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21. 发明授权

US09202498B2 Resistance temperature sensors powered using reader bond pad sharing 有权
标题翻译：电阻温度传感器采用读卡器焊盘共享
公开(公告)号：US09202498B2
公开(公告)日：2015-12-01
申请号：US13836124
申请日：2013-03-15
申请人： Seagate Technology LLC
发明人： Declan Macken
IPC分类号： G11B5/60 , G01K13/06
CPC分类号： G11B5/607 , G01K13/06 , G11B5/6076
摘要： A head transducer comprises a reader coupled to reader bond pads and configured to interact with a magnetic storage medium. A first thermal sensor is configured to produce a first sensor signal. The first sensor is biased relative to a common mode voltage at the reader bond pads. A second thermal sensor is configured to produce a second sensor signal. One of the first and second sensors is situated at or near a close point of the head transducer in relation to the magnetic storage medium, and the other of the first and second sensors spaced away from the close point. Circuitry is configured to combine the first and second sensor signals and produce a combined sensor signal indicative of one or both of a change in head-medium spacing and head-medium contact.
摘要翻译：头传感器包括耦合到读取器接合焊盘并被配置为与磁存储介质相互作用的读取器。第一热传感器被配置为产生第一传感器信号。第一传感器相对于读取器接合焊盘处的共模电压而偏置。第二热传感器被配置为产生第二传感器信号。第一传感器和第二传感器中的一个位于头部换能器相对于磁性存储介质的接近点或其附近，并且第一和第二传感器中的另一个与近端点间隔开。电路被配置为组合第一和第二传感器信号并产生指示头 - 介质间隔和头 - 介质接触的变化中的一个或两个的组合的传感器信号。

22. 发明授权

US09123381B2 Resistive temperature sensors for improved asperity, head-media spacing, and/or head-media contact detection 有权
标题翻译：电阻式温度传感器，用于改善粗糙度，头部介质间距和/或头部 - 介质接触检测
公开(公告)号：US09123381B2
公开(公告)日：2015-09-01
申请号：US13298712
申请日：2011-11-17
申请人： Manuel Anaya-Dufresne , Brian W. Karr , Gary J. Kunkel , Zhen Wei
发明人： Manuel Anaya-Dufresne , Brian W. Karr , Gary J. Kunkel , Zhen Wei
IPC分类号： G01K7/16 , G11B5/00 , G11B20/10 , G11B5/60
CPC分类号： G11B5/607 , G01K13/00 , G11B5/024 , G11B5/3133 , G11B5/6011 , G11B5/6076 , G11B7/0948 , G11B7/121 , G11B20/10 , G11B27/36
摘要： A sensor supported by a head transducer has a temperature coefficient of resistance (TCR) and a sensor resistance. The sensor operates at a temperature above ambient and is responsive to changes in sensor-medium spacing. Conductive contacts connected to the sensor have a contact resistance and a cross-sectional area adjacent to the sensor larger than that of the sensor, such that the contact resistance is small relative to the sensor resistance and negligibly contributes to a signal generated by the sensor. A multiplicity of head transducers each support a TCR sensor and a power source can supply bias power to each sensor of each head to maintain each sensor at a fixed temperature above an ambient temperature in the presence of heat transfer changes impacting the sensors. A TCR sensor of a head transducer can include a track-oriented TCR sensor wire for sensing one or both of asperities of the medium.
摘要翻译：由头部换能器支撑的传感器具有电阻温度系数（TCR）和传感器电阻。传感器在高于环境温度的温度下工作，并响应传感器 - 介质间距的变化。连接到传感器的导电触头具有与传感器相邻的接触电阻和与传感器相邻的横截面面积，使得接触电阻相对于传感器电阻较小，并且对传感器产生的信号可忽略不计。多个头传感器各自支持TCR传感器，并且电源可以向每个头部的每个传感器提供偏置功率，以在存在影响传感器的热传递变化的情况下将每个传感器维持在高于环境温度的固定温度。头传感器的TCR传感器可以包括用于感测介质的粗糙体中的一个或两个的面向轨道的TCR传感器线。

23. 发明授权

US09111572B2 Asperity and head-media contact detection using multi-stage temperature coefficient of resistance sensor 有权
标题翻译：使用多级温度系数的电阻传感器进行粗糙度和头部介质接触检测
公开(公告)号：US09111572B2
公开(公告)日：2015-08-18
申请号：US14287412
申请日：2014-05-27
申请人： Seagate Technology LLC
发明人： Gary Joseph Kunkel , John L. Brand
IPC分类号： G11B21/20 , G11B20/10 , G11B5/60 , G11B13/04 , G11B27/36
CPC分类号： G11B5/607 , G01K13/00 , G11B5/024 , G11B5/3133 , G11B5/6011 , G11B5/6076 , G11B7/0948 , G11B7/121 , G11B20/10 , G11B27/36
摘要： A multi-stage sensor is situated on the head transducer and configured to interact with a magnetic recording medium. A first sensor stage of the multi-stage sensor has a temperature coefficient of resistance. A second sensor stage of the multi-stage sensor is coupled to the first sensor and has a temperature coefficient of resistance. The first sensor stage is configured to preferentially sense asperities of the media relative to the second sensor stage, and the second sensor stage configured to preferentially sense proximity to, and contact with, a surface of the media relative to the first sensor stage. The first and second sensor stages may be connected in series or in parallel.
摘要翻译：多级传感器位于头部传感器上并被配置为与磁记录介质相互作用。多级传感器的第一传感器级具有电阻的温度系数。多级传感器的第二传感器级耦合到第一传感器并具有电阻的温度系数。第一传感器级被配置为优先地感测相对于第二传感器级的介质的不均匀性，并且第二传感器级被配置为优先地感测与介质相对于第一传感器级的表面的接近和接触。第一和第二传感器级可以串联或并联连接。

24. 发明申请

US20150199992A1 TOPOGRAPHIC FEEDFORWARD SYSTEM 有权
标题翻译：地理信息系统
公开(公告)号：US20150199992A1
公开(公告)日：2015-07-16
申请号：US14667392
申请日：2015-03-24
申请人： Elwha LLC
发明人： Roderick A. Hyde , Jordin T. Kare , Lowell L. Wood, JR.
IPC分类号： G11B21/21
CPC分类号： G11B5/6011 , G11B5/455 , G11B5/6076 , G11B7/0908 , G11B7/122 , G11B20/10 , G11B20/10481 , G11B21/21
摘要： A control mechanism may control the height and/or position of a read/write head configured to interact with a rotating information storage surface. A computation unit may compute a detected topography from gap measurements using a dynamic filter including a model of read/write head dynamics. A sensor may detect gap measurements of a side read/write track while the read/write head is interacting with a current read/write track. A memory may store the detected topography. The control mechanism may adjust the height of the read/write head based on the detected and/or stored topography. The control mechanism may be a reactionless control mechanism configured to apply a counterforce to offset movements of the read/write head and/or a slider.
摘要翻译：控制机构可以控制配置成与旋转信息存储表面相互作用的读/写头的高度和/或位置。计算单元可以使用包括读/写头动态模型的动态滤波器从间隙测量中计算检测到的形貌。传感器可以在读/写磁头正在与当前读/写磁道进行交互时检测侧读/写磁道的间隙测量。存储器可以存储检测到的形貌。控制机构可以基于检测到的和/或存储的地形来调整读/写头的高度。控制机构可以是被配置为对读/写头和/或滑块的偏移运动施加反作用力的无反应控制机构。

25. 发明授权

US09076473B1 Data storage device detecting fly height instability of head during load operation based on microactuator response 有权
标题翻译：数据存储装置根据微型制动器响应，检测负载运行时头部的飞高不稳定性
公开(公告)号：US09076473B1
公开(公告)日：2015-07-07
申请号：US14457425
申请日：2014-08-12
申请人： Western Digital Technologies, Inc.
发明人： Yanning Liu , Xin Wang , Jianghong Ding , Dean V. Dang , Jong Hyun Lee , Duc T. Phan , Timothy A. Ferris
IPC分类号： G11B21/02 , G11B27/36 , G11B5/60 , G11B5/54
CPC分类号： G11B5/6011 , G11B5/6058 , G11B5/6076
摘要： A data storage device is disclosed comprising a first disk surface, a first head, and a first microactuator configured to actuate the first head over the first disk surface. The first microactuator is configured into a first sensor, and a first load operation is executed to load the first head over the first disk surface. A fly height instability of the first head is detected during the first load operation based on a first sensor signal generated by the first microactuator.
摘要翻译：公开了一种数据存储装置，包括第一盘表面，第一头和第一微致动器，其构造成在第一盘表面上致动第一头。第一微型致动器被配置成第一传感器，并且执行第一加载操作以将第一头部装载在第一盘表面上。基于由第一微致动器产生的第一传感器信号，在第一加载操作期间检测第一头的飞高不稳定性。

26. 发明授权

US09053730B1 Disk drive comprising extended range head proximity sensor 有权
标题翻译：磁盘驱动器包括扩展距离头部接近传感器
公开(公告)号：US09053730B1
公开(公告)日：2015-06-09
申请号：US14185909
申请日：2014-02-20
申请人： Western Digital Technologies, Inc.
发明人： Dennis W. Hogg
IPC分类号： G11B21/02 , G11B5/60
CPC分类号： G11B5/6076 , G11B5/6011
摘要： A disk drive is disclosed comprising a head actuated over a disk, and a fly height transducer operable to generate a fly height signal for the head. The disk drive further comprises control circuitry comprising a current sensor operable to detect a current flowing through the fly height transducer. The current sensor comprises a differential amplifier operable to amplify the current flowing through the fly height transducer over a first range using a first gain, and amplify the current flowing through the fly height transducer over a second range using a second gain less than the first gain, wherein at least part of the second range is different than the first range.
摘要翻译：公开了一种磁盘驱动器，其包括在磁盘上致动的磁头，以及用于产生磁头的飞行高度信号的飞行高度传感器。磁盘驱动器还包括控制电路，其包括可操作以检测流过飞高传感器的电流的电流传感器。电流传感器包括差分放大器，其可操作以使用第一增益在第一范围上放大流过飞高传感器的电流，并且使用小于第一增益的第二增益在第二范围上放大流过飞高传感器的电流，其中所述第二范围的至少一部分不同于所述第一范围。

27. 发明授权

US09053725B1 High-speed recording disk defect detection 有权
标题翻译：高速记录磁盘缺陷检测
公开(公告)号：US09053725B1
公开(公告)日：2015-06-09
申请号：US14468164
申请日：2014-08-25
申请人： HGST Netherlands B.V.
发明人： Yuichiro Sano , Junguo Xu , Yuka Morimoto
IPC分类号： G11B5/55 , G11B5/60
CPC分类号： G11B5/5552 , G11B5/5547 , G11B5/6076 , G11B19/041 , G11B19/048 , G11B20/1883 , G11B20/1889
摘要： A hard disk drive electronic component processes a signal from a piezoelectric actuator to identify where on a disk the slider encounters a disk defect. The signal received from the piezoelectric actuator may be based on the mechanical propagation, through the suspension to the piezoelectric actuator, of an effect of slider contact with the protrusion. Further, an actuator may be commanded to systematically move the head slider across the writeable portion of the disk to map all the protrusions on the writeable portion of the disk.
摘要翻译：硬盘驱动器电子部件处理来自压电致动器的信号以识别滑块遇到磁盘缺陷的磁盘。从压电致动器接收的信号可以基于通过悬架到压电致动器的机械传播，其具有与突起的滑动接触的效果。此外，可以命令致动器系统地将磁头滑动器跨过磁盘的可写入部分来映射磁盘的可写入部分上的所有突起。

28. 发明授权

US09047898B2 Head-medium contact detection using introduced heat oscillation 有权
标题翻译：使用引入热振荡的头 - 介质接触检测
公开(公告)号：US09047898B2
公开(公告)日：2015-06-02
申请号：US14165906
申请日：2014-01-28
申请人： Seagate Technology LLC
发明人： Dongming Liu , Kenneth Haapala , Scott E. Ryun , Lin Zhou
IPC分类号： G11B5/02 , G11B5/58 , G11B5/60
CPC分类号： G11B5/581 , G11B5/607 , G11B5/6076
摘要： An apparatus includes a head transducer configured to interact with a magnetic recording medium and a heater configured to thermally actuate the head transducer. A thermal sensor at or near the head transducer is configured to produce a sensor signal. Circuitry is coupled to the heater and configured to cause an oscillation in heater power. The heater power oscillation causes an oscillation in the sensor signal. A detector is coupled to the thermal sensor and configured to detect head-medium contact using the oscillating sensor signal and heater power.
摘要翻译：一种装置包括：头部换能器，被配置为与磁记录介质相互作用;以及加热器，其被配置为热致动头部换能器。在头部传感器处或附近的热传感器被配置成产生传感器信号。电路耦合到加热器并且被配置为引起加热器功率的振荡。加热器功率振荡导致传感器信号的振荡。检测器耦合到热传感器并且被配置为使用振荡传感器信号和加热器功率检测头 - 介质接触。

29. 发明授权

US09042050B2 Head transducer with multiple resistance temperature sensors for head-medium spacing and contact detection 有权
公开(公告)号：US09042050B2
公开(公告)日：2015-05-26
申请号：US14457694
申请日：2014-08-12
申请人： Seagate Technology LLC
发明人： Michael Thomas Johnson , Dongming Liu , Huazhou Lou , Declan Macken , Timothy William Stoebe , James Gary Wessel , Xuan Zheng
IPC分类号： G11B21/02 , G11B20/10 , G11B5/60
CPC分类号： G11B5/607 , G01K13/00 , G11B5/024 , G11B5/3133 , G11B5/6011 , G11B5/6076 , G11B7/0948 , G11B7/121 , G11B20/10 , G11B27/36
摘要： A head transducer, configured to interact with a magnetic recording medium, includes a first sensor having a temperature coefficient of resistance (TCR) and configured to produce a first sensor signal, and a second sensor having a TCR and configured to produce a second sensor signal. One of the first and second sensors is situated at or near a close point of the head transducer in relation to the magnetic recording medium, and the other of the first and second sensors spaced away from the close point. Circuitry is configured to combine the first and second sensor signals and produce a combined sensor signal indicative of one or both of a change in head-medium spacing and head-medium contact. Each of the sensors may have a TCR with the same sign (positive or negative) or each sensor may have a TCR with a different sign.

30. 发明申请

US20150103432A1 METHODS AND DEVICES FOR HEAD-MEDIA CONTACT DETECTION 有权
标题翻译：用于头 - 媒体接触检测的方法和装置
公开(公告)号：US20150103432A1
公开(公告)日：2015-04-16
申请号：US14050526
申请日：2013-10-10
申请人： Seagate Technology LLC
发明人： Huazhou Lou , Lin Zhou , Vincent Engelkes
IPC分类号： G11B21/12 , G11B5/48
CPC分类号： G11B5/6076 , G11B5/012 , G11B5/4826 , G11B5/6011
摘要： In certain embodiments, a head-suspension assembly includes a resonator attached to either a head or gimbal. The resonator is configured to resonate at a predefined resonant frequency. In certain embodiments, disc drives includes a recording medium, a head-suspension assembly, and a resonator. The resonator is attached to either a head or gimbal of the head-suspension assembly. The resonator is configured to resonate at a predefined resonant frequency.
摘要翻译：在某些实施例中，头悬挂组件包括附接到头部或万向节的谐振器。谐振器被配置为以预定的谐振频率谐振。在某些实施例中，盘驱动器包括记录介质，磁头 - 悬架组件和谐振器。谐振器连接到头悬挂组件的头部或万向节。谐振器被配置为以预定的谐振频率谐振。

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