 , G11B5/4886 , G11B5/54 , G11B5/5526 , G11B5/59622 , G11B5/59627 , G11B5/59644 , G11B5/5965 , Y10S360/903
摘要： Disclosed is a rigid disk drive information storage device which includes a rigid disk having an outside diameter in the range of about 33-34 mm., with a housing having a footprint that includes a width of about 35 mm. and utilizing a rotary actuator for positioning read/write recording elements across the surface of the disk. The disk storage devices further includes a footprint with length of about 50.8 mm., and includes in one embodiment dynamic head loading apparatus for loading the read/write recording elements into operative relationship with the disk. In another embodiment the rigid disk drive utilizes contact start stop loading and unloading of the read/write recording elements. An inertial latch is also provided for preventing rotation of the actuator when the drive is subjected to a rotational force.
摘要翻译： 公开了一种刚性盘驱动器信息存储装置，其包括具有在大约33-34mm范围内的外径的刚性盘，壳体具有包括约35mm的宽度的覆盖区。 并且利用旋转致动器来将读/写记录元件定位在盘的表面上。 磁盘存储设备还包括长度为约50.8mm的占地面积，并且在一个实施例中包括用于将读/写记录元件加载到与盘相关的操作关系的动态磁头加载装置。 在另一个实施例中，刚性盘驱动器利用读/写记录元件的接触开始停止加载和卸载。 还提供惯性闩锁，用于当驱动器受到旋转力时防止致动器的旋转。
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公开(公告)号：US4092683A
公开(公告)日：1978-05-30
申请号：US713133
申请日：1976-08-10
CPC分类号： G11B5/59655
摘要： An improved demodulator principally for receiving dibits from a servo track and generating a position error signal responsive to the servo head position relative to the track as indicated by the dibit signal. The invention improves the functioning of the demodulator for movement of the servo head at both high and low speeds and when noise is encountered in the dibit signal.
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公开(公告)号：US5969899A
公开(公告)日：1999-10-19
申请号：US832029
申请日：1997-04-02
CPC分类号： G11B21/12 , G11B5/54 , G11B5/6005
摘要： An enhanced method and system for unloading magnetic heads are disclosed. The system limits the maximum and minimum speed of the actuator while unloading the heads during a power failure. A BEMF control circuit monitors the velocity of the actuator using the BEMF of the actuator as a gauge of the velocity. The BEMF control circuit uses a sense resistor to remove the inherent resistive component of the actuator from its BEMF measurement. If the velocity of the actuator increases above a safe level the BEMF control circuit decreases actuator current to prevent further acceleration. If the velocity of the actuator decreases below a safe level the BEMF control circuit increases the actuator current to accelerate the actuator to a safe level.
摘要翻译： 公开了一种用于卸载磁头的增强方法和系统。 在停电期间卸载磁头时，系统会限制执行器的最大和最小速度。 BEMF控制电路使用致动器的BEMF作为速度的量度来监视致动器的速度。 BEMF控制电路使用检测电阻从其BEMF测量中去除致动器的固有电阻分量。 如果执行器的速度增加到高于安全水平，BEMF控制电路会降低执行器电流，以防止进一步加速。 如果执行器的速度降低到安全水平以下，BEMF控制电路会增加执行器电流，从而将执行器加速到一个安全的水平。
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