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1. 发明授权

US11810602B2 Mechanism to shift the head span of a tape head at a wafer level 有权
公开(公告)号：US11810602B2
公开(公告)日：2023-11-07
申请号：US17470977
申请日：2021-09-09
申请人： International Business Machines Corporation
发明人： Icko E..T. Iben , Jason Liang , Hoodin Hamidi
IPC分类号： G11B5/31 , G11B5/48 , G11B5/265 , G11B5/29 , G11B5/008 , G11B5/39
CPC分类号： G11B5/3103 , G11B5/00826 , G11B5/265 , G11B5/29 , G11B5/3958 , G11B5/3977 , G11B5/4893
摘要： Provided are a magnetic tape head, a magnetic tape drive, and a computational device in which the magnetic tape head is comprised of a plurality of elements, wherein a pitch between adjacent elements of the plurality of elements is not identical. Selected elements of the plurality of elements that are shifted from a nominal position are selected in a symmetrical manner in the plurality of elements. A total of shifts of the elements of the plurality of elements that are shifted add up to a desired total shift to realign a plurality of modules, such that the median head span of each module type match as closely as possible to a desired value of a head span for all module types.

2. 发明公开

US20230169993A1 MAGNETIC RECORDING/REPRODUCING DEVICE AND MAGNETIC RECORDING/REPRODUCING METHOD 审中-公开
公开(公告)号：US20230169993A1
公开(公告)日：2023-06-01
申请号：US17860496
申请日：2022-07-08
申请人： KABUSHIKI KAISHA TOSHIBA , TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
发明人： Kaori KIMURA , Masaya OHTAKE , Akihiko TAKEO
IPC分类号： G11B5/29 , G11B5/48
CPC分类号： G11B5/29 , G11B5/4866 , G11B2005/0024
摘要： According to one embodiment, a magnetic recording/reproducing device includes a plurality of magnetic recording medium each including a recording surface, a plurality of assisted magnetic recording heads each provided with the recording surface in order to perform assisted recording, and an assisting amount adjustment part connected to the assisted magnetic recording heads in order to adjust an assisting amount of each assisted magnetic recording head corresponding to a recording capacity of the recording surface.

3. 发明授权

US11646053B2 Tape head design having same gap verify capabilities 有权
公开(公告)号：US11646053B2
公开(公告)日：2023-05-09
申请号：US17355590
申请日：2021-06-23
申请人： Western Digital Technologies, Inc.
发明人： David J. Seagle , Alexander Goncharov , Robert G. Biskeborn
IPC分类号： G11B5/48 , G11B5/265 , G11B5/29 , G11B5/008 , G11B5/23 , G11B5/39 , G11B15/46 , G11B5/11
CPC分类号： G11B5/3967 , G11B5/00817 , G11B5/23 , G11B5/265 , G11B5/29 , G11B5/3958 , G11B5/4893 , G11B5/11 , G11B15/46
摘要： The present disclosure generally relates to a tape drive including a tape head. The tape head comprises at least one same gap verify (SGV) module comprising a plurality of write transducer and read transducer pairs disposed on a substrate. In each pair, the write transducer comprises a write pole having a height, and the read transducer comprises a first shield disposed adjacent to the write pole. The write pole and the first shield of each pair are spaced apart a distance greater than or equal to about 20% of the height of the write pole. The SGV module is configured to write data to a tape using the write transducer of each pair and read verify the data written on the tape using the read transducer of each pair such that the write transducer and read transducer of each pair are concurrently operable.

4. 发明申请

US20180301162A1 RECORDING HEAD WITH MULTIPLE MAGNETIC WRITERS SIMULTANEOUSLY WRITING TO ADJACENT TRACKS 审中-公开
公开(公告)号：US20180301162A1
公开(公告)日：2018-10-18
申请号：US16010930
申请日：2018-06-18
申请人： Seagate Technology LLC
发明人： Mehmet Fatih Erden
IPC分类号： G11B5/265 , G11B5/596 , G11B5/29 , G11B5/48
CPC分类号： G11B5/2654 , G11B5/29 , G11B5/314 , G11B5/4886 , G11B5/5578 , G11B5/596 , G11B2005/0021
摘要： A recording head has a first magnetic writer and a second magnetic writer offset from the first magnetic writer in a downtrack and crosstrack direction. The recording head has leads configured to deliver respective first and second write and/or laser currents to the first and second writers. The first and second write and/or laser currents enable the first and second writers to simultaneously write to adjacent tracks of a magnetic disk.

5. 发明申请

US20180122412A1 ACHIEVING FINE MOTION BETWEEN MODULES IN A MAGNETIC HEAD 审中-公开
公开(公告)号：US20180122412A1
公开(公告)日：2018-05-03
申请号：US15802344
申请日：2017-11-02
申请人： International Business Machines Corporation
发明人： David H. F. Harper
IPC分类号： G11B5/584 , G11B5/48 , G11B5/29 , G11B5/008 , G11B5/265
CPC分类号： G11B5/584 , G11B5/00817 , G11B5/00826 , G11B5/265 , G11B5/29 , G11B5/4893
摘要： An apparatus, according to one embodiment, includes: a first module and a second module each having an array of transducers oriented orthogonal to an intended direction of tape travel thereacross, where the first module is movable relative to the second module. The apparatus also includes an actuator configured to exert a force on one of the modules for causing a relative movement of the first module with respect to the second module for aligning the transducers of the first module with the transducers of the second module in a direction of tape travel thereacross. Moreover, longitudinal axes of the arrays of the first and second modules are not pivotable from orthogonal to the intended direction of tape travel thereacross. Other systems, methods, and computer program products are described in additional embodiments.

6. 发明授权

US09767833B1 Wire bonding electrical lapping guides for tape head module 有权
公开(公告)号：US09767833B1
公开(公告)日：2017-09-19
申请号：US15237345
申请日：2016-08-15
申请人： HGST Netherlands B.V.
发明人： Diane L. Brown , Glenn P. Gee , Darrick T. Smith , Hicham M. Sougrati
IPC分类号： G11B5/265 , G11B5/105 , G11B5/31 , G11B5/008 , G11B5/127 , G11B5/10 , G11B5/48 , G11B21/16 , G11B5/29
CPC分类号： G11B5/3169 , G11B5/00813 , G11B5/102 , G11B5/105 , G11B5/1272 , G11B5/29 , G11B5/295 , G11B5/3166 , G11B5/3173 , G11B5/4853 , G11B21/16
摘要： A process for manufacturing a magnetic tape head module involves depositing over a wafer substrate electrical traces from respective electrical lapping guides (ELGs) to an area at an end of a tape head module also formed over the substrate, fabricating a closure adjacent to the tape head module where the closure terminates outside of the area at the end of the tape head module, and electrically connecting the electrical traces to an external circuit using a wire-bonding procedure, thereby electrically connecting each ELG to the external circuit. A plurality of electrical connection pads may be deposited at the area at the end of the tape head module, and each electrical trace electrically connected to one of the pads, where electrically connecting the traces to the external circuit includes wire-bonding the pads to the circuit.

7. 发明申请

US20170236535A1 Tape Head with Step-Like Cross-Sectional Profile 审中-公开
公开(公告)号：US20170236535A1
公开(公告)日：2017-08-17
申请号：US15042364
申请日：2016-02-12
申请人： International Business Machines Corporation
发明人： Robert G. BISKEBORN , Johan ENGELEN , Mark A. LANTZ , Hugo E. ROTHUIZEN
IPC分类号： G11B5/187 , G11B5/008
CPC分类号： G11B5/1871 , G11B5/00813 , G11B5/102 , G11B5/255 , G11B5/29 , G11B5/3169
摘要： A tape head is provided for reading and/or writing to a magnetic tape. The tape head including a step-like cross-sectional profile, so as to exhibit a riser between two treads, the latter respectively formed by a tape-bearing surface and a recessed surface, wherein: the tape-bearing surface is essentially flat and configured to contact a magnetic tape, and comprises at least one transducer, the latter being a read or a write element, configured to read or write to the magnetic tape, respectively; and the recessed surface is recessed from the tape-bearing surface by a distance h corresponding to a height of the riser, a width w of the recessed surface along a direction parallel to a longitudinal direction z of circulation of the tape being such that a ratio h/w is at least of 0.01. Related tape head apparatuses for recording or reproducing multi-track tapes are also provided.

8. 发明申请

US20160363625A1 SYMBOL TIMING RECOVERY SCHEME FOR PARALLEL RECORDING CHANNEL SYSTEMS 有权
标题翻译：并行记录通道系统的符号时序恢复方案
公开(公告)号：US20160363625A1
公开(公告)日：2016-12-15
申请号：US14985286
申请日：2015-12-30
申请人： International Business Machines Corporation
发明人： Simeon Furrer , Robert A. Hutchins , Jens Jelitto , Mark A. Lantz
IPC分类号： G01R31/319 , H04L25/05
CPC分类号： G11B20/10259 , G01R31/31922 , G11B5/00813 , G11B5/00826 , G11B5/02 , G11B5/29 , G11B5/584 , G11B20/10037 , G11B20/10046 , H04L25/05
摘要： A computer program product is provided for performing symbol timing recovery in a parallel recording channel system. The computer program product comprises a computer readable storage medium having program instructions embodied therewith. The program instructions are executable by a processor to cause the processor to receive a plurality of timing-error estimates for a plurality of read channels. Each of the timing-error estimates corresponds to one of the read channels. Also, the program instructions are executable by the processor to cause the processor to calculate a common phase based on the plurality of timing-error estimates. Moreover, the program instructions are executable by the processor to cause the processor to calculate a skew of a transducer array based on the plurality of timing-error estimates, and to calculate a different total phase estimate for each read channel based on the calculated common phase and the calculated skew of the transducer array.
摘要翻译：提供了一种用于在并行记录通道系统中执行符号定时恢复的计算机程序产品。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。程序指令可由处理器执行，以使处理器接收多个读取通道的多个定时误差估计。每个定时误差估计对应于一个读通道。此外，程序指令可由处理器执行，以使处理器基于多个定时误差估计来计算公共相位。此外，程序指令可由处理器执行以使处理器基于多个定时误差估计来计算换能器阵列的偏斜，并且基于所计算的公共相位来计算每个读取通道的不同总相位估计和计算出的换能器阵列的偏差。

9. 发明授权

US09502059B2 Hybrid tape head assembly and drive for accepting the same 有权
标题翻译：混合磁带头组件和驱动器接受相同
公开(公告)号：US09502059B2
公开(公告)日：2016-11-22
申请号：US14622726
申请日：2015-02-13
申请人： International Business Machines Corporation
发明人： Robert G. Biskeborn , Philipp Herget , Jason Liang
IPC分类号： G11B5/50 , G11B5/584 , G11B15/60 , G11B20/10 , G11B5/265 , G11B5/29
CPC分类号： G11B5/50 , G11B5/265 , G11B5/29 , G11B5/584 , G11B15/60 , G11B20/10009
摘要： A head assembly according to one embodiment includes at least one module having magnetic transducers for reading and/or writing to a magnetic tape; electronics electrically coupled to the transducers, the electronics comprising at least one of amplifiers; bias circuitry; write drivers; write resistors; a memory device; and a chip with at least one of identification information about the head assembly, customization data, and firmware; and a connector for detachably interfacing to a drive having a head region for receiving the head assembly. A method according to one embodiment includes inserting a head assembly in a head region of a magnetic tape drive, the head assembly having one or more modules containing a plurality magnetic transducers and one of amplifiers, write drives, or bias circuitry; wherein upon receiving the head assembly the drive is at least one of a functional drive, an updated drive, and a legacy drive.
摘要翻译：根据一个实施例的头组件包括至少一个具有用于读取和/或写入磁带的磁换能器的模块; 电耦合到换能器的电子器件，电子器件包括放大器中的至少一个; 偏置电路; 写驱动写电阻; 记忆装置; 以及具有关于头组件，定制数据和固件的识别信息中的至少一个的芯片; 以及用于可拆卸地连接到具有用于接收头部组件的头部区域的驱动器的连接器。根据一个实施例的方法包括将磁头组件插入磁带驱动器的磁头区域中，磁头组件具有一个或多个模块，其包含多个磁换能器和放大器，写驱动器或偏置电路中的一个; 其中在接收到所述头组件时，所述驱动器是功能驱动器，更新的驱动器和旧驱动器中的至少一个。

10. 发明授权

US09449620B2 Magnetic recording head having protected reader sensors and near zero recession writer poles 有权
标题翻译：磁记录头具有受保护的读取器传感器和近零衰退的写入极
公开(公告)号：US09449620B2
公开(公告)日：2016-09-20
申请号：US14703832
申请日：2015-05-04
申请人： International Business Machines Corporation
发明人： Robert G. Biskeborn , W. Stanley Czarnecki , Philipp Herget , Calvin S. Lo
IPC分类号： G11B5/255 , G11B5/29 , G11B5/48 , G11B5/40 , G11B5/31
CPC分类号： G11B5/255 , G11B5/00813 , G11B5/00821 , G11B5/187 , G11B5/29 , G11B5/295 , G11B5/3106 , G11B5/40 , G11B5/4893 , G11B5/84 , Y10T29/49021
摘要： An apparatus according to one embodiment includes a module having first and second transducers of different transducer types positioned towards a media facing side of the module, where the different transducer types are selected from a group consisting of data reader transducers, servo reader transducers, write transducers, piggyback read-write transducers and merged read-write transducers. The apparatus also includes a first protection structure for protecting the first transducer. The second transducer has either no protection or is protected by a second protection structure that is different than the first protection structure. In one embodiment, the first protection structure includes a coating on the media facing side of the module adjacent the first transducer. In another embodiment, the first protection structure is a recessed portion of the media facing side adjacent the first transducer.
摘要翻译：根据一个实施例的装置包括具有不同换能器类型的第一和第二换能器的模块，其朝向模块的面向介质的侧面定位，其中不同的换能器类型选自数据读取器换能器，伺服读取器换能器，写入换能器，背负读写传感器和合并读写传感器。该装置还包括用于保护第一换能器的第一保护结构。第二传感器不具有保护或被不同于第一保护结构的第二保护结构保护。在一个实施例中，第一保护结构包括在与第一换能器相邻的模块的面向介质的侧上的涂层。在另一个实施例中，第一保护结构是与第一换能器相邻的介质面向侧的凹陷部分。

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