-
1.发明授权公开(公告)号：US11495249B1
公开(公告)日：2022-11-08
申请号：US17227958
申请日：2021-04-12
发明人： Ian James Gilbert , Peng Peng , Todd Michael Lammers , Tim Rausch
摘要： Two or more different recording currents are applied to a write coil of a recording head. A first of the two or more currents is a positive current and a second of the two or more currents is a negative current. In response to the application of the two or more different recording currents, a data stream is recorded to regions of a moving continuous magnetic recording medium such that each region has three or more magnetic states. The three or more magnetic states can be read from the continuous magnetic recording medium via a magnetic read transducer to recover the data stream.
-
2.发明授权公开(公告)号：US11270733B2
公开(公告)日：2022-03-08
申请号：US17323474
申请日：2021-05-18
发明人： Ian James Gilbert , Peng Peng , Tim Rausch , Jan-Ulrich Thiele
IPC分类号： G11B11/105 , G11B20/10 , G11B5/73 , G11B20/18 , G11B5/00 , G11B7/126 , G11B7/1263 , G11B7/1267
摘要： A disk drive apparatus determines a pattern of bits of a data signal applied to a magnetic write transducer of a heat-assisted magnetic recording apparatus. The magnetic write transducer applies a magnetic field to a recording medium in response to the data signal. A laser power signal is applied to a laser that heats the recording medium while the magnetic field is applied. The laser power signal is modulated based on the pattern of bits. The modulation reduces differences between track widths of recorded marks having different elapsed time values and/or increases a signal-to-noise ratio of the recorded marks having different elapsed time values.
-
公开(公告)号：US20150162022A1
公开(公告)日：2015-06-11
申请号：US14099035
申请日：2013-12-06
发明人： Peng Peng , Zhen Wei , Declan Macken , Darreyl Sedbrook , Muhammed Mujahid Khan
IPC分类号： G11B5/03
CPC分类号： G11B5/4866 , G11B5/02 , G11B5/3133 , G11B5/3945 , G11B5/607 , G11B5/6076
摘要： A first biasing potential is sent to a first input end of a first temperature coefficient of resistance (TCR) sensor having a first ground end coupled to a ground potential. A second biasing potential is sent to a second input end of a second TCR sensor having a second ground end coupled to the ground potential. The first and the second biasing potentials are changed to operate in a plurality of modes.
摘要翻译： 第一偏置电位被发送到具有耦合到地电位的第一接地端的第一温度系数电阻（TCR）传感器的第一输入端。 第二偏置电位被发送到具有耦合到地电位的第二接地端的第二TCR传感器的第二输入端。 第一和第二偏置电位被改变为以多种模式操作。
-
公开(公告)号：US09679598B2
公开(公告)日：2017-06-13
申请号：US14836010
申请日：2015-08-26
发明人： Peng Peng , Declan Macken , Michael Thomas Johnson , Zheying Guo
CPC分类号： G11B5/6076 , G11B5/1278 , G11B5/3133 , G11B5/3143 , G11B5/607
摘要： A writer core of a transducer is configured to interact with a magnetic recording medium and comprises an upper core and a lower core. At least one of the upper and lower cores comprises a return pole having a return shield. The apparatus also comprises a writer pole between the upper and lower cores, and a writer gap defined between the writer pole and the return shield. The apparatus further comprises a sensor element within one of the upper and lower cores that includes the writer gap. The sensor element has a temperature coefficient of resistance and is configured to sense for a change in temperature indicative of one or both of a change in spacing and contact between the transducer and the magnetic recording medium.
-
公开(公告)号：US09093084B2
公开(公告)日：2015-07-28
申请号：US14099035
申请日：2013-12-06
发明人： Peng Peng , Zhen Wei , Declan Macken , Darreyl Sedbrook , Muhammed Mujahid Khan
CPC分类号： G11B5/4866 , G11B5/02 , G11B5/3133 , G11B5/3945 , G11B5/607 , G11B5/6076
摘要： A first biasing potential is sent to a first input end of a first temperature coefficient of resistance (TCR) sensor having a first ground end coupled to a ground potential. A second biasing potential is sent to a second input end of a second TCR sensor having a second ground end coupled to the ground potential. The first and the second biasing potentials are changed to operate in a plurality of modes.
摘要翻译： 第一偏置电位被发送到具有耦合到地电位的第一接地端的第一温度系数电阻（TCR）传感器的第一输入端。 第二偏置电位被发送到具有耦合到地电位的第二接地端的第二TCR传感器的第二输入端。 第一和第二偏置电位被改变为以多种模式操作。
-
6.发明申请公开(公告)号：US20210407546A1
公开(公告)日：2021-12-30
申请号：US17323474
申请日：2021-05-18
发明人： Ian James Gilbert , Peng Peng , Tim Rausch , Jan-Ulrich Thiele
摘要： A disk drive apparatus determines a pattern of bits of a data signal applied to a magnetic write transducer of a heat-assisted magnetic recording apparatus. The magnetic write transducer applies a magnetic field to a recording medium in response to the data signal. A laser power signal is applied to a laser that heats the recording medium while the magnetic field is applied. The laser power signal is modulated based on the pattern of bits. The modulation reduces differences between track widths of recorded marks having different elapsed time values and/or increases a signal-to-noise ratio of the recorded marks having different elapsed time values.
-
公开(公告)号：US11121489B2
公开(公告)日：2021-09-14
申请号：US16545996
申请日：2019-08-20
发明人： Peng Peng , William A. Casey , Dennis L. Buster , Kerry J. Johnson , Ruth LeMon , Ronald E. Anderson
IPC分类号： H01R12/61 , H01R12/71 , H01R12/77 , H01R13/66 , H01R12/55 , H05K3/32 , H05K3/36 , H05K1/18 , H05K3/40
摘要： An electrical connector includes a flexible circuit with a flexible material and traces at least partially embedded in the flexible material. The electrical connector further includes a first set of conductive bumps, a second set of conductive bumps, and a stiffener. The first set of conductive bumps is coupled to respective first end portions of the traces and extends from a first side of the flexible circuit. The second set of conductive bumps is coupled to respective second end portions of the traces. The stiffener is coupled to the flexible circuit on a second side of the flexible circuit opposite the first side.
-
公开(公告)号：US11120826B1
公开(公告)日：2021-09-14
申请号：US17087065
申请日：2020-11-02
发明人： Michael Thomas Johnson , Peng Peng , Declan Macken
IPC分类号： G11B5/60
摘要： The present disclosure includes systems and methods for using a comparator-based, relaxation oscillator circuit to detect capacitance of a capacitor formed between a metallic feature in a read/write head and a metallic feature in a storage medium.
-
9.发明授权公开(公告)号：US09916847B1
公开(公告)日：2018-03-13
申请号：US15153103
申请日：2016-05-12
发明人： Steven Douglas Granz , Michael Thomas Johnson , Patrick Carl Fletcher , Manuel Charles Anaya-Dufresne , Peng Peng
IPC分类号： G11B11/00 , G11B5/455 , G11B5/00 , G11B7/1263 , G11B11/105 , G11B5/60 , G11B7/1267 , G11B7/126
CPC分类号： G11B5/455 , G11B5/6088 , G11B7/126 , G11B7/1263 , G11B7/1267 , G11B11/10506 , G11B11/1051 , G11B2005/0021
摘要： An apparatus comprises a thermal sensor configured to interact with a magnetic recording disk. A head-disk interface is defined between the thermal sensor and the disk. A power supply is coupled to the thermal sensor and configured to supply a bias power to the thermal sensor between a low power and a high power. A processor is coupled to the thermal sensor and configured to determine a slope of a resistance response of the thermal sensor. The processor is further configured to detect a change in the slope relative to a baseline slope. The slope change indicates increased heat sinking between the thermal sensor and the disk due to the presence of contaminant buildup at the head-disk interface.
-
10.发明申请WRITER CORE INCORPORATING THERMAL SENSOR HAVING A TEMPERATURE COEFFICIENT OF RESISTANCE 审中-公开具有温度系数电阻的热传感器的写入核心公开(公告)号：US20150364148A1
公开(公告)日：2015-12-17
申请号：US14836010
申请日：2015-08-26
发明人： Peng Peng , Declan Macken , Michael Thomas Johnson , Zheying Guo
IPC分类号： G11B5/60
CPC分类号： G11B5/6076 , G11B5/1278 , G11B5/3133 , G11B5/3143 , G11B5/607
摘要： A writer core of a transducer is configured to interact with a magnetic recording medium and comprises an upper core and a lower core. At least one of the upper and lower cores comprises a return pole having a return shield. The apparatus also comprises a writer pole between the upper and lower cores, and a writer gap defined between the writer pole and the return shield. The apparatus further comprises a sensor element within one of the upper and lower cores that includes the writer gap. The sensor element has a temperature coefficient of resistance and is configured to sense for a change in temperature indicative of one or both of a change in spacing and contact between the transducer and the magnetic recording medium.
摘要翻译： 传感器的写入器核心被配置为与磁记录介质相互作用并且包括上芯和下芯。 上芯和下芯中的至少一个包括具有返回屏蔽的返回极。 该装置还包括位于上芯和下芯之间的写极，以及限位在写杆和返挡板之间的写入器间隙。 该装置还包括在包括写入器间隙的上芯和下芯之一内的传感器元件。 传感器元件具有电阻的温度系数，并且被配置为感测指示换能器和磁记录介质之间的间隔和接触的变化中的一个或两个的温度变化。
-
-
-
-
-
-
-
-
-
搜索结果
15 条记录 (耗时 0.015 秒)
