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1. 发明授权

US06577463B1 Tangential misalignment precompensation in a direct access storage device 失效
标题翻译：直接访问存储设备中的切向未对准预补偿
公开(公告)号：US06577463B1
公开(公告)日：2003-06-10
申请号：US09561253
申请日：2000-04-27
申请人： Gregory Michael Frees , Kirk Barrows Price , Louis Joseph Serrano , Mantle Man-Hon Yu
发明人： Gregory Michael Frees , Kirk Barrows Price , Louis Joseph Serrano , Mantle Man-Hon Yu
IPC分类号： G11B509
CPC分类号： G11B5/59655
摘要： A system and method for precompensating for tangential misalignment in a direct access storage device adjusts a SID timing window individually for every track or surface of the direct access storage device. The system and method generate a calculation of the tangential misalignment and adjust, in accordance with the calculation of tangential misalignment, a timing window during which the transducer head reads the information located on the storage surface. The calculation of tangential misalignment may be the result of a direct measurement of the tangential misalignment, or may be converted from radial misalignment data. The adjustment of the timing window may comprise opening the timing window an amount depending upon the degree of misalignment of each track, and may comprise shifting the window in time either forward or backward depending upon the nature of the calculated misalignment.
摘要翻译：在直接存取存储设备中用于预补偿切向不对准的系统和方法针对直接存取存储设备的每个轨迹或表面单独地调整SID定时窗口。该系统和方法产生切向未对准的计算，并且根据切线未对准的计算调整换能器头读取位于存储表面上的信息的定时窗口。切向不对准的计算可能是直接测量切线未对准的结果，或者可以从径向未对准数据转换。定时窗口的调节可以包括根据每个轨道的未对准程度来打开定时窗口，并且可以包括根据所计算的未对准的性质向前或向后移动窗口。

2. 发明授权

US06188191B1 Servo system responsive to temperature changes 失效
标题翻译：伺服系统响应温度变化
公开(公告)号：US06188191B1
公开(公告)日：2001-02-13
申请号：US09303912
申请日：1999-05-03
申请人： Gregory Michael Frees , Louis Joseph Serrano
发明人： Gregory Michael Frees , Louis Joseph Serrano
IPC分类号： G05B501
CPC分类号： G11B5/59644 , G11B5/5547
摘要： A disk drive system includes a servo system for driving mechanical parts, including a read/write head, to a desired track on a disk. The mechanical parts undesirably resonate at a frequency f, where f is a function of a temperature t of those mechanical parts. The servo system includes a notch filter responsive to an indication of temperature t, to attenuate the amplitude of frequency f in a broadband control signal that is applied to move the mechanical parts.
摘要翻译：磁盘驱动器系统包括用于将包括读/写头的机械部件驱动到盘上期望的轨道的伺服系统。机械部件以频率f不期望地共振，其中f是这些机械部件的温度t的函数。伺服系统包括响应于温度t的指示的陷波滤波器，以衰减用于移动机械部件的宽带控制信号中的频率f的振幅。

3. 发明授权

US06522493B1 Position error signal linearization using an auxiliary discontinuity removal routine 失效
标题翻译：使用辅助不连续删除程序的位置误差信号线性化
公开(公告)号：US06522493B1
公开(公告)日：2003-02-18
申请号：US09300071
申请日：1999-04-27
申请人： Jeff J. Dobbek , Gregory Michael Frees , Craig N. Fukushima , Louis Joseph Serrano , Markus Staudenmann
发明人： Jeff J. Dobbek , Gregory Michael Frees , Craig N. Fukushima , Louis Joseph Serrano , Markus Staudenmann
IPC分类号： G11B2102
CPC分类号： G11B5/59627
摘要： A method, apparatus, and article of manufacture for determining a transducer position in relation to a media surface is described. The method comprises sensing positioning information on the media, measuring a position error signal from the sensed positioning information wherein the position error signal includes first and second position signal components, accessing stored information describing a non-linear relationship between the measured position error signal and the transducer position, and applying the stored relationship to the measured position error signal to produce a corrected position error signal, and determining the transducer position from the corrected position error signal.
摘要翻译：描述了一种用于确定相对于介质表面的换能器位置的方法，装置和制品。该方法包括：感测媒体上的定位信息，根据感测到的定位信息测量位置误差信号，其中位置误差信号包括第一和第二位置信号分量，访问存储的信息，描述所测量的位置误差信号与换能器位置，并且将所存储的关系应用于所测量的位置误差信号以产生校正的位置误差信号，以及根据校正的位置误差信号确定换能器位置。

4. 发明授权

US06429995B1 Position error signal calibration using measured bursts 失效
标题翻译：使用测量脉冲串进行位置误差信号校准
公开(公告)号：US06429995B1
公开(公告)日：2002-08-06
申请号：US09299893
申请日：1999-04-27
申请人： Jeff J. Dobbek , Gregory Michael Frees , Craig N. Fukushima , Louis Joseph Serrano , Blake Finstad
发明人： Jeff J. Dobbek , Gregory Michael Frees , Craig N. Fukushima , Louis Joseph Serrano , Blake Finstad
IPC分类号： G11B5596
CPC分类号： G11B5/59655
摘要： A method, apparatus, and an article of manufacture for calibrating a position error signal for controlling the position of a read transducer with respect to a storage media having positioning information written at a location thereon. In one embodiment, the invention is embodied in a method comprising determining a relationship between a read transducer position and the positioning information by measuring the positioning information while passing the read transducer across the location, determining a measured position error signal from the measured positioning information, and computing a relationship between the measured position error signal and the read transducer position.
摘要翻译：一种用于校准位置误差信号的方法，装置和制品，用于控制读取换能器相对于具有写入其上的位置的定位信息的存储介质的位置。在一个实施例中，本发明体现在一种方法中，包括通过在将读取的换能器穿过位置通过测量定位信息来确定读取换能器位置与定位信息之间的关系，从测量的定位信息确定测量的位置误差信号，并计算所测量的位置误差信号和读取换能器位置之间的关系。

5. 发明授权

US6122125A Head selectable servo notch filter and method for improving servo system performance 失效
标题翻译：磁头选择伺服陷波滤波器及提高伺服系统性能的方法
公开(公告)号：US6122125A
公开(公告)日：2000-09-19
申请号：US919857
申请日：1997-08-28
申请人： Donald Lee Clare , Gregory Michael Frees , Louis Joseph Serrano
发明人： Donald Lee Clare , Gregory Michael Frees , Louis Joseph Serrano
IPC分类号： G11B5/48 , G11B5/55 , G11B5/596 , G11B21/08 , G11B5/035
CPC分类号： G11B21/083 , G11B5/4813 , G11B5/4886 , G11B5/5582 , G11B5/59622
摘要： A notch filter for a disk drive servo system is disclosed having selectable filtering capability. Different servo notch filters for different heads in the actuator head stack are provided. The notch filters may be selected to remove different resonant modes associated with the different disk drive heads. Each of the plurality of notch filters is tuned to remove a resonant frequency associated with at least one magnetic head of the disk drive. In operation, a notch filter is selected to remove a resonant frequency associated with a magnetic head commanded to write or read data to or from the disk drive. The notch filter system includes a multiplexor for controlling the selection of the notch filters. The multiplexor receives commands from a servo processor to control the selection of a notch filter. Different notch filters can be utilized, including series tapped notch filters or parallel notch filters. The notch filters are run continuously to avoid transients resulting from initialization of the notch filters.
摘要翻译：公开了一种用于磁盘驱动器伺服系统的陷波滤波器，具有可选择的滤波能力。提供了用于执行器头部堆叠中不同头部的不同伺服陷波滤波器。可以选择陷波滤波器以去除与不同磁盘驱动器磁头相关联的不同谐振模式。调整多个陷波滤波器中的每一个以去除与盘驱动器的至少一个磁头相关联的谐振频率。在操作中，选择陷波滤波器以去除与磁头相关联的谐振频率，该磁头被命令向磁盘驱动器写入或读取数据。陷波滤波器系统包括用于控制陷波滤波器的选择的多路复用器。多路复用器从伺服处理器接收命令以控制陷波滤波器的选择。可以使用不同的陷波滤波器，包括串联抽头陷波滤波器或并行陷波滤波器。陷波滤波器连续运行，以避免由陷波滤波器初始化引起的瞬变。

6. 发明授权

US06426843B1 Settle time estimator feedback for rotational position reordering in data storage devices 失效
标题翻译：数据存储设备中旋转位置重新排序的定时估计器反馈
公开(公告)号：US06426843B1
公开(公告)日：2002-07-30
申请号：US09300070
申请日：1999-04-27
申请人： Bernd Lamberts , Louis Joseph Serrano , Mantle Man-Hon Yu
发明人： Bernd Lamberts , Louis Joseph Serrano , Mantle Man-Hon Yu
IPC分类号： G11B2102
CPC分类号： G11B21/02 , G11B5/5521
摘要： A method, apparatus, and article of manufacture for rotational position reordering of queued commands in a data storage device based on settle time estimator feedback. An initial settle time estimation is programmed into a servo controller for the data storage device. As data operations are performed in the data storage device, an actual settle time is measured for the data operations, generally through the use of a timer in the servo controller. The settle time estimation is then modified based on the actual settle time and the data operations are reordered or scheduled based on the settle time estimation. Specifically, the settle time estimation is adjusted based on a success rate for the data operations, wherein the success rate comprises a comparison of the actual settle time versus the settle time estimation. A first delta value is subtracted from the settle time estimation when the settle time estimation is greater than the actual settle time, and a second delta value is added to the settle time estimation when the settle time estimation is less than the actual settle time. Different settle time estimations may be used depending on various characteristics, i.e., settle time estimations differ for different transducers in the data storage device, according to a type of seek operation, according to a seek direction, according to a track location, and according to seek length.
摘要翻译：基于结算时间估计器反馈的数据存储装置中的排队命令的旋转位置重新排序的方法，装置和制品。初始定时估计被编程到用于数据存储设备的伺服控制器中。由于在数据存储装置中执行数据操作，因此通常通过在伺服控制器中使用定时器来测量数据操作的实际结算时间。然后，基于实际的结算时间来修改定时时间估计，并且基于确定时间估计重新排序或调度数据操作。具体地，基于数据操作的成功率来调整结算时间估计，其中成功率包括实际结算时间与结算时间估计的比较。当结算时间估计大于实际结算时间时，从结算时间估计中减去第一Δ值，并且当结算时间估计小于实际结算时间时，将第二增量值加到结算时间估计中。可以根据各种特征使用不同的结算时间估计，即，根据搜索方式，根据搜索方向，根据轨道位置，并且根据搜索方式，根据搜索操作的类型，数据存储设备中的不同换能器的安息时间估计不同寻求长度。

7. 发明授权

US06342985B1 Method and apparatus for improving disk drive seek performance 失效
标题翻译：改善磁盘驱动器寻求性能的方法和装置
公开(公告)号：US06342985B1
公开(公告)日：2002-01-29
申请号：US09153504
申请日：1998-09-15
申请人： Donald Lee Clare , Troy Tse-Quong Lee , Louis Joseph Serrano
发明人： Donald Lee Clare , Troy Tse-Quong Lee , Louis Joseph Serrano
IPC分类号： G11B2102
CPC分类号： G11B21/083
摘要： A system and method for compensation for variation in a voice coil motor's torque factor due to changes in temperature to improve the seek performance of a disk drive. The method uses the numerical relationship between change in torque factor and change in temperature (G) for the voice coil motor, combined with torque factor KT and temperature at/near the voice coil motor measured at a first time (for example during the initial start-up of the disk drive during the automatic recalibrations that is performed during a start-up, (KT RECAL) and (TRECAL) respectively). These KRECAL and TRECAL can be stored in memory. At some later predetermined interval or event, the temperature at or near the voice coil motor is again measured (TEVENT). From these known temperature and torque factor parameters, in combination with the known relationship between temperature and torque factor for the voice coil motor, the KT at the future time/event (KT EVENT) can be calculated. This new KT EVENT has been adjusted for temperature and can now be used in the seek algorithm in place of the original KT RECAL which results in more optimal seek performance.
摘要翻译：一种用于补偿由于温度变化引起的音圈电机扭矩因素变化的系统和方法，以改善磁盘驱动器的寻道性能。该方法使用音圈电机的转矩因数变化和温度变化（G）之间的数值关系，结合扭矩因子KT和第一次测量的音圈电机/附近的温度（例如初始开始时）在启动期间（KT RECAL）和（TRECAL）期间执行的自动重新校准期间的磁盘驱动器的-up。这些KRECAL和TRECAL可以存储在内存中。在稍后的预定间隔或事件处，再次测量音圈电机处或附近的温度（TEVENT）。根据这些已知的温度和转矩因数参数，结合音圈电机的温度和转矩系数之间已知的关系，可以计算未来时间/事件（KT EVENT）下的KT。这个新的KT EVENT已经调整了温度，现在可以在寻找算法中使用，代替原始的KT RECAL，这样可以获得更优化的搜索性能。

8. 发明授权

US6088188A System and method for determining when hard disk drive power amplifier is saturated 失效
标题翻译：确定何时硬盘驱动器功率放大器饱和的系统和方法
公开(公告)号：US6088188A
公开(公告)日：2000-07-11
申请号：US798529
申请日：1997-02-10
申请人： Louis Joseph Serrano , Mantle Man-Hon Yu
发明人： Louis Joseph Serrano , Mantle Man-Hon Yu
IPC分类号： G11B21/02 , G11B5/55 , G11B21/08 , G11B5/596
CPC分类号： G11B21/083 , G11B5/5534 , G11B5/5547
摘要： In a hard disk drive, a head actuator periodically is caused to undertake a calibration seek such that the power amplifier that energizes the head actuator is saturated. The predicted distance moved by the head during the calibration seek is compared to the actual distance moved, and the ratio of the two distances is then used to determine the saturation current of the power amplifier. For a subsequent seek, if the saturation current is less than the current requested for the subsequent seek, the saturation current is input into the head position prediction model. Otherwise, the requested current is used.
摘要翻译：在硬盘驱动器中，周期性地引导头致动器进行校准寻求，使得激励头致动器的功率放大器饱和。将在校准寻找期间头部移动的预测距离与移动的实际距离进行比较，然后使用两个距离的比率来确定功率放大器的饱和电流。对于随后的寻找，如果饱和电流小于随后寻找所请求的电流，则饱和电流被输入到头部位置预测模型中。否则，使用请求的电流。

9. 发明授权

US5963393A Servo-free velocity estimator for coil driven actuator arm in a data storage drive 失效
标题翻译：数据存储驱动器中线圈驱动执行器臂的无伺服速度估计器
公开(公告)号：US5963393A
公开(公告)日：1999-10-05
申请号：US32286
申请日：1998-02-26
申请人： Bryan S. Rowan , Louis Joseph Serrano
发明人： Bryan S. Rowan , Louis Joseph Serrano
IPC分类号： G11B5/55 , G11B21/08 , G11B33/10
CPC分类号： G11B5/5547 , G11B21/081 , G11B21/083 , G11B5/5534 , G11B33/10
摘要： A system and method for determining the velocity and/or position of a coil driven actuator arm without the aid of servo signals. A sample-hold unit is used to measure no-motion coil voltage in the voice motor coil while applying a predetermined coil current. Then, while the same magnitude (opposite direction) current is applied to move the actuator arm, the coil voltage is measured. The coil voltage is reduced by the measured no-motion coil voltage, producing a measurement of back-emf. The back-emf may be amplified by a predetermined factor to yield an estimation of velocity, and this amount may be integrated to provide a gauge of relative actuator arm position.
摘要翻译：用于通过伺服信号确定线圈驱动的致动器臂的速度和/或位置的系统和方法。采样保持单元用于在施加预定的线圈电流的同时测量语音电机线圈中的不动作线圈电压。然后，当施加相同的幅度（相反方向）电流来移动致动器臂时，测量线圈电压。线圈电压通过测量的无运动线圈电压降低，产生反电动势的测量。反电动势可以通过预定的因子放大以产生速度的估计，并且该量可以被积分以提供相对致动器臂位置的量规。

10. 发明授权

US06788489B1 Employing off-track capability in data access operations in a direct access storage device 失效
标题翻译：在直接访问存储设备中采用数据访问操作的偏离能力
公开(公告)号：US06788489B1
公开(公告)日：2004-09-07
申请号：US09567473
申请日：2000-05-09
申请人： Thomas Young Chang , Louis Joseph Serrano
发明人： Thomas Young Chang , Louis Joseph Serrano
IPC分类号： G11B5596
CPC分类号： G11B21/083 , G11B5/5547
摘要： A direct access storage device (DASD) employs head-specific off-track read capability (OTRC) in data access operations. A method of operation of the DASD involves providing within the DASD a rotating data storage medium and one or more read heads positionable for interaction with the data storage medium. The OTRC particular to each read head is determined and then applied in accessing data from the data storage medium. One manner of applying the OTRC to access data is to use the OTRC in scheduling random queued seeks. The OTRC for a head is referenced within buffer memory and applied to determine which target data can be accessed most quickly. The seeks are scheduled accordingly. A single table with a nominal seek time can be used for all heads, with a custom adder being added for each particular head. The OTRC can also be applied to alter the seek algorithm. That is, a given seek operation can be conducted more aggressively where the head involved has more favorable OTRC and less aggressively where a head with a less favorable OTRC is involved.
摘要翻译：直接访问存储设备（DASD）在数据访问操作中使用头专用的远程读取能力（OTRC）。 DASD的操作方法涉及在DASD内提供旋转数据存储介质和可定位用于与数据存储介质交互的一个或多个读取头。确定每个读取头特定的OTRC，然后应用于从数据存储介质访问数据。应用OTRC访问数据的一种方式是使用OTRC调度随机排队的查询。用于头的OTRC在缓冲存储器中引用，并应用于确定哪些目标数据可以被最快地访问。寻求的安排是相应的。具有标称搜索时间的单个表格可以用于所有头部，并为每个特定头部添加一个自定义加法器。 OTRC也可以应用于改变搜索算法。也就是说，如果涉及的头部具有更好的OTRC，并且在涉及不太有利的OTRC的头部的情况下，可以更积极地进行给定的寻求操作。

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