公开(公告)号：US20110141601A1

公开(公告)日：2011-06-16

申请号：US13031590

申请日：2011-02-21

申请人： Richard M. EHRLICH ,  Craig L. Tomita

发明人： Richard M. EHRLICH ,  Craig L. Tomita

IPC分类号： G11B27/36

CPC分类号： G11B5/6005 ,  G11B20/10009 ,  G11B20/10203 ,  G11B20/10351 ,  G11B27/36 ,  G11B2220/2516

摘要： Touchdown between a read/write head of disk drive and a recording medium is detected based on the variance in the frequency domain of position error signals (PES), each of which is measured after incrementally positioning the read/write head closer to the recording medium, from a baseline PES. The synchronous portion of the baseline PES is quantified and removed from the baseline PES and subsequent PES measurements to remove the effect of the synchronous portion of the baseline PES. The non-synchronous portion of the PES measured at a particular read/write head position may also be removed by synchronously averaging multiple PES measurements for each read/write head position. Detection of touchdown may be based on the rate of change of the variance in the frequency domain of PES relative to a baseline PES, instead of the absolute value of the variance.

公开(公告)号：US20140164675A1

公开(公告)日：2014-06-12

申请号：US13707505

申请日：2012-12-06

申请人： Richard M. EHRLICH ,  Eric R. DUNN ,  Fernando A. ZAYAS ,  Thorsten SCHMIDT

发明人： Richard M. EHRLICH ,  Eric R. DUNN ,  Fernando A. ZAYAS ,  Thorsten SCHMIDT

IPC分类号： G06F12/02

CPC分类号： G06F3/061 ,  G06F3/0614 ,  G06F3/0646 ,  G06F3/0659 ,  G06F3/0679 ,  G06F3/068 ,  G06F9/4418 ,  G06F12/0246 ,  G06F2212/217 ,  G06F2212/7202

摘要： A hybrid drive and associated methods provide low-overhead storage of a hibernation file in the hybrid hard disk drive. During operation, the hybrid drive allocates a portion of solid-state memory in the drive that is large enough to accommodate a hibernation file associated with a host device of the hybrid drive. In addition to the erased memory blocks that are normally present during operation of the hybrid drive, the portion of solid-state memory allocated for accommodating the hibernation file may include over-provisioned memory blocks, blocks used to store a previous hibernation file that has been trimmed, and/or non-dirty blocks.

摘要翻译： 混合驱动器和相关方法在混合硬盘驱动器中提供休眠文件的低开销存储。 在操作期间，混合驱动器将驱动器中的一部分固态存储器分配到足够大以容纳与混合驱动器的主机设备相关联的休眠文件。 除了在混合驱动器的操作期间通常存在的擦除的存储器块之外，分配用于容纳休眠文件的固态存储器的部分可以包括过度供应的存储器块，用于存储先前的休眠文件的块 修剪和/或非脏块。

公开(公告)号：US20120275046A1

公开(公告)日：2012-11-01

申请号：US13095578

申请日：2011-04-27

申请人： Richard M. EHRLICH

发明人： Richard M. EHRLICH

IPC分类号： G11B5/02 ,  G11B5/86

CPC分类号： G06F3/068 ,  G06F3/0613 ,  G06F3/0659

摘要： A hybrid disk drive transfers a data stream to or from a host at an increased data transfer rate by time-multiplexing the data-carrying capacity of the system bus connecting the host and the disk drive. A portion of the data stream is stored on a non-volatile solid state memory device in the disk drive and a portion is written to a magnetic storage disk. The portion of the data stream written to the storage disk may be written on data tracks that are separated by empty data tracks corresponding to the data stored in the non-volatile solid state memory device.

摘要翻译： 混合磁盘驱动器通过时间复用连接主机和磁盘驱动器的系统总线的数据承载能力，以增加的数据传输速率将数据流传送到主机或从主机传送数据流。 数据流的一部分存储在磁盘驱动器中的非易失性固态存储器件上，并将一部分写入磁存储盘。 写入存储盘的数据流的部分可以被写入由与存储在非易失性固态存储器件中的数据相对应的空数据轨迹分隔的数据轨道上。

公开(公告)号：US20110242955A1

公开(公告)日：2011-10-06

申请号：US13160449

申请日：2011-06-14

申请人： Richard M. EHRLICH ,  Craig L. TOMITA

发明人： Richard M. EHRLICH ,  Craig L. TOMITA

IPC分类号： G11B27/36

CPC分类号： G11B5/6005 ,  G11B20/10009 ,  G11B20/10203 ,  G11B20/10351 ,  G11B27/36 ,  G11B2220/2516

摘要： Touchdown between a read/write head of disk drive and a recording medium is detected based on the variance in the frequency domain of position error signals (PES), each of which is measured after incrementally positioning the read/write head closer to the recording medium, from a baseline PES. The synchronous portion of the baseline PES is quantified and removed from the baseline PES and subsequent PES measurements to remove the effect of the synchronous portion of the baseline PES. The non-synchronous portion of the PES measured at a particular read/write head position may also be removed by synchronously averaging multiple PES measurements for each read/write head position. Detection of touchdown may be based on the rate of change of the variance in the frequency domain of PES relative to a baseline PES, instead of the absolute value of the variance.

摘要翻译： 基于位置误差信号（PES）的频域中的方差检测磁盘驱动器的读/写磁头和记录介质之间的触地，每个位置误差信号（PES）在将读/写头更靠近记录介质 ，从基线PES。 基线PES的同步部分被量化并从基线PES和随后的PES测量中去除以消除基线PES的同步部分的影响。 在特定读/写头位置测量的PES的非同步部分也可以通过对于每个读/写头位置同步平均多个PES测量来去除。 触地的检测可以基于PES相对于基线PES的频域方差的变化率而不是方差的绝对值。

公开(公告)号：US20100246056A1

公开(公告)日：2010-09-30

申请号：US12414498

申请日：2009-03-30

申请人： Richard M. EHRLICH ,  Anton L. GERASIMOV

发明人： Richard M. EHRLICH ,  Anton L. GERASIMOV

IPC分类号： G11B5/596

CPC分类号： G11B5/59627

摘要： In a disk drive, a wedge-based scheme is used to determine wedge offset correction values for a track of the disk drive. Correction values for the offset of each servo wedge are calculated wedge-by-wedge, based on the position error signal (PES) of the most recently measured servo wedge in combination with the measured PES of other servo wedges. To minimize transport delay of the servo, the majority of servo-control calculations may be pre-calculated prior to measuring the PES at the current wedge. Wedge offset correction values for a given servo wedge are corrected iteratively with each revolution of the storage disk.

摘要翻译： 在磁盘驱动器中，使用基于楔形的方案来确定磁盘驱动器的轨道的楔形偏移校正值。 基于最近测量的伺服楔的位置误差信号（PES）与其他伺服楔的测量的PES结合，逐楔计算每个伺服楔的偏移的校正值。 为了最小化伺服的传输延迟，在测量当前楔形件之间的PES之前，可以预先计算大部分伺服控制计算。 对于给定的伺服楔的楔形偏移校正值在存储盘的每次旋转时被迭代地校正。

公开(公告)号：US20130242425A1

公开(公告)日：2013-09-19

申请号：US13423083

申请日：2012-03-16

申请人： Fernando A. ZAYAS ,  Richard M. EHRLICH ,  Eric R. DUNN

发明人： Fernando A. ZAYAS ,  Richard M. EHRLICH ,  Eric R. DUNN

IPC分类号： G11B5/86 ,  G06F12/02

CPC分类号： G06F3/0611 ,  G06F3/064 ,  G06F3/0647 ,  G06F3/068 ,  G06F12/0804 ,  G06F12/0868 ,  G06F2212/1024 ,  G06F2212/217 ,  G06F2212/222 ,  G06F2212/253 ,  G06F2212/281 ,  G06F2212/305 ,  G06F2212/313 ,  G06F2212/461 ,  G06F2212/70 ,  G11B5/012 ,  G11B20/10 ,  G11B20/12 ,  G11B2020/1294 ,  G11B2220/45

摘要： A hybrid drive and associated methods increase the rate at which data are transferred to a nonvolatile storage medium in the hybrid drive. By using a large nonvolatile solid state memory device as cache memory for a magnetic disk drive, a very large number of write commands can be cached and subsequently reordered and executed in an efficient manner. In addition, strategic selection and reordering of only a portion of the write commands stored in the nonvolatile solid state memory device increases efficiency of the reordering process.

摘要翻译： 混合驱动器和相关联的方法增加了将数据传输到混合驱动器中的非易失性存储介质的速率。 通过使用大型非易失性固态存储器件作为磁盘驱动器的高速缓冲存储器，可以高效地高速缓存并且随后重新排序和执行非常大量的写入命令。 此外，仅存储在非易失性固态存储器件中的一部分写入命令的策略选择和重新排序提高了重排序过程的效率。