公开(公告)号：US20060279873A1

公开(公告)日：2006-12-14

申请号：US11148752

申请日：2005-06-09

申请人： Zvonimir Bandic ,  Michael Moser

发明人： Zvonimir Bandic ,  Michael Moser

IPC分类号： G11B5/596

CPC分类号： G11B5/59688

摘要： A magnetic recording disk drive uses a phase-quadrature position-error-signal (PES) pattern and a servo signal demodulator that is insensitive to clock errors and phase-misalignment errors. The disk has angularly-spaced servo sectors, with each servo sector having radially-spaced servo tracks that contain a phase-quadrature pattern of servo blocks. A first band in each servo sector contains two generally like patterns radially-spaced in the servo track with the second pattern phase-shifted 90 degrees along-the-track from the first pattern. A second band in each servo sector is spaced along-the-track from the first band and also has two patterns like those in the first band, but with the phase shift of the second pattern being in the opposite direction to the phase shift of the second pattern in the first band. The demodulator calculates the true amplitudes of the servo signal from the measured amplitudes of the servo signals from each band to thereby remove clock errors and phase-misalignment errors.

摘要翻译： 磁记录盘驱动器使用对时钟误差和相位错位误差不敏感的相位正交位置误差信号（PES）模式和伺服信号解调器。 磁盘具有角度间隔的伺服扇区，每个伺服扇区具有包含伺服块的相位正交模式的径向间隔的伺服磁道。 每个伺服扇区中的第一频带包含在伺服轨道中径向间隔的两个大致相似的模式，其中第二模式与第一模式沿着轨迹相移90度。 每个伺服扇区中的第二频带与第一频带沿着轨道间隔开，并且还具有与第一频带中的那些相似的两个模式，但是第二模式的相移与相位偏移相反 第一个乐队的第二个模式。 解调器根据来自每个频带的伺服信号的测量幅度计算伺服信号的真实振幅，从而消除时钟误差和相位误差。

公开(公告)号：US08019935B2

公开(公告)日：2011-09-13

申请号：US11963839

申请日：2007-12-23

申请人： Cyril Guyot ,  Zvonimir Bandic ,  Anand Krishnamurthi Kulkarni

发明人： Cyril Guyot ,  Zvonimir Bandic ,  Anand Krishnamurthi Kulkarni

IPC分类号： G06F12/00 ,  G06F7/58

CPC分类号： G06F7/58

摘要： A hard disk drive is provided for enhancing random number generation. In particular embodiments, the hard disk drive includes a storage subsystem and a controller. The controller generates a random number based on information associated with the storage subsystem. The controller transmits the random number to a host system.

摘要翻译： 提供了一个硬盘驱动器来增强随机数生成。 在特定实施例中，硬盘驱动器包括存储子系统和控制器。 控制器基于与存储子系统相关联的信息生成随机数。 控制器将随机数发送到主机系统。

公开(公告)号：US20070241291A1

公开(公告)日：2007-10-18

申请号：US11403795

申请日：2006-04-12

申请人： Thomas Albrecht ,  Zvonimir Bandic ,  Michael Rooks

发明人： Thomas Albrecht ,  Zvonimir Bandic ,  Michael Rooks

IPC分类号： H01J37/302

CPC分类号： H01J37/3026 ,  B82Y10/00 ,  B82Y40/00 ,  G11B5/743 ,  G11B5/82 ,  G11B5/855 ,  H01J37/3174 ,  H01J2237/20228 ,  H01J2237/30438 ,  H01J2237/30455 ,  H01J2237/31764

摘要： A method for operating a Cartesian-type electron beam (e-beam) lithography (EBL) tool enables the efficient and precise writing of a closed curvilinear pattern, such as a circle, over a wide area of a workpiece. The curvilinear pattern overlies a plurality of contiguous fields of the EBL tool's x-y positioning stage, and the stage is moved along a path defined by the contiguous fields. Alignment marks associated with the first and next-to-last fields are formed on the specimen. The alignment marks are used to adjust the shape of the last field so that when the e-beam is scanned in the last field there is a substantially continuous connection of the pattern between the next-to-last field and the first field. The invention is particularly applicable to making a master disk with concentric circular tracks for nanoimprinting patterned magnetic recording disks.

摘要翻译： 用于操作笛卡尔电子束（e-beam）光刻（EBL）工具的方法使得能够在工件的广泛区域上有效且精确地写入诸如圆形的闭合曲线图案。 曲线图案覆盖EBL工具的x-y定位台的多个连续的场，并且该台沿着由连续的场定义的路径移动。 在样品上形成与第一和下一个至最后一个场相关联的对准标记。 对准标记用于调整最后一个场的形状，使得当在最后一个场中扫描电子束时，在下一个最后场和第一场之间存在着基本连续的图案连接。 本发明特别适用于制造具有用于纳米压印图案化磁记录盘的同心圆形轨道的母盘。

公开(公告)号：US20070190196A1

公开(公告)日：2007-08-16

申请号：US11353476

申请日：2006-02-14

申请人： Zvonimir Bandic ,  Tsai-Wei Wu

发明人： Zvonimir Bandic ,  Tsai-Wei Wu

IPC分类号： B29C35/08

CPC分类号： G03F7/0002 ,  B82Y10/00 ,  B82Y40/00 ,  Y10S425/81 ,  Y10S977/887

摘要： A nanoimprinting configuration includes a UV light diffuser that randomizes a collimated UV light beam so as to diffuse the shadowing effect from any defect object that resides in the UV optical path. In addition, a combination center circular pad and outer ring-shaped pad form a donut-shaped “non-contact” area between the two pad pieces. The size and shape of the two pad combination are designed to avoid direct gel pad contact above the patterned imprint zone on the disk substrate. The purpose of the gel pad, non-contact configuration is to eliminate any possible surface deformation incurred along the loading column and thereby avoid the elastic propagation of any deformations to the stamper resist surface.

摘要翻译： 纳米压印配置包括使准直的UV光束随机化的UV光漫射器，以便从位于UV光路中的任何缺陷对象扩散阴影效应。 此外，组合中心圆形垫和外环形垫在两个垫片之间形成环形“非接触”区域。 两个垫组合的尺寸和形状被设计成避免在盘基底上的图案化压印区上方的直接凝胶垫接触。 凝胶垫的非接触构造的目的是消除沿加载柱引起的任何可能的表面变形，从而避免任何变形到抗压面的弹性传播。

公开(公告)号：US20060165959A1

公开(公告)日：2006-07-27

申请号：US11044777

申请日：2005-01-26

申请人： Zvonimir Bandic ,  A. Erpelding ,  Jordan Katine ,  Quang Le ,  Kim Lee ,  Jui-Lung Li ,  Michael Rooks

发明人： Zvonimir Bandic ,  A. Erpelding ,  Jordan Katine ,  Quang Le ,  Kim Lee ,  Jui-Lung Li ,  Michael Rooks

IPC分类号： B32B3/00

CPC分类号： G11B5/865 ,  G11B5/855 ,  Y10T428/24612

摘要： A contact magnetic transfer (CMT) master template has a flexible plastic film with a planarized top or upper surface containing magnetic islands separated from one another by nonmagnetic regions. The flexible plastic film is secured at its perimeter to a silicon annulus that provides rigid support at the perimeter of the film. The plastic film is preferably polyimide that has recesses filled with the magnetic material that form the pattern of magnetic islands. The upper surfaces of the islands and the upper surfaces of the nonmagnetic regions form a continuous planar surface. The nonmagnetic regions are formed of chemical-mechanical-polishing (CMP) stop layer material that remains after a CMP process has planarized the upper surface of the plastic film.

公开(公告)号：US20060154112A1

公开(公告)日：2006-07-13

申请号：US11036503

申请日：2005-01-13

申请人： Zvonimir Bandic ,  Ernesto Marinero

发明人： Zvonimir Bandic ,  Ernesto Marinero

IPC分类号： G11B5/66 ,  G11B5/86

CPC分类号： G11B5/865 ,  G11B5/66 ,  G11B5/732

摘要： A contact magnetic transfer (CMT) master template with antiferromagnetically-coupled (AF-coupled) magnetic islands is used for transferring a magnetic pattern, such as a servo pattern, to a magnetic recording disk. The template is a rigid or flexible substrate with each magnetic island being two ferromagnetic films antiferromagnetically-coupled by an antiferromagnetically-coupling (AFC) film. In the presence of the applied magnetic field the magnetic moments of the two ferromagnetic films are parallel and substantially identical so they generate a magnetic field that cancels the applied field in the region of the slave disk facing the islands. However, when the applied field is removed, any residual magnetization results in the remanent moments in the two ferromagnetic films being oriented antiparallel as a result of the antiferromagnetic exchange coupling across the AFC film. Thus the islands have no net remanent magnetic moment that can affect the servo pattern transferred to the recording disk.

公开(公告)号：US20100205623A1

公开(公告)日：2010-08-12

申请号：US12368929

申请日：2009-02-10

申请人： Donald Joseph Molaro ,  Zvonimir Bandic

发明人： Donald Joseph Molaro ,  Zvonimir Bandic

IPC分类号： G11B7/00 ,  G11B17/03

CPC分类号： G11B17/021

摘要： A disk drive apparatus includes at least one disk, a head-arm assembly, and a controller circuit. The head arm assembly includes at least one read/write head. The head-arm assembly is movable to enable the read/write head to access a writable surface of the disk. The controller circuit also causes the read/write head to record data on the writable surface of the disk in a write append format.

摘要翻译： 盘驱动装置包括至少一个盘，头臂组件和控制器电路。 头臂组件包括至少一个读/写头。 头臂组件是可移动的，以使得读/写头能够访问盘的可写表面。 控制器电路还使得读/写头以写入附加格式在盘的可写表面上记录数据。

公开(公告)号：US07525109B2

公开(公告)日：2009-04-28

申请号：US11403795

申请日：2006-04-12

申请人： Thomas R. Albrecht ,  Zvonimir Bandic ,  Michael J. Rooks

发明人： Thomas R. Albrecht ,  Zvonimir Bandic ,  Michael J. Rooks

IPC分类号： H01J37/302

CPC分类号： H01J37/3026 ,  B82Y10/00 ,  B82Y40/00 ,  G11B5/743 ,  G11B5/82 ,  G11B5/855 ,  H01J37/3174 ,  H01J2237/20228 ,  H01J2237/30438 ,  H01J2237/30455 ,  H01J2237/31764

摘要： A method for operating a Cartesian-type electron beam (e-beam) lithography (EBL) tool enables the efficient and precise writing of a closed curvilinear pattern, such as a circle, over a wide area of a workpiece. The curvilinear pattern overlies a plurality of contiguous fields of the EBL tool's x-y positioning stage, and the stage is moved along a path defined by the contiguous fields. Alignment marks associated with the first and next-to-last fields are formed on the specimen. The alignment marks are used to adjust the shape of the last field so that when the e-beam is scanned in the last field there is a substantially continuous connection of the pattern between the next-to-last field and the first field. The invention is particularly applicable to making a master disk with concentric circular tracks for nanoimprinting patterned magnetic recording disks.

摘要翻译： 用于操作笛卡尔电子束（e-beam）光刻（EBL）工具的方法使得能够在工件的广泛区域上有效且精确地写入诸如圆形的闭合曲线图案。 曲线图案覆盖EBL工具的x-y定位台的多个连续的场，并且该台沿着由连续的场定义的路径移动。 在样品上形成与第一和下一个至最后一个场相关联的对准标记。 对准标记用于调整最后一个场的形状，使得当在最后一个场中扫描电子束时，在下一个最后场和第一场之间存在着基本连续的图案连接。 本发明特别适用于制造具有用于纳米压印图案化磁记录盘的同心圆形轨道的母盘。

公开(公告)号：US20070092650A1

公开(公告)日：2007-04-26

申请号：US11252457

申请日：2005-10-18

申请人： Thomas Albrecht ,  Zvonimir Bandic

发明人： Thomas Albrecht ,  Zvonimir Bandic

IPC分类号： B05D5/00 ,  C23C16/00

CPC分类号： C23C14/16 ,  B82Y10/00 ,  C23C14/042 ,  C23C14/18 ,  G11B5/59655 ,  G11B5/59688 ,  G11B5/743

摘要： An apparatus, system, and method are disclosed for utilizing a “shadow mask” approach to fabricate servo patterns on high density patterned media. The apparatus may include a deposition mask having a plurality of apertures generated by a conventional lithographic process. Material may be deposited onto a substrate through the deposition mask apertures from at least one deposition source oriented at unique deposition angles. In this manner, each aperture may correspond to multiple deposition locations. Apertures may be precisely dimensioned and positioned to create servo pattern features from the resulting deposition locations. The deposition mask may also include a plurality of bit pattern apertures adapted to direct a material to a plurality of deposition locations on the substrate, the deposition locations forming a bit pattern concurrent with formation of a servo pattern.

摘要翻译： 公开了一种利用“荫罩”方法在高密度图案化介质上制造伺服图案的装置，系统和方法。 该装置可以包括具有由常规光刻工艺产生的多个孔的沉积掩模。 材料可以通过沉积掩模孔从沉积源以独特的沉积角定向至少一个沉积源沉积到基底上。 以这种方式，每个孔可以对应于多个沉积位置。 孔径可以精确地定尺寸并定位成从所得到的沉积位置产生伺服图案特征。 沉积掩模还可以包括适于将材料引导到衬底上的多个沉积位置的多个位图形孔，沉积位置与形成伺服图案同时形成位模式。

公开(公告)号：US20060279871A1

公开(公告)日：2006-12-14

申请号：US11149028

申请日：2005-06-09

申请人： Thomas Albrecht ,  Zvonimir Bandic

发明人： Thomas Albrecht ,  Zvonimir Bandic

IPC分类号： G11B21/02 ,  G11B5/09 ,  G11B5/596

CPC分类号： G11B5/82 ,  B82Y10/00 ,  G11B5/59688 ,  G11B5/743 ,  G11B5/855

摘要： A method for formatting a magnetic recording disk with patterned nondata islands having alternating magnetization polarity in the along-the-track direction involves clocking write pulses to switch the magnetization direction of alternate, i.e., every other, nondata island. The clocking is controlled by the previously determined phase of the regions containing the nondata islands and the known offset along-the-track between the read head and write head. In each nondata region, every other nondata island in the along-the track direction has the same magnetization direction, with adjacent nondata islands having antiparallel magnetization directions. The disk may be either a horizontal magnetic recording disk, wherein the antiparallel magnetization directions are in the plane of the recording layer and parallel to the along-the-track direction, or a perpendicular magnetic recording disk, wherein the antiparallel the magnetization directions are “into” and “out of” the recording layer.

摘要翻译： 用于格式化具有沿着磁道方向具有交变磁化极性的图案化非磁性岛的磁记录盘的方法包括计时写入脉冲以切换交替的，即每隔一个的非磁化岛的磁化方向。 时钟由先前确定的包含非数据岛的区域以及读头和写头之间沿着轨道的已知偏移量控制。 在每个非数据区域中，沿轨道方向的每隔一个非数据岛具有相同的磁化方向，相邻的非数据岛具有反平行的磁化方向。 盘可以是水平磁记录盘，其中反平行磁化方向在记录层的平面中并且平行于轨道方向，或垂直磁记录盘，其中反并联的磁化方向为“ 进入“和”离开“记录层。