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1. 发明授权

US08331055B2 Control method and apparatus for a dual-channel weighted LPOS combining scheme 有权
标题翻译：双通道加权LPOS组合方案的控制方法和装置
公开(公告)号：US08331055B2
公开(公告)日：2012-12-11
申请号：US12500490
申请日：2009-07-09
申请人： Giovanni Cherubini , Robert Allen Hutchins , Jens Jelitto , Melanie Jean Sandberg
发明人： Giovanni Cherubini , Robert Allen Hutchins , Jens Jelitto , Melanie Jean Sandberg
IPC分类号： G11B21/02
CPC分类号： G11B5/584 , G11B5/29
摘要： A method for monitoring a plurality of servo channels, providing a finite state machine (“FSM”) comprising a single servo channel mode and a combined servo channel mode, and moving a sequential information storage medium comprising a plurality of servo bands across a read/write head comprising a corresponding plurality of servo sensors. The method further asserts an acquisition flag by a servo channel if that servo channel is tracking a servo pattern, and asserts a bit flag by a servo channel if a new LPOS bit is decoded. If at least one acquisition flag is asserted, the method determines if a bit flag is asserted by a servo channel associated with said asserted acquisition flag, and if an acquisition flag and a bit flag are asserted by a servo channel, the method determines a relative positioning of each servo sensor with respect to an associated servo pattern.
摘要翻译：一种用于监视多个伺服信道的方法，提供包括单个伺服信道模式和组合伺服信道模式的有限状态机（FSM），以及跨越读/写头移动包括多个伺服带的顺序信息存储介质包括相应的多个伺服传感器。如果伺服信道正在跟踪伺服模式，则该方法还通过伺服信道断言采集标志，如果解码了新的LPOS位，则通过伺服信道断言位标志。如果至少一个采集标志被断言，则该方法确定与所述断言获取标志相关联的伺服信道是否标志位标志，并且如果通过伺服信道确定获取标志和位标志，则该方法确定相对每个伺服传感器相对于相关伺服模式的定位。

2. 发明授权

US07605992B2 Robust LPOS detection with predictor and bit verifier 失效
标题翻译：具有预测器和位验证器的鲁棒LPOS检测
公开(公告)号：US07605992B2
公开(公告)日：2009-10-20
申请号：US12020961
申请日：2008-01-28
申请人： Nhan Xuan Bui , Robert Allen Hutchins , Melanie Jean Sandberg , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , Robert Allen Hutchins , Melanie Jean Sandberg , Kazuhiro Tsuruta
IPC分类号： G11B5/09
CPC分类号： G11B5/584 , G11B5/00813
摘要： A tape drive system which includes the ability to reliably reproduce LPOS information even if both of the servo channels of the tape drive system could not detect the LPOS information due to defects. The system recognizes that an LPOS sequence is sequentially incremented by one if a tape is moving in a forward direction and decremented by one if the tape is moving in a backward direction. This sequential property of the LPOS information lends itself to LPOS prediction, where the LPOS prediction is the previous LPOS value plus one if the tape is moving forward and the previous LPOS value minus one if the tape is moving backward. Even if the LPOS words from the two servo channels are both bad, but not all of the bits in the LPOS word are bad. The system uses the remaining good bits from the two servo channels to verify all of the bits of the LPOS prediction word.
摘要翻译：即使磁带驱动系统的两个伺服通道都由于缺陷而无法检测到LPOS信息，也能够可靠地再现LPOS信息的磁带驱动系统。如果磁带正向移动，则系统识别LPOS序列依次增加1，如果磁带沿向后方向移动，则LPOS序列递减1。 LPOS信息的这种顺序属性适用于LPOS预测，其中LPOS预测是先前的LPOS值，如果磁带正向前移动，则前一LPOS值减去1，如果磁带向后移动，则前一LPOS值减1。即使来自两个伺服通道的LPOS字都是坏的，但LPOS字中的所有位都不好。该系统使用来自两个伺服通道的剩余良好位来验证LPOS预测字的所有位。

3. 发明申请

US20090190250A1 Robust LPOS Detection With Predictor and Bit Verifier 失效
标题翻译：使用预测器和位验证器进行强大的LPOS检测
公开(公告)号：US20090190250A1
公开(公告)日：2009-07-30
申请号：US12020961
申请日：2008-01-28
申请人： Nhan Xuan Bui , Robert Allen Hutchins , Melanie Jean Sandberg , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , Robert Allen Hutchins , Melanie Jean Sandberg , Kazuhiro Tsuruta
IPC分类号： G11B5/584
CPC分类号： G11B5/584 , G11B5/00813
摘要： A tape drive system which includes the ability to reliably reproduce LPOS information even if both of the servo channels of the tape drive system could not detect the LPOS information due to defects. The system recognizes that an LPOS sequence is sequentially incremented by one if a tape is moving in a forward direction and decremented by one if the tape is moving in a backward direction. This sequential property of the LPOS information lends itself to LPOS prediction, where the LPOS prediction is the previous LPOS value plus one if the tape is moving forward and the previous LPOS value minus one if the tape is moving backward. Even if the LPOS words from the two servo channels are both bad, but not all of the bits in the LPOS word are bad. The system uses the remaining good bits from the two servo channels to verify all of the bits of the LPOS prediction word.
摘要翻译：即使磁带驱动系统的两个伺服通道都由于缺陷而无法检测到LPOS信息，也能够可靠地再现LPOS信息的磁带驱动系统。如果磁带正向移动，则系统识别LPOS序列依次增加1，如果磁带沿向后方向移动，则LPOS序列递减1。 LPOS信息的这种顺序属性适用于LPOS预测，其中LPOS预测是先前的LPOS值，如果磁带正向前移动，则前一LPOS值减去1，如果磁带向后移动，则前一LPOS值减1。即使来自两个伺服通道的LPOS字都是坏的，但LPOS字中的所有位都不好。该系统使用来自两个伺服通道的剩余良好位来验证LPOS预测字的所有位。

4. 发明授权

US07817799B2 Maintaining encryption key integrity 有权
标题翻译：维护加密密钥的完整性
公开(公告)号：US07817799B2
公开(公告)日：2010-10-19
申请号：US11530012
申请日：2006-09-07
申请人： Paul Merrill Greco , Melanie Jean Sandberg , Scott Jeffrey Schaffer
发明人： Paul Merrill Greco , Melanie Jean Sandberg , Scott Jeffrey Schaffer
IPC分类号： H04L9/00
CPC分类号： H04L9/0891 , H04L9/0894
摘要： Provided are a method, system, and article of manufacture, wherein a first write only register is maintained in an encryption engine of a cryptographic unit. A second write only register is maintained in a decryption engine of the cryptographic unit. A cryptographic key is written in the first write only register and the second write only register, wherein the cryptographic key is inaccessible for reading from any entity that is external to the cryptographic unit.
摘要翻译：提供了一种方法，系统和制品，其中第一只写寄存器被保存在密码单元的加密引擎中。第二只写寄存器被保存在密码单元的解密引擎中。加密密钥被写入第一只写寄存器和第二只写寄存器中，其中加密密钥是不可访问的，用于从密码单元外部的任何实体进行读取。

5. 发明授权

US07903812B2 Detection and handling of encryption key and initialization vector 失效
标题翻译：加密密钥和初始化向量的检测和处理
公开(公告)号：US07903812B2
公开(公告)日：2011-03-08
申请号：US11530010
申请日：2006-09-07
申请人： Paul Merrill Greco , Melanie Jean Sandberg , Scott Jeffrey Schaffer
发明人： Paul Merrill Greco , Melanie Jean Sandberg , Scott Jeffrey Schaffer
IPC分类号： H04L9/00
CPC分类号： G06F21/80 , G06F21/79 , H04L9/065 , H04L9/0894 , H04L2209/56
摘要： Provided are a method, system, and article of manufacture that maintains, at a decryption unit, and expected key identifier and an expected initialization vector. A key identifier and an initialization vector are received at the decryption unit, wherein a plurality of encrypted data records are preceded by the key identifier and the initialization vector in a data stream, and wherein the plurality of encrypted data records have been encrypted with a cryptographic key that is recoverable by the decryption unit from the key identifier. An initiation is made of the reading of the plurality of encrypted data records of the data stream, in response to determining at the decryption unit that the received key identifier matches the expected key identifier. Certain embodiments are implemented in a storage library, comprising at least one storage drive, and at least one decryption unit included in the at least one storage drive, wherein in certain embodiments the storage library is a tape library. Certain additional embodiments are implemented in a storage drive, comprising a removable storage medium and at least one decryption unit coupled to the removable storage medium, wherein in certain embodiments the storage drive is a tape drive.
摘要翻译：提供了一种在解密单元处保持预期密钥标识符和预期初始化向量的方法，系统和制品。在解密单元处接收密钥标识符和初始化向量，其中多个加密数据记录之前是数据流中的密钥标识符和初始化向量，并且其中多个加密的数据记录已经用密码加密密钥可由密钥标识符由解密单元恢复。响应于在解密单元确定接收到的密钥标识符与预期的密钥标识符匹配，启动数据流的多个加密数据记录的读取。某些实施例在包括至少一个存储驱动器的存储库和包括在至少一个存储驱动器中的至少一个解密单元的存储库中实现，其中在某些实施例中，存储库是磁带库。某些附加实施例在存储驱动器中实现，包括可移动存储介质和耦合到可移动存储介质的至少一个解密单元，其中在某些实施例中，存储驱动器是磁带驱动器。

6. 发明申请

US20100192036A1 SYSTEMS AND METHODS FOR EFFICIENT LOW DENSITY PARITY CHECK (LDPC) DECODING 有权
标题翻译：用于有效低密度奇偶校验（LDPC）解码的系统和方法
公开(公告)号：US20100192036A1
公开(公告)日：2010-07-29
申请号：US12360748
申请日：2009-01-27
申请人： Melanie Jean Sandberg , Matthew Michael Viens
发明人： Melanie Jean Sandberg , Matthew Michael Viens
IPC分类号： H03M13/05 , G06F11/07
CPC分类号： H03M13/13 , H03M13/1137
摘要： A system for low density parity code decoding according to one embodiment includes a plurality of variable node (vnode) logic modules for sequentially processing groups of vnode values associated with a codeword and outputting updated vnode values; a vnode memory for storing the vnode values and updated vnode values; a plurality of check node (cnode) logic modules for sequentially processing groups of cnode values and outputting updated vnode values; a cnode memory for storing the cnode values and updated cnode values; and logic for checking the codeword using the updated vnode values and the updated cnode values. Additional systems and methods are also presented.
摘要翻译：根据一个实施例的用于低密度奇偶码解码的系统包括多个可变节点（vnode）逻辑模块，用于顺序处理与码字相关联的vnode值组并输出更新的vnode值; 用于存储vnode值和更新的vnode值的vnode存储器; 多个校验节点（cnode）逻辑模块，用于顺序地处理cnode值组并输出更新的vnode值; 一个用于存储cnode值和更新的cnode值的cnode存储器; 以及使用更新的vnode值和更新的cnode值来检查码字的逻辑。还介绍了其他系统和方法。

7. 发明申请

US20080063186A1 DETECTION AND HANDLING OF ENCRYPTION KEY AND INITIALIZATION VECTOR 失效
标题翻译：加密密钥和初始化向量的检测和处理
公开(公告)号：US20080063186A1
公开(公告)日：2008-03-13
申请号：US11530010
申请日：2006-09-07
申请人： Paul Merrill Greco , Melanie Jean Sandberg , Scott Jeffrey Schaffer
发明人： Paul Merrill Greco , Melanie Jean Sandberg , Scott Jeffrey Schaffer
IPC分类号： H04L9/28
CPC分类号： G06F21/80 , G06F21/79 , H04L9/065 , H04L9/0894 , H04L2209/56
摘要： Provided are a method, system, and article of manufacture that maintains, at a decryption unit, and expected key identifier and an expected initialization vector. A key identifier and an initialization vector are received at the decryption unit, wherein a plurality of encrypted data records are preceded by the key identifier and the initialization vector in a data stream, and wherein the plurality of encrypted data records have been encrypted with a cryptographic key that is recoverable by the decryption unit from the key identifier. An initiation is made of the reading of the plurality of encrypted data records of the data stream, in response to determining at the decryption unit that the received key identifier matches the expected key identifier. Certain embodiments are implemented in a storage library, comprising at least one storage drive, and at least one decryption unit included in the at least one storage drive, wherein in certain embodiments the storage library is a tape library. Certain additional embodiments are implemented in a storage drive, comprising a removable storage medium and at least one decryption unit coupled to the removable storage medium, wherein in certain embodiments the storage drive is a tape drive.
摘要翻译：提供了一种在解密单元处保持预期密钥标识符和预期初始化向量的方法，系统和制品。在解密单元处接收密钥标识符和初始化向量，其中多个加密数据记录之前是数据流中的密钥标识符和初始化向量，并且其中多个加密的数据记录已经用密码加密密钥可由密钥标识符由解密单元恢复。响应于在解密单元确定接收到的密钥标识符与预期的密钥标识符匹配，启动数据流的多个加密数据记录的读取。某些实施例在包括至少一个存储驱动器的存储库和包括在至少一个存储驱动器中的至少一个解密单元的存储库中实现，其中在某些实施例中，存储库是磁带库。某些附加实施例在存储驱动器中实现，包括可移动存储介质和耦合到可移动存储介质的至少一个解密单元，其中在某些实施例中，存储驱动器是磁带驱动器。

8. 发明授权

US08560917B2 Systems and methods for efficient low density parity check (LDPC) decoding 有权
标题翻译：高效低密度奇偶校验（LDPC）解码的系统和方法
公开(公告)号：US08560917B2
公开(公告)日：2013-10-15
申请号：US12360748
申请日：2009-01-27
申请人： Melanie Jean Sandberg , Matthew Michael Viens
发明人： Melanie Jean Sandberg , Matthew Michael Viens
IPC分类号： H03M13/00
CPC分类号： H03M13/13 , H03M13/1137
摘要： A system for low density parity code decoding according to one embodiment includes a plurality of variable node (vnode) logic modules for sequentially processing groups of vnode values associated with a codeword and outputting updated vnode values; a vnode memory for storing the vnode values and updated vnode values; a plurality of check node (cnode) logic modules for sequentially processing groups of cnode values and outputting updated vnode values; a cnode memory for storing the cnode values and updated cnode values; and logic for checking the codeword using the updated vnode values and the updated cnode values. Additional systems and methods are also presented.
摘要翻译：根据一个实施例的用于低密度奇偶码解码的系统包括多个可变节点（vnode）逻辑模块，用于顺序处理与码字相关联的vnode值组并输出更新的vnode值; 用于存储vnode值和更新的vnode值的vnode存储器; 多个校验节点（cnode）逻辑模块，用于顺序地处理cnode值组并输出更新的vnode值; 一个用于存储cnode值和更新的cnode值的cnode存储器; 以及使用更新的vnode值和更新的cnode值来检查码字的逻辑。还介绍了其他系统和方法。

9. 发明申请

US20080240419A1 APPARATUS, SYSTEM, AND METHOD FOR TESTING DATA COMPRESSION AND DATA ENCRYPTION CIRCUITRY 审中-公开
标题翻译：用于测试数据压缩和数据加密电路的装置，系统和方法
公开(公告)号：US20080240419A1
公开(公告)日：2008-10-02
申请号：US11694842
申请日：2007-03-30
申请人： Melanie Jean Sandberg , Scott Jeffrey Schaffer
发明人： Melanie Jean Sandberg , Scott Jeffrey Schaffer
IPC分类号： G06F11/263 , H04K1/00
CPC分类号： G06F11/263 , H04L9/0637 , H04L9/0656 , H04L9/0869 , H04L2209/26 , H04L2209/30 , H04L2209/34
摘要： An apparatus, system, and method are disclosed for testing data compression and data encryption circuitry. A pattern configuration module generates initial pattern parameters. Holding registers store the initial pattern parameters. A pattern generation module generates patterns for compression/encryption logic. A detection module detects a failure of the compression/encryption logic. The failure of the compression/encryption logic may be a cyclic redundancy check failure of a decompression module and/or a message authentication code failure of a decryption module.
摘要翻译：公开了用于测试数据压缩和数据加密电路的装置，系统和方法。模式配置模块生成初始模式参数。保持寄存器存储初始模式参数。模式生成模块生成用于压缩/加密逻辑的模式。检测模块检测压缩/加密逻辑的故障。压缩/加密逻辑的故障可能是解压缩模块的循环冗余校验失败和/或解密模块的消息验证码失败。

10. 发明申请

US20080069343A1 SECURE TRANSMISSION OF CRYPTOGRAPHIC KEY 失效
标题翻译：安全传输关键
公开(公告)号：US20080069343A1
公开(公告)日：2008-03-20
申请号：US11530014
申请日：2006-09-07
申请人： Paul Merrill Greco , Melanie Jean Sandberg , Scott Jeffrey Schaffer
发明人： Paul Merrill Greco , Melanie Jean Sandberg , Scott Jeffrey Schaffer
IPC分类号： H04L9/00
CPC分类号： H04L9/0822
摘要： Provided are a method, system and article of manufacture, wherein a cryptographic key generator generates a cryptographic key. The cryptographic key generator encrypts the cryptographic key with a session key that is available to both the cryptographic key generator and a cryptographic unit. The encrypted cryptographic key is transmitted across a link from the cryptographic key generator to the cryptographic unit.
摘要翻译：提供了一种方法，系统和制品，其中加密密钥生成器生成加密密钥。加密密钥生成器使用可用于加密密钥生成器和加密单元的会话密钥对密码密钥进行加密。加密的加密密钥通过密码密钥发生器到密码单元的链路传输。

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