公开(公告)号：US20080065881A1

公开(公告)日：2008-03-13

申请号：US11530021

申请日：2006-09-07

申请人： Erika Marianna Dawson ,  Paul Merrill Greco ,  Glen Alan Jaquette ,  James Mitchell Karp

发明人： Erika Marianna Dawson ,  Paul Merrill Greco ,  Glen Alan Jaquette ,  James Mitchell Karp

IPC分类号： H04L9/00

CPC分类号： H04L9/0822 ,  H04L9/088 ,  H04L9/0894

摘要： Provided are a method, system, and article of manufacture recovering remnant encrypted data on a removable storage media. An end of data (EOD) marker is detected on a removable storage media, wherein a first encryption key is associated with data preceding the EOD marker. Following the EOD marker, an identifier of a second encryption key associated with data following the EOD marker is read in response to detecting the EOD marker. The identifier is used to access the second encryption key and the second encryption key is used to decrypt the data following the EOD marker.

摘要翻译： 提供了在可移动存储介质上恢复残余加密数据的方法，系统和制品。 在可移动存储介质上检测数据结束（EOD）标记，其中第一加密密钥与EOD标记之前的数据相关联。 在EOD标记之后，响应于检测到EOD标记，读取与EOD标记之后的数据相关联的第二加密密钥的标识符。 该标识符用于访问第二加密密钥，第二加密密钥用于对EOD标记之后的数据进行解密。

公开(公告)号：US07271971B2

公开(公告)日：2007-09-18

申请号：US11003283

申请日：2004-12-03

申请人： Robert Allen Hutchins ,  Glen Alan Jaquette ,  Evangelos S. Eleftheriou ,  Sedat Oelcer

发明人： Robert Allen Hutchins ,  Glen Alan Jaquette ,  Evangelos S. 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 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：US07106533B2

公开(公告)日：2006-09-12

申请号：US10966531

申请日：2004-10-15

申请人： Evangelos S. Eleftheriou ,  Ernest Stewart Gale ,  Robert Allen Hutchins ,  Glen Alan Jaquette ,  Sedat Oelcer

发明人： Evangelos S. Eleftheriou ,  Ernest Stewart Gale ,  Robert Allen Hutchins ,  Glen Alan Jaquette ,  Sedat Oelcer

IPC分类号： G11B20/10

CPC分类号： H03M1/1042 ,  G11B20/10 ,  G11B2220/90

摘要： An apparatus, system, and method are disclosed for mitigating signal asymmetry. An analog to digital converter samples an analog signal from a read head and converts the sample to a digital input signal. The digital input signal addresses a look-up module, and the look-up module outputs a modified digital signal. The modified digital signal value is a specified function of the digital input signal value, wherein the specified function is configured to mitigate the asymmetry of the digital input signal. The modified digital signal value may be periodically recalculated to adjust for read head wear.

摘要翻译： 公开了一种减轻信号不对称性的装置，系统和方法。 模数转换器从读取头采样模拟信号，并将样本转换为数字输入信号。 数字输入信号寻址查找模块，查找模块输出修改后的数字信号。 修改的数字信号值是数字输入信号值的指定函数，其中指定的功能被配置为减轻数字输入信号的不对称性。 可以周期性地重新计算修改的数字信号值以调整读头磨损。

公开(公告)号：US06950257B1

公开(公告)日：2005-09-27

申请号：US10836671

申请日：2004-04-29

申请人： Paul Merrill Greco ,  Glen Alan Jaquette ,  Hiroshi Itagaki ,  Hironobu Nagura ,  Hirokazu Nakayama ,  Satoshi Tohji ,  Terue Watanabe

发明人： Paul Merrill Greco ,  Glen Alan Jaquette ,  Hiroshi Itagaki ,  Hironobu Nagura ,  Hirokazu Nakayama ,  Satoshi Tohji ,  Terue Watanabe

IPC分类号： G11B5/008 ,  G11B5/09 ,  G11B15/087 ,  G11B15/20 ,  G11B20/10 ,  G11B20/12 ,  G11B27/032 ,  G11B27/036 ,  G11B27/30 ,  G11B27/32

CPC分类号： G11B20/1205 ,  G11B5/00813 ,  G11B15/087 ,  G11B15/20 ,  G11B20/10 ,  G11B27/032 ,  G11B27/036 ,  G11B27/3027 ,  G11B27/328 ,  G11B2020/10898 ,  G11B2020/10907 ,  G11B2220/90

摘要： Backspacing over data to overwrite the data as recorded on magnetic tape is provided logically, rather than by causing a magnetic tape to drive to backhitch. The data is written to the magnetic tape as it was before it was logically changed in order to insure that the data is preserved on tape. Recovery of the data is from a succeeding data set which logically invalidates the original data by a superseding identifier. Control logic arranges data transactions for writing to magnetic tape as data sets; and, in response to backspace and overwrite commands, or when transactions are accumulated into a succeeding data set, rewrites the original transaction adjusted in accordance with the commands as a superseding data set downstream from the original transaction, logically invalidating the original transaction by setting a superseding identifier in the superseding data set(s).

摘要翻译： 逻辑上提供了对数据进行覆盖以覆盖磁带上记录的数据，而不是通过使磁带驱动到后退。 数据被写入磁带，因为它是在逻辑上改变之前，以确保数据保存在磁带上。 来自后续数据集的数据的恢复，其通过替代标识符逻辑地使原始数据无效。 控制逻辑将数据交易写入磁带作为数据集; 并且响应于退格和重写命令，或者当事务被累积到后续数据集中时，重写根据命令调整的原始事务作为来自原始事务下游的替代数据集，通过设置原始事务来逻辑地使原始事务无效 在取代的数据集中替代标识符。

公开(公告)号：US06937411B2

公开(公告)日：2005-08-30

申请号：US09923599

申请日：2001-08-06

申请人： Brian Gerard Goodman ,  Glen Alan Jaquette ,  Leonard George Jesionowski ,  Judson Allen McDowell

发明人： Brian Gerard Goodman ,  Glen Alan Jaquette ,  Leonard George Jesionowski ,  Judson Allen McDowell

IPC分类号： G11B5/008 ,  G11B5/78 ,  G11B15/087 ,  G11B15/12 ,  G11B20/12 ,  G11B27/10 ,  G11B27/11 ,  G11B27/32 ,  G11B5/09

CPC分类号： G11B15/125 ,  G11B5/00813 ,  G11B5/78 ,  G11B15/087 ,  G11B20/1205 ,  G11B27/107 ,  G11B27/11 ,  G11B27/328 ,  G11B2220/655 ,  G11B2220/95

摘要： Provided is a method, system, and program for storing data in a storage medium. A layout of a storage medium including a first and second user data sections is provided, wherein the first user data section comprises a faster access storage space than the second user data section. A determination is made of a first set of data to be accessed with less delay than a second set of data. The first set of data is written to the first user data section and the second set of data is written to the second user data section.

摘要翻译： 提供了一种用于在存储介质中存储数据的方法，系统和程序。 提供了包括第一和第二用户数据部分的存储介质的布局，其中第一用户数据部分包括比第二用户数据部分更快的访问存储空间。 以比第二组数据更少的延迟来确定要访问的第一组数据。 第一组数据被写入第一用户数据部分，第二组数据被写入第二用户数据部分。

公开(公告)号：US06816093B1

公开(公告)日：2004-11-09

申请号：US10726941

申请日：2003-12-03

申请人： Glen Alan Jaquette

发明人： Glen Alan Jaquette

IPC分类号： H03M700

CPC分类号： H04L65/605 ,  G11B20/00007 ,  G11B20/18 ,  G11B2020/1062 ,  G11B2020/1074 ,  G11B2020/183 ,  G11B2020/1896 ,  H04L29/06027

摘要： A source data stream is distributed to two or more compression paths that provide a corresponding number of compressed data streams that are concurrently encoded onto a recording medium as a set of media tracks. In one embodiment, buffer space within each compression path is monitored and the source data stream is directed to a ‘starved’ compression path. Metadata is inserted into the compressed data streams to facilitate reconstruction of the source data stream from the compressed data streams. The source data stream may be reconstructed by concurrently decoding the media tracks, decompressing the compressed data streams to a corresponding set of decompressed data streams, and merging the decompressed streams into an output data stream as directed by the metadata. The present invention overcomes the bottlenecks and other issues previously associated with context-based compression within digital media recording systems.

摘要翻译： 源数据流被分配到两个或更多个压缩路径，其提供作为一组媒体轨道并行地编码到记录介质上的相应数量的压缩数据流。 在一个实施例中，监视每个压缩路径内的缓冲区空间，并将源数据流引导到“饥饿”压缩路径。 将元数据插入到压缩数据流中以便于从压缩数据流重建源数据流。 源数据流可以通过同时解码媒体轨道，将压缩数据流解压缩到相应的解压缩数据流集合，并按照元数据的指示将解压缩流合并成输出数据流来重构。 本发明克服了以前在数字媒体记录系统中与基于上下文的压缩相关联的瓶颈和其它问题。

公开(公告)号：US06272086B1

公开(公告)日：2001-08-07

申请号：US08976209

申请日：1997-11-18

申请人： Glen Alan Jaquette ,  Leonard George Jesionowski ,  John Edward Kulakowski ,  Judson Allen McDowell

发明人： Glen Alan Jaquette ,  Leonard George Jesionowski ,  John Edward Kulakowski ,  Judson Allen McDowell

IPC分类号： G11B509

CPC分类号： G11B27/3027 ,  G11B7/00745 ,  G11B11/10502 ,  G11B11/10584 ,  G11B11/10595 ,  G11B13/04 ,  G11B20/1217

摘要： A tamper-resistant Hard-WORM data storage system and a magneto-optical storage disk therefor is disclosed. The disk has a plurality of sectors thereon containing one or more uniquely formatted fields to provide an indication that the disk is a Write-Once Read Many (WORM) disk. A motor is provided in the storage system for rotating the disk at an operational rotational speed and a laser read/write (R/W) head unit is provided for reading and writing information in the sectors. A read/write (R/W) control unit within the storage system controls read and write operations on the disk in response to commands from an external data processing device, such as a computer. The R/W control unit is adapted to decode the one or more uniquely formatted fields in order to read and correctly interpret information contained therein. In an additional aspect of the disclosure, the R/W control unit disables erase operations in sectors containing uniquely formatted fields but allows such operations in sectors that do not contain such fields in order to permit calibration testing and the maintenance of media defect lists, first available sector lists and the like.

摘要翻译： 公开了一种防篡改的Hard-WORM数据存储系统及其磁光存储盘。 磁盘具有多个扇区，其上包含一个或多个唯一格式化的字段以提供该盘是一次写入多次（WORM）磁盘的指示。 在存储系统中设置有用于以操作旋转速度旋转盘的电动机，并且提供用于在扇区中读取和写入信息的激光读/写（R / W）头单元。 存储系统内的读/写（R / W）控制单元响应来自诸如计算机的外部数据处理设备的命令来控制磁盘上的读写操作。 R / W控制单元适于对一个或多个唯一格式化的字段进行解码，以便读取并正确地解读其中包含的信息。 在本公开的另一方面，R / W控制单元在包含唯一格式化字段的扇区中禁用擦除操作，但是在不包含这些字段的扇区中允许这样的操作，以便允许校准测试和媒体缺陷列表的维护 可用扇区列表等。

公开(公告)号：US06218970B1

公开(公告)日：2001-04-17

申请号：US09152067

申请日：1998-09-11

申请人： Glen Alan Jaquette

发明人： Glen Alan Jaquette

IPC分类号： H03M700

CPC分类号： G06T9/005 ,  H03M7/3084

摘要： A method and system for handling literals in a Lempel-Ziv data compression system. The literals are arranged in a storage array in an MRU/LRU format in a defined sequential MRU/LRU order, with shorter MRU/LRU reference codes assigned to the MRU literals and longer MRU/LRU reference codes to the LRU literals. Upon receiving an input literal, a selector selects the literal and a reference encoder provides the assigned MRU/LRU reference code for the literal as the output. The literals are then rearranged. An incrementor responds to the literal selection, by incrementing downward one location in the sequential order, all the literals in the storage array from the top of the MRU order to the one of the literals in the order immediately preceding the selected literal, and the selector moves the selected literal to the top of the MRU order.

摘要翻译： 一种在Lempel-Ziv数据压缩系统中处理文字的方法和系统。 文字以具有定义的顺序MRU / LRU顺序的MRU / LRU格式的存储阵列排列，将MRU / LRU参考代码分配给MRU文字，将更长的MRU / LRU参考代码分配给LRU文字。 当接收到输入文字时，选择器选择文字，参考编码器将文字的分配的MRU / LRU参考代码提供为输出。 然后文字重新排列。 递增器响应文字选择，按顺序向下递增一个位置，将存储阵列中的所有字面值从MRU顺序的顶部向所选文字的前面的顺序递增到文字中的一个，选择器 将选定的文字移动到MRU顺序的顶部。

公开(公告)号：US5999110A

公开(公告)日：1999-12-07

申请号：US24422

申请日：1998-02-17

申请人： Mario Blaum ,  Steven Robert Hetzler ,  Glen Alan Jaquette ,  William John Kabelac

发明人： Mario Blaum ,  Steven Robert Hetzler ,  Glen Alan Jaquette ,  William John Kabelac

IPC分类号： G11B20/14 ,  G11B20/12 ,  G11B20/18 ,  H03M7/00 ,  H03M13/00

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。

公开(公告)号：US5930065A

公开(公告)日：1999-07-27

申请号：US859830

申请日：1997-05-16

申请人： Thomas Robert Albrecht ,  Robert Carl Barrett ,  James Howard Eaton ,  Robert Allen Hutchins ,  Glen Alan Jaquette

发明人： Thomas Robert Albrecht ,  Robert Carl Barrett ,  James Howard Eaton ,  Robert Allen Hutchins ,  Glen Alan Jaquette

IPC分类号： G11B5/584 ,  G11B20/10 ,  G11B21/10 ,  G11B27/10 ,  G11B27/30 ,  G11B27/19

CPC分类号： G11B21/10 ,  G11B27/107 ,  G11B27/3027 ,  G11B5/584 ,  G11B20/10009 ,  G11B2220/90

摘要： Disclosed is a magnetic tape media having addressing data information superimposed on prerecorded track following servo information. The servo information is recorded in magnetic flux transition patterns defining at least one longitudinal servo track. A servo burst pattern of at least two repeated pairs of non-parallel magnetic flux transitions is provided, at least one of which transitions is slanted or otherwise continuously longitudinally variable across the width of the servo track. At least two transitions of the repeated pairs are shifted longitudinally with respect to other of the transitions, the shifted transitions comprising the superimposed addressing data information. Also disclosed is a magnetic tape media having prerecorded combined servo and data information recorded in repeated pairs of magnetic flux dual transitions, at least one of the repeated pairs of dual transitions having a different width with respect to other of the transitions, the different width transitions comprising data information.

摘要翻译： 公开了一种磁带介质，其具有叠加在伺服信息之后的预先记录的轨道上的寻址数据信息。 伺服信息被记录在限定至少一个纵向伺服轨道的磁通转变图案中。 提供了至少两个重复的非平行磁通转换对的伺服突发图案，其中至少一个转变在伺服轨迹的宽度上倾斜或以其它方式连续纵向变化。 重复对的至少两个转换相对于其他转换被纵向移动，移位的转换包括叠加的寻址数据信息。 还公开了一种磁带介质，其具有以重复的磁通双重转换对记录的预先记录的组合伺服和数据信息，重复的双重转换对中的至少一个相对于其他转换具有不同的宽度，不同的宽度转变 包括数据信息。