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1. 发明授权

US11646054B2 Tape head design having an antiferromagnetic coupling (AFC) null shield for same gap verify 有权
公开(公告)号：US11646054B2
公开(公告)日：2023-05-09
申请号：US17396213
申请日：2021-08-06
申请人： Western Digital Technologies, Inc.
发明人： Quang Le , Xiaoyong Liu , Kuok San Ho , Hisashi Takano
IPC分类号： G11B5/48 , G11B5/265 , G11B5/29 , G11B5/008 , G11B5/23 , G11B5/39 , G11B5/11 , G11B5/592
CPC分类号： G11B5/3967 , G11B5/112 , G11B5/23 , G11B5/265 , G11B5/29 , G11B5/3958 , G11B5/4893 , G11B5/00813 , G11B5/11 , G11B5/2655 , G11B5/5926
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. Each pair comprises a null shield disposed between the write transducer and the read transducer. The null shield is used to create a null region, or a region where write flux goes to zero, and comprises laminated antiferromagnetic coupling materials to protect writer flux from going to the read transducer. The read transducer is disposed in the null region. 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.

2. 发明授权

US10839829B1 Magnetic head with a main pole including first and second layers and manufacturing method for the same 有权
公开(公告)号：US10839829B1
公开(公告)日：2020-11-17
申请号：US16585640
申请日：2019-09-27
申请人： Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Shigeki Tanemura , Tetsuya Roppongi , Kei Hirata , Atsushi Yamaguchi , Michitaka Nishiyama
发明人： Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Shigeki Tanemura , Tetsuya Roppongi , Kei Hirata , Atsushi Yamaguchi , Michitaka Nishiyama
IPC分类号： G11B5/127 , G11B5/31 , G11B5/66 , G11B5/39 , G11B5/265
CPC分类号： G11B5/3123 , G11B5/1278 , G11B5/265 , G11B5/3912 , G11B5/66
摘要： A magnetic head includes a medium facing surface, a coil, a main pole, and a substrate. The main pole includes a first layer, and a second layer lying on the first layer. The first layer includes a thickness-changing portion whose dimension in a direction perpendicular to a top surface of the substrate decreases with decreasing distance to the medium facing surface. At least part of the second layer is located on the thickness-changing portion.

3. 发明申请

US20180366147A1 BEAKED WRITE TRANSDUCER 审中-公开
公开(公告)号：US20180366147A1
公开(公告)日：2018-12-20
申请号：US16111094
申请日：2018-08-23
申请人： International Business Machines Corporation
发明人： Robert G. Biskeborn , Calvin S. Lo
IPC分类号： G11B5/31 , G11B5/265 , G11B5/147 , G11B5/29 , G11B5/008 , G11B5/23 , G11B5/187 , G11B5/39
CPC分类号： G11B5/3153 , G11B5/00813 , G11B5/00826 , G11B5/147 , G11B5/1871 , G11B5/23 , G11B5/265 , G11B5/2652 , G11B5/29 , G11B5/3116 , G11B5/3945 , G11B5/3967
摘要： An apparatus, according to one embodiment, includes: write transducers, each having: a first write pole having a pole tip, and a second write pole having a pole tip, the pole tips extending from a media facing side of the respective write pole. The pole tip of the second write pole is configured to emanate magnetic flux directly from the media facing side toward a magnetic medium. Each write transducer has a nonmagnetic write gap between the pole tips of the write poles, and a first high moment layer between the write gap and the pole tip of the second write pole. The first high moment layer has a higher magnetic moment than that of the pole tip of the second write pole. Moreover, the first high moment layer protrudes beyond a plane extending along a media facing side of the pole tips of the first and second write poles.

4. 发明授权

US09892751B1 Achieving fine motion between modules in a magnetic head 有权
公开(公告)号：US09892751B1
公开(公告)日：2018-02-13
申请号：US15336641
申请日：2016-10-27
申请人： International Business Machines Corporation
发明人： David H. F. Harper
IPC分类号： G11B5/584 , G11B5/265 , G11B5/29 , G11B5/008 , G11B5/48
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, and 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. The first module is movable relative to the second module. 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.

5. 发明授权

US09640205B1 Magnetic recording-reproducing head having different sections with different functions including an erase function 有权
公开(公告)号：US09640205B1
公开(公告)日：2017-05-02
申请号：US15066510
申请日：2016-03-10
申请人： TDK CORPORATION
发明人： Akimasa Kaizu , Kei Hirata , Yosuke Antoku
IPC分类号： G11B5/024 , G11B5/39 , G11B5/60 , G11B5/265
CPC分类号： G11B5/024 , G11B5/012 , G11B5/1278 , G11B5/265 , G11B5/3116 , G11B5/4886
摘要： A magnetic recording-reproducing head includes, on a support member, a first head section having a function of executing a recording process and having a function of executing a reproducing process, and one or more second head sections each having a function of executing an erasing process and having no function of executing a reproducing process.

6. 发明授权

US09514769B2 Method for writing a servo pattern to a magnetic tape medium with magnetically encoded servo band bursts 有权
标题翻译：将伺服模式写入具有磁编码伺服带阵列的磁带介质的方法
公开(公告)号：US09514769B2
公开(公告)日：2016-12-06
申请号：US14791668
申请日：2015-07-06
申请人： International Business Machines Corporation
发明人： Giovanni Cherubini , Johan B. C. Engelen , Simeon Furrer , Mark A. Lantz
IPC分类号： G11B5/265 , G11B5/17 , G11B15/087 , G11B5/584 , G11B5/78 , G11B5/008 , G11B20/12 , G11B5/592
CPC分类号： G11B20/1201 , G11B5/00813 , G11B5/00817 , G11B5/00826 , G11B5/17 , G11B5/265 , G11B5/584 , G11B5/5928 , G11B15/087 , G11B2220/956
摘要： A method for writing a servo pattern to a magnetic tape medium by a write head is described. The write head includes a coil configured to generate a magnetic flux when applying an electric current thereto, and a pole piece structure configured to guide the generated magnetic flux. The method includes moving the magnetic tape medium with its servo band above the two gaps in a direction along the longitudinal extension of the magnetic tape medium, applying a current pulse to the coil, continuing to move the magnetic tape medium, and applying another current pulse to the coil. The magnetic tape medium includes at least one servo band along the longitudinal extension of the tape medium having servo patterns organized in servo frames for supporting to determine positional information.
摘要翻译：描述了一种通过写头将伺服模式写入磁带介质的方法。写头包括被配置为在施加电流时产生磁通量的线圈，以及构造成引导所产生的磁通量的极片结构。该方法包括将磁带介质的两个间隙的磁带介质沿着磁带介质的纵向延伸方向移动到两个间隙之上，向线圈施加电流脉冲，继续移动磁带介质，并施加另一个电流脉冲到线圈。磁带介质包括沿着带介质的纵向延伸的至少一个伺服带，其具有组织在伺服框架中的伺服图案，用于确定位置信息。

7. 发明授权

US09361910B2 Leads coupled to top and bottom reader stacks of a reader 有权
标题翻译：引线耦合读取器的顶部和底部读取器堆叠
公开(公告)号：US09361910B2
公开(公告)日：2016-06-07
申请号：US14323119
申请日：2014-07-03
申请人： Seagate Technology LLC
发明人： Shaun Eric McKinlay , Eric Walter Singleton , Samuel Martin Barthell
IPC分类号： G11B5/39 , G11B5/115 , G11B5/29 , G11B5/265 , G11B5/11
CPC分类号： G11B5/115 , G11B5/11 , G11B5/265 , G11B5/2652 , G11B5/29 , G11B5/3909 , G11B5/3912 , G11B5/3948 , G11B5/3958 , G11B2005/3996
摘要： A reader includes top and bottom reader stacks that are offset relative to each other in a downtrack direction and disposed between a top shield and a bottom shield. Top side shields surround the top reader stack in a crosstrack direction, and bottom side shields surround the bottom reader stack in the crosstrack direction. A middle shield is between the top and bottom reader stacks and the top and bottom side shields. The middle shield includes a common electrical conductive path coupled to the top and bottom reader stacks. A middle lead is coupled to an edge of the middle shield.
摘要翻译：阅读器包括顶部和底部读取器堆叠，其在倾斜方向上相对于彼此偏移并且设置在顶部屏蔽和底部屏蔽之间。顶部屏蔽层以交叉方向围绕顶部读取器堆叠，并且底部侧屏蔽围绕底部读取器堆叠在横向方向上。中间的屏蔽是在顶部和底部读取器堆叠之间以及顶部和底部侧面屏蔽之间。中间屏蔽包括耦合到顶部和底部读取器堆叠的公共导电路径。中间导线连接到中间屏蔽的边缘。

8. 发明授权

US09099127B1 Dual magnetic sensor for multi-input magnetic recording 有权
标题翻译：双磁传感器，用于多输入磁记录
公开(公告)号：US09099127B1
公开(公告)日：2015-08-04
申请号：US14292749
申请日：2014-05-30
申请人： HGST Netherlands B. V.
发明人： Taku Shintani , Yohji Maruyama , Kouichi Nishioka , Masafumi Mochizuki
IPC分类号： G11B5/39 , G11B5/02
CPC分类号： G11B5/3945 , G11B5/02 , G11B5/265 , G11B5/3163 , G11B5/3954 , G11B5/3974 , G11B5/4886
摘要： A magnetic read head and associated circuitry for reducing side track noise and decreasing read width, thereby providing increased data density. The magnetic read head includes first and second sensor elements that are aligned with one another in a data track direction, with the first sensor element being wider than the second sensor element. Electrical circuitry is connected with the read head in such a manner as to read a first signal from the first sensor element and a second signal from a second sensor element. Because the second sensor element is wider than the first sensor element, it will read more side signal noise from adjacent data tracks than will the second sensor element. The circuitry connected with the first and second sensor element detects and distinguishes the side signal noise and separates it out from the data signal, based sensor width difference and location difference.
摘要翻译：磁读头和相关电路，用于减少侧轨噪声和减小读宽，从而提高数据密度。磁读头包括在数据轨道方向上彼此对准的第一和第二传感器元件，其中第一传感器元件比第二传感器元件宽。电路与读头连接，以便从第一传感器元件读取第一信号和从第二传感器元件读取第二信号。由于第二传感器元件比第一传感器元件更宽，因此它将从第二传感器元件读出相邻数据轨道的更多侧信号噪声。与第一和第二传感器元件连接的电路检测和区分侧信号噪声，并根据传感器宽度差和位置差将其与数据信号分离。

9. 发明申请

US20150155000A1 HYBRID TAPE HEAD ASSEMBLY AND DRIVE FOR ACCEPTING THE SAME 有权
标题翻译：混合胶带头组件和驱动装置
公开(公告)号：US20150155000A1
公开(公告)日：2015-06-04
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： G11B20/10 , G11B15/60 , G11B5/48
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

US09036296B2 Multiple writers with reduced crosstalk 有权
标题翻译：具有减少串扰的多个作者
公开(公告)号：US09036296B2
公开(公告)日：2015-05-19
申请号：US13869884
申请日：2013-04-24
申请人： International Business Machines Corporation
发明人： Robert G. Biskeborn , Philipp Herget
IPC分类号： G11B5/29 , G11B5/265
CPC分类号： G11B5/29 , G11B5/265
摘要： A system according to one embodiment includes at least two write transducers for writing to a magnetic medium; and a low reluctance path from a first pole of a first of the write transducers to a second pole of a second of the write transducers. In another embodiment, either 1) the first pole of the first write transducer and the second pole of the second write transducer are positioned close enough to each other that a low reluctance path is present from the first pole of the first write transducer to the second pole of the second write transducer, or 2) a magnetic strap extends between the first pole of the first write transducer and the second pole of the second write transducer thereby creating a low reluctance path therebetween.
摘要翻译：根据一个实施例的系统包括用于写入磁介质的至少两个写换能器; 以及从第一写入换能器的第一极到第二写入换能器的第二极的低磁阻路径。在另一个实施例中，1）第一写入传感器的第一极和第二写入换能器的第二极位置彼此足够接近，使得低磁阻路径从第一写入换能器的第一极点到第二个或2）磁带在第一写入传感器的第一极和第二写入换能器的第二极之间延伸，从而在它们之间产生低磁阻路径。

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