公开(公告)号：US20060119969A1

公开(公告)日：2006-06-08

申请号：US11003283

申请日：2004-12-03

申请人： Robert Hutchins ,  Glen Jaquette ,  Evangelos Eleftheriou ,  Sedat Oelcer

发明人： Robert Hutchins ,  Glen Jaquette ,  Evangelos Eleftheriou ,  Sedat Oelcer

IPC分类号： G11B5/035 ,  G11B20/10

CPC分类号： G11B20/10 ,  G11B5/02

摘要： A read channel equalizer of a magnetic tape drive which equalizes digitally sampled magnetic signals detected by a read head is dynamically adapted. A detector of equalizer dynamic adaptation logic compares equalizer output signals to desired values that are based on the decoding scheme (such as +2, 0 and −2 for PR4) to sense equalizer output signals that are offset from at least one desired value, and signals the fact of each offset and its polarity as amplitude independent error signals. The signaled sensed amplitude independent error signals are fed back to adjustable taps of the equalizer. The simplified error signals thus avoid complex calculations of waveform errors, such as least mean square calculations. The error signals may be weighted and may be adjusted to align synchronously provided error signals with asynchronous taps of the equalizer.

摘要翻译： 磁头驱动器的读取通道均衡器，其均衡由读取头检测到的数字采样磁信号。 均衡器动态适配逻辑的检测器将均衡器输出信号与基于解码方案（例如PR4的+2,0和-2）的期望值进行比较，以感测与至少一个期望值偏移的均衡器输出信号，以及 将每个偏移及其极性的事实表示为与振幅无关的误差信号。 信号感知的与振幅无关的误差信号反馈到均衡器的可调节抽头。 因此，简化的误差信号避免了波形误差的复杂计算，例如最小均方根计算。 误差信号可以被加权并且可以被调整以使同步提供的误差信号与均衡器的异步抽头对齐。

公开(公告)号：US20060085718A1

公开(公告)日：2006-04-20

申请号：US10969652

申请日：2004-10-19

申请人： Glen Jaquette ,  Johnny Teale

发明人： Glen Jaquette ,  Johnny Teale

IPC分类号： H03M13/00

CPC分类号： H03M13/2903 ,  H03M13/27 ,  H03M13/2906

摘要： An error correction code system, e.g. of a magnetic tape drive, applies error correction redundancy to data, separates it, or interleaves it, and records it into separate groups. An error correction encoder applies an outer error correction code to one of the separate groups of information, forming one set of rows of information and outer ECC information. An error correction encoder applies an outer error correction code to another separate group of information, forming another set of rows of information and outer ECC information. A data organizer interleaves the one set of rows of information and outer ECC information with the another set of rows of information and outer ECC information for recording on tracks of a recording media in an interleaved pattern of one set of rows of information and outer ECC information with another set of rows of information and outer ECC information.

摘要翻译： 纠错码系统，例如 的磁带驱动器，对数据应用纠错冗余，将其分离或交错，并将其记录到单独的组中。 纠错编码器将外部纠错码应用于单独信息组之一，形成一组信息行和外部ECC信息。 纠错编码器将外部纠错码应用于另一单独的信息组，形成另一组信息行和外部ECC信息。 数据管理器将一组信息行和外部ECC信息与另一组信息行和外部ECC信息进行交织，以便以一组信息行和外部ECC信息的交织模式记录在记录介质的轨道上 与另一组信息行和外部ECC信息。

公开(公告)号：US20050286160A1

公开(公告)日：2005-12-29

申请号：US11215758

申请日：2005-08-29

申请人： Nhan Bui ,  James Eaton ,  Junichi Fukuda ,  Glen Jaquette ,  Eiji Ogura ,  Mark Taylor ,  Kazuhiro Tsuruta

发明人： Nhan Bui ,  James Eaton ,  Junichi Fukuda ,  Glen Jaquette ,  Eiji Ogura ,  Mark Taylor ,  Kazuhiro Tsuruta

IPC分类号： G11B5/008 ,  G11B5/584 ,  G11B5/78 ,  G11B5/09

CPC分类号： G11B5/584 ,  G11B5/00813 ,  G11B5/78

摘要： In a tape having separate servo bands of patterns positioned laterally across the tape, the patterns of a separate servo band have at least one differentiating characteristic with respect to patterns of another of the separate servo bands. The differentiating characteristic allows identification of the separate servo bands. For example, the patterns of a separate servo band have differing azimuthal orientations of detectable transitions with respect to another servo band, such as being laterally inverted. In another, variations in the width of gaps of patterns are made with respect to another servo band. In another, variations are made in the number of the detectable transitions of patterns with respect to the patterns of another servo band.

公开(公告)号：US20050286159A1

公开(公告)日：2005-12-29

申请号：US11215627

申请日：2005-08-29

申请人： Nhan Bui ,  James Eaton ,  Junichi Fukuda ,  Glen Jaquette ,  Eiji Ogura ,  Mark Taylor ,  Kazuhiro Tsuruta

发明人： Nhan Bui ,  James Eaton ,  Junichi Fukuda ,  Glen Jaquette ,  Eiji Ogura ,  Mark Taylor ,  Kazuhiro Tsuruta

IPC分类号： G11B5/008 ,  G11B5/584 ,  G11B5/78 ,  G11B5/09

CPC分类号： G11B5/584 ,  G11B5/00813 ,  G11B5/78

摘要： In a tape having separate servo bands of patterns positioned laterally across the tape, the patterns of a separate servo band have at least one differentiating characteristic with respect to patterns of another of the separate servo bands. The differentiating characteristic allows identification of the separate servo bands. For example, the patterns of a separate servo band have differing azimuthal orientations of detectable transitions with respect to another servo band, such as being laterally inverted. In another, variations in the width of gaps of patterns are made with respect to another servo band. In another, variations are made in the number of the detectable transitions of patterns with respect to the patterns of another servo band.

摘要翻译： 在具有横向跨越带的位置的分离的图案的带的带中，单独的伺服带的图案相对于另一个分离的伺服带的图案具有至少一个微分特性。 微分特性允许识别单独的伺服带。 例如，单独的伺服带的图案具有相对于另一个伺服带的可检测转变的方位取向不同，例如横向倒置。 另一方面，相对于另一个伺服带，进行图案间隙宽度的变化。 另一方面，在相对于另一个伺服带的图案的图案的可检测转变的数量上进行变化。

公开(公告)号：US20050041317A1

公开(公告)日：2005-02-24

申请号：US10642982

申请日：2003-08-18

申请人： Glen Jaquette

发明人： Glen Jaquette

IPC分类号： G06F3/06 ,  G11B5/008 ,  G11B5/48 ,  G11B5/584 ,  G11B5/86 ,  G11B20/10 ,  G11B20/12 ,  G11B5/09 ,  G11B15/12

CPC分类号： G11B15/005 ,  G11B5/00813 ,  G11B5/4893 ,  G11B5/584 ,  G11B5/86 ,  G11B15/04 ,  G11B15/125 ,  G11B20/10 ,  G11B2020/1062 ,  G11B2020/10962

摘要： A recording system of a magnetic tape drive is operated to cause one separate set of write heads to write data discontinuously to magnetic tape as received, and to save the data, and, during the same operation, to cause another separate set of write heads to rewrite data to magnetic tape in a continuous arrangement. The writing may be in parallel and simultaneous. Thus, during the same operation, and at the same time, the separate sets of the plurality of write heads, temporarily write the received data to magnetic tape so that the sender can erase its copy, and rewrite the saved data to the magnetic tape in a permanent arrangement, without waiting to complete first writing received data, to complete subsequently rewriting the data, and repeating.

公开(公告)号：US20050030662A1

公开(公告)日：2005-02-10

申请号：US10638080

申请日：2003-08-08

申请人： Nhan Bui ,  James Eaton ,  Junichi Fukuda ,  Glen Jaquette ,  Eiji Ogura ,  Mark Taylor ,  Kazuhiro Tsuruta

发明人： Nhan Bui ,  James Eaton ,  Junichi Fukuda ,  Glen Jaquette ,  Eiji Ogura ,  Mark Taylor ,  Kazuhiro Tsuruta

IPC分类号： G11B5/008 ,  G11B5/584 ,  G11B5/78 ,  G11B5/09

CPC分类号： G11B5/584 ,  G11B5/00813 ,  G11B5/78

摘要： In magnetic tape having separate longitudinal servo bands of servo information with superimposed data information, the separate servo bands have selected different superimposed data information, to identify the separate servo bands for independent addressability. The servo information comprises non-parallel laterally extending transitions to indicate lateral positioning, and the selected different superimposed data information may comprise a lack thereof in portion(s) of the servo bands. Where the superimposed data information is longitudinal position information of the tape, the selected different superimposed data information may comprise different longitudinal position information of one or more servo band(s). The selected different superimposed data information may comprise a band identifier in the superimposed data information of one or more of the servo bands.

公开(公告)号：US20100177421A1

公开(公告)日：2010-07-15

申请号：US12351725

申请日：2009-01-09

申请人： Masayuki Demura ,  Glen Jaquette ,  Hisato Matsuo ,  Keisuke Tanaka

发明人： Masayuki Demura ,  Glen Jaquette ,  Hisato Matsuo ,  Keisuke Tanaka

IPC分类号： G11B5/09 ,  G11B15/00

CPC分类号： G11B20/1201 ,  G11B20/18 ,  G11B20/1866 ,  G11B2020/1222 ,  G11B2220/90 ,  H03M13/271 ,  H03M13/2909

摘要： Methods, logic, apparatus and computer program product write data, comprising less than a full Data Set, to magnetic tape. Data is received from a host, a do-not-interleave command is issued and C1 and C2 ECC are computed. Codeword Quad (CQ) sets are then formed. At least one CQ set of the Data Set is written to a magnetic tape in a non-interleaved manner and a Data Set Information Table (DSIT) is written to the magnetic tape immediately following the at least one written CQ set. An address transformation may be used to cancel interleaving. Writing a CQ set may include writing a plurality of contiguous instances of the CQ set to the magnetic tape to maintain the effectiveness of ECC capability.

摘要翻译： 方法，逻辑，设备和计算机程序产品写入数据，包括少于一个完整的数据集，到磁带。 从主机接收数据，发出不交错命令，并计算C1和C2 ECC。 然后形成Codeword Quad（CQ）集合。 将数据集的至少一个CQ集以非交错方式写入磁带，并且数据集信息表（DSIT）被写入紧跟在至少一个写入的CQ集之后的磁带上。 可以使用地址变换来取消交织。 编写CQ集可以包括将CQ集的多个连续实例写入磁带以保持ECC能力的有效性。

公开(公告)号：US20070260623A1

公开(公告)日：2007-11-08

申请号：US11381905

申请日：2006-05-05

申请人： Glen Jaquette ,  Thomas Mittelholzer

发明人： Glen Jaquette ,  Thomas Mittelholzer

IPC分类号： G06F7/00

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。

公开(公告)号：US20070206310A1

公开(公告)日：2007-09-06

申请号：US11733934

申请日：2007-04-11

申请人： ROBERT HUTCHINS ,  Glen Jaquette ,  Evangelos Eleftheriou ,  Sedat Oelcer

发明人： ROBERT HUTCHINS ,  Glen Jaquette ,  Evangelos Eleftheriou ,  Sedat Oelcer

IPC分类号： G11B5/035

CPC分类号： G11B20/10 ,  G11B5/02

摘要： A read channel equalizer of a magnetic tape drive which equalized digitally sampled magnetic signals detected by a read head is dynamically adapted. A detector of equalizer dynamic adaptation logic compares equalizer output signals to desired values that are based on the decoding scheme (such as +2, 0 and −2 for PR4) to sense equalizer output signals that are offset from at least one desired value, and signals the fact of each offset and it polarity as amplitude independent error signals. The signaled sensed amplitude independent error signals are fed back to adjustable taps of the equalizer. The simplified error signals thus avoid complex calculations of waveform errors, such as least mean square calculations. The error signals may be weighted and may be adjusted to align synchronously provided error signals with asynchronous taps of the equalizer.

摘要翻译： 驱动磁头驱动器的读取通道均衡器，其均衡由读取头检测到的数字采样的磁信号。 均衡器动态适配逻辑的检测器将均衡器输出信号与基于解码方案（例如PR4的+2,0和-2）的期望值进行比较，以感测与至少一个期望值偏移的均衡器输出信号，以及 将每个偏移的事实表示为与振幅无关的误差信号。 信号感知的与振幅无关的误差信号反馈到均衡器的可调节抽头。 因此，简化的误差信号避免了波形误差的复杂计算，例如最小均方根计算。 误差信号可以被加权并且可以被调整以使同步提供的误差信号与均衡器的异步抽头对齐。

公开(公告)号：US20070168664A1

公开(公告)日：2007-07-19

申请号：US11329002

申请日：2006-01-10

申请人： Brian Goodman ,  Glen Jaquette ,  Leonard Jesionowski

发明人： Brian Goodman ,  Glen Jaquette ,  Leonard Jesionowski

IPC分类号： H04L9/00

CPC分类号： H04L9/0827 ,  H04L9/083

摘要： A key server provides keys for encryption and/or decryption for data storage drives. A first communication link provides at least data communication with respect to the data storage drive; a second communication link, separate from the first communication link, provides communication between the data storage drive and the key server; and the key server provides the encryption and/or decryption keys over the second communication link.

摘要翻译： 密钥服务器为数据存储驱动器的加密和/或解密提供密钥。 第一通信链路至少提供与数据存储驱动器的数据通信; 与第一通信链路分开的第二通信链路提供数据存储驱动器和密钥服务器之间的通信; 并且密钥服务器在第二通信链路上提供加密和/或解密密钥。