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1. 发明授权

US09146875B1 Hybrid drive converting non-volatile semiconductor memory to read only based on life remaining 有权
标题翻译：混合驱动器将非易失性半导体存储器转换为仅基于剩余寿命读取
公开(公告)号：US09146875B1
公开(公告)日：2015-09-29
申请号：US13105785
申请日：2011-05-11
申请人： William B. Boyle , Mei-Man L. Syu , William C. Cain
发明人： William B. Boyle , Mei-Man L. Syu , William C. Cain
IPC分类号： G06F12/08 , G06F3/06 , G06F12/02
CPC分类号： G06F12/0866 , G06F3/0679 , G06F3/068 , G06F12/0246 , G06F2212/1036 , G06F2212/7205
摘要： A hybrid drive is disclosed comprising a head actuated over a disk comprising a plurality of data tracks, and a non-volatile semiconductor memory (NVSM) comprising a plurality of memory segments. When a life remaining of the NVSM falls below a threshold, the NVSM is marked as read only. When a write command is received from a host including write data, and when the NVSM is marked as read only, the write data is written to the disk and a corresponding memory segment in the NVSM is invalidated.
摘要翻译：公开了一种混合驱动器，包括在包括多个数据轨道的盘上启动的磁头和包括多个存储器段的非易失性半导体存储器（NVSM）。当NVSM的剩余寿命低于阈值时，NVSM被标记为只读。当从包括写入数据的主机接收到写入命令时，并且当NVSM被标记为只读时，写入数据被写入到磁盘，并且NVSM中的对应的存储器段无效。

2. 发明授权

US07237054B1 Switching interfaces in external disk drives 有权
标题翻译：切换外部磁盘驱动器中的接口
公开(公告)号：US07237054B1
公开(公告)日：2007-06-26
申请号：US10789889
申请日：2004-02-27
申请人： William C. Cain , Barry L. Klein , Kevin W. McLaughlin
发明人： William C. Cain , Barry L. Klein , Kevin W. McLaughlin
IPC分类号： G06F3/00 , G06F13/00 , H02N11/00
CPC分类号： G06F3/0617 , G06F3/0673
摘要： In an external disk drive system comprising a disk drive, a bridge controller comprising a plurality of Bridge Controller Host (BCH) interfaces adapted to establish communication between the external disk drive system and an external device via a plurality of different communication mediums, a method for switching from a first BCH-interface communicating with the external device via a first communication medium to a second BCH-interface during the operation of the external disk drive system. The method comprising sensing a connecting of a second communication medium to the external disk drive system via the second BCH-interface; determining an interface priority of the second communication medium over an interface priority of the first communication medium; dismounting the disk drive from the first communication medium based on the determining; and mounting the disk drive to the second communication medium wherein the external disk drive system remains operational during the dismounting an mounting.
摘要翻译：在包括磁盘驱动器的外部磁盘驱动器系统中，桥接控制器包括适于通过多个不同的通信介质在外部磁盘驱动器系统和外部设备之间建立通信的多个桥接器控制器主机（BCH）接口，在外部磁盘驱动器系统的操作期间，从经由第一通信介质与第二BCH接口通信的第一BCH接口切换到第二BCH接口。该方法包括：经由第二BCH接口检测第二通信介质与外部磁盘驱动器系统的连接; 通过所述第一通信介质的接口优先级来确定所述第二通信介质的接口优先级; 基于所述确定从所述第一通信介质去除所述磁盘驱动器; 以及将所述磁盘驱动器安装到所述第二通信介质，其中所述外部磁盘驱动器系统在拆卸安装期间保持操作。

3. 发明授权

US06493191B1 Planar magnetic ring head for contact recording with a rigid disk 失效
标题翻译：平面磁环头，用于与刚性盘接触记录
公开(公告)号：US06493191B1
公开(公告)日：2002-12-10
申请号：US08528890
申请日：1995-09-15
申请人： William C. Cain , Richard D. Anderson , Michael A. Baldwinson , Keith R. Berding , Michael E. Devillier , Garrett A. Garrettson , Randolph S. Gluck , Harold J. Hamilton , Robert D. Hempstead , Darren T. Imai , Kwang K. Kim , Dimitre A. Latev , Alexander P. Payne , David D. Roberts
发明人： William C. Cain , Richard D. Anderson , Michael A. Baldwinson , Keith R. Berding , Michael E. Devillier , Garrett A. Garrettson , Randolph S. Gluck , Harold J. Hamilton , Robert D. Hempstead , Darren T. Imai , Kwang K. Kim , Dimitre A. Latev , Alexander P. Payne , David D. Roberts
IPC分类号： G11B5187
CPC分类号： G11B5/3163 , G11B5/3106 , G11B5/3183
摘要： A transducer for a hard disk drive system has a planar magnetic core and a pair of poletips that project transversely from the core for sliding contact with the disk during reading and writing. The transducer is formed entirely of thin films in the shape of a low profile table having three legs that slide on the disk, the poletips being exposed at a bottom of one of the legs for high resolution communication with the disk, the throat height of the poletips affording sufficient tolerance to allow for wear. The legs elevate the transducer from the disk sufficiently to minimize lifting by a thin air layer that moves with the spinning disk which, in combination with the small size of the thin film head allows a low load and a flexible beam and gimbal to hold the transducer to the disk. The transducer includes a loop shaped core of magnetic material that ends at the poletips, the core extending further parallel than perpendicular to the disk surface and preferably being formed of a plurality of slightly spaced ribbons of magnetic material in order to increase high frequency permeance. A high magnetic saturation layer may be formed adjoining the gap in at least the trailing poletip, in order to avoid saturation at the poletips during writing. The dimensions of the yoke adjacent to the poletips are also designed to avoid saturation at the poletips by saturating at a lower flux in the yoke than the poletips. The close relationship between the transducer and the media of the disk affords high density magnetic data storage and retrieval.
摘要翻译：用于硬盘驱动系统的换能器具有平面磁芯和一对从芯体横向突出的小纸片，用于在读写期间与盘滑动接触。传感器完全由薄板形成，其具有在盘上滑动的三条腿的小型表，其中一条腿露出在一条腿的底部，用于与盘的高分辨率通信，喉部的高度小腿提供足够的耐受性以允许磨损。这些腿将传感器从盘上提升到足以最小化由旋转盘移动的薄空气层的提升，其与小尺寸的薄膜头允许低负载并且柔性梁和万向节保持换能器到磁盘。换能器包括磁性材料的环形磁芯，其在端部终止，芯体比垂直于磁盘表面进一步平行延伸，并且优选地由多个稍微间隔的磁性材料带形成，以便增加高频磁导率。至少可以在至少尾部poletip中形成邻接间隙的高磁饱和层，以避免写入期间在poletips处的饱和。靠近小翼片的轭的尺寸也被设计成通过在轭中的低通量饱和而不是poletips饱和。传感器与磁盘介质之间的紧密关系提供了高密度的磁数据存储和检索。

4. 发明授权

US5617278A Magnetic head structure with reduction of magnetic domain instability 失效
标题翻译：磁头结构，磁畴不稳定性降低
公开(公告)号：US5617278A
公开(公告)日：1997-04-01
申请号：US413071
申请日：1995-03-20
申请人： Shih-Cheng Cheng , Hua-Ching Tong , William C. Cain
发明人： Shih-Cheng Cheng , Hua-Ching Tong , William C. Cain
IPC分类号： G11B5/31 , G11B5/147
CPC分类号： G11B5/3113
摘要： Boundary protrusions or kinks are integrally formed along the perimeter of a magnetic layer of a magnetic transducer for nucleating a predetermined domain pattern in the magnetic layer. These protrusions or kinks behave as domineering pinning sites for the domain walls, overriding other factors such as manufacturing tolerances or external magnetic field, for establishing a stable magnetic domain pattern. As arranged, various kinds of noise encountered during the normal operations of the transducer are significantly reduced, as the noise related problems originated from the magnetic domain instabilities in the magnetic layers are substantially curtailed.
摘要翻译：边界突起或扭结沿着磁换能器的磁性层的周边整体地形成，用于使磁性层中的预定畴图案成核。这些突起或扭结表现为畴壁的霸主钉扎位置，覆盖诸如制造公差或外部磁场的其他因素，以建立稳定的磁畴图案。如上所述，由于来自磁性层中的磁畴不稳定性的噪声相关问题大大减少，所以在换能器的正常操作期间遇到的各种噪声显着降低。

5. 发明授权

US5301079A Current biased magnetoresistive spin valve sensor 失效
标题翻译：电流偏置磁阻自旋阀传感器
公开(公告)号：US5301079A
公开(公告)日：1994-04-05
申请号：US977382
申请日：1992-11-17
申请人： William C. Cain , Bernard Dieny , Robert E. Fontana, Jr. , Virgil S. Speriosu
发明人： William C. Cain , Bernard Dieny , Robert E. Fontana, Jr. , Virgil S. Speriosu
IPC分类号： G01R33/09 , G11B5/02 , G11B5/39 , H01L43/08 , G11B5/30
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B2005/3996
摘要： A magnetoresistive read sensor based on the spin valve effect in which a component of the read element resistance varies as the cosine of the angle between the magnetization directions in two adjacent magnetic layers is described. The sensor read element includes two adjacent ferromagnetic layers separated by a non-magnetic metallic layer, the magnetic easy axis of each of the ferromagnetic layers being aligned along the longitudinal axis of the ferromagnetic layers and perpendicular to the trackwidth of an adjacent magnetic storage medium. The sense current flowing in the sensor element generates a bias field which sets the direction of magnetization in each ferromagnetic layer at an equal, but opposite, angle .theta. with respect to the magnetic easy axis thus providing an angular separation of 2.theta. in the absence of an applied magnetic signal. The magnetizations of both ferromagnetic layers are responsive to an applied magnetic field to change their angular separation by an amount 2.delta..theta..
摘要翻译：基于自旋阀效应的磁阻读取传感器，其中读取元件电阻的分量随着两个相邻磁性层中的磁化方向之间的角度的余弦而变化。传感器读取元件包括由非磁性金属层隔开的两个相邻的铁磁层，每个铁磁层的磁性容易轴沿着铁磁层的纵向轴线并且垂直于相邻磁性存储介质的轨道宽度排列。在传感器元件中流动的感测电流产生偏置场，其将每个铁磁层中的磁化方向设置成相对于易磁化轴相等但相反的角度（θ），从而提供2（θ）的角度间隔，在没有施加的磁信号的情况下。两个铁磁层的磁化响应于施加的磁场来改变它们的角度间隔2（delta）（θ）。

6. 发明授权

US09563397B1 Disk drive using non-volatile cache when garbage collecting log structured writes 有权
标题翻译：磁盘驱动器使用非易失性缓存时垃圾收集日志结构化写入
公开(公告)号：US09563397B1
公开(公告)日：2017-02-07
申请号：US12774643
申请日：2010-05-05
申请人： Kroum S. Stoev , Davide Guarisco , Eric J. Champion , William C. Cain
发明人： Kroum S. Stoev , Davide Guarisco , Eric J. Champion , William C. Cain
IPC分类号： G06F12/00 , G06F21/00 , G06F13/00 , G06F5/06 , G06F5/10
CPC分类号： G06F5/065 , G06F5/10 , G06F12/0246 , G06F12/0866 , G06F2212/1016 , G06F2212/1041 , G06F2212/222 , G06F2212/702 , G06F2212/7201 , G06F2212/7205
摘要： A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of tracks, each track comprising a plurality of data sectors. A circular buffer is defined comprising a plurality of the tracks. During a garbage collection operation, write data is read from previously written valid data sectors corresponding to a tail of the circular buffer and stored in a non-volatile cache. During a flush operation, the write data is flushed from the non-volatile cache to the disk.
摘要翻译：公开了一种磁盘驱动器，其包括在包括多个磁道的磁盘上启动的磁头，每个磁道包括多个数据扇区。定义包括多个轨道的循环缓冲器。在垃圾收集操作期间，从与循环缓冲器的尾部相对应的先前写入的有效数据扇区中读取写入数据并存储在非易失性高速缓存中。在刷新操作期间，将写入数据从非易失性缓存刷新到磁盘。

7. 发明授权

US08825977B1 Hybrid drive writing copy of data to disk when non-volatile semiconductor memory nears end of life 有权
标题翻译：当非易失性半导体存储器接近寿命时，混合驱动器将数据写入磁盘
公开(公告)号：US08825977B1
公开(公告)日：2014-09-02
申请号：US12892837
申请日：2010-09-28
申请人： Mei-Man L. Syu , Virgil V. Wilkins , William B. Boyle , Alan T. Meyer , William C. Cain
发明人： Mei-Man L. Syu , Virgil V. Wilkins , William B. Boyle , Alan T. Meyer , William C. Cain
IPC分类号： G06F12/00 , G06F13/00 , G06F13/28
CPC分类号： G06F3/0616 , G06F3/065 , G06F3/068
摘要： A hybrid drive is disclosed comprising a head actuated over a disk, and a non-volatile semiconductor memory (NVSM). When a write command is received from a host that is mapped to the NVSM, the write command is serviced by writing data to the NVSM, and when a life remaining of the NVSM falls below a threshold, by also writing a copy of the data to the disk.
摘要翻译：公开了一种混合驱动器，其包括在盘上致动的磁头和非易失性半导体存储器（NVSM）。当从映射到NVSM的主机接收到写入命令时，通过向NVSM写入数据来服务写入命令，并且当NVSM的剩余寿命下降到阈值以下时，通过还将数据的副本写入磁盘。

8. 发明授权

US08639872B1 Hybrid drive comprising write cache spanning non-volatile semiconductor memory and disk 有权
标题翻译：混合驱动器包括跨越非易失性半导体存储器和磁盘的写缓存
公开(公告)号：US08639872B1
公开(公告)日：2014-01-28
申请号：US13149703
申请日：2011-05-31
申请人： William B. Boyle , Mei-Man L. Syu , William C. Cain
发明人： William B. Boyle , Mei-Man L. Syu , William C. Cain
IPC分类号： G06F12/00
CPC分类号： G06F12/0871 , G06F3/0616 , G06F3/0656 , G06F3/068
摘要： A hybrid drive is disclosed comprising a head actuated over a disk comprising a plurality of data tracks, where each data track comprises a plurality of data sectors. The hybrid drive further comprises a non-volatile semiconductor memory (NVSM) comprising a plurality of memory segments. When a write command is received from a host including write data, the write data is written to one of a disk cache and a NVSM cache, wherein the write data is eventually flushed to a non-cache area of the disk.
摘要翻译：公开了一种混合驱动器，其包括在包括多个数据轨道的磁盘上启动的磁头，其中每个数据磁道包括多个数据扇区。混合驱动器还包括包括多个存储器段的非易失性半导体存储器（NVSM）。当从包括写入数据的主机接收到写入命令时，将写入数据写入磁盘高速缓存和NVSM高速缓存中的一个，其中写入数据最终被刷新到磁盘的非高速缓存区域。

9. 发明授权

US07302579B1 Performing backup operations to peripheral data storage systems 有权
标题翻译：对外围数据存储系统执行备份操作
公开(公告)号：US07302579B1
公开(公告)日：2007-11-27
申请号：US10816348
申请日：2004-03-31
申请人： William C. Cain , Matthew G. Rutledge , Chinying Sun , Kevin W. McLaughlin
发明人： William C. Cain , Matthew G. Rutledge , Chinying Sun , Kevin W. McLaughlin
IPC分类号： G06F9/00
CPC分类号： G06F11/1461 , G06F11/1451 , G06F11/1456 , G06F11/1458
摘要： A method of operating a peripheral data storage system(PDSS) for use with a host system configured to perform scheduled backup operations to PDSS comprising a user-actuated backup signaling subsystem(UBSS), a user-notifying device comprising first and second notifying states, and a host interface adapted for communication with the host system. The method comprises receiving a first signal from UBSS; communicating first signal to host system via host interface; receiving an acknowledgement signal from host system in response to communicating; and switching user-notifying device between first notifying state and second notifying state in response to received acknowledgement signal. Another method comprises receiving in host system a first request from PDSS for performing a task corresponding to a host-scheduled backup operation for a scheduled backing up of data to PDSS; completing the task by host system based on received first request; and notifying PDSS of completion of the task by host system.
摘要翻译：一种操作外围数据存储系统（PDSS）的方法，所述外围数据存储系统（PDSS）用于配置为对PDSS执行预定备份操作的主机系统，所述PDSS包括用户致动的备份信令子系统（UBSS），包括第一和第二通知状态的用户通知设备，以及适于与主机系统通信的主机接口。该方法包括从UBSS接收第一信号; 通过主机接口将第一个信号传送到主机系统; 响应于通信从主机系统接收确认信号; 以及响应于接收到的确认信号在第一通知状态和第二通知状态之间切换用户通知设备。另一种方法包括在主机系统中接收来自PDSS的第一请求，用于执行与主计划备份操作相对应的任务，用于数据到PDSS的预定备份; 基于收到的第一个请求，由主机系统完成任务; 并通过主机系统通知PDSS完成任务。

10. 发明授权

US07095585B2 Hard disk drive for perpendicular recording with transducer having submicron gap between pole tips 有权
公开(公告)号：US07095585B2
公开(公告)日：2006-08-22
申请号：US10970782
申请日：2004-10-20
申请人： Alexander P. Payne , William C. Cain , Michael E. Devillier , Harold J. Hamilton , Robert D. Hempstead , Darren T. Imai , Dimitre A. Latev , 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 , David D. Roberts
IPC分类号： G11B5/147 , G11B5/235
CPC分类号： G11B5/6005 , G11B5/1278 , G11B5/3106 , G11B5/3176 , G11B5/3183 , G11B5/3967 , G11B5/6076
摘要： An information storage system includes a transducer having a loop of ferromagnetic material with pole tips separated by an nonferromagnetic gap located adjacent to a medium such as a rigid disk. During writing the separation between the pole tips and the media layer of the disk is a small fraction of the gap separation. Due to the small separation between the pole tips and the media layer, the magnetic field generated by the transducer and felt by the media has a larger perpendicular than longitudinal component, favoring perpendicular recording over longitudinal recording. The media may have an easy axis of magnetization oriented substantially along the perpendicular direction, so that perpendicular data storage is energetically favored. The transducer may also include a magnetoresistive sensor for reading magnetic information from the disk.

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