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31. 发明授权

US07948701B2 Servo patterns for self-assembled island arrays 有权
标题翻译：自组装岛阵列的伺服模式
公开(公告)号：US07948701B2
公开(公告)日：2011-05-24
申请号：US12627621
申请日：2009-11-30
申请人： Thomas R. Albrecht , Zvonimir Z. Bandic , Xiao Z. Wu
发明人： Thomas R. Albrecht , Zvonimir Z. Bandic , Xiao Z. Wu
IPC分类号： G11B5/09 , G11B21/02 , G11B5/596
CPC分类号： G11B5/5965
摘要： Servo patterns and associated methods of fabricating servo patterns are described. For patterned storage media, data sectors and servo sectors may be patterned using self-assembly. In one embodiment, self-assembly is used to form a first array of islands and a second array of islands in servo sectors that are track-wise offset. A servo writing process is then performed to write a desired servo pattern in the arrays, such as for burst fields, synchronization fields, etc.
摘要翻译：描述了制造伺服模式的伺服模式和相关方法。对于图案化存储介质，可以使用自组装图案化数据扇区和伺服扇区。在一个实施例中，自组装被用于形成第一阵列阵列和在跟踪方向偏移的伺服扇区中的岛的第二阵列。然后执行伺服写入处理以在阵列中写入期望的伺服模式，例如用于突发字段，同步字段等。

32. 发明申请

US20110075297A1 PATTERNED MAGNETIC MEDIA HAVING AN EXCHANGE BRIDGE STRUCTURE CONNECTING ISLANDS 审中-公开
标题翻译：具有交换桥结构的图形磁介质连接岛
公开(公告)号：US20110075297A1
公开(公告)日：2011-03-31
申请号：US12959692
申请日：2010-12-03
申请人： Thomas R. Albrecht , Manfred E. Schabes
发明人： Thomas R. Albrecht , Manfred E. Schabes
IPC分类号： G11B5/82 , G11B5/84
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/743 , G11B5/855
摘要： Patterned magnetic recording media and associated methods of fabrication are described. The patterned magnetic recording media includes a perpendicular magnetic recording layer that is patterned into a plurality of discrete magnetic islands. The patterned magnetic recording media also includes an exchange bridge structure formed from magnetic material that connects the islands of the perpendicular magnetic recording layer. Connecting the islands with magnetic material increases exchange coupling between the islands, which makes the islands more magnetically stable.
摘要翻译：描述了图案化的磁记录介质和相关的制造方法。图案化的磁记录介质包括被图案化成多个离散磁岛的垂直磁记录层。图案化的磁记录介质还包括由连接垂直磁记录层的岛的磁性材料形成的交换桥结构。用磁性材料连接岛增加了岛之间的交换耦合，这使得岛更加磁稳定。

33. 发明申请

US20100309576A1 PATTERNED MEDIA MAGNETIC RECORDING DISK DRIVE WITH WRITE CLOCK PHASE ADJUSTMENT FOR WRITE HEAD TRACK MISREGISTRATION 有权
标题翻译：图形磁记录磁盘驱动器，用于写入头部跟踪误差的写时钟相位调整
公开(公告)号：US20100309576A1
公开(公告)日：2010-12-09
申请号：US12477765
申请日：2009-06-03
申请人： Thomas R. Albrecht , Manfred Ernst Schabes
发明人： Thomas R. Albrecht , Manfred Ernst Schabes
IPC分类号： G11B21/02
CPC分类号： G11B5/59627 , B82Y10/00 , G11B5/743
摘要： A patterned-media magnetic recording disk drive has compensation for write head track misregistration (TMR) from the track centerline. As the disk rotates, the read head detects angularly spaced servo sectors and generates a position error signal (PES) which is used by the servo control system to maintain the read head on track. As the disk rotates, the read head also detects angularly spaced synchronization marks, which are used to control the write clock so that magnetization reversal of the magnetic write field from the write head is synchronized with the position of the data islands. If there is TMR of the write head, there will be an effective shift of A(p in the timing of when the center of the data islands pass through the write field. The disk drive includes write clock phase adjustment circuitry that correlates the PES with Δφ to compensate for TMR of the write head.
摘要翻译：图案介质磁记录磁盘驱动器对从轨道中心线的写入磁头轨迹重合失调（TMR）进行补偿。当磁盘旋转时，读取头检测角度间隔的伺服扇区，并产生位置误差信号（PES），伺服控制系统使用该位置误差信号来维持读取头的轨迹。当盘旋转时，读取头还检测角度间隔的同步标记，其用于控制写入时钟，使得写入磁头的磁性写入磁场的磁化反转与数据岛的位置同步。如果存在写入头的TMR，那么在数据岛的中心经过写入场的时刻，A（p）的有效移位就是写入时钟相位调整电路，它将PES与＆Dgr;＆phgr;补偿写入头的TMR。

34. 发明申请

US20090310256A1 METHOD FOR MAKING A MASTER MOLD WITH HIGH BIT-ASPECT-RATIO FOR NANOIMPRINTING PATTERNED MAGNETIC RECORDING DISKS, MASTER MOLD MADE BY THE METHOD, AND DISK IMPRINTED BY THE MASTER MOLD 有权
标题翻译：用于制造具有高比特率比例的主模具用于纳米图案磁记录盘的方法，通过该方法制造的主模具和主模具所示的盘
公开(公告)号：US20090310256A1
公开(公告)日：2009-12-17
申请号：US12141060
申请日：2008-06-17
申请人： Thomas R. Albrecht , Barry Cushing Stipe , Henry Hung Yang
发明人： Thomas R. Albrecht , Barry Cushing Stipe , Henry Hung Yang
IPC分类号： G11B5/82 , B44C1/22 , B28B1/00
CPC分类号： G11B5/855
摘要： A method for making a master mold to be used for nanoimprinting patterned-media magnetic recording disks results in a master mold having topographic pillars arranged in a pattern of annular bands of concentric rings. The ratio of circumferential density of the pillars to the radial density of the concentric rings in a band is greater than 1. The method uses sidewall lithography to first form a pattern of generally radially-directed pairs of parallel lines on the master mold substrate, with the lines being grouped into annular zones or bands. The sidewall lithography process can be repeated, resulting in a doubling of the number of lines each time the process is repeated. Conventional lithography is used to form concentric rings over the radially-directed pairs of parallel lines. After etching and resist removal, the master mold has pillars arranged in circular rings, with the rings grouped into annular bands. The master mold may be used to nanoimprint the disks, resulting in disks having a BAR greater than 1, wherein BAR is the ratio of data track spacing in the radial direction to the data island spacing in the circumferential direction.
摘要翻译：用于制造用于纳米压印图案化介质磁记录盘的母模的方法导致具有布置成同心环的环形带图案的形状柱的母模。柱的圆周密度与带中同心环的径向密度的比率大于1.该方法使用侧壁光刻法首先在母模基底上形成大致径向定向的平行线对的图案，其中，线路被分组成环形区域或带。可以重复侧壁光刻处理，导致每次重复该过程的行数加倍。常规光刻用于在径向对平行线上形成同心环。在蚀刻和抗蚀剂去除之后，主模具有布置成圆形环的柱，其中环被分组成环形带。主模可以用于纳米压印盘，导致具有大于1的BAR的盘，其中BAR是径向方向上的数据轨道间隔与圆周方向上的数据岛间隔的比率。

35. 发明申请

US20090244765A1 PATTERNED MEDIA MAGNETIC RECORDING DISK DRIVE WITH WRITE CLOCK PHASE ADJUSTMENT FOR DATA PATTERN CIRCUMFERENTIAL MISALIGNMENT 有权
标题翻译：带有写时间相位调整的图形磁记录磁盘驱动器，用于数据模式循环缺失
公开(公告)号：US20090244765A1
公开(公告)日：2009-10-01
申请号：US12056178
申请日：2008-03-26
申请人： Thomas R. Albrecht
发明人： Thomas R. Albrecht
IPC分类号： G11B21/02
CPC分类号： G11B5/59616 , B82Y10/00 , G11B5/59627 , G11B5/743 , G11B5/746 , G11B5/82 , G11B20/10009 , G11B20/10222 , G11B20/1258 , G11B2005/0005 , G11B2020/1242 , G11B2020/1281 , G11B2220/252
摘要： A patterned-media magnetic recording disk drive compensates for circumferential misalignment of data island patterns among the data tracks as a result of errors in fabrication of the master template used to make the disks. Each data track on the disk has its pattern shifted from a generally radial or arcuate line by a certain amount of pattern circumferential misalignment (PCM). The disk drive includes a write clock where writing to the data islands is controlled by detection of synchronization marks by the read head, and circuitry to adjust the phase of the write clock to compensate for PCM. The phase difference between the data pattern of the selected data track where data is to be written and the data pattern of the track where the synchronization marks are being detected is the difference in their respective PCM values.
摘要翻译：图形介质磁记录磁盘驱动器补偿由于制造用于制造磁盘的主模板的错误而导致数据磁道之间的数据岛模式的周向未对准。磁盘上的每个数据轨道的图案都从大体径向或弧形线移动了一定量的图形圆周错位（PCM）。磁盘驱动器包括写入时钟，其中通过读取头检测同步标记来控制对数据岛的写入，以及用于调整写入时钟的相位以补偿PCM的电路。要写入数据的所选数据轨道的数据模式与正在检测同步标记的轨迹的数据模式之间的相位差是它们各自的PCM值的差。

36. 发明授权

US07492540B2 Apparatus system and method for variable data density patterned media 有权
标题翻译：用于可变数据密度图案化介质的装置系统和方法
公开(公告)号：US07492540B2
公开(公告)日：2009-02-17
申请号：US11532373
申请日：2006-09-15
申请人： Thomas R. Albrecht
发明人： Thomas R. Albrecht
IPC分类号： G11B5/09
CPC分类号： G11B5/59616 , B82Y10/00 , G11B5/012 , G11B5/59688 , G11B5/746 , G11B5/855 , G11B20/1024 , G11B20/1217 , G11B2020/1232 , G11B2020/1287 , G11B2220/252
摘要： An apparatus, system, and method are disclosed for variable data density patterned media. The apparatus includes a patterned media recording surface comprising a plurality of sectors. Each sector may include a synchronization region configured to generate a signal in a read head, a first data region with a first data density configured to generate a signal with a first frequency, and at least a second data region with a second data density configured to generate a signal with a second frequency. The system includes a hard disk drive and the apparatus. The method includes sensing a signal in a read head, synchronizing the frequency and phase of a write clock with a predetermined frequency and phase of a synchronization region, and modifying the frequency of the write clock after a period of time determined in response to at least one physical characteristic of the disk.
摘要翻译：公开了用于可变数据密度图案化介质的装置，系统和方法。该装置包括包括多个扇区的图案化介质记录表面。每个扇区可以包括被配置为在读取头中产生信号的同步区域，具有被配置为产生具有第一频率的信号的第一数据密度的第一数据区域以及具有第二数据密度的至少第二数据区域，产生具有第二频率的信号。该系统包括硬盘驱动器和设备。该方法包括感测读取头中的信号，使写时钟的频率和相位与同步区域的预定频率和相位同步，以及在响应于至少确定的时间段之后修改写入时钟的频率磁盘的一个物理特性。

37. 发明申请

US20080204915A1 PATTERNED MAGNETIC RECORDING MEDIUM WITH DATA ISLAND PATTERN FOR IMPROVED READING AND WRITING AND MAGNETIC RECORDING SYSTEM INCORPORATING THE MEDIUM 有权
标题翻译：带有数据海岛图案的图形磁记录介质，用于改进读取和写入和磁记录系统，并配有介质
公开(公告)号：US20080204915A1
公开(公告)日：2008-08-28
申请号：US11680398
申请日：2007-02-28
申请人： Thomas R. Albrecht , Michael A. Moser , Manfred Ernst Schabes , Xiao Z. Wu
发明人： Thomas R. Albrecht , Michael A. Moser , Manfred Ernst Schabes , Xiao Z. Wu
IPC分类号： G11B5/09
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/02 , G11B5/74 , G11B5/743 , G11B5/746 , G11B5/855 , G11B2005/0002
摘要： A patterned magnetic recording medium has discrete data islands arranged in spaced-apart tracks, with the tracks being arranged in multi-track groups or “hypertracks”. The islands have an equal island-spacing (IS) distance in the along-the-track direction and within each hypertrack the tracks are spaced-apart an equal track-spacing (TS) distance. If there are N tracks in a hypertrack then the islands in each track of a hypertrack are shifted in the along-the-track direction by 1/N times IS from the islands in adjacent tracks in the same hypertrack. The read and write heads have a lateral or cross-track width generally equal to the cross-track width of a hypertrack, so the read and write heads span all the individual tracks in a hypertrack. The hypertracks are spaced apart cross-track direction by a group-spacing (GS) distance, with GS being greater than TS. The islands in a hypertrack may be shifted in the along-the-track direction by approximately ½N times IS from the islands in adjacent hypertracks.
摘要翻译：图案化磁记录介质具有布置在间隔开的轨道中的离散数据岛，轨道被布置成多轨道组或“超曲线”。这些岛在沿轨道方向上具有相等的岛间距（IS）距离，并且在每个超曲线内，轨迹间隔相等的轨道间距（TS）距离。如果超轨迹中存在N个轨迹，则超轨迹的每个轨道中的岛屿沿着轨道方向从同一超轨迹中的相邻轨道中的岛屿移位IS / N次IS。读写头具有通常等于超曲线的横向轨道宽度的横向或横向轨道宽度，因此读和写头跨越超轨迹中的所有单个轨道。超曲线是跨距离方向间距（GS）距离，GS大于TS。超轨迹中的岛屿可能沿着轨道方向从相邻超轨道中的岛屿移位约1/2倍的IS。

38. 发明授权

US07193806B1 Feedback control mechanism for active damping of slider air bearing vibrations in a hard disk drive slider 有权
标题翻译：用于主动阻尼滑块空气轴承振动的反馈控制机构
公开(公告)号：US07193806B1
公开(公告)日：2007-03-20
申请号：US11289105
申请日：2005-11-29
申请人： Thomas R. Albrecht , Peter M. Baumgart , Bernhard E. Knigge
发明人： Thomas R. Albrecht , Peter M. Baumgart , Bernhard E. Knigge
IPC分类号： G11B21/02 , G11B5/596
CPC分类号： G11B5/6017 , G11B5/5582
摘要： In a feedback control mechanism for active damping of slider air bearing vibrations in a hard disk drive slider, a filter is used to filter a velocity signal from a slider to acquire a vibration signal. A phase-shifter, electrically coupled with the filter, shifts the phase of the vibration signal. An amplifier, electrically coupled with the phase-shifter, adjusts the amplitude of the phase-shifted vibration signal to achieve an amplitude adjusted vibration signal. An electrical coupler couples the amplitude adjusted vibration signal to the slider for actively damping air bearing vibrations in the slider.
摘要翻译：在用于在硬盘驱动器滑块中滑块空气轴承振动的主动阻尼的反馈控制机构中，使用滤波器来滤波来自滑动器的速度信号以获取振动信号。与滤波器电耦合的移相器移动振动信号的相位。与移相器电耦合的放大器调节相移振动信号的振幅，以实现调幅振动信号。电耦合器将振幅调节的振动信号耦合到滑块，用于主动地阻尼滑块中的空气轴承振动。

39. 发明授权

US06791774B1 Contact magnetic transfer of servo pattern to rigid perpendicular magnetic recording disk 有权
标题翻译：将伺服模式的磁传递接触到刚性垂直磁记录盘
公开(公告)号：US06791774B1
公开(公告)日：2004-09-14
申请号：US10436932
申请日：2003-05-12
申请人： Thomas R. Albrecht , Zvonimir Z. Bandic
发明人： Thomas R. Albrecht , Zvonimir Z. Bandic
IPC分类号： G11B586
CPC分类号： B82Y10/00 , G11B5/743 , G11B5/82 , G11B5/86 , G11B5/865 , G11B2005/0029
摘要： A contact magnetic transfer method forms a pattern of magnetized servo regions in the magnetic recording layer of a rigid perpendicular magnetic recording disk. A master disk or template has a rigid or flexible base with a first film of soft magnetic material on the base and a pattern of islands of soft magnetic material on and extending above the first film and recesses between the islands. The slave disk to be servo patterned is either DC magnetized in a first direction perpendicular to the plane of the recording layer or AC-erased. The slave disk is then placed with its outer layer in proximity to the islands of the master template and a magnetic field is applied in a perpendicular direction to magnetize the regions beneath the islands in the same direction as the applied field. In the regions of the recording layer beneath the recesses of the template the magnetization is reversed from that in the regions beneath the islands.
摘要翻译：接触磁转移方法在刚性垂直磁记录盘的磁记录层中形成磁化伺服区的图案。母盘或模板具有刚性或柔性基部，在基部上具有软磁材料的第一膜，并且在第一膜上方并且在第一膜之上延伸并且在岛之间的凹陷处形成软磁材料岛的图案。要伺服图案化的从盘在垂直于记录层的平面的第一方向上被直流磁化或被AC擦除。然后将从盘与其外层放置在主模板的岛附近，并且沿垂直方向施加磁场，以沿与所施加的场相同的方向磁化岛下的区域。在模板凹陷下方的记录层的区域中，磁化与岛下方的区域相反。

40. 发明授权

US6160686A Composite ramp structure for data storage devices 失效
标题翻译：用于数据存储设备的复合斜坡结构
公开(公告)号：US6160686A
公开(公告)日：2000-12-12
申请号：US79255
申请日：1998-05-14
申请人： Thomas R. Albrecht , Charles H. Heino, Jr. , Tsai-Wei Wu
发明人： Thomas R. Albrecht , Charles H. Heino, Jr. , Tsai-Wei Wu
IPC分类号： G11B21/12 , G11B5/54 , G11B5/55 , G11B21/22 , G11B33/14
CPC分类号： G11B21/22 , G11B5/5565
摘要： A ramp structure that is designed to reduce the amount of thermal expansion induced misalignment (changes in ramp-disk spacing) between load/unload ramps and data storage disks of a data storage device. The ramp structure has a rigid support structure and ramp units attached to the rigid support structure. The ramp units are made of plastic that is particularly suited for use as load/unload ramps. The ramps are mechanically connected only by means of being attached to the rigid support structure. The data storage disks are attached to a spindle. The rigid support structure is made of a material that has a thermal expansion coefficient that is equal to the thermal expansion coefficient of the spindle and any other parts to which the disks are attached. As a temperature change causes the spindle to expand and the spacing between disks to change, the rigid support structure expands at the same rate, thereby maintaining alignment between the ramps and the disks. Preferably, each ramp unit has two ramps, but each ramp unit can have a single ramp.
摘要翻译：斜坡结构设计用于减少数据存储设备的加载/卸载斜坡与数据存储盘之间的热膨胀引起的未对准（斜坡盘间距的变化）。斜坡结构具有刚性支撑结构和附接到刚性支撑结构的斜坡单元。斜坡单元由塑料制成，特别适合用作装载/卸载斜坡。斜坡仅通过附接到刚性支撑结构机械连接。数据存储盘连接到主轴。刚性支撑结构由具有与主轴的热膨胀系数相等的热膨胀系数的材料制成，以及与其相连的任何其它部件。当温度变化导致主轴膨胀并且盘之间的间隔改变时，刚性支撑结构以相同的速率膨胀，从而保持斜面和盘之间的对准。优选地，每个斜坡单元具有两个斜坡，但是每个斜坡单元可以具有单个斜坡。

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