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1. 发明授权

US10490219B1 Using signals from perpendicular and longitudinal multitrack magnetic fields for error recovery and/or servo control 有权
公开(公告)号：US10490219B1
公开(公告)日：2019-11-26
申请号：US16123120
申请日：2018-09-06
申请人： Seagate Technology LLC
发明人： Mehmet Fatih Erden , Walter R. Eppler
IPC分类号： G11B5/596 , G11B5/48 , G11B5/54 , G11B5/56 , G11B5/58
CPC分类号： G11B5/59627 , G11B5/4826 , G11B5/488 , G11B5/4813 , G11B5/4886 , G11B5/54 , G11B5/56 , G11B5/58
摘要： First and second tracks are read simultaneously via a first reader mounted in a head-gimbal assembly. The first reader provides a first signal based on detecting a total perpendicular field of the first and second tracks. The first and second tracks are read simultaneously via a second reader mounted in the head-gimbal assembly. The second reader provides a second signal based on detecting a total longitudinal field of the first and second tracks. At least one of a position error and a timing error of at least one of the first and second readers are determined based on user data read via the respective first and second signals.

2. 发明授权

US10008226B1 Dynamic head offset selection for tape drive 有权
公开(公告)号：US10008226B1
公开(公告)日：2018-06-26
申请号：US15636441
申请日：2017-06-28
申请人： International Business Machines Corporation
发明人： Nhan X. Bui , Tsuyoshi Miyamura , Eiji Ogura , Tomoko Taketomi , Kazuhiro Tsuruta
IPC分类号： G11B5/584 , G11B5/55 , G11B5/008 , G11B15/06 , G11B5/48 , G11B23/30 , B23K26/382 , G11B5/58 , G11B5/78
CPC分类号： G11B5/5504 , B23K26/382 , G11B5/00817 , G11B5/4893 , G11B5/58 , G11B5/584 , G11B5/78 , G11B15/06 , G11B15/602 , G11B23/30
摘要： A method and system for adjusting a servo head in a tape drive is disclosed. Position information for the servo head can be obtained and used to determine if an adjustment of one of the servo heads is necessary. By comparing the position of the tape against two servo heads, erroneous adjustments to the servo head can be obviated.

3. 发明申请

US20180130495A1 ACTIVE CONTROL OF A READ/WRITE HEAD 审中-公开
公开(公告)号：US20180130495A1
公开(公告)日：2018-05-10
申请号：US15848685
申请日：2017-12-20
申请人： L2 Drive Inc.
发明人： Karim Kaddeche
IPC分类号： G11B21/21 , G11B5/48 , G11B5/58
CPC分类号： G11B21/21 , G11B5/4833 , G11B5/58 , G11B5/6017 , G11B5/6058
摘要： The invention generally relates to hard disk drives with a disk and a read/write head, and methods for preventing contact between the disk and the read/write head. The hard disk drive includes a z-axis actuator configured to control movement of the read/write head, and to prevent contact between the read/write head and the disk, based on signals from a controller that indicate when the distance between the read/write head and the disk are outside a predetermined range, such as between 0 and 10.0 nm.

4. 发明授权

US09704521B1 Actuator limiters for multiple disk-stack, shared actuator hard disk drive 有权
公开(公告)号：US09704521B1
公开(公告)日：2017-07-11
申请号：US15199892
申请日：2016-06-30
申请人： HGST Netherlands B.V.
发明人： Anant Shah , Thomas Tamayo
IPC分类号： G11B5/54 , G11B5/58
CPC分类号： G11B5/58 , G11B5/4886 , G11B5/54 , G11B21/22
摘要： An actuator rotational limiter mechanism for a multiple disk-stack, shared actuator hard disk drive includes an actuator comb with a protruding pin, whereby rotation of the actuator comb is limited by an attraction between the pin and a magnet. An enclosure base may include a curved slot in which the pin is disposed, where one end of the slot may correspond to the head slider being near the inner diameter of a first disk stack and the other end of the slot may correspond to the head slider being near the inner diameter of a second disk stack adjacent to the first disk stack. The magnet may be disposed within or adjacent to the curved slot, at a midway location, whereby the pin is held in place by the magnet at a position that corresponds to the head slider being parked on a ramp positioned between the disk stacks.

5. 发明申请

US20160254015A1 TAPE RECORDING HEAD HAVING NON-PARALLEL GAPS AND DISSIMILAR TRANSDUCER PITCHES 有权
标题翻译：具有非平行GAPS和DISSIMILAR传感器板的磁带记录头
公开(公告)号：US20160254015A1
公开(公告)日：2016-09-01
申请号：US15148758
申请日：2016-05-06
申请人： International Business Machines Corporation
发明人： Robert G. Biskeborn , Calvin S. Lo
IPC分类号： G11B5/56 , G11B5/008 , G11B5/584
CPC分类号： G11B5/56 , G11B5/00826 , G11B5/4893 , G11B5/58 , G11B5/584 , G11B20/1201 , G11B2020/1281
摘要： A drive-implemented method according to one embodiment includes determining an extent of tape dimensional instability, and adjusting a tilt angle of a first array of transducers based on the determined extent. A readback operation is performed using the array oriented at the tile angle. During the readback operation, a longitudinal axis of the first arrays is not parallel to the longitudinal axis of a second array of transducers coupled thereto.
摘要翻译：根据一个实施例的驱动实现方法包括确定磁带尺寸不稳定性的程度，以及基于所确定的范围来调整第一阵列换能器的倾斜角。使用以瓦片角度定向的阵列执行回读操作。在回读操作期间，第一阵列的纵向轴线不平行于与其耦合的第二转换器阵列的纵向轴线。

6. 发明授权

US09299371B1 Disk drive slider with sense amplifier for coupling to a preamp through a supply/bias line and a read signal line 有权
公开(公告)号：US09299371B1
公开(公告)日：2016-03-29
申请号：US14719127
申请日：2015-05-21
申请人： Western Digital Technologies, Inc.
发明人： Dennis W. Hogg
IPC分类号： G11B5/455 , G11B5/58 , G11B5/48 , G11B5/55 , G11B5/09
CPC分类号： G11B5/455 , G11B5/012 , G11B5/02 , G11B5/09 , G11B5/4853 , G11B5/5526 , G11B5/58 , G11B20/10018 , G11B20/10027
摘要： A disk drive slider is disclosed comprising a first read element for generating a first read signal, and a first sense amplifier comprising a first input terminal coupled to the first read element, a first output terminal coupled to a first output line, and a first supply terminal coupled to a supply line. The first sense amplifier is for amplifying the first read signal to generate a first amplified read signal, the first output line is for transmitting the first amplified read signal to a preamp, and the supply line is for coupling to the preamp in order to supply power to the first sense amplifier and supply a first bias to the first read element.

7. 发明授权

US09202495B2 Method and apparatus for detecting proximity contact between a transducer and a medium 有权
标题翻译：用于检测换能器和介质之间的接近接触的方法和装置
公开(公告)号：US09202495B2
公开(公告)日：2015-12-01
申请号：US11799204
申请日：2007-05-01
申请人： Dongming Liu , Lin Zhou , Lance E. Stover
发明人： Dongming Liu , Lin Zhou , Lance E. Stover
IPC分类号： G11B5/54 , G11B21/22 , G11B5/58 , G11B5/31 , G11B5/455 , G11B5/60 , G11B5/105 , G11B5/55
CPC分类号： G11B5/58 , G11B5/105 , G11B5/3136 , G11B5/455 , G11B5/556 , G11B5/6064 , G11B5/607
摘要： A method and apparatus are provided for positioning a transducer relative to a track of a data storage medium and inducing lateral modulation of transducer the relative to the track. An element of the transducer is actuated toward the storage medium during the lateral modulation, and atomic interaction is detected between the element and the storage medium because of a change in a response to the lateral modulation of the transducer due to the atomic interaction.
摘要翻译：提供了一种用于相对于数据存储介质的轨道定位换能器并且相对于轨道引起换能器的横向调制的方法和装置。在侧向调制期间，换能器的元件朝向存储介质致动，并且由于原子相互作用而对换能器的横向调制的响应的变化，元件和存储介质之间检测到原子相互作用。

8. 发明授权

US09070413B2 Integrated recording head with selective movement 有权
标题翻译：集成记录头选择运动
公开(公告)号：US09070413B2
公开(公告)日：2015-06-30
申请号：US13647168
申请日：2012-10-08
申请人： Dallas W. Meyer
发明人： Dallas W. Meyer
IPC分类号： G11B5/58 , G11B21/21 , G11B5/48 , G11B5/55 , G11B21/24
CPC分类号： G11B21/21 , G11B5/48 , G11B5/4826 , G11B5/4873 , G11B5/5552 , G11B5/58
摘要： A recording head for use in magnetic storage devices is disclosed. The recording head includes a transducer that is bi-directionally movable with respect to a surface of the magnetic storage medium, thereby enabling improved positioning of the transducer during recording head read and write operations. Various structures are disclosed to bi-directionally actuate the recording head transducer. In one embodiment, an interleaver assembly having a plurality of flexure assemblies employs a motor including magnetic portions for selective, bi-directional actuation. In another embodiment, electrostatic charges are employed in the flexure assemblies for selective actuation. In yet another embodiment, piezoelectric elements are included to provide for selective actuation.
摘要翻译：公开了一种用于磁存储装置的记录头。记录头包括相对于磁存储介质的表面双向移动的换能器，从而能够在记录头读写操作期间改进换能器的定位。公开了各种结构以双向致动记录头传感器。在一个实施例中，具有多个挠曲组件的交织器组件采用包括用于选择性双向致动的磁性部分的电动机。在另一个实施例中，静电荷用于挠曲组件以用于选择性致动。在另一个实施例中，包括压电元件以提供选择性致动。

9. 发明授权

US09013818B1 Disk drive measuring reader/writer gap by measuring fractional clock cycle over disk radius 有权
$Disk drive measuring reader/writer gap by measuring fractional clock cycle over disk radius$
标题翻译：磁盘驱动器通过测量磁盘半径上的分数时钟周期来测量读/写器间隙
公开(公告)号：US09013818B1
公开(公告)日：2015-04-21
申请号：US14137314
申请日：2013-12-20
申请人： Western Digital Technologies, Inc.
发明人： Zhenyu Sun , Teik Ee Yeo
IPC分类号： G11B5/09 , G11B5/58 , G11B5/596
CPC分类号： G11B5/58 , G11B5/59616 , G11B5/59627
摘要： A disk drive is disclosed comprising a disk, and a head actuated radially over the disk, wherein the head comprises a read element separated from a write element by a reader/writer gap. A disk-locked clock is synchronized to a rotation of the disk, wherein the disk-locked clock comprises a plurality of clock cycles, and the reader/writer gap spans a first number of the clock cycles comprising an integer of the clock cycles plus a fraction of one of the clock cycles. The fraction of one of the clock cycles is measured when the head is positioned at a first plurality of radial locations across the disk, and a second plurality of radial locations is estimated where the fraction substantially equals a full one of the clock cycles.
摘要翻译：公开了一种磁盘驱动器，其包括盘和径向地驱动在盘上的磁头，其中磁头包括通过读/写器间隙与写入元件分离的读取元件。磁盘锁定时钟与盘的旋转同步，其中盘锁定时钟包括多个时钟周期，并且读/写器间隙跨越包括时钟周期的整数的第一数量的时钟周期加上其中一个时钟周期的分数。当头部位于穿过盘的第一多个径向位置时，测量时钟周期中的一个的分数，并且估计第二多个径向位置，其中分数基本上等于整个时钟周期。

10. 发明授权

US08891198B2 Method and apparatus for operating a tape storage device 有权
标题翻译：用于操作磁带存储装置的方法和装置
公开(公告)号：US08891198B2
公开(公告)日：2014-11-18
申请号：US13947843
申请日：2013-07-22
申请人： International Business Machines Corporation
发明人： Nhan X. Bui , Giovanni Cherubini , Jens Jelitto , Angeliki Pantazi , Kazuhiro Tsuruta
IPC分类号： G11B5/584 , G11B20/20 , G11B15/48 , G11B15/18 , G11B15/60 , G11B5/58 , G11B20/10
CPC分类号： G11B15/1808 , G11B5/58 , G11B5/584 , G11B15/602 , G11B20/10009 , G11B20/10305 , G11B20/10388 , G11B2220/90
摘要： In a method for operating a tape storage device comprising a tape head for reading and/or writing data from/to a tape in the tape storage device, a first tape skew value concerning a skew of the tape is determined and the first tape skew value is converted into a first skew control signal by means of a skew feedback controller. A second tape skew value concerning the skew of the tape is determined, and the second tape skew value is converted into a second skew control signal by a feed-forward controller. At least one compensation signal for the second skew control signal is determined, and at least one of a rotational orientation of the tape head and a tape motion direction of the tape is controlled dependent on the second skew control signal and the compensation signal in case the first skew control signal fails.
摘要翻译：在一种用于操作磁带存储设备的方法中，该磁带存储设备包括用于从磁带存储设备中的磁带读取和/或写入数据的磁带头，确定了关于磁带的偏斜的第一磁带扭曲值，并且第一磁带扭曲值通过偏斜反馈控制器转换成第一偏斜控制信号。确定关于带的偏斜的第二带偏移值，并且通过前馈控制器将第二带偏移值转换为第二偏斜控制信号。确定用于第二歪斜控制信号的至少一个补偿信号，并且根据第二歪斜控制信号和补偿信号来控制带头的旋转取向和带的带运动方向中的至少一个，第一歪斜控制信号失败。

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