公开(公告)号：US09042058B1

公开(公告)日：2015-05-26

申请号：US14097157

申请日：2013-12-04

Applicant: Western Digital Technologies, Inc.

Inventor： Shaoping Li ,  Gerardo A. Bertero ,  Michael L. Mallary ,  Guanxiong Li

IPC: G11B5/39 ,  G11B5/60 ,  G11B5/29

CPC classification number: G11B5/3912 ,  G11B5/3909 ,  G11B5/3932 ,  G11B5/3951 ,  G11B5/3961 ,  G11B5/397 ,  G11B2005/3996

Abstract: A method and system provide a magnetic transducer having an air-bearing surface (ABS). The method provides a first read sensor stack and defines a first read sensor in a stripe height direction from the first read sensor stack. The stripe height direction is perpendicular to the ABS. A shield is provided on the first read sensor stack and in a down track direction from the first read sensor stack. A second read sensor stack is provided. The shield is between the first read sensor and the second read sensor stack in the down track direction. Both the first read sensor and the second read sensor are defined from the first read sensor stack and from the second read sensor stack, respectively, in a cross-track direction. The cross-track direction is substantially perpendicular to the down track direction and substantially perpendicular to the stripe height direction.

Abstract translation: 一种方法和系统提供具有空气轴承表面（ABS）的磁换能器。 该方法提供了第一读取传感器堆栈并且定义了来自第一读取传感器堆叠的条带高度方向上的第一读取传感器。 条纹高度方向垂直于ABS。 在第一读取传感器堆叠上并且沿着从第一读取传感器堆叠的下行轨道方向设置屏蔽。 提供了第二个读取传感器堆栈。 屏蔽在下行轨道方向上位于第一读取传感器和第二读取传感器堆叠之间。 第一读取传感器和第二读取传感器分别从第一读取传感器堆叠和第二读取传感器堆栈在交叉轨道方向上定义。 交叉轨道方向基本上垂直于向下轨道方向并且基本上垂直于条带高度方向。

公开(公告)号：US09245556B2

公开(公告)日：2016-01-26

申请号：US14203358

申请日：2014-03-10

Applicant: Western Digital Technologies, Inc.

Inventor： Donald Brunnett ,  Gerardo A. Bertero ,  Shaoping Li

IPC: G11B21/02 ,  G11B5/49

CPC classification number: G11B5/4969 ,  G11B5/012 ,  G11B5/4886 ,  G11B5/4976 ,  G11B5/5539

Abstract: A disk drive is disclosed comprising a disk comprising a plurality of tracks, and a head comprising at least three read elements including a first read element, a second read element, and a third read element. When the head is within a first radial band of the disk, data recorded on the disk is detected using the first read element and the second read element. When the head is within a second radial band of the disk different from the first radial band, data recorded on the disk is detected using the first read element and the third read element. The first read element is substantially aligned down-track with the third read element when the head is over a first radial location of the disk.

Abstract translation: 公开了一种磁盘驱动器，包括包括多个磁道的磁盘，以及包括至少三个读取元件的磁头，包括第一读取元件，第二读取元件和第三读取元件。 当磁头位于磁盘的第一径向带内时，使用第一读取元件和第二读取元件检测记录在磁盘上的数据。 当磁头位于不同于第一径向磁带的盘的第二径向带内时，使用第一读取元件和第三读取元件检测记录在盘上的数据。 当磁头位于磁盘的第一径向位置时，第一读取元件与第三读取元件基本上对准。

公开(公告)号：US09135935B1

公开(公告)日：2015-09-15

申请号：US14099849

申请日：2013-12-06

Applicant: Western Digital Technologies, Inc.

Inventor： Michael L. Mallary ,  Gerardo A. Bertero ,  Shaoping Li

IPC: G11B21/21 ,  G11B5/48 ,  G11B5/60

CPC classification number: G11B5/4826 ,  G11B5/4886 ,  Y10T29/49028 ,  Y10T29/4903

Abstract: System and methods are illustrated for customizing the HGA bonding skew angle of a TDMR slider including a plurality of readers to adjust reader alignment relative to a track location on disk media. Overlay error caused by manufacturing variations is compensated for by adjusting the skew angle of the slider when it is bonded to the suspension to form the HGA. Process operations for manufacturing a TMDR HDD include manufacturing a multiple reader, multiple layer TDMR slider, determining an overlay error in the slider, determining a slider bonding skew angle based on the determined overlay error and other parameters, and bonding the slider to a HDD suspension at the determined bonding skew angle.

Abstract translation: 示出了系统和方法，用于定制包括多个读取器的TDMR滑块的HGA绑定偏斜角度，以相对于磁盘介质上的轨道位置来调整读取器对准。 通过调整滑块在与悬浮液结合形成HGA时的倾斜角度来补偿由制造变化引起的叠加误差。 用于制造TMDR HDD的处理操作包括制造多个读取器，多层TDMR滑块，确定滑块中的重叠错误，基于所确定的重叠错误和其他参数来确定滑块粘合倾斜角度，以及将滑块结合到HDD悬架 以确定的接合倾斜角度。

公开(公告)号：US09070406B1

公开(公告)日：2015-06-30

申请号：US14304347

申请日：2014-06-13

Applicant: Western Digital Technologies, Inc.

Inventor： Shaoping Li ,  Gerardo A. Bertero ,  Donald Brunnett

IPC: G11B5/02 ,  G11B20/10

CPC classification number: G11B20/10268

Abstract: A disk drive is disclosed comprising a disk comprising a plurality of tracks, and a head comprising a first read element and a second read element. A spacing of the first and second read elements is measured, and based on the measured spacing, the tracks are grouped into radial bands that define at least one one-dimensional recording area on the disk and at least one two-dimensional recording area on the disk. When the head is within a first two-dimensional recording area, data recorded on the disk is detected by processing a first read signal generated by the first read element and by processing a second read signal generated by the second read element using a two-dimensional demodulation algorithm. When the head is within a first one-dimensional recording area, data recorded on the disk is detected by processing the first read signal using a one-dimensional demodulation algorithm.

Abstract translation: 公开了一种磁盘驱动器，其包括包括多个磁道的磁盘，以及包括第一读取元件和第二读取元件的磁头。 测量第一和第二读取元件的间隔，并且基于所测量的间隔，轨道被分组成径向带，其限定盘上的至少一个一维记录区域和至少一个二维记录区域 磁盘。 当头部在第一二维记录区域内时，通过处理由第一读取元件产生的第一读取信号并且通过处理由第二读取元件产生的第二读取信号来检测记录在盘上的数据，其中使用二维 解调算法。 当头部在第一个一维记录区域内时，通过使用一维解调算法处理第一读取信号来检测记录在盘上的数据。