公开(公告)号：US08300360B2

公开(公告)日：2012-10-30

申请号：US12120176

申请日：2008-05-13

Applicant: Zvonimir Z. Bandic ,  Jia-Yang Juang ,  Bernhard E. Knigge ,  Robert N. Payne

Inventor： Zvonimir Z. Bandic ,  Jia-Yang Juang ,  Bernhard E. Knigge ,  Robert N. Payne

IPC: G11B5/147

CPC classification number: G11B5/6005

Abstract: A compliant, flexible air bearing slider (ABS) reduces the contact forces between the slider and disk, thereby reducing excessive burnishing and wear and increasing the reliability of the slider. According to an embodiment, an ABS has at least one “compliance-enhancing feature” which reduces the bending mode vibration frequency of the slider. By causing the slider to flex, and bringing the bending mode vibration frequency closer to the pitch 2 eigenmode frequency, coupling of the different vibration modes can be obtained. Thus, the different vibration modes can effectively dampen each other and result in reduced contact forces between the slider and disk.

Abstract translation: 兼容柔性的空气轴承滑块（ABS）可减少滑块和圆盘之间的接触力，从而减少过度抛光和磨损，并提高滑块的可靠性。 根据实施例，ABS具有至少一个柔顺增强特征，其减少滑块的弯曲模式振动频率。 通过使滑块弯曲，并使弯曲模式振动频率更接近于本征模式频率，可以获得不同振动模式的耦合。 因此，不同的振动模式可以有效地相互阻尼并且导致滑块和盘之间的接触力减小。

公开(公告)号：US08014096B2

公开(公告)日：2011-09-06

申请号：US12404254

申请日：2009-03-13

Applicant: Lidu Huang ,  Fu-ying Huang ,  Jia-Yang Juang ,  Byron Lengsfield

Inventor： Lidu Huang ,  Fu-ying Huang ,  Jia-Yang Juang ,  Byron Lengsfield

IPC: G11B5/02

CPC classification number: G11B5/0245 ,  G11B2005/0021

Abstract: A combined bulk thermal-assister and bulk eraser. The bulk thermal-assister is configured to produce a temperature in a magnetic-recording disk in a hard-disk drive when the hard-disk drive is disposed in the bulk eraser. The temperature is about equal to a second temperature greater than a first temperature of the magnetic-recording disk. The bulk eraser is configured to erase recorded information from the magnetic-recording disk at the second temperature. The second temperature lowers a coercivity of the magnetic-recording disk so that, when recorded information is erased from the magnetic-recording disk at the second temperature, recorded information on the magnetic-recording disk is erased from a second magnetic-recording track in closer proximity to an inside diameter of the magnetic-recording disk than a first magnetic-recording track from which recorded information on the magnetic-recording disk may be erased, if recorded information were erased from the magnetic-recording disk at the first temperature.

Abstract translation: 组合散热助焊剂和批量橡皮擦。 批量散热器被配置为当硬盘驱动器设置在批量擦除器中时在硬盘驱动器中的磁记录盘中产生温度。 温度大约等于大于磁记录盘的第一温度的第二温度。 批量擦除器被配置为在第二温度下擦除来自磁记录盘的记录信息。 第二温度降低磁记录盘的矫顽力，使得当在第二温度下从磁记录盘擦除记录信息时，磁记录盘上的记录信息从更接近的第二磁记录磁道擦除 接近磁记录盘的内径比第一磁记录轨道高，如果在第一温度下从磁记录盘擦除了记录信息，则磁记录盘上的记录信息可被擦除。

公开(公告)号：US20090059410A1

公开(公告)日：2009-03-05

申请号：US11899003

申请日：2007-08-30

Applicant: Bernhard Knigge ,  Jia-Yang Juang ,  Erhard Schreck

Inventor： Bernhard Knigge ,  Jia-Yang Juang ,  Erhard Schreck

IPC: G11B5/02

CPC classification number: G11B5/3136 ,  G11B5/607 ,  G11B2005/001 ,  G11B2005/0021

Abstract: In a method for writing data to a disk drive, a selected portion of a surface of a rotating disk of the disk drive is contacted with a designated contact region of a slider. An aspect of the contact is controlled to regulate frictional heating of the selected portion such that a magnetic field required to write data to the selected portion is reduced to a level which permits writing of data in the selected portion. Data is written on a frictionally heated track in the selected portion.

公开(公告)号：US20130028059A1

公开(公告)日：2013-01-31

申请号：US13190410

申请日：2011-07-25

Applicant: Fu-Ying Huang ,  Jia-Yang Juang ,  Hai J. Rosen ,  Barry Cushing Stipe ,  Timothy Carl Strand ,  Petrus Antonius VanDerHeijden

Inventor： Fu-Ying Huang ,  Jia-Yang Juang ,  Hai J. Rosen ,  Barry Cushing Stipe ,  Timothy Carl Strand ,  Petrus Antonius VanDerHeijden

IPC: G11B13/04

CPC classification number: G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A thermally-assisted recording (TAR) disk drive uses “shingled” recording and a rectangular waveguide as a “wide-area” heat source. The waveguide generates a generally elliptically-shaped optical spot that heats an area of the recording layer extending across multiple data tracks. The waveguide core has an aspect ratio (cross-track width to along-the track thickness) that achieves the desired size of the heated area while locating the peak optical intensity close to the trailing edge of the write pole tip where writing occurs. The large cross-track width of the waveguide core increases the volume of recording layer heated by the optical spot, which reduces the rate of cooling. This moves the peak temperature point of the heated area closer to the write pole tip and reduces the temperature drop between the peak temperature and the temperature at the trailing edge of the write pole tip where writing occurs.

Abstract translation: 热辅助记录（TAR）磁盘驱动器使用带状闪烁的记录和矩形波导作为广域热源。 波导产生大致椭圆形的光点，其加热跨越多个数据轨道的记录层的区域。 波导芯具有实现加热区域的期望尺寸的纵横比（沿轨道厚度的横越轨道宽度），同时将峰值光强度定位在写入发生时写入磁极尖端的后缘附近。 波导芯的大的横向轨道宽度增加了由光点加热的记录层的体积，这降低了冷却速度。 这使得加热区域的峰值温度点更接近写极端，并且降低峰值温度与写入磁极尖端的后缘处的温度之间的温度下降。

公开(公告)号：US20120250178A1

公开(公告)日：2012-10-04

申请号：US13077797

申请日：2011-03-31

Applicant: Toshiki Hirano ,  Fu-Ying Huang ,  Jia-Yang Juang ,  Hal J. Rosen ,  Barry C. Stipe

Inventor： Toshiki Hirano ,  Fu-Ying Huang ,  Jia-Yang Juang ,  Hal J. Rosen ,  Barry C. Stipe

IPC: G11B5/02 ,  G11B5/673 ,  G11B5/66

CPC classification number: G11B5/66 ,  G11B5/7325 ,  G11B5/82

Abstract: A magnetic media for heat assisted magnetic data recording. The magnetic media includes a thermal insulation layer structure formed near the substrate of the media provide more efficient heating of the write layer by allowing less heat dissipation to the substrate. The thermal insulation layer structure can be one or more layers of an oxide such as SiO2 and one or more layers of a material such as NiTa. Increasing the number of oxide layers and NiTa layers increases the thermal insulation of the thermal insulation layer structure thereby further increasing the efficiency of the heat assisted writing.

Abstract translation: 用于热辅助磁数据记录的磁介质。 磁介质包括在介质的衬底附近形成的绝热层结构，通过允许对衬底的较少散热来提供写入层的更有效的加热。 绝热层结构可以是一层或多层氧化物如SiO 2和一层或多层诸如NiTa的材料。 增加氧化物层和NiTa层的数量增加了绝热层结构的热绝缘性，从而进一步提高了热辅助写入的效率。

公开(公告)号：US20120063026A1

公开(公告)日：2012-03-15

申请号：US12881017

申请日：2010-09-13

Applicant: Jia -Yang Juang ,  Fu-Ying Huang ,  Takashi Tomita

Inventor： Jia -Yang Juang ,  Fu-Ying Huang ,  Takashi Tomita

IPC: G11B21/02 ,  G06F1/16

CPC classification number: G11B25/043 ,  G11B33/025

Abstract: Approaches for a hard-disk drive (HDD) baseplate comprising a recessed region that provides additional clearance for a disk. The protective enclosure of the HDD comprises a baseplate. The surface of the baseplate, which opposes a magnetic-recording disk, comprises a recessed region near the outer diameter (OD) of the magnetic-recording disk. The recessed region prevents the disk from being damaged through inadvertent physical contact with the baseplate, which may arise when the HDD receives a mechanical shock. The recessed region may be designed to minimize the damage to the disk if physical contact between the disk and the baseplate does occur. The recessed region may have a variety of shapes, such as a circular indentation or one or more non-contiguous regions in the baseplate where physical contact between the disk and the baseplate is deemed likely to occur.

Abstract translation: 硬盘驱动器（HDD）基板的方法包括为磁盘提供额外间隙的凹陷区域。 HDD的保护外壳包括底板。 基板的与磁记录盘相对的表面包括靠近磁记录盘的外径（OD）的凹陷区域。 凹陷区域通过与基板的无意物理接触来防止盘损坏，这在HDD接收到机械冲击时可能发生。 凹陷区域可以被设计成使得当盘和基板之间的物理接触确实发生时对盘的损坏最小化。 凹陷区域可以具有各种形状，例如基底板中的圆形凹陷或一个或多个非连续区域，其中认为盘和基板之间的物理接触可能发生。

公开(公告)号：US20090225464A1

公开(公告)日：2009-09-10

申请号：US12042230

申请日：2008-03-04

Applicant: Jia-Yang Juang ,  Timothy C. Reiley ,  Timothy C. Strand

Inventor： Jia-Yang Juang ,  Timothy C. Reiley ,  Timothy C. Strand

IPC: G11B13/04 ,  G11B5/00 ,  G11B13/00

CPC classification number: G11B5/40 ,  G11B5/314 ,  G11B5/455 ,  G11B5/6064 ,  G11B5/607 ,  G11B2005/0005 ,  G11B2005/0021

Abstract: An apparatus, system, and method for measuring thermally induced electric resistance changes in thermally assisted magnetic recording are disclosed for monitoring laser light output in thermally assisted magnetic recording disk drives. An electrical lead is coupled to a read/write head element. A first electrical resistance in the read/write head element is measured. The read/write head is heated by a laser and a second electrical resistance in the read/write head element is measured. The electrical resistance may be monitored at regular intervals when the read/write head element is on the ramp or the electrical resistance measurements may be continuously monitored as the read/write head flies over the magnetic media.

Abstract translation: 公开了一种用于测量热辅助磁记录中的热感应电阻变化的装置，系统和方法，用于监测热辅助磁记录盘驱动器中的激光输出。 电引线耦合到读/写头元件。 测量读/写头元件中的第一电阻。 读/写头被激光加热，并且测量读/写头元件中的第二电阻。 当读/写头元件在斜坡上时，可以以规则的间隔监视电阻，或者当读/写头飞越磁介质时可以连续监视电阻测量。

公开(公告)号：US08416646B2

公开(公告)日：2013-04-09

申请号：US13190410

申请日：2011-07-25

Applicant: Fu-Ying Huang ,  Jia-Yang Juang ,  Hal J. Rosen ,  Barry Cushing Stipe ,  Timothy Carl Strand ,  Petrus Antonius VanDerHeijden

Inventor： Fu-Ying Huang ,  Jia-Yang Juang ,  Hal J. Rosen ,  Barry Cushing Stipe ,  Timothy Carl Strand ,  Petrus Antonius VanDerHeijden

IPC: G11B11/00

CPC classification number: G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A thermally-assisted recording (TAR) disk drive uses “shingled” recording and a rectangular waveguide as a “wide-area” heat source. The waveguide generates a generally elliptically-shaped optical spot that heats an area of the recording layer extending across multiple data tracks. The waveguide core has an aspect ratio (cross-track width to along-the track thickness) that achieves the desired size of the heated area while locating the peak optical intensity close to the trailing edge of the write pole tip where writing occurs. The large cross-track width of the waveguide core increases the volume of recording layer heated by the optical spot, which reduces the rate of cooling. This moves the peak temperature point of the heated area closer to the write pole tip and reduces the temperature drop between the peak temperature and the temperature at the trailing edge of the write pole tip where writing occurs.

Abstract translation: 热辅助记录（TAR）磁盘驱动器使用带状闪烁的记录和矩形波导作为广域热源。 波导产生大致椭圆形的光点，其加热跨越多个数据轨道的记录层的区域。 波导芯具有实现加热区域的期望尺寸的纵横比（沿轨道厚度的横越轨道宽度），同时将峰值光强度定位在写入发生时写入磁极尖端的后缘附近。 波导芯的大的横向轨道宽度增加了由光点加热的记录层的体积，这降低了冷却速度。 这使得加热区域的峰值温度点更接近写极端，并且降低峰值温度与写入磁极尖端的后缘处的温度之间的温度下降。

公开(公告)号：US08339732B2

公开(公告)日：2012-12-25

申请号：US12881017

申请日：2010-09-13

Applicant: Jia-Yang Juang ,  Fu-Ying Huang ,  Takashi Tomita

Inventor： Jia-Yang Juang ,  Fu-Ying Huang ,  Takashi Tomita

IPC: G11B33/14

CPC classification number: G11B25/043 ,  G11B33/025

Abstract: Approaches for a hard-disk drive (HDD) baseplate comprising a recessed region that provides additional clearance for a disk. The protective enclosure of the HDD comprises a baseplate. The surface of the baseplate, which opposes a magnetic-recording disk, comprises a recessed region near the outer diameter (OD) of the magnetic-recording disk. The recessed region prevents the disk from being damaged through inadvertent physical contact with the baseplate, which may arise when the HDD receives a mechanical shock. The recessed region may be designed to minimize the damage to the disk if physical contact between the disk and the baseplate does occur. The recessed region may have a variety of shapes, such as a circular indentation or one or more non-contiguous regions in the baseplate where physical contact between the disk and the baseplate is deemed likely to occur.

Abstract translation: 硬盘驱动器（HDD）基板的方法包括为磁盘提供额外间隙的凹陷区域。 HDD的保护外壳包括底板。 基板的与磁记录盘相对的表面包括靠近磁记录盘的外径（OD）的凹陷区域。 凹陷区域通过与基板的无意物理接触来防止盘损坏，这在HDD接收到机械冲击时可能发生。 凹陷区域可以被设计成使得当盘和基板之间的物理接触确实发生时对盘的损坏最小化。 凹陷区域可以具有各种形状，例如基底板中的圆形凹陷或一个或多个非连续区域，其中认为盘和基板之间的物理接触可能发生。

公开(公告)号：US20090268335A1

公开(公告)日：2009-10-29

申请号：US12110235

申请日：2008-04-25

Applicant: Fu-Ying HUANG ,  Jia-Yang Juang ,  Timothy C. Strand

Inventor： Fu-Ying HUANG ,  Jia-Yang Juang ,  Timothy C. Strand

IPC: G11B21/02

CPC classification number: G11B5/3136 ,  G11B5/3133 ,  G11B5/40 ,  G11B5/6005 ,  G11B5/6064 ,  G11B5/607

Abstract: A method for neutralizing the flying height sensitivity associated with thermal pole-tip protrusion (T-PTP) of an air bearing slider comprises creating head material data and air bearing surface (ABS) compensation data, based on which a head/ABS design is created. The head material data comprises at least one material property that is dependent on the manner in which the material is fabricated, such as the coefficient of thermal expansion of a material deposited using a certain deposition process. The ABS compensation data comprises data about how respective ABS features affect air bearing pressure and, therefore, ABS compensation. A protrusion profile is determined for the head/ABS design, and whether or not this protrusion profile meets particular design criteria is then determined. The head/ABS creating and determining process can be iterated if necessary to arrive at a head/ABS design which provides neutral flying height sensitivity to a range of operational temperatures.

Abstract translation: 用于中和与空气轴承滑块的热极尖突起（T-PTP）相关联的飞行高度灵敏度的方法包括创建头部材料数据和空气轴承表面（ABS）补偿数据，基于该数据创建头部/ ABS设计 。 头材料数据包括取决于材料制造方式的至少一种材料性质，例如使用某种沉积工艺沉积的材料的热膨胀系数。 ABS补偿数据包括有关ABS特性如何影响空气轴承压力以及因此ABS补偿的数据。 确定头/ ABS设计的突起轮廓，然后确定该突起轮廓是否满足特定的设计标准。 如果需要，头/ ABS制造和确定过程可以重复以获得头/ ABS设计，其提供对一系列操作温度的中立飞行高度灵敏度。