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1.发明授权公开(公告)号：US08315394B2
公开(公告)日：2012-11-20
申请号：US11923123
申请日：2007-10-24
申请人： Marco Sanvido , Anand Krishnamurthi Kulkarni , Cyril Guyot , Richard M. H. New , Jorge Campello de Souza
发明人： Marco Sanvido , Anand Krishnamurthi Kulkarni , Cyril Guyot , Richard M. H. New , Jorge Campello de Souza
IPC分类号： G06F21/00
CPC分类号： H04L9/0822 , H04L9/0863
摘要： A data storage device encrypts data stored in non-volatile memory using a bulk encryption key. The data storage device uses a key derivation function to generate an initial encryption key. The data storage device then wraps an intermediate encryption key with the initial encryption key and stores the wrapped intermediate key in the non-volatile memory. The data storage device wraps the bulk encryption key with the intermediate encryption key and stores the wrapped bulk encryption key in the non-volatile memory. The data storage device can unwrap the wrapped intermediate key to generate the intermediate encryption key using the initial encryption key. The data storage device can unwrap the wrapped bulk encryption key to generate the bulk encryption key using the intermediate encryption key. The data storage device decrypts data stored in the non-volatile memory using the bulk encryption key.
摘要翻译： 数据存储设备使用批量加密密钥对存储在非易失性存储器中的数据进行加密。 数据存储装置使用密钥导出函数来生成初始加密密钥。 然后，数据存储设备将具有初始加密密钥的中间加密密钥包裹起来，并将包裹的中间密钥存储在非易失性存储器中。 数据存储设备将批量加密密钥与中间加密密钥打包，并将包装的批量加密密钥存储在非易失性存储器中。 数据存储设备可以使用初始加密密钥解包包裹的中间密钥以产生中间加密密钥。 数据存储设备可以使用中间加密密钥解开包装的批量加密密钥以生成批量加密密钥。 数据存储装置使用批量加密密钥对存储在非易失性存储器中的数据进行解密。
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公开(公告)号：US07971241B2
公开(公告)日：2011-06-28
申请号：US11615843
申请日：2006-12-22
IPC分类号： G06F7/04
CPC分类号： G06F21/80
摘要： A verifiable security mode is provided for securing data on a storage device, such as a hard disk drive. When the verifiable security mode is enabled, only authenticated accesses to data stored on the storage device are permitted after entering a password. An end user is prevented from disabling the verifiable security mode. The verifiable security mode can be set to allow or disallow an administrator from disabling the verifiable security mode. The verifiable security mode can be implemented, for example, in firmware on a hard disk drive (HDD).
摘要翻译： 提供了可验证的安全模式，用于将数据保护在诸如硬盘驱动器的存储设备上。 当启用可验证的安全模式时，只有在输入密码后才允许对存储设备上存储的数据进行身份验证访问。 防止最终用户禁用可验证的安全模式。 可验证的安全模式可以设置为允许或禁止管理员禁用可验证的安全模式。 可验证的安全模式可以例如在硬盘驱动器（HDD）上的固件中实现。
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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。
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4.发明申请Techniques For Encrypting Data On Storage Devices Using An Intermediate Key 有权使用中间密钥对存储设备上的数据进行加密的技术公开(公告)号：US20090110191A1
公开(公告)日：2009-04-30
申请号：US11923123
申请日：2007-10-24
申请人： Marco Sanvido , Anand Krishnamurthi Kulkarni , Cyril Guyot , Richard M.H. New , Jorge Campello de Souza
发明人： Marco Sanvido , Anand Krishnamurthi Kulkarni , Cyril Guyot , Richard M.H. New , Jorge Campello de Souza
IPC分类号： H04L9/08
CPC分类号： H04L9/0822 , H04L9/0863
摘要： A data storage device encrypts data stored in non-volatile memory using a bulk encryption key. The data storage device uses a key derivation function to generate an initial encryption key. The data storage device then wraps an intermediate encryption key with the initial encryption key and stores the wrapped intermediate key in the non-volatile memory. The data storage device wraps the bulk encryption key with the intermediate encryption key and stores the wrapped bulk encryption key in the non-volatile memory. The data storage device can unwrap the wrapped intermediate key to generate the intermediate encryption key using the initial encryption key. The data storage device can unwrap the wrapped bulk encryption key to generate the bulk encryption key using the intermediate encryption key. The data storage device decrypts data stored in the non-volatile memory using the bulk encryption key.
摘要翻译： 数据存储设备使用批量加密密钥对存储在非易失性存储器中的数据进行加密。 数据存储装置使用密钥导出函数来生成初始加密密钥。 然后，数据存储设备将具有初始加密密钥的中间加密密钥包裹起来，并将包裹的中间密钥存储在非易失性存储器中。 数据存储设备将批量加密密钥与中间加密密钥打包，并将包装的批量加密密钥存储在非易失性存储器中。 数据存储设备可以使用初始加密密钥解包包裹的中间密钥以产生中间加密密钥。 数据存储设备可以使用中间加密密钥解开包装的批量加密密钥以生成批量加密密钥。 数据存储装置使用批量加密密钥对存储在非易失性存储器中的数据进行解密。
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公开(公告)号：US07880990B2
公开(公告)日：2011-02-01
申请号：US12332287
申请日：2008-12-10
IPC分类号： G11B5/09
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.
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6.发明申请公开(公告)号：US20100142076A1
公开(公告)日：2010-06-10
申请号：US12332287
申请日：2008-12-10
IPC分类号： G11B5/09
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。
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7.发明申请公开(公告)号：US20110026155A1
公开(公告)日：2011-02-03
申请号：US12905067
申请日：2010-10-14
IPC分类号： G11B5/09
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。
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公开(公告)号：US08683469B2
公开(公告)日：2014-03-25
申请号：US11848174
申请日：2007-08-30
IPC分类号： G06F9/46
CPC分类号： G06F11/1435 , Y10S707/99953
摘要： A system for enhancing command scheduling is provided. In particular embodiments, the system includes a processor and a scheduler that receives commands from the processor for accessing a storage device. The scheduler receives a set of commands, some of which have a deadline, and the scheduler is configured to determine an execution order for those commands. The scheduler is also configured to defer the execution of one or more of those commands to a later time.
摘要翻译： 提供了一种用于增强命令调度的系统。 在特定实施例中，系统包括处理器和调度器，其从处理器接收命令以访问存储设备。 调度器接收一组命令，其中一些命令有一个最后期限，并且调度器被配置为确定这些命令的执行顺序。 调度器还被配置为将这些命令中的一个或多个的执行推迟到稍后时间。
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公开(公告)号：US07113555B2
公开(公告)日：2006-09-26
申请号：US10272372
申请日：2002-10-15
CPC分类号： G11B20/18
摘要： A data channel includes a data detector that approximates both inter-symbol-interference (ISI) and random timing perturbations using a single finite-state hidden Markov model. The ISI is approximated by a finite impulse response and the timing perturbations are approximated by a first order random walk. The data signal, which is subject to inter-symbol interference and timing perturbations, is sampled periodically over a succession of time epochs without regard to timing perturbations. Timing perturbation values and data states are then assigned for each epoch, and each timing perturbation value is paired with each data state to arrive at a set of composite states. Probabilities are then assigned between composite states in successive epochs to arrive at the most probable composite state sequence corresponding to the sequence of detected data values from the sampled data. A Viterbi algorithm is then applied to find the maximum likelihood sequence of composite states. The resulting composite state sequence then defines both the data sequence and timing trajectory which, jointly, are most likely given the observations.
摘要翻译： 数据通道包括使用单个有限状态隐马尔科夫模型近似符号间干扰（ISI）和随机定时扰动两者的数据检测器。 ISI由有限脉冲响应近似，并且定时扰动由第一阶随机游走近似。 经历了符号间干扰和定时扰动的数据信号在一系列时间周期内被周期性地采样，而不考虑定时扰动。 然后为每个时期分配定时扰动值和数据状态，并且每个定时扰动值与每个数据状态配对以得到一组复合状态。 然后在连续历元中的复合状态之间分配概率，以便从采样数据中得到对应于检测到的数据值序列的最可能的复合状态序列。 然后应用维特比算法来找到复合状态的最大似然序列。 所得到的复合状态序列随后定义了数据序列和定时轨迹，它们最有可能给出观测结果。
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公开(公告)号：US07640412B2
公开(公告)日：2009-12-29
申请号：US11750593
申请日：2007-05-18
IPC分类号： G06F12/16
CPC分类号： G06F11/1435 , Y10S707/99953
摘要： A system for enhancing the reliability of file systems is provided. In particular embodiments, the system includes a data storage device that includes one or more journal blocks, one or more primary metadata blocks, and one or more mirror metadata blocks. The system also includes a file system that writes metadata to the one or more journal blocks before writing the metadata to both the one or more primary metadata blocks and to the one or more mirror metadata blocks.
摘要翻译： 提供了一种用于增强文件系统的可靠性的系统。 在特定实施例中，系统包括包括一个或多个日志块，一个或多个主要元数据块以及一个或多个镜像元数据块的数据存储设备。 该系统还包括在将元数据写入一个或多个主要元数据块和一个或多个镜像元数据块之前将元数据写入一个或多个日志块的文件系统。
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