公开(公告)号：US07551380B2

公开(公告)日：2009-06-23

申请号：US11861960

申请日：2007-09-26

申请人： Mark Lee Watson ,  Steven Gregory Trabert

发明人： Mark Lee Watson ,  Steven Gregory Trabert

IPC分类号： G11B5/02 ,  G11B5/09

CPC分类号： G11B5/584

摘要： A tape has a component of magnetization pointing out of a plane of the tape. To write a pulse of a servo pattern to the tape, the tape is passed over a write head with a conventional write gap. Current having a fixed polarity is provided to the write head. Once the current achieves a desired value, the current is no longer provided to the write head.

摘要翻译： 磁带具有指向磁带平面的磁化分量。 为了将伺服模式的脉冲写入磁带，磁带以常规的写入间隙通过写入头。 具有固定极性的电流被提供给写入头。 一旦电流达到期望值，电流就不再提供给写入头。

公开(公告)号：US07436630B1

公开(公告)日：2008-10-14

申请号：US10949652

申请日：2004-09-24

申请人： Mark Lee Watson ,  Kevin Dale McKinstry ,  Jeffrey Glenn Villiard

发明人： Mark Lee Watson ,  Kevin Dale McKinstry ,  Jeffrey Glenn Villiard

IPC分类号： G11B5/10 ,  G11B5/40

CPC分类号： G11B5/00821 ,  G11B5/40

摘要： A data storage device head having reduced media induced micro-discharge events. The data storage device head includes a support structure, and a wafer. A mitigation voltage, other than a ground potential, is presented to the wafer at a level sufficient to suppress media induced micro-discharge events.

摘要翻译： 一种数据存储装置头，其具有减小的介质诱导的微放电事件。 数据存储装置头包括支撑结构和晶片。 除了接地电位之外的缓解电压以足以抑制介质诱导的微放电事件的水平呈现给晶片。

公开(公告)号：US07352540B1

公开(公告)日：2008-04-01

申请号：US11017170

申请日：2004-12-20

申请人： Mark Lee Watson ,  Francis Campos ,  April Lynn Alstrin

发明人： Mark Lee Watson ,  Francis Campos ,  April Lynn Alstrin

IPC分类号： G11B5/39 ,  G11B5/31

CPC分类号： B82Y10/00 ,  B82Y25/00 ,  G11B5/00821 ,  G11B5/3916 ,  G11B2005/3996

摘要： A giant magneto-resistive (GMR) transducer for reading data signals magnetically recorded on tape includes a GMR sensor and a separation structure formed on a front edge of the GMR sensor. The GMR sensor reads data signals magnetically recorded on a tape located at a head-tape interface. The separation structure physically separates the GMR sensor from the head-tape interface. The separation structure includes at least one film formed of at least one of non-magnetic and ferromagnetic materials such that the separation structure isolates the GMR sensor from physical contact with the tape at the head-tape interface while maintaining the ability of the GMR sensor to read data signals magnetically recorded on the tape even though the GMR sensor is physically separated from the tape at the head-tape interface. The separation structure may include an under-layer film and an isolation film. The GMR transducer is fabricated by a series of fabrication steps.

摘要翻译： 用于读取磁性记录在磁带上的数据信号的巨磁阻（GMR）传感器包括GMR传感器和形成在GMR传感器前缘上的分离结构。 GMR传感器读取磁性记录在位于磁头磁带接口的磁带上的数据信号。 分离结构将GMR传感器与头带接口物理分离。 分离结构包括由非磁性材料和铁磁材料中的至少一种形成的至少一个膜，使得分离结构将GMR传感器与头带界面处的带的物理接触隔离，同时保持GMR传感器的能力 读取在磁带上磁性地记录的数据信号，即使GMR传感器在磁头磁带接口处与磁带物理分离。 分离结构可以包括下层膜和隔离膜。 GMR传感器通过一系列制造步骤制造。

公开(公告)号：US07256969B1

公开(公告)日：2007-08-14

申请号：US10862287

申请日：2004-06-07

申请人： Carl Stephen Arnold ,  Edward Virgil Denison ,  Carl Anthony Helms ,  Stein Klevdal ,  Kevin D. McKinstry ,  Mark Lee Watson

发明人： Carl Stephen Arnold ,  Edward Virgil Denison ,  Carl Anthony Helms ,  Stein Klevdal ,  Kevin D. McKinstry ,  Mark Lee Watson

IPC分类号： G11B5/127

CPC分类号： G11B5/398 ,  G01R33/09 ,  G01R33/096 ,  G11B5/3906 ,  G11B5/3932

摘要： A method and system are provided for implementing discrete step stabilization of AMR read sensors in tape or disk drives. In one implementation, a plurality of discrete step stabilizers and AMR read sensor elements are arranged with a rotational symmetry coupled with a plane inversion for an odd number of steps, and no inversion for an even number of steps. Preferably, the steps are oriented at 45 degrees, or approximately parallel to the desired bias direction. For relatively narrow track widths (e.g., approximately 5 microns), the edges of the sensor element nearest the permanent magnets are especially important to stabilize. Therefore, in one implementation, an edge of a stabilizer preferably intersects the edge of the sensor element at one half of the stripe height. Also, the rising and falling edges of the stabilizers do not always have the same slope. In order to compensate for the different slopes of a stabilizer's edges, the rising and falling edges of a stabilizer's pattern are interchanged by a “stabilizer phase” transformation to produce the complement (phase conjugate) of the stabilizer pattern. As such, if a single rising edge of a stabilizer pattern intersects the center of a sensor element, the “stabilizer phase” transformation changes this structure to a single falling edge that intersects the center of the sensor element.

摘要翻译： 提供了一种方法和系统，用于实现磁带或磁盘驱动器中AMR读取传感器的离散步进稳定。 在一个实施方案中，多个离散步进稳定器和AMR读取传感器元件被布置成与奇数步骤的平面反转耦合的旋转对称，并且对于偶数步骤而言没有反转。 优选地，步骤定向成45度，或大致平行于期望的偏压方向。 对于相对窄的轨道宽度（例如，大约5微米），最靠近永磁体的传感器元件的边缘对于稳定是特别重要的。 因此，在一个实施方案中，稳定器的边缘优选地在条纹高度的一半处与传感器元件的边缘相交。 此外，稳定器的上升和下降沿不总是具有相同的斜率。 为了补偿稳定器边缘的不同斜率，稳定器图案的上升和下降边缘通过“稳定器相位”变换互换，以产生稳定器图案的补码（相位共轭）。 因此，如果稳定器图案的单个上升沿与传感器元件的中心相交，则“稳定器相位”变换将该结构改变为与传感器元件的中心相交的单个下降沿。

公开(公告)号：US20090080108A1

公开(公告)日：2009-03-26

申请号：US11861960

申请日：2007-09-26

申请人： Mark Lee Watson ,  Steven Gregory Trabert

发明人： Mark Lee Watson ,  Steven Gregory Trabert

IPC分类号： G11B5/584

CPC分类号： G11B5/584

摘要： A tape has a component of magnetization pointing out of a plane of the tape. To write a pulse of a servo pattern to the tape, the tape is passed over a write head with a conventional write gap. Current having a fixed polarity is provided to the write head. Once the current achieves a desired value, the current is no longer provided to the write head.

摘要翻译： 磁带具有指向磁带平面的磁化分量。 为了将伺服模式的脉冲写入磁带，磁带以常规的写入间隙通过写入头。 具有固定极性的电流被提供给写入头。 一旦电流达到期望值，电流就不再提供给写入头。

公开(公告)号：US06826020B2

公开(公告)日：2004-11-30

申请号：US09933996

申请日：2001-08-20

申请人： Larry E. Daby ,  Mark Lee Watson

发明人： Larry E. Daby ,  Mark Lee Watson

IPC分类号： G11B539

CPC分类号： G11B5/3967 ,  G11B5/00817 ,  G11B5/127 ,  G11B5/2652 ,  G11B5/29 ,  G11B5/3103 ,  G11B5/4893 ,  G11B5/584 ,  G11B5/588

摘要： A two bump magnetic head for writing and reading information to a tape includes a merged-pole read/write element structure with inverted write elements. Each inverted write element includes top and bottom write poles. The write poles are fabricated such that the longitudinal dimension of the bottom write pole is smaller than the longitudinal dimension of the top write pole in a zero throat region. This results in an “inverted” structure. An upper portion of the bottom write pole is milled in at least the zero throat region early in fabrication to produce a precise width adjoining a write gap. The trimmed upper portion of bottom write pole results in an improved write geometry that produces tightly defined tracks.

摘要翻译： 用于向磁带写入和读取信息的两个隆起磁头包括具有反向写入元件的合并磁极读/写元件结构。 每个反向写入元件包括顶部和底部写入极。 写入极被制造成使得底部写入极的纵向尺寸小于零喉区域中顶部写入极的纵向尺寸。 这导致“倒”结构。 底部写入极的上部在至少零喉区域中在制造早期被铣削以产生与写入间隙相邻的精确宽度。 底部写入极的修剪的上部导致改进的写入几何形状，其产生紧密限定的轨迹。