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1. 发明授权

US08189281B2 Magnetic recording disk drive with write driver to write head transmission line having non-uniform sections for optimal write current pulse overshoot 有权
标题翻译：具有写驱动器的磁记录磁盘驱动器，其写头传输线具有不均匀的部分，用于最佳写入电流脉冲过冲
公开(公告)号：US08189281B2
公开(公告)日：2012-05-29
申请号：US12641362
申请日：2009-12-18
申请人： Michael Alex , John Thomas Contreras , Nobumasa Nishiyama
发明人： Michael Alex , John Thomas Contreras , Nobumasa Nishiyama
IPC分类号： G11B5/09 , G11B5/48
CPC分类号： G11B5/02 , G11B5/484 , G11B5/4853 , G11B5/486 , G11B2005/0002
摘要： An interconnect between the write driver and the write head in a magnetic recording disk drive enables an inherent write current overshoot. The interconnect includes an integrated lead suspension (ILS) and a short flex cable that connects the write driver circuitry to the ILS. The interconnect is a two-segment transmission line, with the first segment connected to the write driver having multiple sub-segments or sections with non-uniform impedance levels. The section of the first segment that connects to the write driver is the short flex cable and has an impedance substantially higher than the source impedance ZWD of the write driver. The multiple sections of the first segment have non-uniform impedance values that have an effective impedance Z01-eff that substantially matches ZWD. The second segment of the transmission line has an effective impedance Z02-eff that is substantially less than Z01-eff. The write lines for the +W and −W signals are preferably interleaved on the transmission line sections.
摘要翻译：磁记录盘驱动器中的写入驱动器和写入头之间的互连使得能够产生固有的写入电流过冲。互连包括集成引线悬架（ILS）和将写入驱动器电路连接到ILS的短柔性电缆。互连是双段传输线，其中第一段连接到具有不均匀阻抗水平的多个子段或部分的写驱动器。连接到写驱动器的第一段的部分是短柔性电缆，并且具有显着高于写驱动器的源阻抗ZWD的阻抗。第一段的多个部分具有不均匀的阻抗值，其具有基本上与ZWD匹配的有效阻抗Z01-eff。传输线的第二段具有实质上小于Z01-eff的有效阻抗Z02-eff。用于+ W和-W信号的写入线优选地在传输线部分上交错。

2. 发明申请

US20110149441A1 MAGNETIC RECORDING DISK DRIVE WITH WRITE DRIVER TO WRITE HEAD TRANSMISSION LINE HAVING NON-UNIFORM SECTIONS FOR OPTIMAL WRITE CURRENT PULSE OVERSHOOT 有权
标题翻译：具有写入驱动器的磁性记录盘驱动器具有非均匀部分的写入头部传输线，用于最佳写入电流脉冲过电压
公开(公告)号：US20110149441A1
公开(公告)日：2011-06-23
申请号：US12641362
申请日：2009-12-18
申请人： Michael Alex , John Thomas Contreras , Nobumasa Nishiyama
发明人： Michael Alex , John Thomas Contreras , Nobumasa Nishiyama
IPC分类号： G11B21/16
CPC分类号： G11B5/02 , G11B5/484 , G11B5/4853 , G11B5/486 , G11B2005/0002
摘要： An interconnect between the write driver and the write head in a magnetic recording disk drive enables an inherent write current overshoot. The interconnect includes an integrated lead suspension (ILS) and a short flex cable that connects the write driver circuitry to the ILS. The interconnect is a two-segment transmission line, with the first segment connected to the write driver having multiple sub-segments or sections with non-uniform impedance levels. The section of the first segment that connects to the write driver is the short flex cable and has an impedance substantially higher than the source impedance ZWD of the write driver. The multiple sections of the first segment have non-uniform impedance values that have an effective impedance Z01-eff that substantially matches ZWD. The second segment of the transmission line has an effective impedance Z02-eff that is substantially less than Z01-eff. The write lines for the +W and −W signals are preferably interleaved on the transmission line sections.
摘要翻译：磁记录盘驱动器中的写入驱动器和写入头之间的互连使得能够产生固有的写入电流过冲。互连包括集成引线悬架（ILS）和将写入驱动器电路连接到ILS的短柔性电缆。互连是双段传输线，其中第一段连接到具有不均匀阻抗水平的多个子段或部分的写驱动器。连接到写驱动器的第一段的部分是短柔性电缆，并且具有显着高于写驱动器的源阻抗ZWD的阻抗。第一段的多个部分具有不均匀的阻抗值，其具有基本上与ZWD匹配的有效阻抗Z01-eff。传输线的第二段具有实质上小于Z01-eff的有效阻抗Z02-eff。用于+ W和-W信号的写入线优选地在传输线部分上交错。

3. 发明申请

US20120008237A1 WIDE-BANDWIDTH DIELECTRIC WINDOWING FOR CONDUCTOR SUSPENSION STRUCTURE 审中-公开
标题翻译：用于导体悬挂结构的宽带宽电介质窗
公开(公告)号：US20120008237A1
公开(公告)日：2012-01-12
申请号：US12832531
申请日：2010-07-08
申请人： John Thomas Contreras , Bruce Alvin Gurney , Nobumasa Nishiyama
发明人： John Thomas Contreras , Bruce Alvin Gurney , Nobumasa Nishiyama
IPC分类号： G11B5/60
CPC分类号： G11B5/486
摘要： Approaches for a hard-disk drive suspension interconnect having a wide bandwidth. A suspension interconnect includes a substrate layer, a dielectric layer disposed on the substrate layer, and a plurality of transmission-line (TL) conductors disposed within the dielectric layer. Air gaps may be disposed around the TL conductors to minimize the tendency of the dielectric material to act as an electrical shunt, which impedes high bandwidth signal transmission. An air gap may exist in the dielectric layer between adjacent TL conductors. Additionally, the area adjacent to the plurality of TL conductors, along the direction of signal travel, may alternate between dielectric material and air gaps. Indeed, there need not be any solid material enclosing the TL conductors save for a plurality of dielectric cross ties that provide structural support thereto. The substrate layer may also comprise one or more air gaps underneath a portion of the plurality of TL conductors.
摘要翻译：具有宽带宽的硬盘驱动器悬挂互连的方法。悬置互连件包括衬底层，设置在衬底层上的电介质层和布置在电介质层内的多个传输线（TL）导体。可以在TL导体周围设置空气间隙，以最小化电介质材料作为电分流的趋势，这阻碍了高带宽信号传输。相邻TL导体之间的电介质层中可能存在气隙。此外，沿着信号行进方向与多个TL导体相邻的区域可以在介电材料和气隙之间交替。实际上，除了为其提供结构支撑的多个介电交叉连接件之外，不需要包围TL导体的任何固体材料。衬底层还可以包括在多个TL导体的一部分下方的一个或多个气隙。

4. 发明授权

US07489479B2 Electrical lead suspension having partitioned air slots 有权
标题翻译：具有分隔空气槽的电气引线悬架
公开(公告)号：US07489479B2
公开(公告)日：2009-02-10
申请号：US11037906
申请日：2005-01-18
申请人： Satya Prakash Arya , John Thomas Contreras , Klaas Klaassen , Nobumasa Nishiyama
发明人： Satya Prakash Arya , John Thomas Contreras , Klaas Klaassen , Nobumasa Nishiyama
IPC分类号： G11B5/48
CPC分类号： H05K1/0224 , G11B5/486 , H05K1/0253 , H05K1/056 , H05K2201/09681
摘要： An electrical lead suspension (ELS) having partitioned air slots. The ELS includes a laminate. A first plurality of signal traces and a second plurality of traces are in a first formed layer of the laminate. The second plurality of traces may be signal traces or power traces. The laminate has a dielectric layer between the first formed layer and a second formed layer. A plurality of partitioned air slots is in the second formed layer of the laminate. The portion of the ELS having a plurality of partitioned air slots supporting the at least the first plurality of signal traces and the portion of the ELS having a second plurality of partitioned air slots or patterns supporting the second plurality of traces. The supporting of the first plurality of signal traces separate from the second plurality of traces reduces write-to-read cross talk and signal loss. Offsetting the first plurality of air slots from second plurality of air slots further reduces cross talk and signal loss and restores some of the structural rigidity lost due to in line (e.g., aligned) slots.
摘要翻译：具有分隔空气槽的电引线悬架（ELS）。 ELS包括层压板。第一多个信号迹线和第二多个迹线位于层叠体的第一成形层中。第二多个迹线可以是信号迹线或功率迹线。层压体在第一成形层和第二成形层之间具有介电层。多个分隔的空气槽位于层叠体的第二成形层中。 ELS的部分具有支撑至少第一多个信号迹线的多个分隔的空气槽，并且ELS的部分具有支撑第二多个迹线的第二多个分隔的空气槽或图案。与第二多个迹线分离的第一多个信号迹线的支持降低了写入 - 读取串扰和信号丢失。从第二多个空气槽中偏移第一组多个空气槽进一步减少串扰和信号损失，并且恢复由于在线（例如对准的）槽而损失的一些结构刚度。

5. 发明授权

US07352535B2 Method and apparatus for reducing crosstalk and signal loss in flexing interconnects of an electrical lead suspension 有权
标题翻译：用于减少电引线悬架的弯曲互连中的串扰和信号损失的方法和装置
公开(公告)号：US07352535B2
公开(公告)日：2008-04-01
申请号：US11035429
申请日：2005-01-13
申请人： Satya Prakash Arya , John Thomas Contreras , Klaas Berend Klaassen , Nobumasa Nishiyama
发明人： Satya Prakash Arya , John Thomas Contreras , Klaas Berend Klaassen , Nobumasa Nishiyama
IPC分类号： G11B5/54
CPC分类号： H05K1/0253 , G11B5/484 , G11B5/486 , H05K1/0393 , H05K1/056 , H05K2201/09263
摘要： A method and apparatus for reducing crosstalk and signal loss in an electrical interconnect is disclosed. The electrical interconnect includes a laminate. A plurality of signal traces and a subsequent plurality of traces are in a first formed layer of the laminate. The subsequent plurality of traces may be signal traces or power traces. The laminate has a dielectric layer between the first formed layer and a second formed layer. A plurality of serpentine patterns are in the second formed layer of the laminate. The plurality of serpentine patterns is separated from subsequent patterns. The plurality of serpentine patterns supports the plurality of signal traces and the subsequent plurality of patterns supports the subsequent plurality of traces. The supporting of the plurality of signal traces separate from the subsequent plurality of traces reduces write-to-read crosstalk and signal loss.
摘要翻译：公开了用于减少电互连中的串扰和信号损耗的方法和装置。电互连包括层压板。多个信号迹线和随后的多个迹线位于层叠体的第一成形层中。随后的多个迹线可以是信号迹线或功率迹线。层压体在第一成形层和第二成形层之间具有介电层。多个蛇形图案位于层压板的第二成形层中。多个蛇形图案与随后的图案分离。多个蛇形图案支持多个信号迹线，随后的多个图案支持随后的多个迹线。与随后的多个迹线分离的多个信号迹线的支持降低了写入 - 读取串扰和信号丢失。

6. 发明授权

US08116031B2 Perpendicular magnetic recording system with helical write coil and auxiliary coil for fast switching of write pole magnetization 有权
标题翻译：具有螺旋写入线圈和辅助线圈的垂直磁记录系统，用于快速切换写磁极磁化
公开(公告)号：US08116031B2
公开(公告)日：2012-02-14
申请号：US12419278
申请日：2009-04-06
申请人： Michael Alex , John Thomas Contreras , Manfred Ernst Schabes , Xinzhi Xing
发明人： Michael Alex , John Thomas Contreras , Manfred Ernst Schabes , Xinzhi Xing
IPC分类号： G11B5/17
CPC分类号： G11B5/3123 , G11B5/1278 , G11B2005/001
摘要： A perpendicular magnetic recording system has a write head having a main helical coil (the write coil) and main pole (the write pole) that directs write flux in a direction perpendicular to the recording layer in the magnetic recording medium, and an auxiliary coil and auxiliary pole that injects magnetic flux into the write pole at an angle to the primary or perpendicular axis of the write pole. The auxiliary coil is preferably a helical coil wrapped around the auxiliary pole. The additional flux from the auxiliary pole, which is injected non-parallel to the primary magnetization of the write pole, exerts a relatively large torque on the magnetization of the write pole, thereby facilitating magnetization reversal of the write pole. Electrical circuitry is connected to the main coil and the auxiliary coil to generate the auxiliary flux simultaneous with the switching of the magnetization of the write pole.
摘要翻译：垂直磁记录系统具有写磁头，该写头具有主磁螺旋线圈（写线圈）和主磁极（写磁极），其在与磁记录介质中的记录层垂直的方向上引导写磁通，辅助线圈和辅助极以与写极的主轴或垂直轴成一定角度注入磁极。辅助线圈优选为缠绕在辅助极上的螺旋线圈。来自辅助极的不平行于写入磁极的一次磁化的附加磁通对写入磁极的磁化施加相对较大的转矩，从而促进写入极的磁化反转。电路连接到主线圈和辅助线圈，以与写入极的磁化转换同时产生辅助通量。

7. 发明申请

US20100254041A1 PERPENDICULAR MAGNETIC RECORDING SYSTEM WITH HELICAL WRITE COIL AND AUXILIARY COIL FOR FAST SWITCHING OF WRITE POLE MAGNETIZATION 有权
标题翻译：具有螺旋线圈和辅助线圈的永磁磁记录系统，用于快速切换写入磁场
公开(公告)号：US20100254041A1
公开(公告)日：2010-10-07
申请号：US12419278
申请日：2009-04-06
申请人： Michael Alex , John Thomas Contreras , Manfred Ernst Schabes , Xinzhi Xing
发明人： Michael Alex , John Thomas Contreras , Manfred Ernst Schabes , Xinzhi Xing
IPC分类号： G11B5/17
CPC分类号： G11B5/3123 , G11B5/1278 , G11B2005/001
摘要： A perpendicular magnetic recording system has a write head having a main helical coil (the write coil) and main pole (the write pole) that directs write flux in a direction perpendicular to the recording layer in the magnetic recording medium, and an auxiliary coil and auxiliary pole that injects magnetic flux into the write pole at an angle to the primary or perpendicular axis of the write pole. The auxiliary coil is preferably a helical coil wrapped around the auxiliary pole. The additional flux from the auxiliary pole, which is injected non-parallel to the primary magnetization of the write pole, exerts a relatively large torque on the magnetization of the write pole, thereby facilitating magnetization reversal of the write pole. Electrical circuitry is connected to the main coil and the auxiliary coil to generate the auxiliary flux simultaneous with the switching of the magnetization of the write pole.
摘要翻译：垂直磁记录系统具有写磁头，该写头具有主磁螺旋线圈（写线圈）和主磁极（写磁极），其在与磁记录介质中的记录层垂直的方向上引导写磁通，辅助线圈和辅助极以与写极的主轴或垂直轴成一定角度注入磁极。辅助线圈优选为缠绕在辅助极上的螺旋线圈。来自辅助极的不平行于写入磁极的一次磁化的附加磁通对写入磁极的磁化施加相对较大的转矩，从而促进写入极的磁化反转。电路连接到主线圈和辅助线圈，以与写入极的磁化转换同时产生辅助通量。

8. 发明授权

US08446690B2 Perpendicular magnetic recording write head with spin torque oscillator for fast switching of write pole magnetization 有权
标题翻译：垂直磁记录写头具有自旋转矩振荡器，可快速切换写磁极磁化
公开(公告)号：US08446690B2
公开(公告)日：2013-05-21
申请号：US12542677
申请日：2009-08-17
申请人： Michael Alex , John Thomas Contreras , Manfred Ernst Schabes , Xinzhi Xing
发明人： Michael Alex , John Thomas Contreras , Manfred Ernst Schabes , Xinzhi Xing
IPC分类号： G11B5/17
CPC分类号： G11B5/314 , G11B5/02 , G11B5/1278 , G11B5/3146 , G11B2005/0005
摘要： A perpendicular magnetic recording write head that a write pole, an electrically conductive coil coupled to the write pole for generating magnetic flux in the write pole in the presence of electrical write current, and a spin torque oscillator (STO) that injects auxiliary magnetic flux to the write pole in a direction generally orthogonal to the write pole to facilitate magnetization switching of the write pole. The STO comprises a stack of layers including electrodes, a pinned ferromagnetic layer having a fixed, a free ferromagnetic layer having a magnetization free to rotate, and a nonmagnetic spacer layer between the pinned and free layers. The free layer may be oriented either substantially orthogonal to the write pole or substantially parallel to the write pole, in which latter embodiment a flux guide may be located between the free layer and the write pole for directing the auxiliary magnetic flux from the free layer to the write pole.
摘要翻译：垂直磁记录写头具有写极，耦合到写极的导电线圈，用于在存在写写电流的情况下在写极中产生磁通;以及自旋扭矩振荡器（STO），其将辅助磁通量注入到写磁极在与写磁极大致垂直的方向上，以方便写磁极的磁化切换。 STO包括一叠层，包括电极，具有固定磁化的钉扎铁磁层，具有自由旋转的磁化的自由铁磁层和在被钉扎层和自由层之间的非磁性间隔层。自由层可以取向为大致正交于写极或基本上平行于写极，其中后一实施例中的磁通引导件可以位于自由层和写极之间，用于将辅助磁通从自由层引导到写柱。

9. 发明申请

US20110038080A1 PERPENDICULAR MAGNETIC RECORDING WRITE HEAD WITH SPIN TORQUE OSCILLATOR FOR FAST SWITCHING OF WRITE POLE MAGNETIZATION 有权
标题翻译：具有旋转扭矩振荡器的磁性记录磁头，用于快速切换写入磁场
公开(公告)号：US20110038080A1
公开(公告)日：2011-02-17
申请号：US12542677
申请日：2009-08-17
申请人： Michael Alex , John Thomas Contreras , Manfred Ernst Schabes , Xinzhi Xing
发明人： Michael Alex , John Thomas Contreras , Manfred Ernst Schabes , Xinzhi Xing
IPC分类号： G11B5/17 , G11B5/127
CPC分类号： G11B5/314 , G11B5/02 , G11B5/1278 , G11B5/3146 , G11B2005/0005
摘要： A perpendicular magnetic recording write head that a write pole, an electrically conductive coil coupled to the write pole for generating magnetic flux in the write pole in the presence of electrical write current, and a spin torque oscillator (STO) that injects auxiliary magnetic flux to the write pole in a direction generally orthogonal to the write pole to facilitate magnetization switching of the write pole. The STO comprises a stack of layers including electrodes, a pinned ferromagnetic layer having a fixed, a free ferromagnetic layer having a magnetization free to rotate, and a nonmagnetic spacer layer between the pinned and free layers. The free layer may be oriented either substantially orthogonal to the write pole or substantially parallel to the write pole, in which latter embodiment a flux guide may be located between the free layer and the write pole for directing the auxiliary magnetic flux from the free layer to the write pole.
摘要翻译：垂直磁记录写头具有写极，耦合到写极的导电线圈，用于在存在写写电流的情况下在写极中产生磁通;以及自旋扭矩振荡器（STO），其将辅助磁通量注入到写磁极在与写磁极大致垂直的方向上，以方便写磁极的磁化切换。 STO包括一叠层，包括电极，具有固定磁化的钉扎铁磁层，具有自由旋转的磁化的自由铁磁层和在被钉扎层和自由层之间的非磁性间隔层。自由层可以取向为大致正交于写极或基本上平行于写极，其中后一实施例中的磁通引导件可以位于自由层和写极之间，用于将辅助磁通从自由层引导到写柱。

10. 发明授权

US08139319B2 Perpendicular magnetic recording system with magnetic precession for fast switching of perpendicular write pole magnetization 有权
标题翻译：具有磁性进动的垂直磁记录系统，用于快速切换垂直写磁极磁化
公开(公告)号：US08139319B2
公开(公告)日：2012-03-20
申请号：US12391242
申请日：2009-02-23
申请人： John Thomas Contreras , Yimin Hsu , Manfred Ernst Schabes , Xinzhi Xing
发明人： John Thomas Contreras , Yimin Hsu , Manfred Ernst Schabes , Xinzhi Xing
IPC分类号： G11B5/127
CPC分类号： G11B5/3123 , G11B5/02 , G11B5/1278 , G11B2005/0005
摘要： A perpendicular magnetic recording system has a write head with a main perpendicular write pole connected to a yoke with first and second electrical coils. The first coil is wrapped around the yoke on one side of the main pole, and the second coil is wrapped around the yoke on the other side of the main pole. The first end of each coil is connected to a respective terminal. The second ends of the two coils are connected together and connected to a common terminal. A lead-time circuit is connected between the common terminal and the first end of one of the coils. Immediately after the direction of write current is switched by the write driver, the lead-time circuit causes the current in one of the coils to lead the current in the other coil. The current displacement between the two coils creates a precession of the magnetic flux reversal, thereby reducing the switching time of the write head.
摘要翻译：垂直磁记录系统具有写头，其具有与第一和第二电线圈的轭连接的主垂直写极。第一线圈缠绕在主极的一侧上的轭架上，并且第二线圈缠绕在主极的另一侧上的轭。每个线圈的第一端连接到相应的端子。两个线圈的第二端连接在一起并连接到公共端子。在公共端子和一个线圈的第一端之间连接有引线时间电路。在写入驱动器切换写入电流的方向之后，引线时间电路使一个线圈中的电流导致另一个线圈中的电流。两个线圈之间的电流位移产生了磁通反转的进动，从而减小了写入头的切换时间。

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