中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

50 records (took 0.013 seconds)

    Chirped current profile with undershoot feature
    2.
    发明授权
    Chirped current profile with undershoot feature 有权

    公开(公告)号：US09978401B1

    公开(公告)日：2018-05-22

    申请号：US15497473

    申请日：2017-04-26

    Applicant: SEAGATE TECHNOLOGY LLC

    Inventor： Kirill A. Rivkin ,  Mourad Benakli ,  Todd M. Lammers ,  Ralph William Cross

    IPC: G11B5/02 ,  G11B5/09 ,  G11B5/012 ,  G11B20/10

    CPC classification number: G11B5/09 ,  G11B5/012 ,  G11B20/10009 ,  G11B20/10018

    Abstract: Systems and methods for a providing a chirped current profile with an undershoot for a channel preamplifier are described. A method for writing bits in a magnetic recording disc may include applying an overshoot to a write current which is supplied to a magnetic writer of the magnetic recording disc and applying an undershoot to the write current after the overshoot is applied to at least partially de-saturate the magnetic writer. The method may also include writing a bit to the magnetic recording disc with the magnetic writer using the supplied write current. In some examples, the application of a short negative pulse after an overshoot portion of the write current waveform is delivered to the head during a write operation that writes the bit to the magnetic recording disc.

    Low-recess write pole coil near shield at media-facing surface
    3.
    发明授权
    Low-recess write pole coil near shield at media-facing surface 有权
    低介质写磁极线圈靠近屏蔽在面向介质的表面

    公开(公告)号：US08873201B2

    公开(公告)日：2014-10-28

    申请号：US13961672

    申请日：2013-08-07

    Applicant: Seagate Technology LLC

    Inventor： Mourad Benakli ,  Kirill Aleksandrovich Rivkin ,  Zhe Shen ,  Jiaoming Qiu ,  Huaqing Yin

    IPC: G11B5/11 ,  G11B5/012 ,  G11B5/31 ,  G11B5/09

    CPC classification number: G11B5/11 ,  G11B5/012 ,  G11B5/09 ,  G11B5/312 ,  G11B5/315

    Abstract: An apparatus includes a write pole magnetically coupled to write coils that generate a first magnetic field during a switching event. The apparatus includes a shield at a media-facing surface and proximate the write pole. A conductive element is disposed proximate the shield and configured to generate a second magnetic field opposite to the first magnetic field during the switching event. A selected one of the write coils is located adjacent the shield separate from others of the write coils.

    Abstract translation: 一种装置包括磁极耦合到写入线圈的写入磁极，其在切换事件期间产生第一磁场。 该装置包括位于面向媒体的表面并靠近写入极的屏蔽。 导电元件靠近屏蔽设置，并被配置为在切换事件期间产生与第一磁场相反的第二磁场。 写入线圈中的一个选择的一个写入线圈与写入线圈的其他部分分开设置在屏蔽件附近。

    Shield with continuously and throat regions adjacent a main pole
    4.
    发明授权
    Shield with continuously and throat regions adjacent a main pole 有权
    护罩与嘴和喉区相邻的主杆

    公开(公告)号：US08675307B2

    公开(公告)日：2014-03-18

    申请号：US13690705

    申请日：2012-11-30

    Applicant: Seagate Technology LLC

    Inventor： Kaizhong Gao ,  Mourad Benakli

    IPC: G11B5/31

    CPC classification number: G11B5/127 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315

    Abstract: A write element for magnetic recording includes a main pole and a shield. The main pole has first and second sides with respect to a down-track direction. The shield at least partially surrounds the main pole with a continuously concave inner sidewall. The angle between the inner sidewall of the shield and the direction of motion of the write element is greater than the angle between the sides of the main pole and the direction of motion.

    Abstract translation: 用于磁记录的写入元件包括主极和屏蔽。 主杆相对于下轨方向具有第一和第二侧。 屏蔽件至少部分地围绕主极具有连续凹入的内侧壁。 屏蔽件的内侧壁与写入元件的运动方向之间的角度大于主极的侧面与运动方向之间的角度。

    WRITE HEAD WITH MODIFIED SIDE SHIELDS
    5.
    发明申请
    WRITE HEAD WITH MODIFIED SIDE SHIELDS 有权
    具有修改的边框的写头

    公开(公告)号：US20140022673A1

    公开(公告)日：2014-01-23

    申请号：US13890387

    申请日：2013-05-09

    Applicant: SEAGATE TECHNOLOGY LLC

    Inventor： Mourad Benakli ,  Kirill Aleksandrovich Rivkin ,  James Gary Wessel ,  Dehua Han ,  Huaqing Yin ,  Jianhua Xue

    IPC: G11B5/11

    CPC classification number: G11B5/11 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/6082

    Abstract: A write head, the write head having an air bearing surface, the write head including a magnetic write pole, wherein at the air bearing surface, the write pole has a trailing surface, a leading surface that is opposite the trailing surface, and first and second surfaces; a trailing shield proximate the trailing surface of the magnetic write pole; first and second gaps proximate the first and second surfaces of the magnetic write pole; first and second side shields proximate the first and second gaps, each of the first and second side shields having a trailing shield surface; and first and second antiferromagnetic-coupling layers positioned between the trailing shield surfaces of the first and second side shields and the trailing shield.

    Abstract translation: 写头，写头具有空气轴承表面，写头包括磁写极，其中在空气轴承表面处，写极具有后表面，与后表面相对的前表面，以及第一和 第二面 靠近磁性写入磁极的后表面的尾部屏蔽; 靠近磁写入极的第一和第二表面的第一和第二间隙; 靠近第一和第二间隙的第一和第二侧面屏蔽件，第一和第二侧面屏蔽件中的每一个具有尾部屏蔽表面; 以及第一和第二反铁磁耦合层，其位于第一和第二侧面屏蔽的尾部屏蔽表面与后屏蔽之间。

    Chirped current profile with undershoot feature
    7.
    发明授权
    Chirped current profile with undershoot feature 有权

    公开(公告)号：US10210887B1

    公开(公告)日：2019-02-19

    申请号：US15956901

    申请日：2018-04-19

    Applicant: SEAGATE TECHNOLOGY LLC

    Inventor： Kirill A. Rivkin ,  Mourad Benakli ,  Todd M. Lammers ,  Ralph William Cross

    IPC: G11B5/09 ,  G11B5/012 ,  G11B20/10

    Abstract: Systems and methods for a providing a chirped current profile with an undershoot for a channel preamplifier are described. A method for writing bits in a magnetic recording disc may include applying an overshoot to a write current which is supplied to a magnetic writer of the magnetic recording disc and applying an undershoot to the write current after the overshoot is applied to at least partially de-saturate the magnetic writer. The method may also include writing a bit to the magnetic recording disc with the magnetic writer using the supplied write current. In some examples, the application of a short negative pulse after an overshoot portion of the write current waveform is delivered to the head during a write operation that writes the bit to the magnetic recording disc.

    WRITE HEAD CORE
    9.
    发明申请
    WRITE HEAD CORE 有权
    写头核心

    公开(公告)号：US20160118064A1

    公开(公告)日：2016-04-28

    申请号：US14981470

    申请日：2015-12-28

    Applicant: Seagate Technology LLC

    Inventor： Kirill Rivkin ,  Ned Tabat ,  Mourad Benakli ,  Michael A. Seigler

    IPC: G11B5/127

    CPC classification number: G11B5/1272 ,  G11B5/3116 ,  G11B5/312 ,  G11B5/3163 ,  G11B2005/0021 ,  Y10T29/49048

    Abstract: Implementations disclosed and claimed herein include a method of write head core located in a slider, the write head core comprising a first end operative to serve as a write pole, a second end operative to serve as a return pole, wherein the first end comprises a substantially smaller cross-sectional area than the second end, and wherein the write head core has a substantially smooth curvature.

    Abstract translation: 本文公开和要求保护的实施方式包括位于滑块中的写头芯的方法，所述写头芯包括可操作以用作写极的第一端，可操作以用作返回极的第二端，其中所述第一端包括 比第二端小得多的横截面面积，并且其中写头芯具有基本平滑的曲率。

    HEAT ASSISTED MEDIA RECORDING DEVICE WITH REDUCED LIKELIHOOD OF LASER MODE HOPPING
    10.
    发明申请
    HEAT ASSISTED MEDIA RECORDING DEVICE WITH REDUCED LIKELIHOOD OF LASER MODE HOPPING 有权
    加热辅助介质记录装置，具有减少激光模式偏差

    公开(公告)号：US20160087401A1

    公开(公告)日：2016-03-24

    申请号：US14492785

    申请日：2014-09-22

    Applicant: Seagate Technology LLC

    Inventor： James Gary Wessel ,  Karim Tatah ,  Mourad Benakli

    IPC: H01S5/068 ,  H01S5/026 ,  H01S5/065 ,  H01S5/06

    CPC classification number: H01S5/06804 ,  G11B5/02 ,  G11B5/40 ,  G11B19/046 ,  G11B2005/0021 ,  H01S5/02453 ,  H01S5/0261 ,  H01S5/06216 ,  H01S5/0687

    Abstract: An apparatus includes a laser diode, a heater arrangement, and a circuit. The laser diode is configured to facilitate heat assisted magnetic recording during a lasing state. The heater arrangement is positioned proximate the laser diode. The circuit electrically couples the laser diode and the heater arrangement in a parallel relationship. The circuit is configured to alternately operate the laser diode in a lasing state and a non-lasing state, and to activate the heater arrangement during the non-lasing state to warm a junction of the laser diode.

    Abstract translation: 一种装置包括激光二极管，加热器装置和电路。 激光二极管被配置为在激光状态期间促进热辅助磁记录。 加热器装置位于激光二极管附近。 电路以平行关系电耦合激光二极管和加热器装置。 电路被配置为交替地操作激光二极管处于激光状态和非激光状态，并且在非激光状态期间激活加热器装置以加热激光二极管的结。

Patent Agency Ranking