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11. 发明授权

US06535361B2 Contact planar magnetoresistive head 失效
标题翻译：接触平面磁阻头
公开(公告)号：US06535361B2
公开(公告)日：2003-03-18
申请号：US09795954
申请日：2001-02-28
申请人： William C. Cain , Michael E. Devillier , Harold J. Hamilton , Robert D. Hempstead , Darren T. Imai , Dimitre A. Latev
发明人： William C. Cain , Michael E. Devillier , Harold J. Hamilton , Robert D. Hempstead , Darren T. Imai , Dimitre A. Latev
IPC分类号： G11B539
CPC分类号： G11B5/6005 , G11B5/1278 , G11B5/3176 , G11B5/3183 , G11B5/39 , G11B5/3967 , G11B5/40 , G11B5/484 , G11B21/02
摘要： A hard disk drive head operates in close proximity and dynamic contact with a rapidly spinning rigid disk surface, the head including a transducer with a magnetically permeable path between a poletip disposed adjacent to the disk surface and a magnetoresistive (MR) sensor situated outside the range of thermal noise generated by the surface contact. The magnetically permeable path is the same as that used to write data to the disk, eliminating errors that occur in conventional transducers having MR sensors at a separate location from the writing poletips. Moreover, the magnetically permeable path is preferably formed in a low profile, highly efficient “planar” loop that allows for manufacturing tolerances in throat height and wear of the terminal poletips from disk contact without poletip saturation or poletip smearing. The MR layer is formed in one of the first manufacturing steps atop the substrate, so that the MR layer has a relatively uniform planar template that is free from contaminants. A preferred embodiment has a laminated yoke for improved high frequency efficiency, with the MR element situated between the yoke lamina for improved sensitivity.
摘要翻译：一个硬盘驱动器头靠近并与快速旋转的刚性盘表面动态接触，该头部包括一个换能器，该传感器具有一个位于邻近磁盘表面的poletip之间的磁导通路径，以及位于该范围外的磁阻（MR）传感器由表面接触产生的热噪声。导磁通路与用于将数据写入磁盘的磁导通路径相同，消除了在与写入引脚分开的位置处具有MR传感器的常规传感器中发生的错误。此外，磁导通路优选地形成为低轮廓，高效的“平面”环路，其允许制造喉部高度的公差和终端小弹簧从盘接触的磨损，而不会引起耳波饱和或poletip拖尾。 MR层在基板顶部的第一制造步骤之一中形成，使得MR层具有不含污染物的相对均匀的平面模板。优选实施例具有用于提高高频效率的层叠轭，MR元件位于轭层之间，以提高灵敏度。

12. 发明授权

US06320725B1 Hard disk drive having ring head with predominantly perpendicular media fields 失效
标题翻译：具有环形头的硬盘驱动器，主要具有垂直的介质场
公开(公告)号：US06320725B1
公开(公告)日：2001-11-20
申请号：US08577493
申请日：1995-12-22
申请人： Alexander P. Payne , William C. Cain , Michael E. DeVillier , Harold J. Hamilton , Robert D. Hempstead , Darren T. Imai , Mark A. Lauer , Dimitre A. Latev , David D. Roberts
发明人： Alexander P. Payne , William C. Cain , Michael E. DeVillier , Harold J. Hamilton , Robert D. Hempstead , Darren T. Imai , Mark A. Lauer , Dimitre A. Latev , David D. Roberts
IPC分类号： G11B5127
CPC分类号： G11B5/6005 , G11B5/1278 , G11B5/3106 , G11B5/3176 , G11B5/3183 , G11B5/3967 , G11B5/6076
摘要： An information storage system having a ring head sliding on a rigid magnetic storage disk in such close proximity that the magnetic field felt by the media layer or layers of the disk has a larger perpendicular than longitudinal component so that data is stored in a perpendicular mode. The head to media separation during writing of data to the media is a small fraction of the amagnetic gap separating the poletips of the head. Reading of data may be inductive or may be via a magnetoresistive sensor which is coupled to the magnetically permeable core of the ring head far from the poletips. The media preferably has a high perpendicular anisotropy.
摘要翻译：一种信息存储系统，其具有在刚性磁存储盘上滑动的环形头，所述环形头在所述介质层或所述盘的层中感觉到的磁场具有比纵向分量更大的垂直于垂直模式的数据。在向媒体写入数据期间的媒体分离的头部是分离头部poletips的磁性间隙的一小部分。数据的读取可以是感性的，或者可以是经由磁阻传感器，该磁阻传感器耦合到远离耳环的环形头的导磁芯。介质优选具有高垂直各向异性。

13. 发明授权

US5508867A Magnetoresistive sensor with flux keepered spin valve configuration 失效
标题翻译：具有助焊剂自旋阀配置的磁阻传感器
公开(公告)号：US5508867A
公开(公告)日：1996-04-16
申请号：US349763
申请日：1994-12-05
申请人： William C. Cain , David E. Heim , Po-Kang Wang
发明人： William C. Cain , David E. Heim , Po-Kang Wang
IPC分类号： G01R33/09 , G11B5/31 , G11B5/39 , H01L43/08 , H01L43/10 , G11B5/127
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/3903 , H01L43/10 , G11B2005/3996
摘要： A magnetoresistive (MR) sensing system comprises an MR sensor with a layered spin valve structure including thin first and second layers of ferromagnetic material separated by a thin layer of nonmagnetic metallic material. The magnetization direction of the first layer at a zero applied magnetic field is substantially parallel to the longitudinal dimension of the MR sensor and substantially perpendicular to the fixed or "pinned" magnetization direction of the second layer. A thin keeper layer of ferromagnetic material is separated by a thin spacer layer from the layered spin valve structure. This keeper layer has a fixed magnetization direction substantially opposite that of the second layer and a moment-thickness product substantially equal to that of the second layer for cancelling the magnetostatic field from the second layer. A current flow is produced through the MR sensor to produce a magnetic field of a sign and magnitude which cancels the ferromagnetic exchange coupling between the first and second layers. Variations in resistivity of the MR sensor due to difference in rotation of the magnetizations in the first and second layers are sensed as a function of the magnetic field being sensed.
摘要翻译：磁阻（MR）感测系统包括具有分层自旋阀结构的MR传感器，其包括由非磁性金属材料的薄层隔开的薄的第一和第二层铁磁材料。在零施加磁场处的第一层的磁化方向基本上平行于MR传感器的纵向尺寸并且基本上垂直于第二层的固定或“固定”磁化方向。铁磁材料的薄的保持层由薄的间隔层与分层自旋阀结构隔开。该保持层具有与第二层基本上相反的固定磁化方向，以及基本上等于第二层的力矩厚度乘积，用于抵消来自第二层的静磁场。通过MR传感器产生电流，以产生抵消第一和第二层之间的铁磁交换耦合的符号和幅度的磁场。作为感测的磁场的函数，感测由于第一层和第二层中的磁化的旋转差异导致的MR传感器的电阻率变化。

14. 发明授权

US6008969A Planar recording head having formed yokes 失效
标题翻译：具有形成磁轭的平面记录头
公开(公告)号：US6008969A
公开(公告)日：1999-12-28
申请号：US993719
申请日：1997-12-18
申请人： Darren T. Imai , David D. Roberts , Dimitre A. Latev , William C. Cain
发明人： Darren T. Imai , David D. Roberts , Dimitre A. Latev , William C. Cain
IPC分类号： G11B5/31 , G11B5/60
CPC分类号： G11B5/3183 , G11B5/3163
摘要： A planar thin film magnetic head comprises an insulating substrate, a pair of insulating pedestals formed on the substrate, a top magnetic yoke having a central portion disposed over the substrate and having opposite ends supported on each of the pedestals. A conductor is provided over the top yoke central portion, and an insulating layer is disposed between the conductor and the top magnetic yoke. A bottom magnetic yoke is disposed over the conductor and has a gap in a central portion and opposite ends in contact with the top yoke ends.
摘要翻译：平面薄膜磁头包括绝缘基板，形成在基板上的一对绝缘基座，顶部磁轭，其中心部分设置在基板上并具有支撑在每个基座上的相对端部。导体设置在顶部磁轭中心部分之上，绝缘层设置在导体和顶部磁轭之间。底部磁轭设置在导体上方，并且在中心部分具有间隙，并且相对端部与顶部磁轭端部接触。

15. 发明授权

US5493467A Yoke spin valve MR read head 失效
标题翻译：轭式旋转阀MR读头
公开(公告)号：US5493467A
公开(公告)日：1996-02-20
申请号：US364913
申请日：1994-12-27
申请人： William C. Cain , Robert Fontana , Hugo A. Santini , Mason L. Williams, III
发明人： William C. Cain , Robert Fontana , Hugo A. Santini , Mason L. Williams, III
IPC分类号： G11B5/00 , G11B5/39 , G11B5/147 , G11B5/235
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B5/3925 , G11B2005/0016 , G11B2005/3996
摘要： The present invention is a yoke spin valve MR read head which electrically connects a spin valve MR sensor to spaced apart yoke portions. First and second yoke pieces are electrically connected at a head surface and are insulated from one another at a back gap which is remotely located from the head surface. The first yoke piece has a break which divides it into first and second portions which are spaced from one another. The spin valve MR sensor is located within this break and electrically interconnects the first and second portions of the first yoke piece. First and second leads are connected to the first and second yoke pieces respectively and receive a current from a current source for applying a sense current to the spin valve MR sensor via the first and second yoke pieces. When a magnetic medium is moved adjacent the head surface of the read head the yoke pieces serve as conductors for transmitting sense current to the spin valve MR sensor as well as functioning as a flux guide. Flux incursions propagated from the magnetic medium to the spin valve MR sensor via the yoke cause relative rotations between directions of magnetic moments of a pinned layer and a free layer which correspond to signals which can be processed by a signal processing device. The signal strength of the yoke spin valve MR sensor is superior to an anisotropic MR sensor and is easier to fabricate.
摘要翻译：本发明是将自旋阀MR传感器与间隔开的磁轭部分电连接的磁轭自旋阀MR读头。第一和第二轭片在头表面处电连接并且在远离头表面的后间隙处彼此绝缘。第一轭片具有将其分成彼此间隔开的第一和第二部分的断裂。自旋阀MR传感器位于该断裂之内并电互连第一轭片的第一和第二部分。第一和第二引线分别连接到第一和第二磁轭，并且从电流源接收电流，用于经由第一和第二磁轭将感测电流施加到自旋阀MR传感器。当磁性介质在读头的头表面附近移动时，轭件用作用于将感应电流传递到自旋阀MR传感器以及用作磁通引导件的导体。通过轭从磁介质传播到自旋阀MR传感器的磁通入侵引起与被信号处理装置处理的信号相对应的钉扎层和自由层的磁矩方向之间的相对旋转。轭自旋阀MR传感器的信号强度优于各向异性MR传感器，并且制造更容易。

16. 发明授权

US5438470A Magnetoresistive structure with contiguous junction hard bias design with low lead resistance 失效
标题翻译：具有连续接合硬偏置设计，具有低引线电阻的磁阻结构
公开(公告)号：US5438470A
公开(公告)日：1995-08-01
申请号：US242457
申请日：1994-05-13
申请人： Durga Ravipati , Yong Shen , William C. Cain
发明人： Durga Ravipati , Yong Shen , William C. Cain
IPC分类号： G11B5/31 , G11B5/39 , G11B5/33
CPC分类号： G11B5/399
摘要： A magnetoresistive read transducer includes a magnetoresistive (MR) layer having end regions spaced by a central active regions. A pair of hard-magnetic layers provide the longitudinal magnetic bias to the magnetoresistive layer. Each of the hard-magnetic layers is disposed in contact with one of the end regions of the magnetoresistive layer. In addition, a pair of electrical leads provide the bias current to the magnetoresistive layer. Each of the electrical leads is also disposed in contact with one of the end regions of the magnetoresistive layer. This arrangement enable the transducer of the present invention with the most optimal design. In essence, electrical current directly passes through the central active region of the magnetoresistive layer via the electrical leads as a low electrical resistance path. Magnetic flux of the longitudinal bias directly passes through the central active region of the magnetoresistive layer with a reduced probability of magnetic discontinuity.
摘要翻译：磁阻读取换能器包括具有由中心有源区间隔的端部区域的磁阻（MR）层。一对硬磁性层向磁阻层提供纵向磁偏置。每个硬磁性层被设置成与磁阻层的一个端部区域接触。此外，一对电引线向磁阻层提供偏置电流。每个电引线也设置成与磁阻层的一个端部区域接触。这种布置使得本发明的换能器具有最佳的设计。本质上，电流作为低电阻通路经由电引线直接通过磁阻层的中心有源区。纵向偏置的磁通直接通过磁阻层的中心有源区，磁性不连续的概率降低。

17. 发明授权

US06198607B1 Contact planar magnetoresistive head 失效
标题翻译：接触平面磁阻头
公开(公告)号：US06198607B1
公开(公告)日：2001-03-06
申请号：US08725296
申请日：1996-10-02
申请人： William C. Cain , Michael E. Devillier , Harold J. Hamilton , Robert D. Hempstead , Darren T. Imai , Dimitre A. Latev
发明人： William C. Cain , Michael E. Devillier , Harold J. Hamilton , Robert D. Hempstead , Darren T. Imai , Dimitre A. Latev
IPC分类号： G11B539
CPC分类号： G11B5/6005 , G11B5/1278 , G11B5/3176 , G11B5/3183 , G11B5/39 , G11B5/3967 , G11B5/40 , G11B5/484 , G11B21/02
摘要： A hard disk drive head operates in close proximity and dynamic contact with a rapidly spinning rigid disk surface, the head including a transducer with a magnetically permeable path between a poletip disposed adjacent to the disk surface and a magnetoresistive (MR) sensor situated outside the range of thermal noise generated by the surface contact. The magnetically permeable path is the same as that used to write data to the disk, eliminating errors that occur in conventional transducers having MR sensors at a separate location from the writing poletips. Moreover, the magnetically permeable path is preferably formed in a low profile, highly efficient “planar” loop that allows for manufacturing tolerances in throat height and wear of the terminal poletips from disk contact without poletip saturation or poletip smearing. The MR layer is formed in one of the first manufacturing steps atop the substrate, so that the MR layer has a relatively uniform planar template that is free from contaminants. A preferred embodiment has a laminated yoke for improved high frequency efficiency, with the MR element situated between the yoke lamina for improved sensitivity.
摘要翻译：一个硬盘驱动器头靠近并与快速旋转的刚性盘表面动态接触，该头部包括一个换能器，该传感器具有一个位于邻近磁盘表面的poletip之间的磁导通路径，以及位于该范围外的磁阻（MR）传感器由表面接触产生的热噪声。导磁通路与用于将数据写入磁盘的磁导通路径相同，消除了在与写入引脚分开的位置处具有MR传感器的常规传感器中发生的错误。此外，磁导通路优选地形成为低轮廓，高效的“平面”环路，其允许制造喉部高度的公差和终端小弹簧从盘接触的磨损，而不会引起耳波饱和或poletip拖尾。 MR层在基板顶部的第一制造步骤之一中形成，使得MR层具有不含污染物的相对均匀的平面模板。优选实施例具有用于提高高频效率的层叠轭，MR元件位于轭层之间，以提高灵敏度。

18. 发明授权

US07302501B1 Peripheral data storage system with multi-state user display 有权
标题翻译：具有多状态用户显示的外围数据存储系统
公开(公告)号：US07302501B1
公开(公告)日：2007-11-27
申请号：US10815516
申请日：2004-03-31
申请人： William C. Cain , Kevin W. McLaughlin , Barry L. Klein
发明人： William C. Cain , Kevin W. McLaughlin , Barry L. Klein
IPC分类号： G06F3/00 , G06F13/12
CPC分类号： G06F11/328
摘要： A method of displaying states of a peripheral data storage system (PDSS) comprising a data storage device, a data storage system controller, a user-actuated signaling subsystem, a user display subsystem adapted to display the states, and a peripheral data storage controller host interface adapted for communication with a host system. The method includes determining a state of the PDSS; displaying a first display state via the user display subsystem if the PDSS is in an idle state; displaying a second display state via the user display subsystem if the PDSS is in a state corresponding to receiving a signal from the user-actuated signaling subsystem; displaying a third display state via the user display subsystem if the PDSS is in a dynamically active state; and displaying a fourth display state via the user display subsystem if the PDSS is in an off state.
摘要翻译：一种显示外围数据存储系统（PDSS）的状态的方法，包括数据存储设备，数据存储系统控制器，用户致动的信令子系统，适于显示状态的用户显示子系统以及外围数据存储控制器主机接口，适于与主机系统进行通信。该方法包括确定PDSS的状态; 如果PDSS处于空闲状态，则经由用户显示子系统显示第一显示状态; 如果PDSS处于与从用户启动的信令子系统接收信号相对应的状态，则经由用户显示子系统显示第二显示状态; 如果PDSS处于动态激活状态，则经由用户显示子系统显示第三显示状态; 以及如果所述PDSS处于关闭状态，则经由所述用户显示子系统显示第四显示状态。

19. 发明授权

US06212047B1 Hard disk drive with magnetoresistive head and perpendicular media 失效
标题翻译：具有磁阻头和垂直介质的硬盘驱动器
公开(公告)号：US06212047B1
公开(公告)日：2001-04-03
申请号：US08771468
申请日：1996-12-20
申请人： Alexander P. Payne , William C. Cain , Michael E. Devillier , Harold J. Hamilton , Robert D. Hempstead , Darren T. Imai , Dimitre A. Latev , Mark A. Lauer , David D. Roberts
发明人： Alexander P. Payne , William C. Cain , Michael E. Devillier , Harold J. Hamilton , Robert D. Hempstead , Darren T. Imai , Dimitre A. Latev , Mark A. Lauer , David D. Roberts
IPC分类号： G11B539
CPC分类号： G11B5/6005 , G11B5/1278 , G11B5/3106 , G11B5/3176 , G11B5/3183 , G11B5/3967 , G11B5/6076
摘要： An information storage system having a ring head in such close proximity to a rigid magnetic storage disk that the magnetic field felt by the media layer or layers of the disk has a larger perpendicular than longitudinal component so that data is stored in a perpendicular mode. Reading of data is accomplished with a magnetoresistive sensor which may be coupled to the magnetically permeable core of the ring head far from the poletips, which may contact the disk. The media preferably has a high perpendicular anisotropy, and may be formed in a plurality of films with crystalline structures traversing the films.
摘要翻译：一种信息存储系统，其具有如此靠近刚性磁存储盘的环形头，所述刚性磁存储盘使得所述介质层感觉到的磁场或所述盘的层具有比纵向分量更大的垂直于垂直模式的数据。数据读取是通过一个磁阻传感器实现的，该磁阻传感器可耦合到远离可以接触磁盘的引脚的环形头部的导磁芯。介质优选具有高垂直各向异性，并且可以形成为具有穿过膜的结晶结构的多个膜。

20. 发明授权

US4800457A Magnetoresistive sensor element 失效
标题翻译：磁阻传感器元件
公开(公告)号：US4800457A
公开(公告)日：1989-01-24
申请号：US102426
申请日：1987-09-29
申请人： Mark Kryder , William C. Cain , William H. Meiklejohn
发明人： Mark Kryder , William C. Cain , William H. Meiklejohn
IPC分类号： G11B5/31 , G11B5/39 , H01L43/08
CPC分类号： G11B5/399 , G11B5/3903 , H01L43/08 , G11B5/3163
摘要： A magnetoresistive sensor which includes an element having a first layer that exhibits a magnetoresistive response, a second layer that magnetically biases the first layer and is in contact therewith, and possibly a substrate that contacts the first layer, with the first layer disposed between the second layer and the substrate. Of course, the first and second layers are interchangeable. Adjoining a side of the second layer is an anode contact and a cathode contact. The anode contact and the cathode contact are positioned on the side of the second layer such that they do not contact each other.
摘要翻译：一种磁电阻传感器，其包括具有表现出磁阻响应的第一层的元件，磁性地偏压第一层并与之接触的第二层，以及可能的与第一层接触的衬底，第一层设置在第二层之间层和基底。当然，第一和第二层是可互换的。邻接第二层的一侧是阳极接触和阴极接触。阳极接触件和阴极接触件位于第二层的侧面，使得它们不彼此接触。

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