中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

26 records (took 0.027 seconds)

    BIMODAL MODULATION
    1.
    发明申请
    BIMODAL MODULATION 有权

    公开(公告)号：US20180130493A1

    公开(公告)日：2018-05-10

    申请号：US15694387

    申请日：2017-09-01

    Applicant: Seagate Technology, LLC

    Inventor： Vijay Kumar ,  Narayanan Ramakrishnan

    IPC: G11B20/10 ,  G11B5/48 ,  G11B5/55

    CPC classification number: G11B20/10268 ,  G11B5/4826 ,  G11B5/483 ,  G11B5/5552 ,  G11B5/5573

    Abstract: Apparatus and method contemplating an in-situ test method for a head gimbal assembly (HGA). The method includes individually exciting a pair of opposing-effect microactuators supporting the read/write head adjacent a data storage media; summing the outputs from the microactuators to derive a spectral frequency response of the HGA; determining a resonant frequency from the spectral frequency response; driving the microactuators at the resonant frequency; and varying the read/write fly height apart from the data storage media to correlate contact with a maximum response of the microactuators.

    BIMODAL MODULATION
    2.
    发明申请
    BIMODAL MODULATION 有权
    双模调制

    公开(公告)号：US20160217821A1

    公开(公告)日：2016-07-28

    申请号：US15012571

    申请日：2016-02-01

    Applicant: SEAGATE TECHNOLOGY LLC

    Inventor： Vijay Kumar ,  Narayanan Ramakrishnan

    IPC: G11B20/10 ,  G11B5/48

    CPC classification number: G11B20/10268 ,  G11B5/4826 ,  G11B5/483 ,  G11B5/5552 ,  G11B5/5573

    Abstract: An apparatus and associated method contemplating a head gimbal assembly (HGA) and a bridge circuit including first and second microactuators attached to the HGA. Computation logic is connected to the bridge circuit and configured to independently measure an electrical output of each microactuator and to sum the electrical outputs to derive a value related to a vertically dominant modulation mode of the HGA.

    Abstract translation: 一种考虑头部万向节组件（HGA）的装置和相关方法以及包括连接到HGA的第一和第二微致动器的桥接电路。 计算逻辑连接到桥式电路，并被配置为独立地测量每个微型致动器的电输出，并且对电气输出求和以得到与HGA的垂直主导调制模式相关的值。

    Bimodal modulation
    3.
    发明授权
    Bimodal modulation 有权

    公开(公告)号：US10014027B2

    公开(公告)日：2018-07-03

    申请号：US15694387

    申请日：2017-09-01

    Applicant: Seagate Technology, LLC

    Inventor： Vijay Kumar ,  Narayanan Ramakrishnan

    IPC: G11B21/02 ,  G11B20/10 ,  G11B5/48 ,  G11B5/55

    CPC classification number: G11B20/10268 ,  G11B5/4826 ,  G11B5/483 ,  G11B5/5552 ,  G11B5/5573

    Abstract: Apparatus and method contemplating an in-situ test method for a head gimbal assembly (HGA). The method includes individually exciting a pair of opposing-effect microactuators supporting the read/write head adjacent a data storage media; summing the outputs from the microactuators to derive a spectral frequency response of the HGA; determining a resonant frequency from the spectral frequency response; driving the microactuators at the resonant frequency; and varying the read/write fly height apart from the data storage media to correlate contact with a maximum response of the microactuators.

    Bond pad sharing for powering multiple writers of a recording head
    6.
    发明授权
    Bond pad sharing for powering multiple writers of a recording head 有权

    公开(公告)号：US09607641B1

    公开(公告)日：2017-03-28

    申请号：US15007756

    申请日：2016-01-27

    Applicant: Seagate Technology LLC

    Inventor： Narayanan Ramakrishnan ,  Declan Macken

    IPC: G11B11/00 ,  G11B5/60 ,  G11B5/00

    CPC classification number: G11B5/4853 ,  G11B5/607 ,  G11B2005/0021

    Abstract: A slider of a magnetic recording head comprises a plurality of electrical bond pads coupled to bias sources. A first writer on the slider is coupled between first and second bond pads. A second writer on the slider is coupled between third and fourth bond pads. At least one heater is coupled between two of the first, second, third, and fourth bond pads. The first writer can have a center-tap coupled to first and second bond pads. The second writer can have a center-tap coupled to third and fourth bond pads. A first writer heater can be coupled between the center-tap of the second writer and the ground pad. A second writer heater can be coupled between the center-tap of the first writer and the ground pad.

    SLIDERS HAVING AT LEAST TWO REGIONS ON THE TRAILING EDGE SURFACE
    8.
    发明申请
    SLIDERS HAVING AT LEAST TWO REGIONS ON THE TRAILING EDGE SURFACE 审中-公开
    在最近两个地区的拖车边缘边缘表面

    公开(公告)号：US20170032809A1

    公开(公告)日：2017-02-02

    申请号：US15268957

    申请日：2016-09-19

    Applicant: SEAGATE TECHNOLOGY LLC

    Inventor： Ajaykumar Rajasekharan ,  Gary Kunkel ,  David J. Ellison ,  Narayanan Ramakrishnan

    IPC: G11B5/48 ,  G11B5/60

    CPC classification number: G11B5/4813 ,  G11B5/6082

    Abstract: A slider that includes a leading edge surface; a trailing edge surface; and an air bearing surface (ABS) positioned between the leading edge surface and the trailing edge surface, wherein the trailing edge surface includes a read-write element, at least one low surface energy region and at least one high surface energy region.

    Abstract translation: 包括前缘表面的滑块; 后缘表面; 以及位于前缘表面和后缘表面之间的空气轴承表面（ABS），其中后缘表面包括读写元件，至少一个低表面能区域和至少一个高表面能区域。

    SLIDER INCLUDING ONE OR MORE FLUID PATHWAYS, AND RELATED APPARATUSES AND METHODS
    10.
    发明申请
    SLIDER INCLUDING ONE OR MORE FLUID PATHWAYS, AND RELATED APPARATUSES AND METHODS 有权
    滑动器包括一个或多个流体路径，以及相关装置和方法

    公开(公告)号：US20150179200A1

    公开(公告)日：2015-06-25

    申请号：US14139438

    申请日：2013-12-23

    Applicant: Seagate Technology LLC

    Inventor： Narayanan Ramakrishnan ,  Ajaykumar Rajasekharan

    IPC: G11B5/60

    CPC classification number: G11B5/6082 ,  G11B5/10 ,  G11B5/3106 ,  G11B5/6005

    Abstract: The present invention is directed to a slider that includes at least one fluid pathway that is in fluid communication with an air bearing face and/or the trailing edge face of the slider. The at least one fluid pathway is configured to propel/transport a fluid such as a lubricant toward at least one side face via capillary action. The present invention is also directed to related apparatuses and methods.

    Abstract translation: 本发明涉及一种滑块，其包括与滑动件的空气轴承面和/或后缘面流体连通的至少一个流体通路。 所述至少一个流体通道经配置以通过毛细作用推动/输送诸如润滑剂的流体朝向至少一个侧面。 本发明还涉及相关的装置和方法。

Patent Agency Ranking