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1. 发明授权

US5927934A End effector for a robotic arm of a disk certifier 有权
标题翻译：用于磁盘认证机器人手臂的末端执行器
公开(公告)号：US5927934A
公开(公告)日：1999-07-27
申请号：US190405
申请日：1998-11-11
申请人： Alex Dadiomov
发明人： Alex Dadiomov
IPC分类号： B25J15/00 , G11B17/22 , G11B23/00 , B66C1/100
CPC分类号： G11B23/00 , B25J15/0019 , G11B17/225
摘要： An apparatus and method for aligning an end effector that is attached to a robotic arm of a disk certification system. The end effector includes a disk paddle that is pivotally connected to an end effector housing. The end effector housing has a center opening that can receive a gripper subassembly. The disk paddle grabs a disk which has a center opening. The disk paddle is aligned by placing the end effector onto an alignment plate so that a center alignment pin of the plate is inserted into the center opening of the housing, and an outer alignment pin is inserted into the center opening of the disk. The end effector has an adjustment screw that can be adjusted to vary the position of the disk paddle so that the outer alignment pin is accurately positioned within the disk center opening. After alignment the end effector can be attached to the robotic arm.
摘要翻译：用于对准附接到盘认证系统的机器人臂的末端执行器的装置和方法。末端执行器包括可枢转地连接到末端执行器壳体的盘片。端部执行器壳体具有可接收夹具子组件的中心开口。盘片抓住具有中心开口的盘。通过将端部执行器放置在对准板上使盘片对准，使得板的中心对准销插入到壳体的中心开口中，并且外部对准销插入到盘的中心开口中。端部执行器具有可调节的调节螺钉，以改变盘片的位置，使得外部对准销精确地定位在盘中心开口内。在对准之后，末端执行器可以附接到机器臂。

2. 发明授权

US5838510A Method and apparatus for the measurement of defects in magnetic recording disks using a logarithmic amplifier 失效
标题翻译：使用对数放大器测量磁记录盘中的缺陷的方法和装置
公开(公告)号：US5838510A
公开(公告)日：1998-11-17
申请号：US739877
申请日：1996-10-31
申请人： Michael Inbar
发明人： Michael Inbar
IPC分类号： G11B5/012 , G11B20/18 , G11B27/34 , G11B27/36 , G11B33/10 , G11B5/027
CPC分类号： G11B5/012 , G11B20/1816 , G11B27/34 , G11B27/36 , G11B33/10
摘要： The present invention relates to a method and apparatus for the measurement of defects in magnetic recording disks using a logarithmic amplifier. A magnetic head senses a magnetic field of a magnetic disk and creates a read signal having a varying amplitude. The test apparatus has a squarer which receives and squares the read signal. A logarithmic amplifier coupled to the squarer converts the squared signal to a logarithmic signal. The logarithmic signal is filtered by a first filter. A second filter coupled to the logarithmic amplifier provides an average of the peaks of the logarithmic signal. A digital-to-analog converter coupled to the second filter scales the output of the second filter. The test apparatus further comprises a comparator having a first input and a second input, where the first input is coupled to the first filter, and the second input is coupled to the digital-to-analog converter. The comparator provides an output signal in response to receiving a signal from the first filter having an amplitude that is lower than an average of a predetermined number of peak values of the signal, thereby indicating an error in the disk. In another embodiment, the test apparatus is implemented using a rectifier instead of a squarer.
摘要翻译：本发明涉及使用对数放大器测量磁记录盘中的缺陷的方法和装置。磁头感测磁盘的磁场并产生具有变化幅度的读取信号。测试装置具有接收和平移读取信号的平方器。耦合到平方的对数放大器将平方信号转换成对数信号。对数信号由第一滤波器滤波。耦合到对数放大器的第二滤波器提供对数信号的峰值的平均值。耦合到第二滤波器的数模转换器缩放第二滤波器的输出。测试装置还包括具有第一输入和第二输入的比较器，其中第一输入耦合到第一滤波器，并且第二输入耦合到数 - 模转换器。比较器响应于从第一滤波器接收的信号具有低于信号的预定峰值值的平均值的幅度，从而指示盘中的错误，提供输出信号。在另一个实施例中，使用整流器而不是平方器来实现测试装置。

3. 发明授权

US5805284A Optically verified glide 失效
标题翻译：光学验证滑翔
公开(公告)号：US5805284A
公开(公告)日：1998-09-08
申请号：US797536
申请日：1997-02-07
申请人： Christopher A. Lacey
发明人： Christopher A. Lacey
IPC分类号： G01B11/14 , G11B5/60 , G11B21/21 , G11B27/36 , G11B33/10 , G01B9/02
CPC分类号： G11B33/10 , G01B11/14 , G11B21/21 , G11B27/36 , G11B5/6076
摘要： An efficient method and apparatus for taking the data needed for a glide test; the data includes measuring flying height of a slider over a regular rotating disk and measuring piezoelectric contact with the disk. An optical system provides a beam of light. To measure the flying height, part of the beam of light is reflected from a surface of the transparent slider. Another portion of the beam is reflected from the surface of a rotating disk. The two beams are transferred through an optical system and imaged onto a CCD camera which converts the separation of intensity maxima or intensity minima into information regarding the air gap separating the slider and the disk. A piezoelectric sensor on the slider measures slider contact with the disk. A processor combines data from the piezoelectric sensor with data from the CCD camera to measure disk asperities.
摘要翻译：一种用于获取滑翔测试所需数据的有效方法和装置; 数据包括测量滑块在常规旋转盘上的飞行高度并测量与盘的压电接触。光学系统提供光束。为了测量飞行高度，光束的一部分从透明滑块的表面反射。梁的另一部分从旋转盘的表面反射。两个光束通过光学系统传送并成像到CCD相机上，CCD相机将强度最大值或强度最小值的分离转换成关于分离滑块和盘的气隙的信息。滑块上的压电传感器测量与磁盘的滑块接触。处理器将来自压电传感器的数据与CCD相机的数据相结合，以测量磁盘粗糙度。

4. 发明授权

US5781649A Surface inspection of a disk by diffraction pattern sampling 失效
$Surface inspection of a disk by diffraction pattern sampling$
标题翻译：通过衍射图案采样对盘进行表面检查
公开(公告)号：US5781649A
公开(公告)日：1998-07-14
申请号：US632246
申请日：1996-04-15
申请人： Blasius Brezoczky
发明人： Blasius Brezoczky
IPC分类号： G01N21/94 , G06T7/00
CPC分类号： G01N21/94
摘要： An optical inspection apparatus detects anomalies by reflecting a beam of coherent light off the surface of a sample. An anomaly present on the surface causes the reflected beam to be diffracted at an angle which corresponds to a scale of the anomaly. An optical detection array is positioned to receive the reflected diffraction pattern and produce an electrical signal which corresponds to the diffraction angle of the reflected pattern. The electrical signal may then be processed to determine the location and scale of the anomaly from the detected diffraction angle.
摘要翻译：光学检查装置通过将相干光束从样品的表面反射而检测异常。表面上存在的异常使得反射光束以与异常尺度相对应的角度被衍射。定位光学检测阵列以接收反射的衍射图案并产生对应于反射图案的衍射角的电信号。然后可以处理电信号以从检测到的衍射角度确定异常的位置和尺度。

5. 发明授权

US5658191A Burnish head for magnetic media 失效
标题翻译：磁性介质烫发头
公开(公告)号：US5658191A
公开(公告)日：1997-08-19
申请号：US574934
申请日：1995-12-19
申请人： Blasius Brezoczky
发明人： Blasius Brezoczky
IPC分类号： B24B39/00 , G11B5/84 , B24B39/06 , B24B7/04
CPC分类号： G11B5/84 , B24B39/00
摘要： A burnish head comprising a slider body having a single crystal diamond attached to a rear portion flies above the disk surface at a relatively low flying height when the disk is rotated at a high angular velocity. The diamond produces acoustic waves that cut or crack disk asperities, resulting in a highly-smooth disk surface suitable for near-contact or in-contact magnetic recording.
摘要翻译：包括具有附接到后部的单晶金刚石的滑块体的抛光头在盘以高角速度旋转时以相对低的飞行高度飞过盘表面之上。钻石产生切割或破裂圆盘粗糙度的声波，导致适合于接近或接触磁记录的高度光滑的盘表面。

6. 发明授权

US5957588A Air bearing for a spindle 失效
标题翻译：主轴空气轴承
公开(公告)号：US5957588A
公开(公告)日：1999-09-28
申请号：US999417
申请日：1997-12-29
申请人： Michael Wahl
发明人： Michael Wahl
IPC分类号： F16C17/10 , F16C33/10 , G11B19/20 , F16C32/06
CPC分类号： F16C33/107 , F16C17/105 , G11B19/2018 , F16C2370/12
摘要： A self-acting air bearing for a pressurized spindle air bearing includes a bearing that is located within a cavity of a housing. The bearing and cavity may be shaped as a segment of a sphere. The spindle may be connected to a pressurized air source which creates an air bearing within a gap that separates the bearing from the housing. The bearing is attached to a shaft that is rotated by a motor. Rotation of the bearing creates a flow of air within the gap. The cavity and/or bearing may have a slot which cooperates with the air flow to increase the pressure of the air bearing.
摘要翻译：用于加压主轴空气轴承的自动空气轴承包括位于壳体的腔内的轴承。轴承和空腔可以被成形为球体的一部分。主轴可以连接到加压空气源，其在将轴承与壳体分离的间隙内产生空气轴承。轴承安装在由马达旋转的轴上。轴承的旋转产生间隙内的空气流。空腔和/或轴承可以具有与空气流配合以增加空气轴承的压力的槽。

7. 发明授权

US5894374A Method and apparatus for providing a clock assembly 失效
标题翻译：用于提供时钟组件的方法和装置
公开(公告)号：US5894374A
公开(公告)日：1999-04-13
申请号：US768558
申请日：1996-12-17
申请人： Alex Moraru
发明人： Alex Moraru
IPC分类号： G11B5/55 , G11B5/596 , G11B21/00 , G11B21/08 , G11B5/48
CPC分类号： G11B5/5534 , G11B21/00 , G11B21/083 , G11B5/59633
摘要： The present invention is a clock head assembly that provides reference clock signals during servo writing of a magnetic disk in a hard drive. The clock head assembly includes a clock head that is pivotably mounted to a housing. The housing encloses a disk mounted to a spindle. The spindle is attached to the spindle motor of a hard disk drive through an opening in the housing. The spindle motor of the disk drive rotates the spindle and disk of the clock head assembly. The clock head is coupled to a cam that is manually actuated by a lever to move the clock head arm assembly between a loaded position and an unloaded position. During servo writing, the clock head is loaded onto the disk so that reference clock signals may be read from the disk and provided to a servo controller which utilizes the clock signals to write servo information onto the disk within the hard disk drive. Upon completion of servo writing, the clock head assembly is detached from the hard disk drive. The clock head assembly may be attached to the hard drive assembly in a non-clean room environment. In addition, the servo writing process may be conducted in a non-clean room environment.
摘要翻译：本发明是一种时钟磁头组件，其在磁盘在硬盘驱动器中的伺服写入期间提供参考时钟信号。时钟头组件包括可枢转地安装到壳体的时钟头。壳体包围安装到主轴的盘。主轴通过外壳中的开口连接到硬盘驱动器的主轴电机。磁盘驱动器的主轴电机旋转时钟磁头组件的主轴和磁盘。时钟头耦合到由杠杆手动致动的凸轮，以将时钟头臂组件移动到加载位置和卸载位置之间。在伺服写入期间，时钟头被加载到盘上，从而可以从盘读取参考时钟信号，并提供给使用时钟信号的伺服控制器将伺服信息写入到硬盘驱动器内的盘上。伺服写入完成后，时钟头组件与硬盘驱动器分离。时钟头组件可以在非洁净室环境中附接到硬盘驱动器组件。此外，伺服写入处理可以在非洁净室环境中进行。

8. 发明授权

US5893699A End effector for a robotic arm of a disk certifier 失效
公开(公告)号：US5893699A
公开(公告)日：1999-04-13
申请号：US740648
申请日：1996-10-31
申请人： Alex Dadiomov
发明人： Alex Dadiomov
IPC分类号： B25J15/00 , G11B17/22 , G11B23/00 , B25J19/00
CPC分类号： G11B23/00 , B25J15/0019 , G11B17/225
摘要： An apparatus and method for aligning an end effector that is attached to a robotic arm of a disk certification system. The end effector includes a disk paddle that is pivotally connected to an end effector housing. The end effector housing has a center opening that can receive a gripper subassembly. The disk paddle grabs a disk which has a center opening. The disk paddle is aligned by placing the end effector onto an alignment plate so that a center alignment pin of the plate is inserted into the center opening of the housing, and an outer alignment pin is inserted into the center opening of the disk. The end effector has an adjustment screw that can be adjusted to vary the position of the disk paddle so that the outer alignment pin is accurately positioned within the disk center opening. After alignment the end effector can be attached to the robotic arm.

9. 发明授权

US5875029A Apparatus and method for surface inspection by specular interferometric and diffuse light detection 失效
标题翻译：通过镜面干涉和漫反射光检测进行表面检测的装置和方法
公开(公告)号：US5875029A
公开(公告)日：1999-02-23
申请号：US908061
申请日：1997-08-11
申请人： Peter C. Jann , Wayne W. Li , Igor Iosilevsky , Kenneth H. Womack , Vlastimil Cejna , George A. Burt, Jr.
发明人： Peter C. Jann , Wayne W. Li , Igor Iosilevsky , Kenneth H. Womack , Vlastimil Cejna , George A. Burt, Jr.
IPC分类号： G01N21/94 , G01N21/956 , G01B9/02
CPC分类号： G01N21/9501 , G01N21/94 , G01N2201/1045
摘要： A simple yet versatile noncontact optical inspection instrument and method are described for the inspection of magnetic disk surfaces for surface defects. This instrument is capable of inspecting the disk surface at any point in the disk manufacturing process. Surface defects such as bumps, pits and scratches can be measured. Surface contaminants such as particles and stains can also be measured. The instrument is also capable of discriminating between surface defects and surface contaminants. The instrument is comprised of two identical optical sensors which are located on opposite sides of the disk. A carriage supports and translates these sensors along the disk radius while a spindle rotates the disk. Both surfaces of the disk are therefore simultaneously scanned in a spiral fashion. The sensor's illumination optics produce a monochromatic focused spot of light which is normally incident upon the disk surface. The sensor uses two collection optics channels which simultaneously detect both the specular reflected light and the diffuse scattered light produced by the disk surface. Both the angle and power of the specular reflected light are measured, while just the power of the diffuse scattered light is measured. The output signals from the sensors are processed to estimate the size of the defects and to determine the type of defect.
摘要翻译：描述了一种简单而通用的非接触式光学检测仪器和方法，用于检查表面缺陷的磁盘表面。该仪器能够在磁盘制造过程的任何时刻检查磁盘表面。可以测量诸如凸块，凹坑和划痕的表面缺陷。还可以测量颗粒和污渍等表面污染物。该仪器还能够区分表面缺陷和表面污染物。仪器由两个相同的光学传感器构成，位于光盘的相对两侧。当主轴旋转磁盘时，滑架沿着磁盘半径支撑并平移这些传感器。因此，盘的两个表面都以螺旋方式同时扫描。传感器的照明光学器件产生通常入射在盘表面上的单色聚光光点。该传感器使用两个收集光学通道，其同时检测镜面反射光和由盘表面产生的漫射散射光。测量镜面反射光的角度和功率，同时测量漫射散射光的功率。来自传感器的输出信号被处理以估计缺陷的尺寸并确定缺陷的类型。

10. 发明授权

US5841318A Low noise preamplifier for a magneto-resistive head tester 失效
标题翻译：用于磁阻头测试仪的低噪声前置放大器
公开(公告)号：US5841318A
公开(公告)日：1998-11-24
申请号：US792940
申请日：1997-01-21
申请人： Robert M. Cram
发明人： Robert M. Cram
IPC分类号： G11B5/00 , G11B5/012 , G11B5/02 , G11B5/455 , H03F1/02
CPC分类号： G11B5/455 , G11B5/012 , G11B5/02 , G11B2005/0018
摘要： The present invention relates to an apparatus and method for amplifying a signal from a MR element of a hard disk drive magnetic recording head having a DC component and an AC component. The apparatus includes an amplifier circuit that amplifies the signal. An offset corrector circuit is coupled to the amplifier circuit and generates an offset signal representative of a complement of the dc component of the signal. A circuit is coupled to the amplifier circuit and the offset corrector circuit that combines the signal and the offset signal to provide an output signal representative of the AC component of the signal.
摘要翻译：本发明涉及用于放大来自具有DC分量和AC分量的硬盘驱动器磁记录头的MR元件的信号的装置和方法。该装置包括放大信号的放大器电路。偏移校正器电路耦合到放大器电路并产生表示信号的直流分量的补码的偏移信号。电路耦合到放大器电路和偏移校正器电路，其组合信号和偏移信号以提供表示信号的AC分量的输出信号。

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