公开(公告)号：US07746596B2

公开(公告)日：2010-06-29

申请号：US11619330

申请日：2007-01-03

Applicant: John P. Nibarger ,  Edward V. Denison

Inventor： John P. Nibarger ,  Edward V. Denison

IPC: G11B5/584 ,  G11B5/29 ,  G11B5/265 ,  G11B5/187

CPC classification number: G11B5/588 ,  G11B5/584

Abstract: A linear tape drive system includes a tape having a path direction, a data track having data transitions at an azimuthal orientation relative to the path direction, and a servo track having servo positioning transitions. A linear tape drive module is configured to read and/or write to the data track at the azimuthal orientation and read the servo positioning transitions.

Abstract translation: 线性磁带驱动系统包括具有路径方向的磁带，具有相对于路径方向的方位取向的数据转换的数据磁道以及具有伺服定位转换的伺服磁道。 线性磁带驱动器模块被配置为以方位取向读取和/或写入数据磁道并读取伺服定位转换。

公开(公告)号：US07495871B1

公开(公告)日：2009-02-24

申请号：US11190040

申请日：2005-07-26

Applicant: John P. Nibarger ,  Edward V. Denison ,  Carl Anthony Helms ,  Carl Stephen Arnold

Inventor： John P. Nibarger ,  Edward V. Denison ,  Carl Anthony Helms ,  Carl Stephen Arnold

IPC: G11B5/127

CPC classification number: G11B5/398 ,  B82Y25/00 ,  G01R33/093 ,  G01R33/096 ,  G11B5/3932 ,  H01L43/08 ,  H01L43/12

Abstract: A magneto-resistive sensor head and a method of manufacturing the magneto-resistive sensor head. The magneto-resistive sensor head includes a first lead and a second lead. A magneto-resistive layer and a biasing layer are disposed between the first lead and the second lead. A grating is disposed in the magneto-resistive layer. The topography of the biasing layer is unaffected by the presence of the grating.

Abstract translation: 磁阻式传感器头及其制造方法。 磁阻传感器头包括第一引线和第二引线。 磁阻层和偏置层设置在第一引线和第二引线之间。 光栅设置在磁阻层中。 偏置层的形貌不受光栅的存在的影响。

公开(公告)号：US20080158719A1

公开(公告)日：2008-07-03

申请号：US11619330

申请日：2007-01-03

Applicant: John P. Nibarger ,  Edward V. Denison

Inventor： John P. Nibarger ,  Edward V. Denison

IPC: G11B5/584

CPC classification number: G11B5/588 ,  G11B5/584

Abstract: A linear tape drive system includes a tape having a path direction, a data track having data transitions at an azimuthal orientation relative to the path direction, and a servo track having servo positioning transitions. A linear tape drive module is configured to read and/or write to the data track at the azimuthal orientation and read the servo positioning transitions.

Abstract translation: 线性磁带驱动系统包括具有路径方向的磁带，具有相对于路径方向的方位取向的数据转换的数据磁道以及具有伺服定位转换的伺服磁道。 线性磁带驱动器模块被配置为以方位取向读取和/或写入数据磁道并读取伺服定位转换。

公开(公告)号：US5539598A

公开(公告)日：1996-07-23

申请号：US354753

申请日：1994-12-08

Applicant: Edward V. Denison ,  Vincent N. Kahwaty ,  Antonio Rubio ,  Joseph M. Schmalhorst

Inventor： Edward V. Denison ,  Vincent N. Kahwaty ,  Antonio Rubio ,  Joseph M. Schmalhorst

IPC: G11B5/11 ,  G11B5/39 ,  G11B5/40 ,  G11B5/31

CPC classification number: G11B5/3903 ,  G11B5/00826 ,  G11B5/11 ,  G11B5/40

Abstract: A magneto-resistive (MR) head includes protection from electrostatic discharge without introducing additional processing steps. The MR sensor comprises a soft film biased (SFB) magnetic read sensor sandwiched between two high resistivity magnetic materials. The MR sensor is located between two MR shields wherein each MR shield is connected to an MR sensor ground signal lead by a resistor. The resistor is constructed from the high resistivity magnetic material such that the resistor is deposited at the same process step as the MR sensor.

Abstract translation: 磁阻（MR）磁头包括防止静电放电而不引入额外的处理步骤。 MR传感器包括夹在两个高电阻率磁性材料之间的软膜偏置（SFB）磁读取传感器。 MR传感器位于两个MR屏蔽之间，其中每个MR屏蔽件通过电阻器连接到MR传感器接地信号引线。 电阻器由高电阻率磁性材料构成，使得电阻器以与MR传感器相同的工艺步骤沉积。

公开(公告)号：US5142768A

公开(公告)日：1992-09-01

申请号：US694611

申请日：1991-05-02

Applicant: Joseph A. Aboaf ,  Edward V. Denison ,  Vincent N. Kahwaty ,  Gerald Steving

Inventor： Joseph A. Aboaf ,  Edward V. Denison ,  Vincent N. Kahwaty ,  Gerald Steving

IPC: G11B5/31 ,  G11B5/39

CPC classification number: G11B5/3106 ,  G11B5/313 ,  G11B5/3143 ,  Y10T29/49041 ,  Y10T29/49044

Abstract: An interleaved bi-directional magentic tape head for contact recording can have a poletip enhanced by providing a thin film of a soft magnetic material deposited onto a magnetic ferrite substrate. The second pole piece is a thin film of the soft magnetic material. A closure block of a non-magnetic ceramic encloses the layers together with leveling insulation layers and a deposited activating conductor turns. The stripe poletip deposited onto the magnetic ferrite extends for a distance just short of the first conductor turn and provides a balancing of the saturation moment of the pole pieces and provides for better recording capability, especially when operating in a trailing magnetic ferrite mode.

公开(公告)号：US5208714A

公开(公告)日：1993-05-04

申请号：US916354

申请日：1992-07-20

Applicant: Edward V. Denison ,  Vincent N. Kahwaty ,  Gustave C. Stern ,  Gerald Steving ,  Robert P. Zammit

Inventor： Edward V. Denison ,  Vincent N. Kahwaty ,  Gustave C. Stern ,  Gerald Steving ,  Robert P. Zammit

IPC: G11B5/245 ,  G11B5/31 ,  G11B5/39 ,  G11B5/48

CPC classification number: G11B5/3903 ,  G11B5/3103 ,  G11B5/3967 ,  G11B5/4893 ,  G11B5/245 ,  G11B5/3133 ,  G11B5/3146

Abstract: An interleaved head for reading and writing data transitions onto a magnetic tape. A magnetic recording system for the bi-directional transportation of the tape media across the interleaved head. A controller controls the tape drive in a reel-to-reel format to accomplish the bi-directional motion of the tape media. The interleaved head includes two modules with each module having a plurality of alternating read and write transducers alternately spaced apart along a single line placed transverse to the movement of the magnetic tape. The two modules are placed together such that the write gaps of one module are aligned with the read gaps of the other module. Each read module includes the magneto-resistive element. Each write transducer includes a thin film conductor driving a nickel zinc ferrite substrate as one pole piece and a nickel zinc closure piece as the second pole piece. In order to provide leveling across the write transducers of the module, write back gap islands are provided in the back gap regions of the write transducer made of the same material with the same thickness as the magneto resistive element and the conductors interconnecting the magneto resistive element to the read/write network of the tape drive.

Abstract translation: 用于将数据转换读取和写入磁带的交错磁头。 一种磁记录系统，用于将带介质跨过交织的头部进行双向传输。 控制器以卷到盘格式控制磁带机，以实现磁带介质的双向运动。 交错的头部包括两个模块，每个模块具有多个交替的读取和写入传感器，沿着横向于磁带的运动放置的单个线交替间隔开。 将两个模块放置在一起，使得一个模块的写入间隙与另一个模块的读取间隙对齐。 每个读取模块包括磁阻元件。 每个写入传感器包括驱动作为一个极片的镍锌铁氧体衬底和作为第二极片的镍锌封闭件的薄膜导体。 为了在模块的写换能器之间提供调平，在由与磁阻元件相同厚度的相同材料制成的写换能器的后间隙区域中提供写回间隙岛，并且将磁阻元件 到磁带驱动器的读/写网络。

公开(公告)号：US07079359B1

公开(公告)日：2006-07-18

申请号：US11209119

申请日：2005-08-22

Applicant: Jing He ,  Joseph M. Schmalhorst ,  Carl A. Helms ,  Edward V. Denison

Inventor： Jing He ,  Joseph M. Schmalhorst ,  Carl A. Helms ,  Edward V. Denison

IPC: G11B5/33

CPC classification number: G11B5/3951 ,  G11B2005/0018

Abstract: A head includes first and second read modules. The first module has an MR element formed on a wafer having a grating directed along a first direction. The magnetization of the first module element is directed along the first direction. The first module element is biased with a first current directed along a direction such that magnetically stable operation of the element results, that is along an opposite second direction. The second module has an element formed on a wafer having a grating directed along the first direction. The second module is flipped respect to the first module such that the grating is directed along the second direction. The magnetization of the second module element is directed along the second direction. The second module element is biased with a second current directed along the direction opposite to the first current, i.e., the second current is directed along the first direction.

Abstract translation: 头包括第一和第二读取模块。 第一模块具有形成在具有沿着第一方向指向的光栅的晶片上的MR元件。 第一模块元件的磁化沿着第一方向被引导。 第一模块元件被沿着沿着方向引导的第一电流偏置，使得元件的磁稳定操作导致沿相反的第二方向。 第二模块具有形成在具有沿第一方向指向的光栅的晶片上的元件。 第二模块相对于第一模块翻转，使得光栅沿着第二方向被引导。 第二模块元件的磁化沿着第二方向被引导。 第二模块元件被沿着与第一电流相反的方向引导的第二电流偏置，即第二电流沿着第一方向被引导。

公开(公告)号：US5530608A

公开(公告)日：1996-06-25

申请号：US447395

申请日：1995-05-23

Applicant: Joseph A. Aboaf ,  Edward V. Denison ,  Vincent N. Kahwaty

Inventor： Joseph A. Aboaf ,  Edward V. Denison ,  Vincent N. Kahwaty

IPC: G11B5/39 ,  G11B5/008 ,  G11B5/31 ,  G11B5/48 ,  G11B5/55 ,  G11B5/58 ,  G11B5/584 ,  G11B5/596 ,  G11B25/06 ,  G11B5/33

CPC classification number: G11B5/00813 ,  G11B5/3113 ,  G11B5/3903 ,  G11B5/3932 ,  G11B5/3961 ,  G11B5/399 ,  G11B5/488 ,  G11B5/4893 ,  G11B5/58 ,  G11B5/584 ,  G11B5/59683 ,  G11B5/3163 ,  G11B5/5508 ,  Y10T29/49034 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49067

Abstract: A magnetoresistive sensor design and fabrication process that provides improved microtrack profile linearity for servo elements while simultaneously providing stable and linear data sensing elements suitable for high density tape head applications. The stability and uniformity of both data and servo sensor elements is enhanced through the use of a grating profile under both the soft film biased magnetoresistive sensor layer and the hard bias stabilizing magnets. Processing steps are eliminated by replicating the grating pattern for the servo sensor elements through a thick layer of alumina or silicon dioxide. The outer read shield is removed from the servo elements using a stripping process that eliminates structural damage arising from alumina pinholes. Both element types are free of significant Barkhausen noise and instability because of the grating-stabilized domains in both the active magnetoresistive regions and the passive hard-biasing regions of each sensor. Each servo sensor is disposed at a greater distance from the single shield to optimize the microtrack profile. The resulting reduction in servo sensor frequency response leaves sufficient bandwidth for precise servo positioning.

Abstract translation: 磁阻传感器设计和制造过程，为伺服元件提供改进的微轨迹轮廓线，同时提供适用于高密度磁带头应用的稳定和线性数据传感元件。 通过在软膜偏置磁阻传感器层和硬偏置稳定磁体两者下使用光栅轮廓来增强数据和伺服传感器元件的稳定性和均匀性。 通过将氧化铝或二氧化硅的厚层复制用于伺服传感器元件的光栅图案来消除加工步骤。 使用消除氧化铝针孔造成的结构损坏的剥离过程，从伺服元件中除去外部读取屏蔽层。 由于在每个传感器的有源磁阻区域和被动硬偏置区域中的光栅稳定域，这两种元件类型都没有显着的Barkhausen噪声和不稳定性。 每个伺服传感器设置在与单个屏蔽件更远的距离处，以优化微轨道轮廓。 伺服传感器频率响应的减少导致了精确伺服定位的足够带宽。

公开(公告)号：US5296993A

公开(公告)日：1994-03-22

申请号：US29346

申请日：1993-03-10

Applicant: Joseph A. Aboaf ,  Edward V. Denison ,  Vincent N. Kahwaty ,  Gerald Steving

Inventor： Joseph A. Aboaf ,  Edward V. Denison ,  Vincent N. Kahwaty ,  Gerald Steving

IPC: G11B5/31 ,  G11B5/39 ,  G11B5/187 ,  G11B5/23

CPC classification number: G11B5/3106 ,  G11B5/313 ,  G11B5/3143 ,  Y10T29/49041 ,  Y10T29/49044

Abstract: An interleaved bi-directional magnetic tape head for contact recording can have a poletip enhanced by providing a thin film of a soft magnetic material deposited onto a magnetic ferrite substrate. The second pole piece is a thin film of the soft magnetic material. A closure block of a non-magnetic ceramic encloses the layers together with leveling insulation layers and a deposited activating conductor turns. The stripe poletip deposited onto the magnetic ferrite extends for a distance just short of the first conductor turn and provides a balancing of the saturation moment of the pole pieces and provides for better recording capability, especially when operating in a trailing magnetic ferrite mode.

Abstract translation: 用于接触记录的交错双向磁带头可以通过提供沉积在磁性铁氧体衬底上的软磁性材料的薄膜来增强poletip。 第二极片是软磁材料的薄膜。 非磁性陶瓷的封闭块将层叠在一起，并具有平整绝缘层，并且沉积的激活导体转动。 沉积在磁性铁氧体上的条纹poletip延伸距离第一导体转弯的距离，并且提供磁极片的饱和力矩的平衡，并提供更好的记录能力，特别是在以后磁铁氧体模式运行时。

公开(公告)号：US06970331B1

公开(公告)日：2005-11-29

申请号：US10224011

申请日：2002-08-20

Applicant: Jing He ,  Joseph M. Schmalhorst ,  Carl A. Helms ,  Edward V. Denison

Inventor： Jing He ,  Joseph M. Schmalhorst ,  Carl A. Helms ,  Edward V. Denison

IPC: G11B5/00 ,  G11B5/33 ,  G11B5/39

CPC classification number: G11B5/3951 ,  G11B2005/0018

Abstract: A head includes first and second read modules. The first module has an MR element formed on a wafer having a grating directed along a first direction. The magnetization of the first module element is directed along the first direction. The first module element is biased with a first current directed along a direction such that magnetically stable operation of the element results, that is along an opposite second direction. The second module has an element formed on a wafer having a grating directed along the first direction. The second module is flipped respect to the first module such that the grating is directed along the second direction. The magnetization of the second module element is directed along the second direction. The second module element is biased with a second current directed along the direction opposite to the first current, i.e., the second current is directed along the first direction.

Abstract translation: 头包括第一和第二读取模块。 第一模块具有形成在具有沿着第一方向指向的光栅的晶片上的MR元件。 第一模块元件的磁化沿着第一方向被引导。 第一模块元件被沿着沿着方向引导的第一电流偏置，使得元件的磁稳定操作导致沿相反的第二方向。 第二模块具有形成在具有沿第一方向指向的光栅的晶片上的元件。 第二模块相对于第一模块翻转，使得光栅沿着第二方向被引导。 第二模块元件的磁化沿着第二方向被引导。 第二模块元件被沿着与第一电流相反的方向引导的第二电流偏置，即第二电流沿着第一方向被引导。