公开(公告)号：US20240144968A1

公开(公告)日：2024-05-02

申请号：US18400011

申请日：2023-12-29

Applicant: FUJIFILM CORPORATION

Inventor： Toru NAKAO ,  Tetsuya KANEKO ,  Yoichi AKANO

IPC: G11B5/588 ,  G11B5/008 ,  G11B5/596

CPC classification number: G11B5/588 ,  G11B5/00882 ,  G11B5/59638

Abstract: A first straight line region and a second straight line region of the straight line region pair are inclined in opposite directions with respect to a first imaginary straight line. The first straight line region has a steeper inclined angle with respect to the first imaginary straight line than the second straight line region. Positions of both ends of the first straight line region and positions of both ends of the second straight line region are aligned in a direction corresponding to a width direction of a magnetic tape. A plurality of gap patterns deviate from each other by a predetermined interval in a direction corresponding to a longitudinal direction of the magnetic tape, between the gap patterns adjacent to each other along the direction corresponding to the width direction of the magnetic tape. A substrate is inclined with respect to the first imaginary straight line.

公开(公告)号：US20240096364A1

公开(公告)日：2024-03-21

申请号：US18467474

申请日：2023-09-14

Applicant: FUJIFILM Corporation

Inventor： Norihito KASADA

IPC: G11B5/706 ,  G11B5/008 ,  G11B5/588

CPC classification number: G11B5/70615 ,  G11B5/00817 ,  G11B5/588

Abstract: The magnetic tape includes: a non-magnetic support; and a magnetic layer containing a ferromagnetic powder, in which a friction coefficient measured on a base portion of a surface of the magnetic layer is 0.35 or less, and standard deviation σ of the friction coefficient in a width direction of the surface of the magnetic layer is 0.05 nm or less.

公开(公告)号：US20180240475A1

公开(公告)日：2018-08-23

申请号：US15900106

申请日：2018-02-20

Applicant: FUJIFILM Corporation

Inventor： Norihito Kasada

IPC: G11B5/008 ,  G11B5/73 ,  G11B5/588 ,  G11B5/706 ,  G11B5/708 ,  G11B5/70

CPC classification number: G11B5/71 ,  G11B5/00813 ,  G11B5/588 ,  G11B5/70 ,  G11B5/7013 ,  G11B5/70678 ,  G11B5/7085 ,  G11B5/7305 ,  G11B5/78 ,  G11B5/845

Abstract: The magnetic tape includes a non-magnetic support; and a magnetic layer including ferromagnetic powder and a binding agent on the non-magnetic support, in which a center line average surface roughness Ra measured regarding the surface of the magnetic layer is equal to or smaller than 1.8 nm, a logarithmic decrement acquired by a pendulum viscoelasticity test performed regarding the surface of the magnetic layer is equal to or smaller than 0.050, the ferromagnetic powder is ferromagnetic hexagonal ferrite powder, the magnetic layer includes an abrasive, and a tilt cos θ of the ferromagnetic hexagonal ferrite powder with respect to a surface of the magnetic layer acquired by cross section observation performed by using a scanning transmission electron microscope is 0.85 to 1.00.

公开(公告)号：US09263087B2

公开(公告)日：2016-02-16

申请号：US14527722

申请日：2014-10-29

Applicant: International Business Machines Corporation

Inventor： Robert G. Biskeborn ,  Calvin S. Lo

IPC: G11B5/027 ,  G11B5/55 ,  G11B20/10 ,  G11B5/588 ,  G11B20/12 ,  G11B27/30 ,  G11B5/008 ,  G11B5/48 ,  G11B5/584

CPC classification number: G11B20/10222 ,  G11B5/00813 ,  G11B5/00826 ,  G11B5/00878 ,  G11B5/027 ,  G11B5/4893 ,  G11B5/584 ,  G11B5/588 ,  G11B20/1201 ,  G11B27/30

Abstract: A method according to one embodiment includes reading and/or writing data to a magnetic medium using a head having an array of transducers. An axis of the array is defined between opposite ends thereof, and is tilted at an angle greater than 0° from a line oriented perpendicular to an intended direction of tape travel thereacross during the reading and/or writing. The method further includes at least one of: introducing, by a controller, a timing offset to at least one servo channel to compensate for offset in servo readback signals introduced by the tilt of the head, introducing, by the controller, a timing offset to at least some read channels to compensate for offset in readback signals introduced by a tilt of the head, and introducing, by the controller, a timing offset to at least some write channels to enable writing of transitions that are readable by a non-tilted head.

Abstract translation: 根据一个实施例的方法包括使用具有换能器阵列的头读取和/或向磁介质写入数据。 阵列的轴线被限定在其相对端之间，并且在读取和/或写入期间，从垂直于磁带行进方向的线垂直于大于0°的角度倾斜。 该方法还包括以下中的至少一个：控制器将定时偏移引入到至少一个伺服信道以补偿由头部的倾斜引入的伺服回读信号中的偏移，由控制器将定时偏移引入到 至少一些读取通道以补偿由头部的倾斜引入的回读信号中的偏移，并且由控制器引入到至少一些写入通道的定时偏移，以使得能够写入由非倾斜头部读取的转换 。

公开(公告)号：US09251828B2

公开(公告)日：2016-02-02

申请号：US14241931

申请日：2012-07-04

Applicant: Giovanni Cherubini ,  Jens Jelitto ,  Mark A. Lantz

Inventor： Giovanni Cherubini ,  Jens Jelitto ,  Mark A. Lantz

IPC: G11B5/588 ,  G11B5/008 ,  G11B5/48 ,  G11B5/584

CPC classification number: G11B5/588 ,  G11B5/008 ,  G11B5/00847 ,  G11B5/4893 ,  G11B5/584

Abstract: In a method for operating a tape storage system, while a tape is being moved in a tape drive across a tape head for one or more of reading and writing user data from/to a data track of the tape, a read element of the tape head, which read element is assigned to the data track, is moved transverse to a moving direction of the tape for a distance of more than a width of the data track. A transverse position of one or more of the following elements is subject to a signal supplied by the read element during its transverse move: The read element; another read element assigned to the data track; and a write element assigned to the data track.

Abstract translation: 在一种用于操作磁带存储系统的方法中，当磁带在磁带驱动器中跨磁带头移动以用于从/从磁带的数据轨道读取和写入用户数据的一个或多个时，磁带的读取元件 将读取元素分配给数据轨道的头部横向于磁带的移动方向移动超过数据轨道宽度的距离。 以下元件中的一个或多个的横向位置在读取元件的横向移动期间经受提供的信号：读取元件; 分配给数据轨道的另一个读取元素; 以及分配给数据轨道的写入元件。

公开(公告)号：US20160012840A1

公开(公告)日：2016-01-14

申请号：US14860464

申请日：2015-09-21

Applicant: International Business Machines Corporation

Inventor： Robert G. Biskeborn ,  Philipp Herget ,  Calvin S. Lo

IPC: G11B5/588 ,  G11B5/008

CPC classification number: G11B5/588 ,  G11B5/00813 ,  G11B5/00826 ,  G11B5/09 ,  G11B5/11 ,  G11B5/115 ,  G11B5/2652 ,  G11B5/29 ,  G11B5/4893 ,  G11B5/56 ,  G11B5/584

Abstract: A computer program product for orienting a head includes a computer readable storage medium having program instructions embodied therewith. The program instructions are readable and/or executable by a controller to cause the controller to: determine a desired pitch for transducers for reading and/or writing to a magnetic tape; and cause a mechanism to orient a head to achieve the desired pitch. The array of a first of the modules is offset from the array of a second of the modules in a first direction parallel to the axis of the array of the second module such that the transducers of the first module are about aligned with the transducers of the second module in the intended direction of tape travel thereacross when the axes are oriented at an angle greater than 0.2° relative to a line oriented perpendicular to the intended direction of tape travel.

Abstract translation: 用于定向头部的计算机程序产品包括具有其中实施的程序指令的计算机可读存储介质。 程序指令可由控制器读取和/或执行以使控制器确定用于读取和/或写入磁带的换能器的期望间距; 并且引起机构使头部定向以实现期望的间距。 第一模块的阵列在与第二模块的阵列的轴平行的第一方向上偏离第二模块的阵列，使得第一模块的换能器与第二模块的换能器大致对准 当相对于垂直于预期的磁带行进方向定向的线以大于0.2°的角度定向时，磁带在预期方向上行进的第二模块。

公开(公告)号：US09208809B2

公开(公告)日：2015-12-08

申请号：US13875226

申请日：2013-05-01

Applicant: International Business Machines Corporation

Inventor： Robert G. Biskeborn ,  Philipp Herget ,  Calvin S. Lo

IPC: G11B5/265 ,  G11B5/29 ,  G11B5/584 ,  G11B5/008 ,  G11B5/56

CPC classification number: G11B5/588 ,  G11B5/00813 ,  G11B5/00826 ,  G11B5/09 ,  G11B5/11 ,  G11B5/115 ,  G11B5/2652 ,  G11B5/29 ,  G11B5/4893 ,  G11B5/56 ,  G11B5/584

Abstract: In one general embodiment, an apparatus includes at least two modules, each of the modules having an array of transducers, wherein the at least two modules are fixed relative to each other, wherein an axis of each array is defined between opposite ends thereof, wherein the axes of the arrays are oriented about parallel to each other, wherein the array of a first of the modules is offset from the array of a second of the modules in a first direction parallel to the axis of the array of the second module such that the transducers of the first module are about aligned with the transducers of the second module in an intended direction of tape travel thereacross; and a mechanism for orienting the modules about an axis orthogonal to the plane in which the arrays reside to control a transducer pitch presented to a tape.

Abstract translation: 在一个一般实施例中，装置包括至少两个模块，每个模块具有换能器阵列，其中至少两个模块相对于彼此固定，其中每个阵列的轴线限定在其相对端之间，其中 阵列的轴线彼此平行取向，其中第一模块的阵列在平行于第二模块的阵列的轴线的第一方向上偏离第二模块的阵列，使得 所述第一模块的换能器与所述第二模块的所述换能器沿所述磁带行进的预期方向大致对齐; 以及用于使模块围绕垂直于阵列所在的平面的轴定向以控制呈现给带的换能器间距的机构。

公开(公告)号：US20150131180A1

公开(公告)日：2015-05-14

申请号：US14387572

申请日：2013-04-24

Applicant: International Business Machines Corporation

Inventor： Giovanni Cherubini ,  Jens Jelitto ,  Angeliki Pantazi

IPC: G11B5/588 ,  G11B5/008

CPC classification number: G11B5/588 ,  G11B5/00817 ,  G11B5/584

Abstract: An apparatus for operating a tape storage device comprises a first tape skew determination unit for providing a first tape skew value concerning a skew of a tape in the tape storage device, and a second tape skew determination unit for providing a second tape skew value concerning the skew of the tape. An actuator adjusts one or more of a rotational orientation of a tape head of the tape storage device which tape head is provided for reading and/or writing data from/to the tape, and a motion direction of the tape dependent on the first tape skew value and the second tape skew value.

Abstract translation: 一种用于操作磁带存储装置的装置包括：第一磁带歪斜确定单元，用于提供关于磁带存储装置中的磁带的偏斜的第一磁带歪斜值;以及第二磁带歪斜确定单元，用于提供关于磁带存储装置的第二磁带歪斜值 胶带偏斜 致动器调节磁带存储装置的带头的旋转取向中的一个或多个，该磁带存储装置的带头被提供用于从/向磁带读取和/或写入数据，以及取决于第一磁带扭曲的磁带的运动方向 值和第二个磁带歪斜值。

公开(公告)号：US09025273B1

公开(公告)日：2015-05-05

申请号：US14052666

申请日：2013-10-11

Applicant: Western Digital Technologies, Inc.

Inventor： Timothy A. Ferris ,  Joseph J. Crowfoot

IPC: G11B5/54 ,  G11B21/02 ,  G11B5/588 ,  G11B15/473

CPC classification number: G11B15/473 ,  G11B5/5547 ,  G11B5/556 ,  G11B5/588

Abstract: A disk drive is disclosed comprising a microactuator configured to actuate a head over a disk, and control circuitry comprising a first digital accumulator responsive to a first register. The first digital accumulator generates at least one of a velocity command and a position command for the microactuator, and the control circuitry configures the first register in order to limit at least one of a velocity and an acceleration of the microactuator.

Abstract translation: 公开了一种磁盘驱动器，其包括被配置为致动磁头上的磁头的微致动器，以及响应于第一寄存器的包括第一数字累加器的控制电路。 第一数字累加器产生用于微致动器的速度命令和位置命令中的至少一个，并且控制电路配置第一寄存器以便限制微致动器的速度和加速度中的至少一个。

公开(公告)号：US09019651B2

公开(公告)日：2015-04-28

申请号：US14289452

申请日：2014-05-28

Applicant: International Business Machines Corporation

Inventor： Nhan X. Bui ,  Angeliki Pantazi ,  Tomoko Taketomi ,  Kazuhiro Tsuruta

IPC: G11B5/58 ,  G11B5/596 ,  G11B5/588 ,  G11B5/584 ,  G11B20/10

CPC classification number: G11B5/588 ,  G11B5/584 ,  G11B20/10009 ,  G11B20/10305 ,  G11B20/10398 ,  G11B2220/90

Abstract: Provided are a computer program product, system, and method for determining a skew error signal (SES) offset used to determine an SES to adjust heads in a drive unit. A determination is made of a first difference in a first orientation with respect to a direction of movement of the recordable storage media based on first and second position information read by first and second servo read elements on a first head. A determination is made of a second difference in a second orientation with respect to the direction of movement of the recordable storage media based on third and fourth position information read by the first servo read element and a third servo read element on a second head. An offset, calculated based on the determined first and second difference, is used to generate an error signal to adjust the first and second heads.

Abstract translation: 提供了一种用于确定用于确定SES以调整驱动单元中的磁头的偏斜误差信号（SES）偏移的计算机程序产品，系统和方法。 基于在第一头上的第一和第二伺服读取单元读取的第一和第二位置信息，确定相对于可记录存储介质的移动方向的第一方位的第一差异。 基于由第一伺服读取元件读取的第三和第四位置信息和第二头上的第三伺服读取元件，确定相对于可记录存储介质的移动方向的第二取向的第二差异。 基于所确定的第一和第二差异计算的偏移量用于产生误差信号以调整第一和第二磁头。