公开(公告)号：WO1997022441A1

公开(公告)日：1997-06-26

申请号：PCT/US1996019788

申请日：1996-12-16

Applicant: PHASE METRICS

Inventor： PHASE METRICS ,  BREZOCZKY, Blasius

IPC: B24B05/00

CPC classification number: G11B5/84 ,  B24B39/00

Abstract: A burnish head comprising a slider body (10) having a single crystal diamond (18) attached to a rear portion (19) flies above the disk surface at a relatively low flying height when the disk is rotated at a high angular velocity. The diamond (18) produces acoustic waves that cut or crack disk asperities (24), resulting in a highly-smooth disk surface suitable for near-contact or in-contact magnetic recording.

Abstract translation: 包括具有附接到后部（19）的单晶金刚石（18）的滑块体（10）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上方。 金刚石（18）产生剪切或破裂圆盘粗糙度（24）的声波，导致适合于近接触或接触磁记录的高度光滑的盘表面。

公开(公告)号：WO1997006527A1

公开(公告)日：1997-02-20

申请号：PCT/US1996011655

申请日：1996-07-11

Applicant: PHASE METRICS

Inventor： PHASE METRICS ,  LEE, Patrick, R. ,  CORMIER, Arthur, J.

IPC: G11B05/48

CPC classification number: G11B5/4826

Abstract: An integrated spring head/gimbal assembly holder is used to precisely load and unload a head/gimbal assembly (HGA) of the type used in magnetic disk drives. The holder includes a fixture base by which the holder is mounted. A first boss extending from the fixture base has a surface in which a recess is formed. The recess receives a second boss on the end of the HGA so that HGA rests on the surface of the first boss. A cantilevered beam extends from the fixture base and serves as a spring which includes a clamping head. Flexure of the cantilevered beam forces the clamping head to drive the second boss firmly against the sidewalls at the edge of the recess and to force the HGA against the surface of the boss. Thus, the HGA is precisely positioned and secured to the holder.

Abstract translation: 使用集成的弹簧头/万向节组件支架来精确地装载和卸载磁盘驱动器中使用的头/万向节组件（HGA）。 保持器包括固定座，安装座。 从固定基座延伸的第一凸台具有形成凹部的表面。 凹部在HGA的端部接收第二凸台，使得HGA位于第一凸台的表面上。 悬臂梁从夹具底座延伸，用作包括夹紧头的弹簧。 悬臂梁的挠曲力使夹头在凹槽的边缘处牢固地驱动第二凸台以抵抗侧壁并迫使HGA抵靠凸起表面。 因此，HGA被精确地定位并固定到保持器。

公开(公告)号：WO1997037289A1

公开(公告)日：1997-10-09

申请号：PCT/US1997004264

申请日：1997-03-19

Applicant: PHASE METRICS

Inventor： PHASE METRICS ,  CANNATA, John, W. ,  WHITEHOUSE, Rodney, K.

IPC: G05B19/00

CPC classification number: G11B5/00 ,  G11B5/012 ,  G11B20/1816 ,  G11B27/36 ,  G11B2005/001 ,  G11B2220/20

Abstract: An apparatus (200) for creating or editing a test program for testing a disk drive by entry command inputs. The apparatus (200) includes an input that allows the user to select the desired test instructions and subsequence of test instructions to create or edit a test program having a sequence of test instructions. The processor (210) executes the test program by generating a plurality of commands that are performed in a predetermined order. The commands may specify that the first circuit performs a glide test (220) or a burnish test, or that the second circuit performs a burnish test.

Abstract translation: 一种用于通过输入命令输入创建或编辑用于测试磁盘驱动器的测试程序的装置（200）。 装置（200）包括允许用户选择期望的测试指令和测试指令的子序列以创建或编辑具有测试指令序列的测试程序的输入。 处理器（210）通过产生以预定顺序执行的多个命令来执行测试程序。 命令可以指定第一电路执行滑动测试（220）或抛光测试，或者第二电路执行抛光测试。

公开(公告)号：WO1997019320A1

公开(公告)日：1997-05-29

申请号：PCT/US1996018211

申请日：1996-11-14

Applicant: PHASE METRICS

Inventor： PHASE METRICS ,  MARR, John, D. ,  LEE, Patrick, R.

IPC: G01B11/14

CPC classification number: G01B11/14

Abstract: A hard disk drive flying height tester loader (10) which moves a head gimbal assembly (HGA) (12) about the pivot axis (PA) of the HGA. The HGA is mounted to a clamp (26) that is attached to a pivot arm (4O). The pivot arm is attached to a cam follower (52) which follows a cam (12). The cam is moved by a motor (64) that is attached to a stationary sideplate (42). Movement of the cam rotates the pivot arm, clamp and HGA between a first position and a second position. The pivot arm is coupled to the stationary sideplate by a ball bearing assembly (44) which has a radius of curvature (r). The center of the ball bearing radius intersects the pivot axis of the HGA so that the clamp and HGA rotate about the pivot axis when the motor and cam move the pivot arm between the first and second positions.

Abstract translation: 一个硬盘驱动器飞行高度测试器装载器（10），其围绕HGA的枢转轴线（PA）移动头部万向节组件（HGA）（12）。 HGA安装到附接到枢转臂（40）的夹具（26）上。 枢转臂附接到跟随凸轮（12）的凸轮从动件（52）。 凸轮通过附接到固定侧板（42）的电机（64）移动。 凸轮的运动使枢转臂，夹具和HGA在第一位置和第二位置之间旋转。 枢转臂通过具有曲率半径（r）的滚珠轴承组件（44）联接到固定侧板上。 球轴承半径的中心与HGA的枢转轴线相交，使得当马达和凸轮在第一和第二位置之间移动枢转臂时，夹具和HGA围绕枢转轴线旋转。

公开(公告)号：WO1997027467A1

公开(公告)日：1997-07-31

申请号：PCT/US1997000992

申请日：1997-01-27

Applicant: PHASE METRICS

Inventor： PHASE METRICS ,  JANN, Peter, C. ,  CEINA, Vlastimil ,  CORMIER, Art

IPC: G01N21/00

CPC classification number: B82Y15/00 ,  G01N21/9506

Abstract: An optical scanner (22) scanning disks (2) or other materials connected to a microscope (32, 35-38) or other inspection device, providing the location of defects, flaws and events to the microscope (32, 35-38), facilitating defect location and analysis. In some embodiments, the microscope (32, 35-38) may be replaced with an electron microscope or an atomic force microscope, or other advanced image analysis. In some embodiments, information regarding the defect is provided to a manufacturing function automatically and quickly, thus preventing problems that might arise due to delays in communication. In some embodiments the disks (2) on which defects are found are physically moved to a remote microscope location, while in other embodiments the scanner (22) and microscope (32, 35-38) are located along the path (57) on which all disks (2) are transported.

Abstract translation: 光学扫描器（22）扫描盘（2）或连接到显微镜（32,35-38）或其它检查装置的其他材料，以将缺陷，缺陷和事件的位置提供给显微镜（32,35-38）， 促进缺陷位置和分析。 在一些实施例中，显微镜（32,35-38）可以用电子显微镜或原子力显微镜或其他高级图像分析来代替。 在一些实施例中，关于缺陷的信息被自动且快速地提供给制造功能，从而防止由于通信延迟而可能出现的问题。 在一些实施例中，找到缺陷的盘（2）被物理地移动到远程显微镜位置，而在其他实施例中，扫描器（22）和显微镜（32,35-38）沿着其上的路径（57） 所有磁盘（2）都被运送。

公开(公告)号：WO1997026529A1

公开(公告)日：1997-07-24

申请号：PCT/US1997000825

申请日：1997-01-17

Applicant: PHASE METRICS

Inventor： PHASE METRICS ,  JANN, Peter, C. ,  LI, Wayne, W. ,  IOSILEVSKY, Igor ,  WOMACK, Kenneth, H. ,  CEJNA, Vlastimil ,  BURT, George, A., Jr.

IPC: G01N21/47

CPC classification number: G01N21/9501 ,  G01N21/94 ,  G01N2201/1045

Abstract: A simple yet versatile noncontact optical inspection instrument and method for inspection of magnetic disk surfaces for surface defects. The instrument is also capable of discriminating between surface defects and surface contaminants. The instrument is comprised of two identical optical sensors (12) which are located on opposite sides of the disk (16). A carriage (14) supports and translates these sensors (12) along the disk radius while a spindle rotates the disk (16). Both surfaces of the disk (16) 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 (16) surface. Both the angle and power of the specular reflected light are measured, while just the power of the diffuse scattered light is measured.

Abstract translation: 一种简单而通用的非接触光学检测仪器和用于检查表面缺陷的磁盘表面的方法。 该仪器还能够区分表面缺陷和表面污染物。 该仪器由两个相同的光学传感器（12）组成，它们位于盘（16）的相对侧上。 当主轴旋转盘（16）时，托架（14）沿着盘半径支撑和平移这些传感器（12）。 因此，盘（16）的两个表面因此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（16）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。

公开(公告)号：WO1997017696A1

公开(公告)日：1997-05-15

申请号：PCT/US1996018094

申请日：1996-11-08

Applicant: PHASE METRICS

Inventor： PHASE METRICS ,  INBAR, Michael

IPC: G11B05/02

CPC classification number: H03D1/2281 ,  G01R33/1207 ,  G11B5/012 ,  G11B20/1816 ,  G11B27/36 ,  G11B33/10

Abstract: An apparatus and method for demodulating an amplitude modulated read signal generated by a magnetic head (12) of a hard disk drive. The apparatus includes a pair of serially connected track and hold circuits (16, 20) that receive the read signal. The track or hold state of each circuit is controlled by a phase lock loop circuit (24) which also receives the read signal. The first track and hold circuit initially tracks the read signal to a peak value. The second track and hold circuit tracks the output of the first circuit. The output signals are compared to a threshold value to detect bit errors in the signal. The constant output signals provide additional energy to the detection circuit to minimize the number of false error signals from the comparator circuit (32).

Abstract translation: 一种用于解调由硬盘驱动器的磁头（12）产生的调幅读信号的装置和方法。 该装置包括一对串行连接的跟踪和保持电路（16,20），其接收读取信号。 每个电路的跟踪或保持状态由也接收读取信号的锁相环电路（24）控制。 第一个跟踪和保持电路首先将读取的信号跟踪到一个峰值。 第二轨道和保持电路跟踪第一电路的输出。 将输出信号与阈值进行比较，以检测信号中的位错误。 恒定输出信号为检测电路提供额外的能量以最小化来自比较器电路（32）的误差信号的数量。

公开(公告)号：WO1997017621A1

公开(公告)日：1997-05-15

申请号：PCT/US1996018093

申请日：1996-11-08

Applicant: PHASE METRICS

Inventor： PHASE METRICS ,  INBAR, Michael

IPC: G01R33/12

CPC classification number: G01R33/1207

Abstract: A tester for testing the smoothness of a magnetic disk comprising a magnetic head (14) which can write and read data onto a disk. The magnetic head (14) generates a read signal that corresponds to the magnetic field of the disk. The read signal is a signal which varies at a frequency. When the head (14) strikes an asperity, the contact will produce a mechanical resonance in the head (14) and modulate the frequency of the read signal. The frequency modulated read signal is detected by a phase lock loop circuit (20) which generates an error signal. The error signal is provided to a digital signal processor (36) to measure the magnitude and number of asperities in the disk.

Abstract translation: 一种用于测试磁盘的平滑度的测试器，包括可以将数据写入和读取到磁盘上的磁头（14）。 磁头（14）产生对应于磁盘磁场的读取信号。 读取信号是频率变化的信号。 当头部（14）突起时，触点将在头部（14）中产生机械谐振，并且调制读取信号的频率。 调频读取信号由产生误差信号的锁相环电路（20）检测。 误差信号被提供给数字信号处理器（36）以测量盘中的粗糙度的大小和数量。

公开(公告)号：WO1996028725A1

公开(公告)日：1996-09-19

申请号：PCT/US1996002975

申请日：1996-03-04

Applicant: PHASE METRICS

Inventor： PHASE METRICS ,  SHELOR, John, Richard

IPC: G01N27/72

CPC classification number: G01R31/2834 ,  G01R31/2837 ,  G11B5/3166 ,  G11B5/455 ,  G11B5/48 ,  G11B33/10 ,  G11B2005/0016

Abstract: A preprogrammed controller (10), preferably a stored program computer, is programmed to automatically control all the steps in the testing of an MR reproduce head (16). First, the magnitude of the sense current is established by command of the controller, and a voltage proportional to the sense current flowing in the head is monitored by the controller. An electromagnet (24) whose current is programmed by the controller provides a magnetic field for exciting the MR head. The MR device is placed on an equipotential of the field of the electromagnet, and a Hall sensor (26) is placed on the same magnetic equipotential line but in a different location. The output of the Hall sensor is fed into the preamplifier electronics (20), digitized by a converter then stored. By controlling the current to the electromagnetic driver, the test field at the MR element is swept from a minimum to a maximum field value and back again, while correlation voltage from the MR head is acquired.

Abstract translation: 编程的预编程控制器（10），优选地存储程序计算机，被编程为自动控制MR再现头（16）的测试中的所有步骤。 首先，通过控制器的命令来建立感测电流的大小，并且通过控制器监测与流过头部的感测电流成比例的电压。 电流由控制器编程的电磁体（24）提供用于激励MR磁头的磁场。 MR装置放置在电磁铁场的等电位上，霍尔传感器（26）放置在相同的磁等电位线上，但位于不同的位置。 霍尔传感器的输出被馈送到前置放大器电子器件（20）中，由转换器数字化然后存储。 通过控制到电磁驱动器的电流，将MR元件的测试场从最小扫描到最大场值，然后再次返回，同时获得MR磁头的相关电压。

公开(公告)号：WO1995017646A1

公开(公告)日：1995-06-29

申请号：PCT/US1994014676

申请日：1994-12-14

Applicant: PHASE METRICS

Inventor： PHASE METRICS ,  LACEY, Christopher ,  ROSS, Edward, W.

IPC: G01C09/02

CPC classification number: G11B21/12 ,  G01B11/14 ,  G11B21/21 ,  G11B33/10

Abstract: The apparatus and method for measuring a small spacing down to contact uses interferometric fringe intensity calibration to calibrate maximum and minimum intensity of two or more monochromatic of quasi-monochromatic interference patterns caused by a spacing between two articles (10, 12), one of which is transparent (10). The intensity calibration is done by measuring maximum and minimum fringe intensity of each color (81, 82) while altering the spacing by at least 1/4 of the wavelength of the light or other electromagnetic radiation being used. The calibration by changing spacing allows the fringe order to be calculated for each wavelength of the radiation being used. This calibration procedure allows the maximum and minimum intensity of the radiation to be known, as well as the fringe order of the interference patterns to be calculated. With the maximum and minimum intensities and the fringe orders known, the spacing is readily calculated from the interferometric theory.

Abstract translation: 用于测量向下接触的小间距的装置和方法使用干涉条纹强度校准来校准由两个物品（10,12）之间的间隔引起的两个或更多个单色的准单色干涉图案的最大和最小强度，其中之一 是透明的（10）。 通过测量每种颜色（81,82）的最大和最小条纹强度，同时将间距改变为所使用的光或其他电磁辐射的至少1/4波长来进行强度校准。 通过改变间隔的校准允许针对所使用的辐射的每个波长计算条纹顺序。 该校准程序允许了解辐射的最大和最小强度以及要计算的干涉图案的边缘顺序。 利用已知的最大和最小强度和边缘级，可以从干涉测量理论中容易地计算间距。