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公开(公告)号：US5999110A
公开(公告)日：1999-12-07
申请号：US24422
申请日：1998-02-17
CPC分类号： G11B20/1403 , G11B2020/1476 , G11B2220/90
摘要： Disclosed is an error tolerant binary encoded synchronization mark concatenated with a known pattern, such as a VFO pattern, comprising an encoded pattern of a fixed plurality of bits, the encoded synchronization pattern being at maximum Hamming distance from the concatenated known pattern for the number of bits in the fixed plurality of bits. The error tolerant synchronization mark may also be concatenated with the VFO pattern seen in reverse, and the synchronization pattern additionally is at maximum Hamming distance from the concatenated known VFO pattern seen in reverse.
摘要翻译： 公开了一种容错二进制编码同步标记，其与已知模式连接，诸如VFO模式，包括固定多个位的编码模式，编码同步模式距离级联已知模式的最大汉明距离为 固定多个比特中的比特。 误差同步标记也可以与反向看到的VFO模式相连，并且同步模式另外与从反向看到的级联的已知VFO模式相距最大的汉明距离。
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公开(公告)号：US07116736B2
公开(公告)日：2006-10-03
申请号：US10038163
申请日：2002-01-02
CPC分类号： G11B20/1426 , G11B27/3027 , G11B2020/1446
摘要： Provided is a method, system, and program for providing synchronization in a binary data stream. A binary data stream is received. A synchronization mark having at least one isolated peak is generated into at least one point in the data stream. An encoded data stream is formed by concatenating the synchronization mark with the received binary data. During decoding, the synchronization mark is detected based on error propagation occurring adjacent to the at least one isolated peak of the synchronization mark.
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公开(公告)号：US06985320B2
公开(公告)日：2006-01-10
申请号：US10037753
申请日：2002-01-02
IPC分类号： G11B5/09
CPC分类号： G11B20/10009 , G11B5/00813 , G11B5/09 , G11B20/1426 , G11B2020/1434 , G11B2020/1446
摘要： Provided is a method, system, and program for storing input groups of uncoded binary data on a storage medium. A plurality of uncoded data blocks in a data stream are received. An encoded data stream is obtained from concatenating successive encoded blocks such that the encoded data stream includes a predetermined bit pattern comprising a plurality of bits. The bit pattern always occurs within a first number of bits and two occurrences of a “1” or “0” occur within a second number of bits. The encoded data blocks are stored on the storage medium.
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4.发明授权Adjusting a read detection equalizer filter of a magnetic tape drive employing a recording format required control pattern 有权调整采用记录格式所需控制模式的磁带驱动器的读取检测均衡器滤波器公开(公告)号：US06765741B2
公开(公告)日：2004-07-20
申请号：US10302885
申请日：2002-11-25
IPC分类号： G11B5035
CPC分类号： G11B5/035
摘要： Adjustment of a read detection equalizer filter of a magnetic tape drive is conducted utilizing a required control pattern signal which comprises a required portion of a normal recording format of the magnetic tape. An example comprises a data set separator signal. The sensed required control pattern signal is processed with respect to a target reference pattern signal to adapt the read detection equalizer filter to the target reference pattern signal.
摘要翻译： 使用包括磁带的正常记录格式的所需部分的所需控制模式信号来进行磁带驱动器的读检测均衡器滤波器的调整。 示例包括数据集分离器信号。 感测到的所需控制模式信号相对于目标参考模式信号被处理，以使读取的检测均衡器滤波器适应于目标参考模式信号。
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5.发明授权公开(公告)号：US08375064B2
公开(公告)日：2013-02-12
申请号：US11381905
申请日：2006-05-05
IPC分类号： G06F17/30
CPC分类号： H03M13/096 , G06F11/1004
摘要： An apparatus, system, and method are disclosed for read back verification of stored data. A file CRC module calculates a first file CRC for a data file. A segmentation module segments the data file into a plurality of data blocks that comprise a copy of the data file. A block CRC module calculates a data block CRC for each data block. An aggregated CRC module calculates a second file CRC from the data block CRCs. In addition, the aggregated CRC module verifies copy of the data file if the second file CRC is substantially equivalent to the first file CRC.
摘要翻译： 公开了一种用于读回存储数据的验证的装置，系统和方法。 文件CRC模块计算数据文件的第一个文件CRC。 分割模块将数据文件分割成包括数据文件的副本的多个数据块。 块CRC模块计算每个数据块的数据块CRC。 聚合CRC模块从数据块CRC计算第二个文件CRC。 此外，如果第二文件CRC基本上等于第一文件CRC，则聚合CRC模块验证数据文件的副本。
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公开(公告)号：US08300831B2
公开(公告)日：2012-10-30
申请号：US12767723
申请日：2010-04-26
申请人： David Ray Kahler , Anjul Mathur , Richard Anthony Ripberger , Jacob Lee Sheppard , Glen Alan Jaquette
发明人： David Ray Kahler , Anjul Mathur , Richard Anthony Ripberger , Jacob Lee Sheppard , Glen Alan Jaquette
IPC分类号： H04L9/00
CPC分类号： H04L9/083 , H04L9/0825
摘要： Provided are a computer program product, system and method for a redundant key server encryption environment. A key server transmits public keys associated with the key server and at least one device to at least one remote key server. The key server receives from the at least one remote key server public keys associated with the at least one remote key server. The key server receives a request for an encryption key from a requesting device comprising one of the at least one device and generates the encryption key for use by the requesting device to unlock a storage. The key server generates a first wrapped encryption key by encrypting the encryption key with a requesting device public key associated with the requesting device. The key server generates a second wrapped encryption key by encrypting the encryption key with a public key associated with the key server. At least one additional wrapped encryption key is generated for each of the at least one remote key server by encrypting the encryption key with the at least one public key provided by the at least one remote key server. The key server transmits the first, second and the at least one additional wrapped encryption key to the requesting device.
摘要翻译： 提供了一种用于冗余密钥服务器加密环境的计算机程序产品，系统和方法。 密钥服务器将与密钥服务器和至少一个设备相关联的公钥传送到至少一个远程密钥服务器。 密钥服务器从与至少一个远程密钥服务器相关联的至少一个远程密钥服务器公钥接收。 密钥服务器从包括至少一个设备之一的请求设备接收到对加密密钥的请求，并且生成加密密钥以供请求设备使用以解锁存储。 密钥服务器通过使用与请求设备相关联的请求设备公钥对加密密钥进行加密来生成第一封包加密密钥。 密钥服务器通过使用与密钥服务器相关联的公钥加密加密密钥来生成第二封包加密密钥。 通过利用由至少一个远程密钥服务器提供的至少一个公共密钥对加密密钥进行加密，为至少一个远程密钥服务器中的每一个生成至少一个附加的包装加密密钥。 密钥服务器将第一，第二和至少一个附加的包装加密密钥发送到请求设备。
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7.发明授权公开(公告)号：US07965844B2
公开(公告)日：2011-06-21
申请号：US11688445
申请日：2007-03-20
CPC分类号： G11B20/00086
摘要： A method, system and program are disclosed for efficiently processing host data which comprises encrypted and non-encrypted data and is to be written to a storage medium. The encrypted data is written to the storage medium in encrypted form. The non-encrypted data is encrypted by a storage device using a well known encryption key and written to the storage medium. In this way, the data that is processed by the storage device to and from the storage medium can always be processed through a single encryption engine.
摘要翻译： 公开了一种方法，系统和程序，用于有效地处理包括加密和非加密数据的主机数据，并将其写入存储介质。 加密数据以加密形式写入存储介质。 未经加密的数据由存储装置使用公知的加密密钥进行加密并写入存储介质。 以这种方式，存储设备处理和从存储介质处理的数据可以总是通过单个加密引擎来处理。
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公开(公告)号：US07953978B2
公开(公告)日：2011-05-31
申请号：US11530006
申请日：2006-09-07
CPC分类号： H04L9/083 , H04L63/062 , H04L2209/76
摘要： Provided are techniques for key generation and retrieval. Unique identifiers of two or more key servers are stored, wherein each key server is capable of generating keys for encryption of data and of returning keys for decryption of data. A key request is received. A technique for selecting one of the key servers to which the key request is to be forwarded is identified. One of the key servers is selected using the identified technique. The key request is sent to the identified key server.
摘要翻译： 提供了用于密钥生成和检索的技术。 存储两个或更多个密钥服务器的唯一标识符，其中每个密钥服务器能够生成用于加密数据的密钥和用于数据解密的返回密钥。 收到一个关键请求。 识别用于选择要转发密钥请求的密钥服务器之一的技术。 使用识别的技术选择其中一个关键服务器。 密钥请求被发送到识别的密钥服务器。
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公开(公告)号：US07650461B2
公开(公告)日：2010-01-19
申请号：US12206089
申请日：2008-09-08
IPC分类号： G06F12/00
CPC分类号： G11B23/288 , G11B15/07 , G11B23/042 , G11B23/107
摘要： A magnetic tape cartridge, a recording system, and a magnetic tape drive are configured to, for example, guard against tampering with a write once overwrite protection pointer which allows a rewritable magnetic tape to be treated as write once. In one embodiment, the magnetic tape cartridge comprises a magnetic tape and a cartridge memory. The magnetic tape is configured to provide at least one overwrite protection pointer, the overwrite protection pointer identifying data to be protected from being overwritten; and the cartridge memory is configured to provide the at least one overwrite protection pointer, the overwrite protection pointer identifying magnetic tape data to be protected from being overwritten.
摘要翻译： 磁带盒，记录系统和磁带驱动器被配置为例如防止篡改写入一次重写保护指针，其允许可重写磁带被处理为一次写入。 在一个实施例中，磁带盒包括磁带和盒式存储器。 磁带被配置为提供至少一个覆盖保护指针，覆盖保护指针识别要被保护的数据不被覆盖; 并且盒存储器被配置为提供至少一个覆盖保护指针，所述覆盖保护指针标识要被保护的磁带数据不被重写。
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公开(公告)号：US20090327625A1
公开(公告)日：2009-12-31
申请号：US12165540
申请日：2008-06-30
CPC分类号： G06F3/0641 , G06F3/0608 , G06F3/0689 , G06F12/0261 , G06F17/3015
摘要： Provided are a method, system, and article of manufacture for managing metadata for data blocks used in a deduplication system. File metadata is maintained for files having data blocks in a computer readable device. Data block metadata is maintained for each data block in the computer readable device. The data block metadata for one data block includes a data block reference and content identifier identifying content of the data block. The file metadata for each file includes the data block reference to each data block in the file. A determination is made of an unreferenced data block in the computer readable device that has become unreferenced. Indication is made that the data block metadata for the determined unreferenced data block as unreferenced metadata. The data block reference of the unreferenced metadata is maintained in the computer readable device in response to determining that a includes the data block indicated in the unreferenced metadata.
摘要翻译： 提供了一种用于管理在重复数据删除系统中使用的数据块的元数据的方法，系统和制品。 对于具有计算机可读设备中的数据块的文件，维护文件元数据。 为计算机可读设备中的每个数据块维护数据块元数据。 一个数据块的数据块元数据包括数据块参考和识别数据块内容的内容标识符。 每个文件的文件元数据包括对文件中每个数据块的数据块引用。 确定未被参考的计算机可读设备中的未引用的数据块。 指示将所确定的未引用的数据块的数据块元数据作为未引用的元数据。 响应于确定包括未引用的元数据中指示的数据块，将未引用的元数据的数据块引用保持在计算机可读设备中。
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