公开(公告)号：US07324299B1

公开(公告)日：2008-01-29

申请号：US11101114

申请日：2005-04-07

Applicant: Erhard Schreck ,  Donald J Brunnett ,  Jingbo Yu ,  Francis P. Crimi ,  Scott Hughes ,  Duc Banh ,  Anthony R. Hurtado ,  Kazuhiro Saito ,  Andrew LeFebvre ,  Chris Hawks ,  Thao Anh Nguyen ,  Brian Strom ,  Bruce C. Schardt

Inventor： Erhard Schreck ,  Donald J Brunnett ,  Jingbo Yu ,  Francis P. Crimi ,  Scott Hughes ,  Duc Banh ,  Anthony R. Hurtado ,  Kazuhiro Saito ,  Andrew LeFebvre ,  Chris Hawks ,  Thao Anh Nguyen ,  Brian Strom ,  Bruce C. Schardt

IPC: G11B21/02 ,  G11B5/596 ,  G11B5/58

CPC classification number: G11B5/58

Abstract: A disk drive having a drive housing, a storage disk that is rotatably coupled to the drive housing, and a slider assembly that includes a head and a slider mover. The head reads data from the storage disk during a read operation and writes data to the storage disk during a write operation. The slider mover maintains the head at a read HtD spacing during the read operation, at a pre-write HtD spacing during the read operation prior to the write operation, at a write HtD spacing during the write operation, and at an idle HtD spacing when the drive is not performing the read operation or the write operation. The disk drive includes a drive circuitry that directs a read power level to the slider mover to maintain the head at the read HtD spacing, a pre-write power level to maintain the head at the pre-write HtD spacing, a write power level to maintain the head at the write HtD spacing, and a idle power level to maintains the head at the idle HtD spacing.

Abstract translation: 具有驱动器壳体，可旋转地联接到驱动器壳体的存储盘的磁盘驱动器和包括头部和滑块移动器的滑块组件。 在读取操作期间，磁头从存储磁盘读取数据，并在写操作期间将数据写入存储磁盘。 滑动移动器在读操作期间以读写操作期间的读取HtD间隔，在写操作期间的读操作期间以写入HtD间隔，在写操作期间以写HtD间隔，以及在空闲HtD间隔处将头保持在读取HtD间隔， 驱动器不执行读操作或写操作。 磁盘驱动器包括驱动电路，其将读取功率电平引导到滑块移动器以将磁头保持在读取HtD间隔，预写功率电平以将磁头保持在预写HtD间隔，写入功率电平 将头部保持在写入HtD间距，并保持空闲功率级别，以将头部保持在空闲HtD间距。

公开(公告)号：US07310194B1

公开(公告)日：2007-12-18

申请号：US11101089

申请日：2005-04-07

Applicant: Bruce C. Schardt ,  Erhard Schreck ,  Jingbo Yu ,  Michael Mallary ,  Scott Hughes ,  Duc Banh ,  Kazuhiro Saito ,  Donald J Brunnett ,  Tim Glassburn ,  Chris Hawks ,  Thao Anh Nguyen ,  Andrew LeFebvre ,  Joerg Ferber ,  Richard K. Oswald ,  Brian Strom

Inventor： Bruce C. Schardt ,  Erhard Schreck ,  Jingbo Yu ,  Michael Mallary ,  Scott Hughes ,  Duc Banh ,  Kazuhiro Saito ,  Donald J Brunnett ,  Tim Glassburn ,  Chris Hawks ,  Thao Anh Nguyen ,  Andrew LeFebvre ,  Joerg Ferber ,  Richard K. Oswald ,  Brian Strom

IPC: G11B21/02

CPC classification number: G11B5/6029 ,  G11B5/3133 ,  G11B5/455 ,  G11B5/5534 ,  G11B5/607

Abstract: A disk drive includes a drive housing, a storage disk, a slider and a drive circuitry. The slider magnetically interacts with the storage disk, and includes a read/write head that is positioned to have an actual head-to-disk spacing greater than zero nanometers during rotation of the storage disk. The drive circuitry can determine and/or monitor the actual head-to-disk spacing at any time during the operation of the disk drive based on an amplitude or a change in the amplitude of a signal such as a variable gain amplifier signal. In one embodiment, the slider includes a slider mover that receives current via the drive circuitry and causes a deformation of a portion of the slider to change the head-to-disk spacing based on the amplitude of the signal. In another embodiment, the read/write head moves during substantially consistent rotational velocity of the storage disk from a first actual head-to-disk spacing equal to approximately zero nanometers, to a second actual head-to-disk spacing that is greater than zero nanometers based on a desired amplitude of the signal.

Abstract translation: 磁盘驱动器包括驱动器壳体，存储盘，滑块和驱动电路。 该滑块与存储盘磁性地相互作用，并且包括读/写头，其被定位成在存储盘旋转期间具有大于零纳米的实际头到盘间距。 驱动电路可以基于诸如可变增益放大器信号的信号的振幅或振幅的变化来确定和/或监视磁盘驱动器的操作期间的任何时间的实际磁头到磁盘间距。 在一个实施例中，滑块包括滑块移动器，其通过驱动电路接收电流，并且导致滑块的一部分的变形，以基于信号的幅度来改变头对盘间隔。 在另一个实施例中，读/写头在存储盘的基本一致的旋转速度从等于大约零纳米的第一实际磁头到磁盘间隔移动到大于零的第二实际磁头到磁盘间隔 基于信号的期望幅度的纳米。

公开(公告)号：US6013336A

公开(公告)日：2000-01-11

申请号：US4694

申请日：1998-01-08

Applicant: Peter Michael Baumgart ,  Wing Pun Leung ,  Thao Anh Nguyen ,  Andrew Ching Tam

Inventor： Peter Michael Baumgart ,  Wing Pun Leung ,  Thao Anh Nguyen ,  Andrew Ching Tam

IPC: B23K26/00 ,  G11B5/60 ,  G11B5/62 ,  G11B5/64 ,  G11B5/82 ,  G11B5/84 ,  B05D3/06 ,  B05D5/12

CPC classification number: B23K26/0078 ,  G11B5/62 ,  G11B5/64 ,  G11B5/82 ,  G11B5/84 ,  G11B5/8404 ,  G11B5/8408 ,  G11B5/6011

Abstract: A process for creating a "distant bump array" surface texture in a magnetic recording disk for reducing stiction and the disk so textured. The texturing process uses a tightly focused diode-pumped Nd:YLF or Nd:YVO.sub.4 or other solid-state laser that is pulsed with a 0.3-90 nanosecond pulse train to produce a plurality of distantly-spaced bumps in the disk surface. The bump creation process is highly controllable, permitting repeated creation of a preselected bump profile such as a smooth dimple or one with a central protrusion useful for low stiction without close spacing or elevated "roughness". Some bump profiles permit texturing of the data-storage region of the disk surface for low stiction without materially affecting magnetic data storage density.

Abstract translation: 用于在磁记录盘中创建“远距离的凸块阵列”表面纹理以减少静摩擦和磁盘的纹理的过程。 纹理化处理使用紧密聚焦的二极管泵浦Nd：YLF或Nd：YVO4或其他固体激光器，其用0.3-90纳秒脉冲串脉冲，以在盘表面中产生多个远距离间隔的凸块。 凸起创建过程是高度可控的，允许重复地产生预选的凸起轮廓，例如平滑凹坑或具有用于低静摩擦的中心突起的凸起轮廓，而没有紧密间隔或升高的“粗糙度”。 一些凸块轮廓允许对磁盘表面的数据存储区域进行纹理化以实现低静态，而不会对磁数据存储密度造成重大影响。

公开(公告)号：US07310195B1

公开(公告)日：2007-12-18

申请号：US11101113

申请日：2005-04-07

Applicant: Erhard Schreck ,  Francis P. Crimi ,  Andrew LeFebvre ,  Duc Banh ,  Thao Anh Nguyen ,  Brian Strom ,  Bruce C. Schardt

Inventor： Erhard Schreck ,  Francis P. Crimi ,  Andrew LeFebvre ,  Duc Banh ,  Thao Anh Nguyen ,  Brian Strom ,  Bruce C. Schardt

IPC: G11B21/02 ,  G11B5/596 ,  G11B5/58

CPC classification number: G11B5/6005

Abstract: A disk drive includes a drive housing, a storage disk, a slider and a drive circuitry. The storage disk has an inner and an outer diameter. The slider includes a read/write head and a slider mover that receives power from the drive circuitry to position the read/write head at a predetermined head-to-disk spacing during radial movement of the slider relative to the storage disk. The drive circuitry can direct a varying level of power to the slider mover during radial movement of the slider. In addition, the drive circuitry can increase the power to the slider mover as the read/write head nears a target track in order to decrease the head-to-disk spacing at the appropriate time. The drive circuitry can adjust the power to the slider mover so that the head-to-disk spacing remains within a predetermined range as the slider moves radially relative to the storage disk. The drive circuitry can also direct power to the slider mover so that the head-to-disk spacing is substantially the same at the start of a seek operation and when the read/write head arrives at a target track. The drive circuitry can also direct power to the slider mover based at least partially on the temperature of a portion of the slider.

Abstract translation: 磁盘驱动器包括驱动器壳体，存储盘，滑块和驱动电路。 存储盘具有内径和外径。 滑动器包括读/写头和滑块移动器，其在驱动器相对于存储盘的径向移动期间从驱动电路接收功率以将读/写头定位在预定的头到盘间隔。 驱动电路可以在滑块的径向运动期间将变化的功率级别引导到滑块移动器。 此外，当读/写头靠近目标轨道时，驱动电路可以增加滑块移动器的功率，以便在适当的时间减小头对盘间距。 驱动电路可以调节滑块移动器的功率，使得当滑块相对于存储盘径向移动时，磁头到磁盘间隔保持在预定范围内。 驱动电路还可以将电力引导到滑块移动器，使得在寻道操作开始时和当读/写头到达目标轨道时，磁头到磁盘的间距基本相同。 驱动电路还可以至少部分地基于滑块的一部分的温度将功率引导到滑块移动器。

公开(公告)号：US06246543B1

公开(公告)日：2001-06-12

申请号：US08714831

申请日：1996-09-17

Applicant: Peter Michael Baumgart ,  Wing Pun Leung ,  Hung Viet Nguyen ,  Thao Anh Nguyen ,  Andrew Ching Tam ,  Anthony Wu

Inventor： Peter Michael Baumgart ,  Wing Pun Leung ,  Hung Viet Nguyen ,  Thao Anh Nguyen ,  Andrew Ching Tam ,  Anthony Wu

IPC: G11B582

CPC classification number: G11B5/8408 ,  B23K26/355 ,  B23K26/40 ,  B23K2103/16 ,  B23K2103/52 ,  C03C23/0025 ,  G11B5/8404

Abstract: A magnetic recording disk with a glass substrate is textured by a process which creates an array of bumps in a magnetic head contact start and stop (CSS) region of the disk. The texturing process uses a laser to provide pulses of predetermined energy fluence on the glass substrate to produce a plurality of raised bumps in the substrate surface, each bump having a surface elevation controllable to within a few nanometers. The bumps are created without unwanted micro-cracking or ejection of surface material by exploiting a narrow operating region below the abrupt thermal shock fluence threshold of the glass substrate. This textured glass substrate provides the magnetic recording disk with improved stiction, wear, coatability and sensor flying height properties.

Abstract translation: 具有玻璃基板的磁记录盘通过在磁盘的磁头接触起始和停止（CSS）区域中产生凸起阵列的过程而被纹理化。 纹理化处理使用激光器在玻璃基板上提供预定能量注量的脉冲，以在基板表面中产生多个凸起的凸起，每个凸起具有可控制在几纳米内的表面高度。 通过利用低于玻璃基板的突然热冲击能量密度阈值的窄工作区域，产生不产生不希望的微裂纹或表面材料喷射的凸块。 这种纹理化的玻璃基板为磁记录盘提供了改善的粘性，磨损，涂布性和传感器飞行高度特性。

公开(公告)号：USRE37145E1

公开(公告)日：2001-04-24

申请号：US09374758

申请日：1999-08-13

Applicant: Michael Barenboim ,  Peter Michael Baumgart ,  Peter Paul Chrusch ,  Benjamin Karni ,  Pieter J. M. Kerstens ,  Thao Anh Nguyen ,  Hong S. Seing ,  Andrew Ching Tam

Inventor： Michael Barenboim ,  Peter Michael Baumgart ,  Peter Paul Chrusch ,  Benjamin Karni ,  Pieter J. M. Kerstens ,  Thao Anh Nguyen ,  Hong S. Seing ,  Andrew Ching Tam

IPC: B23K2600

CPC classification number: G11B23/00 ,  B23K26/067 ,  B23K26/0823 ,  G11B5/6011 ,  G11B5/82 ,  G11B5/84 ,  G11B5/8404

Abstract: A disk texturing tool is used, for example, to provide textured spots in an annular portion of both sides of a hardfile disk. Disks are moved into and out of the texturing process in cassettes, through two disk-handling stations. In each disk-handling station, a lifter raises each individual disk from the cassette. The individual disk is then transferred to a pick-and-place mechanism, which moves it to a spindle. The spindle spins and translates the disk, so that both sides of the disk are exposed to beams derived from a pulsed laser. The pick-and-place mechanism then returns the disk to the lifter, which lowers it into the cassette pocket from which it was taken. The pick-and-place mechanism simultaneously moves one disk from the lifter to the spindle and another from the spindle to the lifter. While disks are moved by the pick-and-place mechanism of one disk-handling station, a disk in the spindle of the other disk-handling station is exposed to the laser beams.

Abstract translation: 例如，使用磁盘纹理工具来在硬盘的两侧的环形部分中提供纹理斑点。 通过两个磁盘处理站将磁盘移入和移出磁带盒中的纹理过程。 在每个磁盘处理站中，升降器从盒中提起每个单独的盘。 然后将单个磁盘转移到拾取和放置机构，将其移动到主轴。 主轴旋转并平移盘，使得盘的两侧暴露于源自脉冲激光的束。 拾取和放置机构然后将磁盘返回到升降器，从而将其降低到从中取出的磁带盒中。 拾取和放置机构同时将一个盘从升降器移动到主轴，另一个从主轴移动到升降器。 当磁盘通过一个磁盘处理站的拾取和放置机构移动时，另一磁盘处理站的主轴中的磁盘暴露于激光束。

公开(公告)号：US5875084A

公开(公告)日：1999-02-23

申请号：US889348

申请日：1997-07-08

Applicant: Peter Michael Baumgart ,  Wing Pun Leung ,  Thao Anh Nguyen ,  Andrew Ching Tam

Inventor： Peter Michael Baumgart ,  Wing Pun Leung ,  Thao Anh Nguyen ,  Andrew Ching Tam

IPC: B23K26/00 ,  G11B5/60 ,  G11B5/62 ,  G11B5/64 ,  G11B5/82 ,  G11B5/84 ,  G11B5/704

CPC classification number: B23K26/0078 ,  G11B5/62 ,  G11B5/64 ,  G11B5/82 ,  G11B5/84 ,  G11B5/8404 ,  G11B5/8408 ,  G11B5/6011

Abstract: A process for creating a "distant bump array" surface texture in a magnetic recording disk for reducing stiction and the disk so textured. The texturing process uses a tightly focused diode-pumped Nd:YLF or Nd:YVO.sub.4 or other solid-state laser that is pulsed with a 0.3-90 nanosecond pulse train to produce a plurality of distantly-spaced bumps in the disk surface. The bump creation process is highly controllable, permitting repeated creation of a preselected bump profile such as a smooth dimple or one with a central protrusion useful for low stiction without close spacing or elevated "roughness". Some bump profiles permit texturing of the data-storage region of the disk surface for low stiction without materially affecting magnetic data storage density.

Abstract translation: 用于在磁记录盘中创建“远距离的凸块阵列”表面纹理以减少静摩擦和磁盘的纹理的过程。 纹理化处理使用紧密聚焦的二极管泵浦Nd：YLF或Nd：YVO4或其他固体激光器，其用0.3-90纳秒脉冲串脉冲，以在盘表面中产生多个远距离间隔的凸块。 凸起创建过程是高度可控的，允许重复地产生预选的凸起轮廓，例如平滑凹坑或具有用于低静摩擦的中心突起的凸起轮廓，而没有紧密间隔或升高的“粗糙度”。 一些凸块轮廓允许对磁盘表面的数据存储区域进行纹理化以实现低静态，而不会对磁数据存储密度造成重大影响。

公开(公告)号：US5729399A

公开(公告)日：1998-03-17

申请号：US572285

申请日：1995-12-13

Applicant: Thomas Robert Albrecht ,  Thao Anh Nguyen

Inventor： Thomas Robert Albrecht ,  Thao Anh Nguyen

IPC: G11B5/82 ,  G11B5/012 ,  G11B5/54 ,  G11B19/20 ,  G11B21/02 ,  G11B21/21 ,  G11B21/22

CPC classification number: G11B19/20 ,  G11B5/54

Abstract: A contact start/stop (CSS) magnetic recording disk drive has a highly textured head easier landing zone on the disk and uses a start/stop precedure that minimize both the time the carrier is in contact with the landing zone and the disk rotational speed during contact. The disk landing zone is textured with a pattern of laser-induced bumps that define a surface higher than the surface of the disk data region. At disk drive start-up and power-down, the head carrier exits and enters the landing zone at a predetermined disk rotational speed selected such that the air-bearing surface of the head carrier is still in contact with the surface of the landing zone but is flying in the data region. This limits the amount of time the carrier spends in contact with the textured surface and minimizes the disk speed when it is in contact. The reduced time and speed of carrier-disk contact in the landing zone improves the landing zone durability for any given texture level, which allows a larger level of texturing (and therefore lower stiction) to be used while maintaining adequate landing zone durability (number of CSS cycles without failure). Disk drive actuator control circuitry for start-up and actuator retract circuitry for power-down permit the head carrier to enter the disk data region while flying, even though the disk is not rotating at full speed and thus head servo positioning information is unavailable, and to exit the disk data region only when the disk has decreased to a speed at which the carrier is just capable of flying.

Abstract translation: 触点启动/停止（CSS）磁记录磁盘驱动器在磁盘上具有高度纹理化的头部更容易的着陆区域，并且使用启动/停止先验，以使载体与着陆区域的时间和盘旋转速度最小化 联系。 磁盘着陆区被纹理化，其具有限定比盘数据区域的表面更高的表面的激光诱发凸块的图案。 在磁盘驱动器启动和断电时，磁头托架以预定的磁盘旋转速度离开并进入着陆区域，使得磁头托架的空气轴承表面仍然与着陆区域的表面接触，但是 正在数据区域飞行。 这限制了载体与纹理表面接触的时间量，并使其在接触时的磁盘速度最小化。 在着陆区域中减小的载盘盘接触的时间和速度提高了任何给定纹理水平的着陆区耐久性，这允许在保持足够的着陆区耐久性的同时使用更大程度的纹理（并因此降低粘性） CSS循环没有失败）。 用于启动和启动器的磁盘驱动器执行器控制电路用于掉电，即使磁盘没有以全速旋转，磁头托架在飞行时也能进入磁盘数据区域，因此磁头伺服定位信息不可用，以及 只有当磁盘已经降低到载体能够飞行的速度时才退出磁盘数据区域。

公开(公告)号：US6118632A

公开(公告)日：2000-09-12

申请号：US800097

申请日：1997-02-12

Applicant: Thomas Robert Albrecht ,  Peter Michael Baumgart ,  Thao Anh Nguyen ,  Kurt Allen Rubin ,  Andrew Ching Tam

Inventor： Thomas Robert Albrecht ,  Peter Michael Baumgart ,  Thao Anh Nguyen ,  Kurt Allen Rubin ,  Andrew Ching Tam

IPC: G11B5/00 ,  G11B5/012 ,  G11B5/016 ,  G11B5/09 ,  G11B5/65 ,  G11B5/73 ,  G11B5/738 ,  G11B5/82 ,  G11B5/84 ,  G11B11/10 ,  G11B13/00 ,  G11B20/10 ,  G11B27/11 ,  G11B27/24

CPC classification number: G11B5/012 ,  G11B27/11 ,  G11B27/24 ,  G11B5/82 ,  G11B2005/001 ,  G11B2220/20 ,  G11B2220/65

Abstract: A magnetic disk with nonmagnetic information encoded under, in or above the magnetic layer of the disk is described along with the disk drive using the magnetic disks. The information may be stored as a series of laser-written marks (e.g., bumps, oxidized spots or spots with altered reflectivity) upon the surface(s) of each disk of the disk stack. The set of marks may be a series of laser bumps which serve a dual purpose as a landing zone or contact start/stop (CSS) zone for the slider and as encoded identifying information. During the manufacturing process for disk drives containing the disks, each disk's identifier can be read using outboard equipment such as an HRF tester or by means contained in the drive itself. Each disk identifier can then be stored magnetically in a special region of the hard disk reserved for use by the drive and/or within the flash memory of the hard drive. The drive can then communicate the identifier(s) to a host computer using the conventional communication hardware and firmware. In this way selected information such as the origin, batch number, date of manufacture, serial number, etc. of any disk can be obtained when needed as, for example, as part of failure analysis.

Abstract translation: 与使用磁盘的磁盘驱动器一起描述在磁盘的磁性层下面或上方编码的具有非磁性信息的磁盘。 信息可以作为一系列激光写入的标记（例如，具有改变的反射率的凸起，氧化点或斑点）存储在盘堆叠的每个盘的表面上。 该组标记可以是一系列激光凸块，其作为滑块的着陆区域或接触开始/停止（CSS）区域和作为编码的识别信息的双重目的。 在包含磁盘的磁盘驱动器的制造过程中，可以使用诸如HRF测试仪之类的外部设备或驱动器本身包含的方式读取每个磁盘的标识符。 然后可以将磁盘的每个标识符磁性地存储在硬盘的特殊区域中，以供驱动器使用和/或在硬盘驱动器的闪存中使用。 然后，驱动器可以使用传统的通信硬件和固件将标识符传送到主计算机。 以这种方式，当需要时，例如作为故障分析的一部分，可以获得任何盘的原点，批号，制造日期，序列号等所选择的信息。

公开(公告)号：US07509728B1

公开(公告)日：2009-03-31

申请号：US11101298

申请日：2005-04-07

Applicant: Erhard Schreck ,  Francis P. Crimi ,  Duc Bahn ,  Thao Anh Nguyen ,  Kazuhiro Saito ,  Donald J. Brunnett ,  Andrew LeFebvre ,  Scott Hughes ,  Brian Strom ,  Michael Mallary ,  Hyunchul Shim ,  Bruce C. Schardt

Inventor： Erhard Schreck ,  Francis P. Crimi ,  Duc Bahn ,  Thao Anh Nguyen ,  Kazuhiro Saito ,  Donald J. Brunnett ,  Andrew LeFebvre ,  Scott Hughes ,  Brian Strom ,  Michael Mallary ,  Hyunchul Shim ,  Bruce C. Schardt

IPC: G11B21/02

CPC classification number: G11B27/36 ,  G11B5/3133 ,  G11B5/40 ,  G11B5/6064 ,  G11B19/048 ,  G11B2220/2516 ,  Y10T29/49025 ,  Y10T29/49036

Abstract: A method for manufacturing a first disk drive includes incorporating a first storage disk having a first storage surface, and a first slider having a first read/write head and a slider mover into the first disk drive. Further, the first read/write head is movably positioned a first head-to-disk spacing relative to the first storage surface. The method also includes determining an incremental power level necessary to be delivered to a second slider mover of a second slider having a second read/write head to adjust a second head-to-disk spacing relative to a second storage surface by a predetermined increment. In addition, the method includes adjusting a first head-to-disk spacing by directing an operational power level to the first slider mover. The operational power level is derived from the incremental power level. The step of determining an incremental power level can include directing power to the second slider mover and detecting approximately when a portion of the second slider first contacts the second storage surface. Moreover, the step of adjusting can be performed during one or more manufacturing operations of the first disk drive.

Abstract translation: 一种用于制造第一盘驱动器的方法，包括：将具有第一存储表面的第一存储盘和具有第一读/写头和滑块移动器的第一滑块结合到第一盘驱动器中。 此外，第一读/写头相对于第一存储表面可移动地定位成第一头对盘间隔。 该方法还包括确定必须传送到具有第二读/写头的第二滑块的第二滑块移动器所需的增量功率水平，以相对于第二存储表面调整第二头 - 盘间隔预定增量。 此外，该方法包括通过将操作功率电平引导到第一滑块移动器来调整第一头对盘间隔。 运行功率电平是从增量功率电平得出的。 确定增量功率水平的步骤可以包括将功率引导到第二滑块移动器，并且大体上检测第二滑块的一部分是否首先接触第二存储表面。 此外，可以在第一盘驱动器的一个或多个制造操作期间执行调整步骤。