公开(公告)号：US20120206830A1

公开(公告)日：2012-08-16

申请号：US13028915

申请日：2011-02-16

申请人： Kaizhong Gao ,  Olle Heinonen ,  Yonghua Chen

发明人： Kaizhong Gao ,  Olle Heinonen ,  Yonghua Chen

IPC分类号： G11B5/127 ,  G11B21/02 ,  G11B5/00 ,  G11B5/02 ,  G11B15/12

CPC分类号： G11B21/106 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/3948 ,  G11B5/4886 ,  G11B5/596 ,  G11B5/746

摘要： In order to improve a consistent data track during writing to a storage medium, a plurality of read sensors are affixed to a transducer head. In one implementation, the transducer head includes multiple read sensors placed up-track of the write pole. In another implementation, the transducer head includes at least one read sensor placed up-track of the write pole and at least one read sensor placed down-track of the write pole. Each position of the multiple read sensors relative to the write pole may be unique. One or more read signals of selected read sensors are used to determine the read location and therefore the write pole location relative to the storage medium.

摘要翻译： 为了在写入存储介质期间改善一致的数据轨迹，多个读取传感器固定在换能器头上。 在一个实施方案中，换能器头部包括放置在写入极上的多个读取传感器。 在另一个实施方式中，换能器头包括至少一个读取传感器，其被放置在写入磁极的上方，并且至少一个读取传感器被放置在写入磁极的下方。 多个读取传感器相对于写入极的每个位置可以是唯一的。 使用所选择的读取传感器的一个或多个读取信号来确定读取位置并因此确定相对于存储介质的写入极点位置。

公开(公告)号：US08508880B2

公开(公告)日：2013-08-13

申请号：US13028915

申请日：2011-02-16

申请人： Kaizhong Gao ,  Olle Heinonen ,  Yonghua Chen

发明人： Kaizhong Gao ,  Olle Heinonen ,  Yonghua Chen

IPC分类号： G11B21/02

CPC分类号： G11B21/106 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/3948 ,  G11B5/4886 ,  G11B5/596 ,  G11B5/746

摘要： In order to improve a consistent data track during writing to a storage medium, a plurality of read sensors are affixed to a transducer head. In one implementation, the transducer head includes multiple read sensors placed up-track of the write pole. In another implementation, the transducer head includes at least one read sensor placed up-track of the write pole and at least one read sensor placed down-track of the write pole. Each position of the multiple read sensors relative to the write pole may be unique. One or more read signals of selected read sensors are used to determine the read location and therefore the write pole location relative to the storage medium.

摘要翻译： 为了在写入存储介质期间改善一致的数据轨迹，多个读取传感器固定在换能器头上。 在一个实施方案中，换能器头部包括放置在写入极上的多个读取传感器。 在另一个实施方式中，换能器头包括至少一个读取传感器，其被放置在写入磁极的上方，并且至少一个读取传感器被放置在写入磁极的下方。 多个读取传感器相对于写入极的每个位置可以是唯一的。 使用所选择的读取传感器的一个或多个读取信号来确定读取位置并因此确定相对于存储介质的写入极点位置。

公开(公告)号：US20110134572A1

公开(公告)日：2011-06-09

申请号：US12631183

申请日：2009-12-04

申请人： Jiaoming Qiu ,  Yonghua Chen ,  Kaizhong Gao

发明人： Jiaoming Qiu ,  Yonghua Chen ,  Kaizhong Gao

IPC分类号： G11B5/33

CPC分类号： G11B5/3932 ,  B82Y25/00 ,  G01R33/0011 ,  G01R33/093

摘要： A trilayer magnetoresistive sensor includes first and second ferromagnetic layers separated by a nonmagnetic layer. A high coercivity permanent magnet bias element biases the first ferromagnetic layer in a first direction. A high moment permanent magnet bias element biases the second ferromagnetic layer in a second direction substantially orthogonal to the first direction.

摘要翻译： 三层磁阻传感器包括由非磁性层分隔开的第一和第二铁磁层。 高矫顽力永磁体偏置元件沿第一方向偏置第一铁磁层。 高瞬间永磁偏置元件在与第一方向大致正交的第二方向上偏置第二铁磁层。

公开(公告)号：US08896972B2

公开(公告)日：2014-11-25

申请号：US12702045

申请日：2010-02-08

申请人： Kaizhong Gao ,  Xilin Peng ,  Zhongyan Wang ,  Yonghua Chen

发明人： Kaizhong Gao ,  Xilin Peng ,  Zhongyan Wang ,  Yonghua Chen

IPC分类号： G11B5/33 ,  G11B5/127 ,  G11B5/39 ,  H01L43/08

CPC分类号： G11B5/398 ,  G11B5/3912 ,  H01L43/08

摘要： In some examples, a system comprising a data storage member including a magnetic storage medium, the magnetic storage medium having a plurality of magnetic bit domains aligned on at least one data track, where a transition boundary between respective magnetic bit domains defines a transition curvature. The system may further comprise a magnetic read head including a first shield layer, a second shield layer, and a read sensor stack provided proximate to the first and second shield layers, where the magnetic read head senses a magnetic field of each of the plurality of magnetic bit domains according to a read playback sensitivity function. In some examples, the shield layers and read sensor stack may be configured to provide a reader playback sensitivity function that substantially corresponds to the shape of the respective magnetic bit domains.

摘要翻译： 在一些示例中，包括包括磁存储介质的数据存储构件的系统，所述磁存储介质具有在至少一个数据轨道上对准的多个磁位域，其中各个磁位域之间的过渡边界限定了转变曲率。 该系统还可以包括磁读取头，其包括靠近第一和第二屏蔽层设置的第一屏蔽层，第二屏蔽层和读取传感器堆叠，其中磁性读取头感测多个 根据读取播放灵敏度功能的磁性位域。 在一些示例中，屏蔽层和读取传感器堆叠可以被配置为提供基本对应于各个磁性位域的形状的读取器重放灵敏度功能。

公开(公告)号：US08077424B2

公开(公告)日：2011-12-13

申请号：US12473829

申请日：2009-05-28

申请人： Yonghua Chen ,  Kaizhong Gao

发明人： Yonghua Chen ,  Kaizhong Gao

IPC分类号： G11B21/02

CPC分类号： G11B5/314 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/743 ,  G11B5/746 ,  G11B5/82 ,  G11B20/10009 ,  G11B20/10222 ,  G11B2220/252

摘要： A magnetic device includes a read sensor, a writer and a synchronization sensor. The magnetic device is configured for writing information to and reading information from a magnetic medium that includes a plurality of discrete magnetic bits. The writer includes a write element, a first return element magnetically coupled to the write element, and a second return element magnetically coupled to the write element. The write element is positioned in between the first and second return elements. The synchronization sensor is located adjacent to the write element of the writer in a closely spaced arrangement, and is configured to generate a signal as a function of a sensed magnetic bit. The signal is used to position the writer element relative to the sensed magnetic bit.

摘要翻译： 磁性装置包括读取传感器，写入器和同步传感器。 磁性装置被配置为向包括多个离散磁头的磁介质写入信息并从其读取信息。 写入器包括写元件，磁耦合到写元件的第一返回元件和磁耦合到写元件的第二返回元件。 写元件位于第一和第二返回元件之间。 同步传感器以紧密间隔的布置位于写入器的写入元件附近，并且被配置为根据检测到的磁性位产生信号。 该信号用于将写入器元件相对于感测的磁性位置定位。

公开(公告)号：US08582250B2

公开(公告)日：2013-11-12

申请号：US12631183

申请日：2009-12-04

申请人： Jiaoming Qiu ,  Yonghua Chen ,  Kaizhong Gao

发明人： Jiaoming Qiu ,  Yonghua Chen ,  Kaizhong Gao

IPC分类号： G11B5/33 ,  G11B5/127

CPC分类号： G11B5/3932 ,  B82Y25/00 ,  G01R33/0011 ,  G01R33/093

摘要： A trilayer magnetoresistive sensor has at least first and second ferromagnetic layers separated by a nonmagnetic layer. A high coercivity permanent magnet bias element biases the first ferromagnetic layer in a first direction. A high moment permanent magnet bias element biases the second ferromagnetic layer in a second direction substantially orthogonal to the first direction.

摘要翻译： 三层磁阻传感器至少具有由非磁性层分离的第一和第二铁磁层。 高矫顽力永磁体偏置元件沿第一方向偏置第一铁磁层。 高瞬间永磁偏置元件在与第一方向大致正交的第二方向上偏置第二铁磁层。

公开(公告)号：US20100328823A1

公开(公告)日：2010-12-30

申请号：US12491838

申请日：2009-06-25

申请人： Yonghua Chen ,  Jiaoming Qiu ,  Xilin Peng ,  Kaizhong Gao

发明人： Yonghua Chen ,  Jiaoming Qiu ,  Xilin Peng ,  Kaizhong Gao

IPC分类号： G11B5/127

CPC分类号： G01R33/098 ,  G11B5/3912 ,  G11B5/3916 ,  G11B5/398 ,  H01L43/08

摘要： A magnetic reader comprises first and second shields oriented transversely to a media-facing surface, a magnetoresistive stack located between the first and second shields, and a flux guide. The magnetoresistive stack extends from a proximal end oriented toward the media-facing surface to a distal end oriented away from the media-facing surface. The flux guide extends from the first shield toward the second shield, and is spaced from the magnetoresistive stack at the distal end. The flux guide magnetically couples the distal end of the magnetoresistive stack to the first shield.

摘要翻译： 磁读取器包括横向于介质表面的第一和第二屏蔽层，位于第一和第二屏蔽之间的磁阻堆叠以及磁通引导件。 磁阻堆叠从朝向面向介质的表面的近端延伸到远离面向介质的表面的远端。 磁通引导件从第一屏蔽件延伸到第二屏蔽件，并且在远端处与磁阻堆叠件间隔开。 磁通引导件将磁阻堆叠的远端磁耦合到第一屏蔽层。

公开(公告)号：US20100302669A1

公开(公告)日：2010-12-02

申请号：US12473829

申请日：2009-05-28

申请人： Yonghua Chen ,  Kaizhong Gao

发明人： Yonghua Chen ,  Kaizhong Gao

IPC分类号： G11B5/09

CPC分类号： G11B5/314 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/743 ,  G11B5/746 ,  G11B5/82 ,  G11B20/10009 ,  G11B20/10222 ,  G11B2220/252

摘要： A magnetic device includes a read sensor, a writer and a synchronization sensor. The magnetic device is configured for writing information to and reading information from a magnetic medium that includes a plurality of discrete magnetic bits. The writer includes a write element, a first return element magnetically coupled to the write element, and a second return element magnetically coupled to the write element. The write element is positioned in between the first and second return elements. The synchronization sensor is located adjacent to the write element of the writer in a closely spaced arrangement, and is configured to generate a signal as a function of a sensed magnetic bit. The signal is used to position the writer element relative to the sensed magnetic bit.

摘要翻译： 磁性装置包括读取传感器，写入器和同步传感器。 磁性装置被配置为向包括多个离散磁头的磁介质写入信息并从其读取信息。 写入器包括写元件，磁耦合到写元件的第一返回元件和磁耦合到写元件的第二返回元件。 写元件位于第一和第二返回元件之间。 同步传感器以紧密间隔的布置位于写入器的写入元件附近，并且被配置为根据检测到的磁性位产生信号。 该信号用于将写入器元件相对于感测的磁性位置定位。

公开(公告)号：US20100149696A1

公开(公告)日：2010-06-17

申请号：US12336216

申请日：2008-12-16

申请人： Yonghua Chen ,  Eric Walter Singleton ,  Kaizhong Gao ,  Mohammed Shariat Ullah Patwari ,  Jason Bryce Gadbois ,  Daniel Paul Burbank

发明人： Yonghua Chen ,  Eric Walter Singleton ,  Kaizhong Gao ,  Mohammed Shariat Ullah Patwari ,  Jason Bryce Gadbois ,  Daniel Paul Burbank

IPC分类号： G11B5/33

CPC分类号： G11B5/40 ,  G11B5/3929

摘要： A magnetic device includes first and second electrodes and a sensor stack connected to the first and second electrodes proximate a sensing surface of the magnetic sensor. A resistive element is connected to the first and second electrodes in parallel or in series with the sensor stack and adjacent the sensing surface. In some embodiments, the resistive element is configured to generate signals related to changes in its resistance. A controller to respond to the resistive element signals can also be included.

摘要翻译： 磁性装置包括第一和第二电极以及连接到第一和第二电极的传感器组件，该传感器组件靠近磁性传感器的感测表面。 电阻元件与传感器堆叠平行或串联连接到第一和第二电极并且邻近检测表面。 在一些实施例中，电阻元件被配置为产生与其电阻变化相关的信号。 还可以包括用于响应电阻元件信号的控制器。

公开(公告)号：US08582251B2

公开(公告)日：2013-11-12

申请号：US12727670

申请日：2010-03-19

申请人： Kaizhong Gao ,  Lei Wang ,  Jiaoming Qiu ,  Yonghua Chen

发明人： Kaizhong Gao ,  Lei Wang ,  Jiaoming Qiu ,  Yonghua Chen

IPC分类号： G11B5/39

CPC分类号： G11B5/398 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3932

摘要： Various embodiments generally relate to a magnetic sensor, and more specifically to a magnetoresistive read head sensor. In one such exemplary embodiment, a magnetic sensor comprises a sensor stack and magnetic bias elements positioned adjacent opposite sides of the sensor stack. At least one of the bias elements has a non-rectangular shape, such as substantially trapezoidal or parallelogram shapes having non-perpendicular corners.

摘要翻译： 各种实施例通常涉及磁传感器，更具体地涉及磁阻读头传感器。 在一个这样的示例性实施例中，磁传感器包括传感器堆叠和邻近传感器堆叠的相对侧定位的磁偏置元件。 至少一个偏置元件具有非矩形形状，例如具有非垂直角的大致梯形或平行四边形。