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    • 7. 发明授权
    • Settle time estimator feedback for rotational position reordering in data storage devices
    • 数据存储设备中旋转位置重新排序的定时估计器反馈
    • US06426843B1
    • 2002-07-30
    • US09300070
    • 1999-04-27
    • Bernd LambertsLouis Joseph SerranoMantle Man-Hon Yu
    • Bernd LambertsLouis Joseph SerranoMantle Man-Hon Yu
    • G11B2102
    • G11B21/02G11B5/5521
    • 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.
    • 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。
    • 8. 发明授权
    • Method, system, and program for reordering a queue of input/output (I/O) commands into buckets defining ranges of consecutive sector numbers in a storage medium and performing iterations of a selection routine to select and I/O command to execute
    • 用于将输入/输出(I / O)命令的队列重新排序到存储介质中定义连续扇区号的范围的桶中并执行选择例程的迭代以及执行I / O命令的方法,系统和程序
    • US06272565B1
    • 2001-08-07
    • US09282348
    • 1999-03-31
    • Bernd Lamberts
    • Bernd Lamberts
    • G06F1300
    • G06F3/0613G06F3/0659G06F3/0676
    • Disclosed is a system, method, and program for selecting an input/output (I/O) command in a queue of I/O commands. Each I/O command operates within a range of addressable locations on a storage medium. Each addressable location is defined according to a sector number and track number. The program makes use of a plurality of buckets, wherein each bucket represents a range of consecutive sector numbers. Each queued I/O command is associated with a bucket such that a sector number of an addressable location in which an I/O command operates is within the range of sectors comprising the associated bucket. A reference position is determined. A selection routine is then executed to select an I/O command. The selection routine selects a bucket including at least one I/O command and selects an I/O command within the selected bucket. The routine then determines whether the selected I/O command meets a selection criteria. The routine indicates the selected I/O command as the I/O command to process. Another iteration of the selection routine is performed after determining that the selected I/O command does not meet the selection criteria.
    • 公开了用于在I / O命令的队列中选择输入/输出(I / O)命令的系统,方法和程序。 每个I / O命令在存储介质上的可寻址位置范围内运行。 每个可寻址位置根据扇区号和轨道号进行定义。 该程序利用多个桶,其中每个桶表示连续扇区号的范围。 每个排队的I / O命令与桶相关联,使得I / O命令操作的可寻址位置的扇区号在包括相关联的桶的扇区的范围内。 确定参考位置。 然后执行选择例程以选择I / O命令。 选择例程选择包括至少一个I / O命令的桶,并选择所选择的桶内的I / O命令。 然后该例程确定所选择的I / O命令是否满足选择标准。 该例程将所选择的I / O命令指定为要处理的I / O命令。 在确定所选择的I / O命令不符合选择标准之后执行选择例程的另一次迭代。
    • 9. 发明授权
    • Write element before read element with early servo termination on write
    • 在读取元件之前写入元素,并在写入时提早伺服终止
    • US07551379B2
    • 2009-06-23
    • US11545830
    • 2006-10-10
    • Mantle YuBernd Lamberts
    • Mantle YuBernd Lamberts
    • G11B5/09
    • G11B23/36G11B5/3967G11B5/59633G11B19/02
    • Embodiments of the present invention provide a magnetic disk drive system in which the write element leads the read element in the tangential direction of rotation of the magnetic disk. In addition, the servo sector information is preferably arranged such that information that is not needed for write operation is placed at the end of the servo sector. In this way, the servo read operation can be terminated sooner and the write operation can initiate sooner after going over the servo sector. The write element in a write operation writes data to the data sector of a track until an end of the data sector before reaching a front end of a servo sector following the end of the data sector. The read element reads information in the servo sector needed for the write operation. The write element starts writing data in a next data sector following the servo sector after the write element reaches the next data sector and after the read element has read all information in the servo sector needed for the write operation.
    • 本发明的实施例提供一种磁盘驱动系统,其中写入元件沿着磁盘的切向旋转方向引导读取元件。 此外,伺服扇区信息优选地布置成使得写操作不需要的信息被放置在伺服扇区的末端。 以这种方式,可以更快地终止伺服读取操作,并且可以在经过伺服扇区之后更快地启动写入操作。 写操作中的写元件将数据写入轨道的数据扇区,直到数据扇区的末尾,在数据扇区结束之后到达伺服扇区的前端。 读取元件读取写入操作所需的伺服扇区中的信息。 在写入元件到达下一个数据扇区之后以及在读取元件读取写入操作所需的伺服扇区中的所有信息之后,写入元件开始在伺服扇区之后的下一个数据扇区中写入数据。
    • 10. 发明申请
    • USING INDUCTANCE TO MEASURE WRITER SPACING IN PERPENDICULAR MAGNETIC RECORDING
    • 使用电感测量平均磁记录中的写入间距
    • US20080316630A1
    • 2008-12-25
    • US11765650
    • 2007-06-20
    • Bernd LambertsVladimir NikitinJames Terrence Olson
    • Bernd LambertsVladimir NikitinJames Terrence Olson
    • G11B27/36G11B5/17G11B5/33
    • G11B5/1278G11B5/3133G11B5/6064G11B5/607
    • A magnetic data recording system that can directly measure soft underlayer spacing of a perpendicular magnetic write head during operation. The soft underlayer spacing of the magnetic write head can be determined by measuring the magnetic inductance of the write head. The inductance of the write head varies with changes in the distance between the write pole and the soft underlayer of the magnetic medium. By connecting the write head with magnetic inductance measuring circuitry, the soft underlayer spacing can be constantly monitored during operation of the magnetic data recording system. The system can also include active fly height control such as a thermal fly height control capability. By directly measuring the soft underlayer spacing in real time during use of the data recording system, the actively fly height controlling features can be operated efficiently to precisely maintain a desired spacing between the write pole and the soft underlayer of the magnetic medium.
    • 一种磁性数据记录系统,可在操作过程中直接测量垂直磁性写入头的软底层间距。 可以通过测量写头的磁感来确定磁写头的软底层间距。 写头的电感随磁介质的写极和软底层之间的距离变化而变化。 通过将写入头与磁感测量电路连接起来,可以在磁数据记录系统的操作期间不间断地监视软底层间距。 该系统还可以包括主动飞行高度控制,例如热飞行高度控制能力。 通过在使用数据记录系统期间实时地直接测量软底层间距,可以有效地操作主动飞行高度控制特征,以精确地保持磁性介质的写极和软底层之间的期望间隔。