公开(公告)号：US20050152067A1

公开(公告)日：2005-07-14

申请号：US11013279

申请日：2004-12-14

申请人： Yung Yip ,  James Anderson ,  Douglas Johnson ,  Denis Langlois ,  Richard Molstad

发明人： Yung Yip ,  James Anderson ,  Douglas Johnson ,  Denis Langlois ,  Richard Molstad

IPC分类号： G11B5/008 ,  G11B5/147 ,  G11B5/29 ,  G11B5/39 ,  G11B5/48 ,  G11B5/49 ,  G11B5/584

CPC分类号： G11B5/00826 ,  G11B5/29 ,  G11B5/3958 ,  G11B5/4976 ,  G11B5/584

摘要： The invention provides a system comprising a non-linear array of magnetoresistive (MR) heads arranged in a two-dimensional matrix for reading information stored on magnetic media. The non-linear array of MR heads may comprise a planar array formed by a plurality of linear arrays of MR heads stacked to define a plurality of layers. Each of the linear arrays may share at least one shield element with another linear array of the non-linear array. In general, each layer is offset by one written track pitch and the number of layers of the invention is equal to the number of written track pitches in a channel pitch. The invention can also be used in a system for reading and writing information to magnetic media at improved track pitches relative to conventional read/write systems. Accordingly, the invention can facilitate increased storage densities on magnetic media and may have advantages in terms of quality of readout and ease of manufacture relative to magneto-optical read heads or other read heads.

摘要翻译： 本发明提供一种系统，其包括以二维矩阵排列的用于读取存储在磁性介质上的信息的磁阻（MR）磁头的非线性阵列。 MR头的非线性阵列可以包括由堆叠以限定多个层的MR头的多个线性阵列形成的平面阵列。 每个线性阵列可以与非线性阵列的另一线性阵列共享至少一个屏蔽元件。 通常，每个层被一个写入的轨道间距偏移，本发明的层数等于通道间距中写入的轨道间距的数量。 本发明也可用于相对于常规读/写系统以改进的磁道间距读取和写入磁介质的系统。 因此，本发明可以促进磁性介质上的增加的存储密度，并且在读出质量方面以及相对于磁光读取头或其它读取头的制造容易性方面可以具有优点。

公开(公告)号：US20060126207A1

公开(公告)日：2006-06-15

申请号：US10859376

申请日：2004-06-02

申请人： Douglas Johnson ,  Denis Langlois ,  Richard Molstad ,  Yung Yip

发明人： Douglas Johnson ,  Denis Langlois ,  Richard Molstad ,  Yung Yip

IPC分类号： G11B5/09 ,  G11B5/584

CPC分类号： G11B5/584 ,  G11B5/59633

摘要： A servo pattern is described that facilitates high resolution and wide dynamic range to accurately pinpoint servo track centerlines on a magnetic tape. The servo pattern provides both absolute positioning information over an entire servo band and absolute positioning information relative to the centerline of each servo track included in the servo band. Therefore, the servo pattern includes implicit servo track identification in a single servo band, eliminating the need for conventional track identification marks. In other words, the servo pattern, itself, can distinguish one servo track from another servo track in the single servo band as well as provide highly accurate positioning information relative to each of the servo track centerlines.

摘要翻译： 描述了一种有助于高分辨率和宽动态范围的伺服模式，以精确地精确定位磁带上的伺服轨道中心线。 伺服模式提供整个伺服带上的绝对定位信息和相对于包括在伺服带中的每个伺服轨道的中心线的绝对定位信息。 因此，伺服模式包括在单个伺服频带中的隐式伺服磁道识别，消除了对常规磁道识别标记的需要。 换句话说，伺服模式本身可以区分单个伺服频带中的一个伺服磁道与另一个伺服磁道，并且相对于每个伺服磁道中心线提供高精度的定位信息。

公开(公告)号：US20070223126A1

公开(公告)日：2007-09-27

申请号：US11391574

申请日：2006-03-27

申请人： Larold Olson ,  Brian Findlay ,  C. Jennings ,  Douglas Johnson ,  Denis Langlois ,  Richard Molstad

发明人： Larold Olson ,  Brian Findlay ,  C. Jennings ,  Douglas Johnson ,  Denis Langlois ,  Richard Molstad

IPC分类号： G11B5/09

CPC分类号： G11B5/00813 ,  G11B5/86 ,  G11B20/1201 ,  G11B20/1833 ,  G11B2220/232 ,  G11B2220/90

摘要： In an embodiment, a data storage tape includes a first side including recorded data and a second side including recorded error correcting code data for the recorded data on the first side. In another embodiment, a data storage tape comprises a first side including recorded data and a second side including a copy of the recorded data. Embodiments of the invention may distribute related data across both sides of a data storage tape and as a result may reduce the probability that a location-dependent error in the data storage tape will result in irretrievable data loss. Embodiments of the invention may be particularly useful for systems that can simultaneously retrieve or record data on both sides of a dual-sided data storage tape.

摘要翻译： 在一个实施例中，数据存储带包括包括记录数据的第一侧和包括第一侧上记录数据的记录纠错码数据的第二侧。 在另一个实施例中，数据存储带包括包括记录数据的第一侧和包括记录数据的副本的第二侧。 本发明的实施例可以在数据存储磁带的两侧分布相关数据，并且因此可能降低数据存储磁带中与位置相关的错误将导致不可恢复的数据丢失的可能性。 本发明的实施例对于能够同时在双面数据存储带的两侧检索或记录数据的系统可能特别有用。

公开(公告)号：US20060274446A1

公开(公告)日：2006-12-07

申请号：US11144355

申请日：2005-06-03

申请人： Douglas Johnson ,  James Anderson ,  David Gobran ,  Denis Langlois

发明人： Douglas Johnson ,  James Anderson ,  David Gobran ,  Denis Langlois

IPC分类号： G11B5/584 ,  G11B5/09

CPC分类号： G11B5/584

摘要： The invention is directed to a data storage medium that includes a plurality of servo bands distributed across the data storage medium and a plurality of data tracks positioned between each of the plurality of distributed servo bands. The data storage medium comprises a servo band pitch of less than 200 micrometers. The large number of servo bands distributed across the data storage medium with a relatively small servo band pitch reduces the influence of media dimensional instability. In this way, the invention may substantially increase data read head positioning accuracy, especially in the case of narrow track widths. A read head array arranged in a two-dimensional matrix that includes a first servo read head, a second servo read head, and a plurality of data read heads positioned between the first and second servo read heads may be applied to a data storage medium as described herein.

公开(公告)号：US20070002487A1

公开(公告)日：2007-01-04

申请号：US11171958

申请日：2005-06-29

申请人： Denis Langlois ,  Douglas Johnson

发明人： Denis Langlois ,  Douglas Johnson

IPC分类号： G11B5/584

CPC分类号： G11B5/584

摘要： The invention is directed to a servo frame that includes servo windows written with different frequencies to provide redundant positioning information. The servo frame includes a set of first servo windows recorded at a first frequency and a set of second servo windows recorded at a second frequency arranged in a checkerboard-like pattern. The different frequencies of the servo windows allow the servo frame to achieve improved positioning information redundancy. A servo track may include a plurality of the servo frames described herein to accurately position data read/write heads adjacent corresponding data tracks. The redundancy built into each of the servo frames substantially minimizes errors in the positioning information.

摘要翻译： 本发明涉及一种包括以不同频率写入的伺服窗口以提供冗余定位信息的伺服帧。 伺服帧包括以第一频率记录的一组第一伺服窗口和以棋盘状图案布置的以第二频率记录的一组第二伺服窗口。 伺服窗口的不同频率允许伺服框架实现改进的定位信息冗余。 伺服轨道可以包括本文描述的多个伺服帧，以将数据读/写头精确地定位在相邻的数据轨道附近。 内置在每个伺服帧中的冗余基本上使定位信息中的错误最小化。

公开(公告)号：US20050185344A1

公开(公告)日：2005-08-25

申请号：US11041900

申请日：2005-01-24

申请人： Yoshihiko Ito ,  Hirohisa Koga ,  Takashi Abe ,  James Anderson ,  Denis Langlois

发明人： Yoshihiko Ito ,  Hirohisa Koga ,  Takashi Abe ,  James Anderson ,  Denis Langlois

IPC分类号： G11B5/584 ,  G11B5/008 ,  G11B5/29 ,  G11B5/56

CPC分类号： G11B5/584 ,  G11B5/0083

摘要： In general, the invention provides a magnetic head device and linear tape drive that widen the high frequency side of the servo range. In particular, the invention provides a magnetic head device comprising a magnetic head chip with multiple magnetic elements arranged for recording or playback of multiple tracks and a fine positioning structure that uses a bimodal construction that may widen the high frequency side of the servo range by increasing the resonant frequency of the magnetic head chip including the tracking structure and lowering the Q value of the resonance point. In addition, the invention includes a damping structure suitable for the fine positioning structure that improves high speed response by widening the range in which the magnetic head device can be used for a servo. The magnetic head device may use a linear tape drive method.

摘要翻译： 通常，本发明提供一种加宽伺服范围的高频侧的磁头装置和线性磁带驱动器。 特别地，本发明提供一种磁头装置，其包括磁头芯片，该磁头芯片具有多个用于记录或重放多个磁道的磁性元件，以及精细的定位结构，其使用双峰结构，该结构可以通过增加伺服范围的高频侧 包括跟踪结构的磁头芯片的谐振频率，并降低谐振点的Q值。 此外，本发明还包括一种适于精细定位结构的阻尼结构，其通过扩大磁头装置可用于伺服的范围来改善高速响应。 磁头装置可以使用线性磁带驱动方法。

公开(公告)号：US20050201017A1

公开(公告)日：2005-09-15

申请号：US11041511

申请日：2005-01-24

申请人： Hirohisa Koga ,  Takashi Abe ,  Yoshihiko Ito ,  James Anderson ,  Denis Langlois

发明人： Hirohisa Koga ,  Takashi Abe ,  Yoshihiko Ito ,  James Anderson ,  Denis Langlois

IPC分类号： G11B5/584 ,  G11B5/187 ,  G11B5/265 ,  G11B5/29 ,  G11B5/56

CPC分类号： G11B5/584 ,  G11B5/00826 ,  G11B5/5504

摘要： In general, the invention provides a magnetic head device and linear tape drive that increase the resonant frequency and the range of a servo system. In particular, the invention provides a magnetic head device comprising a magnetic head chip with multiple magnetic head elements that is a structural part of the fine positioning system which allows the magnetic head elements follow the data tracks on the linear magnetic tape. Consequently, weight is reduced thereby increasing the resonant frequency and servo bandwidth. In another embodiment, the invention provides a magnetic head comprising bimodal actuators that are formed into an S shape and displaced by applying voltage where the polarization direction is opposite from one end to the other. In particular, the head chip may remain stable and may be driven dynamically thereby allowing the mechanical resonance of the bimodal actuator (including the head chip) to increase to 1 kHz or higher.

摘要翻译： 通常，本发明提供了增加伺服系统的谐振频率和范围的磁头装置和线性带驱动器。 特别地，本发明提供了一种磁头装置，其包括具有多个磁头元件的磁头芯片，磁头元件是精确定位系统的结构部分，其允许磁头元件跟随线性磁带上的数据轨道。 因此，减轻重量，从而增加谐振频率和伺服带宽。 在另一个实施例中，本发明提供了一种磁头，其包括形成S形的双模致动器，并通过施加偏振方向从一端到另一端的电压来移位。 特别地，头部芯片可以保持稳定并且可以动态地驱动，从而允许双模致动器（包括头部芯片）的机械共振增加到1kHz或更高。

公开(公告)号：US20060171060A1

公开(公告)日：2006-08-03

申请号：US11051371

申请日：2005-02-03

申请人： James Anderson ,  Denis Langlois ,  Mark Weber

发明人： James Anderson ,  Denis Langlois ,  Mark Weber

IPC分类号： G11B5/584

CPC分类号： G11B5/584

摘要： The invention proposes the use of a piezoelectric crystal element as an actuator for data storage systems. In particular, the piezoelectric crystal element mechanically positions a head with respect to a data storage medium. More specifically, the invention may use a piezoelectric laminate crystal structure as a fine positioning actuator in a magnetic tape system in order to precisely position one or more heads with respect to tracks of the magnetic tape. Furthermore, in order to address hysteresis in the piezoelectric crystal element, the invention proposes the introduction of a high frequency periodic signal as part of the input to the piezoelectric crystal element.

摘要翻译： 本发明提出使用压电晶体元件作为数据存储系统的致动器。 特别地，压电晶体元件相对于数据存储介质机械地定位磁头。 更具体地，本发明可以使用压电层压晶体结构作为磁带系统中的精细定位致动器，以便相对于磁带的轨道精确地定位一个或多个磁头。 此外，为了解决压电晶体元件中的滞后现象，本发明提出了作为输入到压电晶体元件的一部分的高频周期信号的引入。

公开(公告)号：US20060186756A1

公开(公告)日：2006-08-24

申请号：US11062224

申请日：2005-02-18

申请人： Denis Langlois ,  James Anderson

发明人： Denis Langlois ,  James Anderson

IPC分类号： H01L41/09

CPC分类号： G11B5/584

摘要： The invention provides techniques for adjusting for actuator non-linearities in a data storage system. The invention is particularly useful for piezoelectric actuators, such as actuators that implement a bimorph piezoelectric crystal structure or a laminate piezoelectric crystal structure, although other actuators may present similar non-linearity issues. In one embodiment, the invention provides a method comprising applying a signal to an actuator of a data storage system, the actuator having a non-linear response, wherein the signal includes a linear drive component and a non-linear adjustment component, and positioning a data storage head with respect to a data storage medium via the actuator.

摘要翻译： 本发明提供了用于调整数据存储系统中的致动器非线性的技术。 本发明对于诸如实现双压电晶片压电晶体结构的致动器或层压型压电晶体结构的压电致动器特别有用，尽管其它致动器可能呈现类似的非线性问题。 在一个实施例中，本发明提供了一种方法，包括将信号施加到数据存储系统的致动器，所述致动器具有非线性响应，其中所述信号包括线性驱动部件和非线性调节部件， 数据存储头相对于数据存储介质。

公开(公告)号：US20060126212A1

公开(公告)日：2006-06-15

申请号：US11012795

申请日：2004-12-14

申请人： James Anderson ,  Denis Langlois

发明人： James Anderson ,  Denis Langlois

IPC分类号： G11B21/02 ,  G11B5/55

CPC分类号： G11B5/584 ,  G11B5/00826

摘要： The invention provides a read-while-write recording system for a linear data storage medium, such as magnetic tape or other data storage medium in which data is stored on parallel data tracks that extend along a length of the medium. The invention makes use of separate sliders for the read and write elements, and separate actuators to control the positioning of the sliders. Each of the sliders may also include servo elements to read servo marks. In this manner, the write elements of a first slider can be positioned independently from the read elements of a second slider in order to achieve improved head positioning with respect to data tracks on the linear data storage medium.

摘要翻译： 本发明提供了一种用于线性数据存储介质的读写同时记录系统，例如磁带或其他数据存储介质，其中数据存储在沿着介质长度延伸的并行数据轨道上。 本发明利用用于读取和写入元件的单独的滑块，以及单独的致动器来控制滑块的定位。 每个滑块还可以包括用于读取伺服标记的伺服元件。 以这种方式，第一滑块的写入元件可以独立于第二滑块的读取元件定位，以便相对于线性数据存储介质上的数据轨道实现改进的头位置。