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公开(公告)号：US4685007A
公开(公告)日：1987-08-04
申请号：US564021
申请日：1983-12-21
申请人： Ara W. Nazarian , Donald G. Stupeck
发明人： Ara W. Nazarian , Donald G. Stupeck
CPC分类号： G11B5/5547
摘要： A low cost disk drive system includes track zero information located in a single sector on the disk surface. The information is comprised of a first type of signal located in tracks to one side of an arbitrary reference track and a second type of signal located in the tracks to the other side of the arbitrary reference track. The magnetic head of the disk drive system is moved radially with respect to the disk and the transition between the signals detected in order to locate the head at the reference track.
摘要翻译： 低成本磁盘驱动器系统包括位于磁盘表面上的单个扇区中的磁道零信息。 信息包括位于任意参考轨道一侧的轨道中的第一类型的信号和位于任意参考轨道的另一侧的轨道中的第二类型的信号。 磁盘驱动系统的磁头相对于磁盘径向地移动，并且检测到的信号之间的转变以便将磁头定位在参考磁道上。
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公开(公告)号：US4866554A
公开(公告)日：1989-09-12
申请号：US224077
申请日：1988-07-25
摘要： An automatic head retract system for a disk drive. The system operates in response to electric power turn off to retract the heads to a landing zone on the disk surface. The heads are retracted by operating a positioner motor under the control of logic internal to the disk drive unit without intervention by a host computer. The positioner motor comprises a multiphase DC brushless motor which, after power loss, is supplied with current from a capacitor charged during normal drive usage, and by the back EMF of a spindle motor. A latch mechanically locks the heads in the landing zone.
摘要翻译： 一种用于磁盘驱动器的自动磁头缩回系统。 该系统响应于电力关闭而操作，以将磁头缩回到盘表面上的着陆区。 在通过主机计算机的干预的情况下，通过在磁盘驱动器单元内部的逻辑控制下操作定位器电动机来使磁头缩回。 定位电动机包括一个多相直流无刷电动机，在断电后，从正常驱动使用期间充电的电容器和主轴电动机的反电动势供给电流。 闩锁将头部机械地锁定在着陆区域。
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公开(公告)号：US4786995A
公开(公告)日：1988-11-22
申请号：US927916
申请日：1986-11-06
CPC分类号： G11B19/2081 , G11B21/12
摘要： An automatic head retract system for a disk drive is disclosed which operates in response to electric power turn off to retract the heads to a landing zone on the disk surface. The heads are retracted by operating a positioner motor under the control of logic internal to the disk drive unit without intervention by a host computer. The positioner motor comprises a multiphase DC brushless motor which, after power loss, is supplied with current from a capacitor charged during normal drive usage and by the back EMF of a spindle motor. A latch mechanically locks the heads in the landing zone.
摘要翻译： 公开了一种用于磁盘驱动器的自动磁头缩回系统，其响应于电力关闭而操作，以将磁头缩回到盘表面上的着陆区域。 在通过主机计算机的干预的情况下，通过在磁盘驱动器单元内部的逻辑控制下操作定位器电动机来使磁头缩回。 定位电动机包括一个多相直流无刷电动机，在断电后，从正常驱动使用期间充电的电容器和主轴电动机的反电动势供给电流。 闩锁将头部机械地锁定在着陆区域中。
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公开(公告)号：US4578625A
公开(公告)日：1986-03-25
申请号：US563958
申请日：1983-12-21
申请人： Ara W. Nazarian , Donald G. Stupeck
发明人： Ara W. Nazarian , Donald G. Stupeck
CPC分类号： H02P23/16 , Y10S388/912
摘要： Disclosed is a rotational speed control system for comparing the rotational speed of a rotating disk as indicated by index pulses occurring one or more times per revolution of the disk, with a reference time representing the desired time between successive index pulses. The system employs logic circuitry external to any microprocessor control system employed by the rotating disk system. The reference time may be supplied by counters counting externally supplied clock pulses to a fixed value. The speed control system provides a speed up command or slow down command in a manner proportional to the speed error to the disk drive motor where the time between successive index pulses is greater or less, respectively, than the reference time.
摘要翻译： 公开了一种转速控制系统，用于比较旋转盘的旋转速度，如旋转盘旋转一次或多次的指标脉冲所示，参考时间表示连续的指标脉冲之间的期望时间。 该系统采用由旋转盘系统采用的任何微处理器控制系统外部的逻辑电路。 参考时间可以由计数外部提供的时钟脉冲的计数器提供给固定值。 速度控制系统以与参考时间分别大于或等于连续的索引脉冲之间的时间的速度误差与盘驱动马达成比例的方式提供加速命令或减速命令。
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5.发明授权Method for establishing and maintaining radial position for hard disk drive self servo write without seed wedges 失效用于建立和保持硬盘驱动器自动伺服写入的径向位置的方法，无需种子楔形公开(公告)号：US07826167B2
公开(公告)日：2010-11-02
申请号：US12272482
申请日：2008-11-17
CPC分类号： G11B5/59688 , G11B5/59638 , G11B5/59666
摘要： Magnetic reference patterns may be generated on a disk or other magnetic media without the need for seed wedges. This involves writing a first magnetic reference pattern to the disk with a servo writer. The disk may then be transferred to a hard disk drive. Control circuitry within the hard disk drive may recognize the first magnetic reference pattern and then position a RW head within the hard disk drive based on the first magnetic reference pattern. As the RW drive is accurately positioned based on the first magnetic reference pattern a second magnetic reference pattern may be written to the disk using the RW head. The RW head location is determined based on the velocity and phase between the read-write head and spiral sync marks contained within the first magnetic reference pattern.
摘要翻译： 可以在盘或其他磁性介质上产生磁参考图案，而不需要种子楔。 这涉及用伺服写入器将第一磁参考图形写入盘。 然后可以将磁盘传输到硬盘驱动器。 硬盘驱动器内的控制电路可以识别第一磁性参考图案，然后基于第一磁性参考图案将RW磁头定位在硬盘驱动器内。 由于RW驱动器基于第一磁性参考图案精确地定位，所以可以使用RW磁头将第二磁性参考图案写入磁盘。 基于包含在第一磁参考图案内的读写头和螺旋同步标记之间的速度和相位来确定RW磁头位置。
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6.发明授权公开(公告)号：US07405899B2
公开(公告)日：2008-07-29
申请号：US11405872
申请日：2006-04-18
IPC分类号： G11B5/596
CPC分类号： G11B5/59688
摘要： A method determines RW head radial position relative to tracks within a magnetic data disc. This involves sensing both a S-burst signal and a P-burst signal with the RW head. The S-burst signal and P-burst signal are associated with a two-burst servo pattern on the magnetic disc. The S-burst pattern has a phase that remains constant radially across tracks within the magnetic disc. The P-burst has a second phase that rotates radially across tracks within the magnetic disc. By determining a phase difference between a sensed S-burst signal and P-burst signal, it is possible to determine the RW head radial position relative to the tracks on the magnetic disc.
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7.发明授权Disk drive with feed-forward control path that receives a reference position signal to apply a feed-forward command effort at a rate greater than a servo sampling rate 有权具有前馈控制路径的磁盘驱动器，其接收参考位置信号以以大于伺服采样率的速率施加前馈命令工作公开(公告)号：US06614618B1
公开(公告)日：2003-09-02
申请号：US09538931
申请日：2000-03-31
申请人： Edgar D. Sheh , Thao P. Trieu , Ara W. Nazarian , Richard K. Wong
发明人： Edgar D. Sheh , Thao P. Trieu , Ara W. Nazarian , Richard K. Wong
IPC分类号： G11B5596
CPC分类号： G11B5/59633 , G11B5/5521
摘要： Disclosed is a disk drive having a plant with a moveable transducer and a servo controller that more precisely controls the transducer during short to medium seeks by producing a multi-rate feed-forward command effort signal. The servo controller includes a reference position generator that provides a reference position signal that varies as a function of time along a shaped position profile for moving the transducer from a start position to a target position in a smoothly controlled fashion, a feed-forward control path that receives the reference position signal and applies a feed-forward command effort signal at a feed-forward rate that is greater than the servo sampling rate to move the actuator more closely along the shaped position profile between servo samples; and a feedback control path that receives the reference position signal and the indicated position signal and applies a feedback command effort signal at the servo sampling rate based on a difference between the reference position signal and the indicated position signal to make minor corrections to error remaining after application of prior feed-forward command effort signals.
摘要翻译： 公开了具有具有可移动换能器和伺服控制器的设备的磁盘驱动器，其通过产生多速率前馈命令工作信号来在短到中等搜索期间更精确地控制换能器。 该伺服控制器包括一个参考位置发生器，该基准位置发生器提供一个参考位置信号，该基准位置信号沿着一个成形位置轮廓作为时间的函数变化，用于以平滑控制的方式将换能器从起始位置移动到目标位置;前馈控制路径 其接收参考位置信号并且以大于伺服采样速率的前馈速率施加前馈命令努力信号，以沿着伺服样本之间的成形位置分布更紧密地移动致动器; 以及反馈控制路径，其接收参考位置信号和所指示的位置信号，并且基于参考位置信号和指示位置信号之间的差以伺服采样率施加反馈命令努力信号，以对 应用先前的前馈命令工作信号。
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8.发明授权Disk drive with staggered calibration bursts that are disposably located in data regions and method of using the same for calibrating a read head 失效具有交错校准脉冲串的磁盘驱动器，其一次性位于数据区域中，并且使用该驱动器的方法来校准读取头公开(公告)号：US06198584B1
公开(公告)日：2001-03-06
申请号：US09070945
申请日：1998-04-30
申请人： Raffi Codilian , Ara W. Nazarian , Brian Tanner
发明人： Raffi Codilian , Ara W. Nazarian , Brian Tanner
IPC分类号： G11B509
CPC分类号： G11B5/5534 , G11B5/59655 , G11B5/59683
摘要： A disk drive with a disk having a servo pattern including a special “calibration track” wherein a plurality of staggered calibration burst pairs define null points that are radially shifted from a burst pair centerline by precise, predefined, fractional track amounts to collectively provide accurate information about servo signal values generated as a function of real displacement. The staggered calibration bursts beneficially allows for calibrating the PES signal after the drive is removed from the servowriter during a manufacturing phase called Intelligent Burn-In. The staggered calibration bursts are preferably written in data regions so that they are disposable and may be selectively written over with data to maximize storage space. Some or all of the calibration bursts may alternatively be retained for a subsequent recalibration.
摘要翻译： 具有盘的盘驱动器具有包括特殊的“校准轨迹”的伺服模式，其中多个交错的校准脉冲串对定义从脉冲串对中心线径向移位精确的，预定义的分数轨迹量的空点，以共同提供准确的信息 关于作为实际位移的函数产生的伺服信号值。 交错的校准脉冲串有利地允许在称为智能老化的制造阶段从伺服驱动器移除驱动器之后校准PES信号。 交错的校准突发优选地写入数据区域，使得它们是一次性的，并且可以选择性地写入数据以最大化存储空间。 备选地，可以保留部分或全部校准脉冲串用于随后的重新校准。
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9.发明授权Non-quadrature servo burst pattern for micro-jogging a magnetoresistive head in a magnetic disk drive 失效用于在磁盘驱动器中微动磁阻磁头的非正交伺服突发图案
公开(公告)号：US6014283A
公开(公告)日：2000-01-11
申请号：US856670
申请日：1997-05-15
CPC分类号： G11B5/59688 , G11B2005/0016 , G11B5/59655 , G11B5/59683
摘要： A magnetic storage disk drive having a servo burst pattern which asymmetrically increases the linear region in which a read head may be micro-jogged from a burst pair center line to align the read head with a data track. The innovative servo pattern comprises a first pair of servo bursts that define a first burst pair centerline for writing a particular data track to a data track side of the first centerline, and a second pair of servo bursts collectively define a second burst pair centerline that is positioned to the data track side of the first burst pair centerline and is sufficiently close to the first burst pair center line so that the read head "sees" the second pair of servo bursts before "losing" the first pair of servo bursts when micro-jogged to the data track side for reading. The second burst pair centerline should be no farther from the first burst pair centerline than the linear read width of the read head. The preferred servo bursts span a full track pitch are arranged in a uniformly repeating pattern of A/B and C/D burst pairs. The first burst pair centerline may be defined by the A/B pairs in one annular disk region and by the C/D burst pairs in another annular disk region in order to asymmetrically expand the linear region in the direction needed for micro-jogging the read head in different directions within the respective annular regions.
摘要翻译： 具有伺服突发图案的磁存储盘驱动器，其不对称地增加读取头可以从脉冲串对中心线微点击以将读取头与数据轨道对准的线性区域。 创新的伺服模式包括第一对伺服突发，其定义用于将特定数据轨迹写入第一中心线的数据轨道侧的第一突发对中心线，第二对伺服脉冲串共同定义第二突发对中心线， 位于第一突发对中心线的数据轨道侧并且足够接近第一突发对中心线，使得读取头在“丢失”第一对伺服脉冲串之前“看到”第二对伺服脉冲串， 慢跑到数据轨道侧进行阅读。 第二个突发对中心线应该不比第一个突发对中心线远离读取头的线性读取宽度。 以A / B和C / D突发对的均匀重复模式布置跨越全轨道间距的优选伺服突发。 第一突发对中心线可以由一个环形盘区域中的A / B对和另一个环形盘区域中的C / D突发对来限定，以便在读取微步数所需的方向上不对称地扩展线性区域 在各个环形区域内以不同的方向头部。
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10.发明授权Method of seamlessly recording circumferentially successive servo bursts that overlap one another 失效无缝地记录彼此重叠的周向连续的伺服脉冲串的方法
公开(公告)号：US5946157A
公开(公告)日：1999-08-31
申请号：US895248
申请日：1997-07-21
申请人： Raffi Codilian , Timothy Elliott , Ara W. Nazarian , Brian Tanner
发明人： Raffi Codilian , Timothy Elliott , Ara W. Nazarian , Brian Tanner
CPC分类号： G11B5/59633 , G11B5/59655 , G11B5/59683
摘要： The invention relates generally to rotating magnetic storage disk drive and, more particularly, to a method of seamlessly recording circumferentially overlapping servo bursts on a magnetic disk with successive passes of a write head that is guided by a servo track writer wherein the servo bursts are contained in at least two servo burst groups that each have at least one circumferential burst position which may contain a servo burst. The method comprises the steps of turning a write current ON while passing the write head over a current ramp region that does not contain servo data and is located in front of an "active" servo burst group that will be modified on this pass, modifying a servo burst in at least one circumferential position of the active servo burst group with the write current ON; turning the write current OFF while passing the write head over a current ramp region that does not contain servo data and is located in front of a "passive" servo burst group that will not be modified on this pass; and skipping over at least one circumferential burst position of the passive servo burst group with the write current OFF.
摘要翻译： 本发明一般涉及旋转磁存储盘驱动器，更具体地，涉及一种在磁盘上无缝地记录周向重叠的伺服脉冲串的方法，其中连续通过由伺服磁道写入器引导的写入头，其中包含伺服脉冲串 在至少两个伺服脉冲串组中，每个具有可包含伺服脉冲串的至少一个周期脉冲串位置。 该方法包括以下步骤：在写入头通过不包含伺服数据的电流斜坡区域并且位于将在该通路上被修改的“主动”伺服脉冲串组的前面时转动写入电流， 伺服脉冲串在有效伺服脉冲串组的至少一个圆周位置上写入电流ON; 在写入头通过不包含伺服数据的电流斜坡区域并且位于在该通过时将不被修改的“被动”伺服脉冲串组的前面时，转动写入电流OFF; 并且在写入电流OFF的情况下跳过被动伺服脉冲串组的至少一个圆周脉冲串位置。
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