公开(公告)号：US08838841B2

公开(公告)日：2014-09-16

申请号：US13561156

申请日：2012-07-30

申请人： Cyril Guyot ,  Timothy K. Tsai

发明人： Cyril Guyot ,  Timothy K. Tsai

IPC分类号： G06F3/00

CPC分类号： G11B5/5547

摘要： A data storage device accepts read and write commands with absolute command completion times based on queue-depth-of-one (qd=1) execution and stores them in an unsequenced commands memory. These commands are requests to access the data storage device and contain both locations on the storage medium where the data is located and whether the requested operation is read or write. For each pair of first and second commands in the memory, the time between execution of the first command and the second command is calculated and stored. A command selector then reads data from the memory based on a resequencing NCQ algorithm which inserts one or more commands from the command memory into the original qd=1 sequence whenever this insertion will not affect the execution time of commands in the original qd=1 sequence. The resequencing algorithm of the present invention increases IOPS and reduced read head actuator travel and wear.

摘要翻译： 数据存储设备基于队列深度一（qd = 1）执行接收具有绝对命令完成时间的读写命令，并将它们存储在未排序的命令存储器中。 这些命令是访问数据存储设备的请求，并且在数据所在的存储介质上包含两个位置以及请求的操作是被读取还是写入。 对于存储器中的每对第一和第二命令，计算并存储执行第一命令和第二命令之间的时间。 然后，命令选择器基于重新排序的NCQ算法从存储器中读取数据，其将一个或多个命令从命令存储器插入到原始qd = 1序列中，只要该插入不会影响原始qd = 1序列中的命令的执行时间 。 本发明的重新排序算法增加了IOPS并减少了读头致动器行程和磨损。

公开(公告)号：US08793431B2

公开(公告)日：2014-07-29

申请号：US13423178

申请日：2012-03-17

申请人： Zvonimir Z. Bandic ,  Cyril Guyot ,  Tomohiro Harayama ,  Robert Eugeniu Mateescu ,  Shad Henry Thorstenson ,  Timothy Kohchih Tsai

发明人： Zvonimir Z. Bandic ,  Cyril Guyot ,  Tomohiro Harayama ,  Robert Eugeniu Mateescu ,  Shad Henry Thorstenson ,  Timothy Kohchih Tsai

IPC分类号： G06F12/00

CPC分类号： G11B20/10527 ,  G06F12/0866 ,  G06F2212/313 ,  G11B5/012 ,  G11B20/10388 ,  G11B20/1879

摘要： A shingled magnetic recording hard disk drive that uses writeable cache tracks in the inter-band gaps between the annular data bands minimizes the effect of far track erasure (FTE) in the boundary regions of annular data bands caused by writing to the cache tracks. Based on the relative FTE effect for all the tracks in a range of tracks of the cache track being written, a count increment (CI) table or a cumulative count increment (CCI) table is maintained. For every writing to a cache track, a count for each track in an adjacent boundary region, or a cumulative count for each adjacent boundary region, is increased. When the count value for a track, or the cumulative count for a boundary region, reaches a predetermined threshold the data is read from that band and rewritten to the same band.

摘要翻译： 在环形数据带之间的带间间隙中使用可写入高速缓存轨迹的带状磁记录硬盘驱动器将通过写入高速缓存轨道引起的环形数据带的边界区域中的远轨擦除（FTE）的影响最小化。 基于正在写入的高速缓存磁道的磁道范围内的所有磁道的相对FTE效应，保持计数增量（CI）表或累积计数增量（CCI）表。 对于对高速缓存轨道的每次写入，相邻边界区域中的每个轨道的计数或每个相邻边界区域的累积计数增加。 当轨道的计数值或边界区域的累积计数达到预定阈值时，从该频带读取数据并重写到相同的频带。

公开(公告)号：US08599507B2

公开(公告)日：2013-12-03

申请号：US13312979

申请日：2011-12-06

申请人： Marco Sanvido ,  Zvonimir Bandic ,  Yuval Cassuto ,  Jorge Campello De Souza ,  Cyril Guyot ,  Tomohiro Harayama

发明人： Marco Sanvido ,  Zvonimir Bandic ,  Yuval Cassuto ,  Jorge Campello De Souza ,  Cyril Guyot ,  Tomohiro Harayama

IPC分类号： G11B27/36 ,  G11B5/09

CPC分类号： G11B27/36 ,  G11B2220/2516

摘要： A method is described for allowing disk drives, such as shingle-written magnetic recording (SMR) drives, to be shipped for customer use with portions of the magnetic media being left untested. The testing is then completed by the drive self-testing in the field. The drive is made functional at the factory by fully testing at least one operational set of regions including an I-region, an E-region and a write cache region. The operational set of regions works as a separate self-contained virtual disk drive and can be used immediately. The remaining untested areas on the media can be tested in the field by a background task and/or when the first write command is received that requires a new track or operational set of regions (on-the fly testing).

摘要翻译： 描述了一种用于允许磁盘驱动器（例如瓦楞纸磁性记录（SMR）驱动器）被运送以供客户使用的方法，部分磁性介质未被测试。 然后通过本领域的驱动自检来完成测试。 通过完全测试至少一个可操作的I区域，E区域和写入缓存区域的区域，驱动器在工厂生效。 区域的操作集合作为独立的独立虚拟磁盘驱动器，可以立即使用。 可以通过后台任务和/或当接收到需要新的轨迹或操作的一组区域（即时测试）的第一个写入命令时，媒体上剩余的未测试区域可以在现场进行测试。

公开(公告)号：US20130242426A1

公开(公告)日：2013-09-19

申请号：US13423177

申请日：2012-03-17

申请人： Zvonimir Z. Bandic ,  Cyril Guyot ,  Tomohiro Harayama ,  Robert Eugeniu Mateescu ,  Shad Henry Thorstenson ,  Timothy Kohchih Tsai

发明人： Zvonimir Z. Bandic ,  Cyril Guyot ,  Tomohiro Harayama ,  Robert Eugeniu Mateescu ,  Shad Henry Thorstenson ,  Timothy Kohchih Tsai

IPC分类号： G11B27/36

CPC分类号： G11B27/36 ,  G11B5/012 ,  G11B20/1258 ,  G11B20/1816 ,  G11B2020/10898 ,  G11B2020/1298

摘要： A shingled magnetic recording (SMR) hard disk drive (HDD) essentially eliminates the effect of far track erasure (FTE) in the boundary regions of annular data bands caused by writing in the boundary regions of adjacent annular data bands. The extent of the FTE effect is determined for each track within a range of tracks of the track being written. Based on the relative FTE effect for all the tracks in the range, a count increment (CI) table or a cumulative count increment (CCI) table is maintained for all the tracks in the range. For every writing to a track in a boundary region, a count for each track in an adjacent boundary region, or a cumulative count for the adjacent boundary region, is increased. When the count reaches a predetermined threshold the data is read from that band and rewritten to the same band.

摘要翻译： 磁带录音（SMR）硬盘驱动器（HDD）基本上消除了在相邻环形数据频带的边界区域中写入引起的环形数据频带的边界区域中的远跟踪擦除（FTE）的影响。 对正在写入的轨道的轨道范围内的每个轨道确定FTE效果的程度。 基于该范围内所有轨道的相对FTE效应，对该范围内的所有轨道维持计数增量（CI）表或累积计数增量（CCI）表。 对于对边界区域中的轨迹的每次写入，相邻边界区域中的每个轨道的计数或相邻边界区域的累积计数增加。 当计数达到预定阈值时，从该频带读取数据并重写到相同的频带。

公开(公告)号：US20130194864A1

公开(公告)日：2013-08-01

申请号：US13361905

申请日：2012-01-30

申请人： Zvonimir Z. Bandic ,  Luiz M. Franca-Neto ,  Cyril Guyot ,  Robert Eugeniu Mateescu

发明人： Zvonimir Z. Bandic ,  Luiz M. Franca-Neto ,  Cyril Guyot ,  Robert Eugeniu Mateescu

IPC分类号： G11C16/10

CPC分类号： G11C16/0483 ,  G11C11/5628 ,  G11C11/5678 ,  G11C13/0035 ,  G11C13/0069 ,  G11C16/3418 ,  G11C16/349 ,  G11C17/146 ,  G11C2013/0076

摘要： A method and apparatus are provided for implementing enhanced performance for multi-level cell (MLC) memory using threshold-voltage-drift or resistance-drift tolerant moving baseline memory data encoding. A voltage baseline of a prior write is identified, and a data write uses the threshold-voltage-drift or resistance-drift tolerant moving baseline memory data encoding for data being written to the MLC memory responsive to the identified voltage baseline.

摘要翻译： 提供了一种使用阈值电压漂移或电阻漂移容许移动基线存储器数据编码来实现多电平单元（MLC）存储器的增强性能的方法和装置。 识别先前写入的电压基线，并且数据写入使用阈值电压漂移或电阻漂移容许移动基线存储器数据编码，以响应于所识别的电压基线而写入到MLC存储器中的数据。

公开(公告)号：US20110154060A1

公开(公告)日：2011-06-23

申请号：US12640730

申请日：2009-12-17

申请人： Cyril Guyot ,  Zvonimir Z. Bandic ,  Yuval Cassuto ,  Adam Michael Espeseth ,  Marco Sanvido

发明人： Cyril Guyot ,  Zvonimir Z. Bandic ,  Yuval Cassuto ,  Adam Michael Espeseth ,  Marco Sanvido

IPC分类号： G06F12/14 ,  G06F21/24

CPC分类号： G06F12/1425 ,  G06F12/0246 ,  G06F21/79 ,  G06F2221/2131 ,  G06F2221/2143 ,  G11C16/16 ,  G11C16/22 ,  H04L9/0894

摘要： A method and apparatus are provided for implementing secure erase for solid state drives (SSDs). An encryption key is used to encrypt data being written to SSD. A controller identifies a key storage option, and responsive to the identified key storage option, stores a key for data encryption and decryption. The controller deletes the key within the SSD responsive to the identified key storage option, ensuring that once the key is deleted, the key is not recoverable and data is effectively erased.

摘要翻译： 提供了一种用于实现固态驱动器（SSD）的安全擦除的方法和装置。 加密密钥用于加密写入SSD的数据。 控制器识别密钥存储选项，并且响应于所识别的密钥存储选项，存储用于数据加密和解密的密钥。 控制器响应于识别的密钥存储选项删除SSD内的密钥，确保一旦密钥被删除，密钥不可恢复，数据被有效地擦除。

公开(公告)号：US07965465B2

公开(公告)日：2011-06-21

申请号：US12402415

申请日：2009-03-11

申请人： Marco Sanvido ,  Cyril Guyot ,  Anand Krishnamurthi Kulkarni ,  Zvonimir Bandic ,  Martin Chen

发明人： Marco Sanvido ,  Cyril Guyot ,  Anand Krishnamurthi Kulkarni ,  Zvonimir Bandic ,  Martin Chen

IPC分类号： G11B19/04 ,  G11B5/09

CPC分类号： G11B5/596 ,  G11B5/012 ,  G11B5/02 ,  G11B20/10527 ,  G11B2020/10759 ,  G11B2220/2516

摘要： A data storage apparatus includes a data storage medium, a write element, a non-volatile cache memory circuit, and a controller circuit. The controller circuit is configured to record data on the data storage medium in groups of overlapping tracks using the write element. The controller circuit is configured to store a shingle block of data from a subset of the overlapping tracks in the non-volatile cache memory circuit, while at least a portion of the data in the shingle block of data is updated.

摘要翻译： 数据存储装置包括数据存储介质，写元件，非易失性高速缓冲存储器电路和控制器电路。 控制器电路被配置为使用写入元件在数据存储介质上以重叠轨迹的组记录数据。 控制器电路被配置为在非易失性高速缓冲存储器电路中存储来自重叠轨道的子集的数据的瓦块，同时数据瓦块中的至少一部分数据被更新。

公开(公告)号：US20110026155A1

公开(公告)日：2011-02-03

申请号：US12905067

申请日：2010-10-14

申请人： Zvonimir Z. Bandic ,  Jorge Campello de Souza ,  Cyril Guyot ,  Bruce Alexander Wilson

发明人： Zvonimir Z. Bandic ,  Jorge Campello de Souza ,  Cyril Guyot ,  Bruce Alexander Wilson

IPC分类号： G11B5/09

CPC分类号： G11B5/09 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/82

摘要： Patterned-media magnetic recording disks are made from a master template that has nondata regions that contain a pattern of one or more discrete nondata islands and discrete gaps, with the pattern representing a scrambled number. All disks made from the master template, or from replica molds made from the master, will have the same patterns. When the disks are DC-magnetized so that all the nondata islands are magnetized in the same direction, these patterns will include one or more of discrete magnetized nondata islands and discrete nonmagnetic gaps that are scrambled in a pseudo-random manner. During operation of the disk drive the patterns are detected by the read head and interpreted within the disk drive using knowledge of the pseudo-random scrambling function, so that reading and writing of data can occur in the conventional manner. If the disks are copied in an attempt to replicate the master template, the resulting disks will be inoperable in a disk drive because of the scrambling.

摘要翻译： 图案化介质磁记录盘由主模板制成，该主模板具有包含一个或多个离散非数据岛和离散间隙的图案的非数据区域，其中图案表示加扰数字。 由主模板制成的所有磁盘或从主模块制作的副本模具将具有相同的模式。 当磁盘被直流磁化使得所有的非磁盘岛都以相同的方向被磁化时，这些模式将包括以伪随机方式加扰的离散磁化非磁盘岛和离散非磁性间隙中的一个或多个。 在磁盘驱动器的操作期间，通过读取头检测图案并使用伪随机加扰函数的知识在磁盘驱动器内进行解读，从而以常规方式发生数据的读取和写入。 如果复制磁盘以复制主模板，则由于加扰，生成的磁盘将无法在磁盘驱动器中运行。

公开(公告)号：US20090161246A1

公开(公告)日：2009-06-25

申请号：US11963837

申请日：2007-12-23

申请人： Zvonimir Bandic ,  Satoshi Yamamoto ,  Minoru Hashimoto ,  Cyril Guyot ,  Anand Krishnamurthi Kulkarni ,  Marco Sanvido ,  Jorge Campello de Souza

发明人： Zvonimir Bandic ,  Satoshi Yamamoto ,  Minoru Hashimoto ,  Cyril Guyot ,  Anand Krishnamurthi Kulkarni ,  Marco Sanvido ,  Jorge Campello de Souza

IPC分类号： G11B15/18

CPC分类号： G06F7/588

摘要： A hard disk drive enhances random number generation. In particular embodiments, the hard disk drive includes a controller, a hard disk, and a head. The head includes a read sensor for reading patterns on the hard disk. The controller generates a random number based on information associated with the position of the head relative to at least one track of the hard disk.

摘要翻译： 硬盘驱动器增强了随机数生成。 在具体实施例中，硬盘驱动器包括控制器，硬盘和磁头。 头部包括用于读取硬盘上的图案的读取传感器。 控制器基于与头部相对于硬盘的至少一个轨道的位置相关联的信息生成随机数。

公开(公告)号：US08874875B2

公开(公告)日：2014-10-28

申请号：US13537293

申请日：2012-06-29

申请人： Zvonimir Z. Bandic ,  Cyril Guyot

发明人： Zvonimir Z. Bandic ,  Cyril Guyot

IPC分类号： G06F12/10 ,  G06F12/02

CPC分类号： G06F12/0292 ,  G06F12/0253 ,  G06F12/08 ,  G06F12/0875 ,  G06F12/10 ,  G11B5/012

摘要： ICC-NCQ priority and deadline information in conjunction with an estimation of command access time that is specific to SMR drives are used improve command queue optimization. Estimated completion times are determined based on the internal subcommands that the drive has to execute to complete the host read or write command taking into account whether all or part of the data will be or already is stored in write-twice cache, E-region and/or I-region. The command processor selects the next command for execution based on calculated access times with adjusted priority based on the specified deadline for the command. As the deadline approaches, the priority of the command increases. For high priority data writes as specified by a host, an optimized storage plan is selected as appropriate using the “write-twice cache” (WTC) region, E-region or I-region.

摘要翻译： 使用ICC-NCQ优先级和截止日期信息以及特定于SMR驱动器的命令访问时间的估计来改进命令队列优化。 估计的完成时间是基于驱动器执行的内部子命令来确定的，以完成主机读或写命令，考虑到全部或部分数据是否已经存储在二次写入高速缓存，E区和 /或I区域。 命令处理器根据计划的访问次数，根据指定的最终期限，选择下一个执行命令，并以调整的优先级。 随着截止日期的到来，命令的优先级增加。 对于由主机指定的高优先级数据写入，使用“两倍写入高速缓存”（WTC）区域，E区域或I区域，适当地选择优化的存储方案。