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公开(公告)号：US08296623B2
公开(公告)日：2012-10-23
申请号：US11969846
申请日：2008-01-04
Applicant: Yuval Cassuto , Jehoshua Bruck , Moshe Schwartz , Vasken Bohossian
Inventor： Yuval Cassuto , Jehoshua Bruck , Moshe Schwartz , Vasken Bohossian
CPC classification number: H03M13/49 , G06F11/1068 , G06F11/1072
Abstract: Error correction is tailored for the use of an ECC for correcting asymmetric errors with low magnitude in a data device, with minimal modifications to the conventional data device architecture. The technique permits error correction and data recovery to be performed with reduced-size error correcting code alphabets. For particular cases, the technique can reduce the problem of constructing codes for correcting limited magnitude asymmetric errors to the problem of constructing codes for symmetric errors over small alphabets. Also described are speed up techniques for reaching target data levels more quickly, using more aggressive memory programming operations.
Abstract translation: 纠错是为了使用ECC来修正数据设备中具有低幅度的非对称误差，而对常规数据设备架构的修改最少。 该技术允许使用缩小尺寸的纠错码字母进行纠错和数据恢复。 对于特定情况，该技术可以减少构造用于校正有限幅度非对称误差的代码的问题，以构建小字母对称误差代码的问题。 还描述了使用更积极的存储器编程操作来更快地达到目标数据级别的加速技术。
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公开(公告)号：US20110149433A1
公开(公告)日：2011-06-23
申请号：US12653863
申请日：2009-12-18
Applicant: Jonathan Darrel Coker , David Timothy Flynn , Yuval Cassuto
Inventor： Jonathan Darrel Coker , David Timothy Flynn , Yuval Cassuto
IPC: G11B5/596
CPC classification number: G11B5/59655 , G11B5/59688 , G11B20/1217 , G11B2020/1281 , G11B2020/1284 , G11B2220/2516
Abstract: An embodiment of the present invention implements some or all major servo subfunctions for a storage device in integrated servo fields comprising sequences of encoded bits having selected mathematical properties. The integrated servo field is composed of a number of encoded sequences, which are members of a selected sequence set that is constrained to preferably provide some or all of the following functions: the Servo Track Mark (STM), the Position Error Signal (PES) and positional information such as the track-ID. In one embodiment the plurality sequences encoding a location identifier such as a track-ID are distributed across a set of servo wedges. A method of encoding the location identifier using a Chinese Remainder Theorem is described.
Abstract translation: 本发明的实施例在包括具有所选数学特性的编码比特序列的集成伺服字段中实现存储设备的一些或所有主要伺服子功能。 集成伺服字段由多个编码序列组成，编码序列是被选择的序列集合的成员，其被限制为优选地提供以下功能中的一些或全部：伺服轨迹标记（STM），位置误差信号（PES） 以及诸如轨道ID的位置信息。 在一个实施例中，编码诸如轨道ID的位置标识符的多个序列分布在一组伺服楔块上。 描述了使用中国剩余定理对位置标识符进行编码的方法。
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公开(公告)号：US20080168320A1
公开(公告)日：2008-07-10
申请号：US11969846
申请日：2008-01-04
Applicant: Yuval Cassuto , Jehoshua Bruck , Moshe Schwartz , Vasken Bohossian
Inventor： Yuval Cassuto , Jehoshua Bruck , Moshe Schwartz , Vasken Bohossian
IPC: G06F11/00
CPC classification number: H03M13/49 , G06F11/1068 , G06F11/1072
Abstract: Error correction is tailored for the use of an ECC for correcting asymmetric errors with low magnitude in a data device, with minimal modifications to the conventional data device architecture. The technique permits error correction and data recovery to be performed with reduced-size error correcting code alphabets. For particular cases, the technique can reduce the problem of constructing codes for correcting limited magnitude asymmetric errors to the problem of constructing codes for symmetric errors over small alphabets. Also described are speed up techniques for reaching target data levels more quickly, using more aggressive memory programming operations.
Abstract translation: 纠错是为了使用ECC来修正数据设备中具有低幅度的非对称误差，而对常规数据设备架构的修改最少。 该技术允许使用缩小尺寸的纠错码字母进行纠错和数据恢复。 对于特定情况，该技术可以减少构造用于校正有限幅度非对称误差的代码的问题，以构建小字母对称误差代码的问题。 还描述了使用更积极的存储器编程操作来更快地达到目标数据级别的加速技术。
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公开(公告)号：US08879319B1
公开(公告)日：2014-11-04
申请号：US13562136
申请日：2012-07-30
Applicant: Yuval Cassuto , Luoming Zhang , M. Amin Shokrollahi
Inventor： Yuval Cassuto , Luoming Zhang , M. Amin Shokrollahi
CPC classification number: G11C16/10 , G11C11/5628 , G11C11/5642 , G11C16/105 , G11C17/146 , G11C2211/5641 , G11C2211/5646
Abstract: A multi-level cell flash memory storage device has cells wherein different charge levels represent different information. The storage device can read stored charge from one or more cells, store a rewrite generation value for a group of a plurality of cells in a block of cells, and write to cells, wherein writing to one or more cells without an erase includes an increment of the rewrite generation value, and includes circuitry for reading from cells, including circuitry for reading the rewrite generation value. The storage device can include circuitry for reading from cells includes within the multi-level cell flash memory storage device logic for calculating a stored value of the cells using the rewrite generation value and relative levels of charge on a plurality of cells. The storage device can track hot addresses and cold addresses and perform static or dynamic wear leveling based on accumulated rewrite generation values.
Abstract translation: 多级单元闪存存储设备具有其中不同电荷电平表示不同信息的单元。 存储设备可以从一个或多个单元读取存储的电荷，将一组多个单元的重写生成值存储在单元块中，并写入单元，其中写入一个或多个单元而不擦除包括增量 并且包括用于从单元读取的电路，包括用于读取重写生成值的电路。 存储设备可以包括用于从小区读取的电路包括在多级单元闪存存储设备逻辑中，用于使用重写生成值和多个单元上的电荷的相对电平来计算单元的存储值。 存储设备可以跟踪热地址和冷地址，并基于累积的重写生成值执行静态或动态损耗均衡。
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公开(公告)号：US20130142024A1
公开(公告)日：2013-06-06
申请号：US13312979
申请日：2011-12-06
Applicant: Marco Sanvido , Zvonimir Bandic , Yuval Cassuto , Jorge Campello De Souza , Cyril Guyot , Tomohiro Harayama
Inventor： Marco Sanvido , Zvonimir Bandic , Yuval Cassuto , Jorge Campello De Souza , Cyril Guyot , Tomohiro Harayama
IPC: G11B27/36
CPC classification number: G11B27/36 , G11B2220/2516
Abstract: 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).
Abstract translation: 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。
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Patent Agency Ranking
公开(公告)号：US20120303866A1
公开(公告)日：2012-11-29
申请号：US13200632
申请日：2011-09-27
Applicant: Zvonimir Z. Bandic , Yuval Cassuto , Jonathan Darrel Coker , Cyril Guyot , Marco Sanvido
Inventor： Zvonimir Z. Bandic , Yuval Cassuto , Jonathan Darrel Coker , Cyril Guyot , Marco Sanvido
IPC: G06F12/16
CPC classification number: G11B5/012
Abstract: Methods are described that allow disk drives, such as shingle-written magnetic recording (SMR) drives, to recover an Indirection Address Table mapping of LBAs to PBAs after an emergency power off (EPO). Indirection Address Table (IAT) snapshots are periodically written inline with user data stores, and in one embodiment Cumulative Delta Lists (CDLs) with incremental address update information are stored between snapshots. In an embodiment of the invention, when an imminent loss of power is detected, the current CDL, covering IAT updates not yet written to disk, is saved to a nonvolatile memory. The IAT snapshots combined with the set of CDLs provide the information needed to recreate the current Indirection Address Table when power is restored after an emergency power loss. In an alternative embodiment the CDL is obviated by including metadata in the sector that encodes the address indirection mapping and the last snapshot ID.
Abstract translation: 描述了允许诸如瓦楞纸磁记录（SMR）驱动器的磁盘驱动器在紧急断电（EPO）之后恢复LBA到PBA的间接地址表映射的方法。 间接地址表（IAT）快照与用户数据存储器一起定期写入，并且在一个实施例中，具有增量地址更新信息的累积三角洲列表（CDL）被存储在快照之间。 在本发明的一个实施例中，当检测到即将发生的功率损失时，覆盖IAT更新尚未写入盘的当前CDL被保存到非易失性存储器。 IAT快照与CDL集合组合提供了在紧急停电后恢复供电时重新创建当前间接地址表所需的信息。 在替代实施例中，通过在编码地址间接映射的扇区和最后的快照ID中包括元数据来消除CDL。
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公开(公告)号：US08250380B2
公开(公告)日：2012-08-21
申请号：US12640730
申请日：2009-12-17
Applicant: Cyril Guyot , Zvonimir Z. Bandic , Yuval Cassuto , Adam Michael Espeseth , Marco Sanvido
Inventor： Cyril Guyot , Zvonimir Z. Bandic , Yuval Cassuto , Adam Michael Espeseth , Marco Sanvido
CPC classification number: G06F12/1425 , G06F12/0246 , G06F21/79 , G06F2221/2131 , G06F2221/2143 , G11C16/16 , G11C16/22 , H04L9/0894
Abstract: 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.
Abstract translation: 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，并且数据被有效地擦除。
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公开(公告)号：US08599507B2
公开(公告)日：2013-12-03
申请号：US13312979
申请日：2011-12-06
Applicant: Marco Sanvido , Zvonimir Bandic , Yuval Cassuto , Jorge Campello De Souza , Cyril Guyot , Tomohiro Harayama
Inventor： Marco Sanvido , Zvonimir Bandic , Yuval Cassuto , Jorge Campello De Souza , Cyril Guyot , Tomohiro Harayama
CPC classification number: G11B27/36 , G11B2220/2516
Abstract: 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).
Abstract translation: 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。
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公开(公告)号：US20110154060A1
公开(公告)日：2011-06-23
申请号：US12640730
申请日：2009-12-17
Applicant: Cyril Guyot , Zvonimir Z. Bandic , Yuval Cassuto , Adam Michael Espeseth , Marco Sanvido
Inventor： Cyril Guyot , Zvonimir Z. Bandic , Yuval Cassuto , Adam Michael Espeseth , Marco Sanvido
CPC classification number: G06F12/1425 , G06F12/0246 , G06F21/79 , G06F2221/2131 , G06F2221/2143 , G11C16/16 , G11C16/22 , H04L9/0894
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US08892817B2
公开(公告)日：2014-11-18
申请号：US13200632
申请日：2011-09-27
Applicant: Zvonimir Z. Bandic , Yuval Cassuto , Jonathan Darrel Coker , Cyril Guyot , Marco Sanvido
Inventor： Zvonimir Z. Bandic , Yuval Cassuto , Jonathan Darrel Coker , Cyril Guyot , Marco Sanvido
CPC classification number: G11B5/012
Abstract: Methods are described that allow disk drives, such as shingle-written magnetic recording (SMR) drives, to recover an Indirection Address Table mapping of LBAs to PBAs after an emergency power off (EPO). Indirection Address Table (IAT) snapshots are periodically written inline with user data stores, and in one embodiment Cumulative Delta Lists (CDLs) with incremental address update information are stored between snapshots. In an embodiment of the invention, when an imminent loss of power is detected, the current CDL, covering IAT updates not yet written to disk, is saved to a nonvolatile memory. The IAT snapshots combined with the set of CDLs provide the information needed to recreate the current Indirection Address Table when power is restored after an emergency power loss. In an alternative embodiment the CDL is obviated by including metadata in the sector that encodes the address indirection mapping and the last snapshot ID.
Abstract translation: 描述了允许诸如瓦楞纸磁记录（SMR）驱动器的磁盘驱动器在紧急断电（EPO）之后恢复LBA到PBA的间接地址表映射的方法。 间接地址表（IAT）快照与用户数据存储器一起定期写入，并且在一个实施例中，具有增量地址更新信息的累积三角洲列表（CDL）被存储在快照之间。 在本发明的一个实施例中，当检测到即将发生的功率损失时，覆盖IAT更新尚未写入盘的当前CDL被保存到非易失性存储器。 IAT快照与CDL集合组合提供了在紧急停电后恢复供电时重新创建当前间接地址表所需的信息。 在替代实施例中，通过在编码地址间接映射的扇区和最后的快照ID中包括元数据来消除CDL。
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