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1. 发明授权

US06580266B2 Thin film delamination detection for magnetic disks 失效
标题翻译：磁片薄膜分层检测
公开(公告)号：US06580266B2
公开(公告)日：2003-06-17
申请号：US10053016
申请日：2001-11-02
申请人： Bradley Frederick Baumgartner , Shanlin Duan , Yan Liu , Bob C. Robinson , Li Tang , Ka Chi Wong
发明人： Bradley Frederick Baumgartner , Shanlin Duan , Yan Liu , Bob C. Robinson , Li Tang , Ka Chi Wong
IPC分类号： G01R3312
CPC分类号： G11B20/1883 , G01R33/1207 , G11B5/012 , G11B5/82 , G11B19/04 , G11B20/1816 , G11B27/36 , G11B33/10 , G11B2005/001 , G11B2220/20 , Y10T29/47
摘要： An apparatus and method for detecting and marking delamination defects on thin film disks are disclosed. The apparatus includes a read/write (R/W) head and a burnishing head mounted on separate arms that access the disk while spinning on the test stand. The controller uses the R/W head to perform an initial magnetic test of selected areas on the disk to establish an initial defect map. The burnish head is then flown over the surface for an extended time to accelerate and open up the latent delamination defects by impacting protruding material. The R/W head is then used to perform a second magnetic test which is compared against the first test to identify the delamination defects which have been developed by the burnishing. The delamination defects are then marked with a magnetic pattern which aids in optically locating the defect during subsequent failure analysis.
摘要翻译：公开了一种用于检测和标记薄膜盘上的分层缺陷的装置和方法。该装置包括读/写（R / W）头和安装在单独的臂上的抛光头，当在测试台上旋转时，其读取磁盘。控制器使用R / W头对磁盘上所选区域进行初始磁性测试，以建立初始缺陷图。然后将抛光头在表面上飞过较长时间，以加速并通过冲击突出的材料来打开潜在的脱层缺陷。然后使用R / W头执行第二磁性测试，其与第一次测试进行比较，以识别由抛光开发的分层缺陷。然后用磁性图案标记分层缺陷，这有助于在随后的故障分析期间光学地定位缺陷。

2. 发明授权

US06771453B2 Glide slider fly height calibration method using disk spin down and slider dynamic scan 失效
标题翻译：滑动滑块飞行高度校准方法使用磁盘旋转和滑块动态扫描
公开(公告)号：US06771453B2
公开(公告)日：2004-08-03
申请号：US10011474
申请日：2001-11-05
申请人： Bradley Frederick Baumgartner , An-Chou Andrew Chen , Norman H. Chu , Shanlin Duan , Patricia Galindo , Roger Yu Lo , Connie H. Moy , Hang Fai Ngo
发明人： Bradley Frederick Baumgartner , An-Chou Andrew Chen , Norman H. Chu , Shanlin Duan , Patricia Galindo , Roger Yu Lo , Connie H. Moy , Hang Fai Ngo
IPC分类号： G11B2102
CPC分类号： G11B5/5521 , G11B5/60 , G11B33/10
摘要： A calibration method for determining the flying height of a glide slider for disk glide height testing is disclosed. The method utilizes a disk with bumps in situ on a disk glide height tester. The method automatically takes into account disk topography, mounting tolerances, and slider roll.
摘要翻译：公开了一种用于确定用于盘滑动高度测试的滑动滑块的飞行高度的校准方法。该方法在磁盘滑移高度测试仪上利用具有凸起的盘。该方法自动考虑到磁盘形状，安装公差和滑块滚动。

3. 发明授权

US06662623B2 Apparatus and method for glide height calibration of disk surfaces by use of dual-zone laser texture 失效
标题翻译：使用双区域激光纹理的盘表面滑移高度校准的装置和方法
公开(公告)号：US06662623B2
公开(公告)日：2003-12-16
申请号：US09957291
申请日：2001-09-20
申请人： Bradley Frederick Baumgartner , James Hammond Brannon , Jorge Daniel Colonia , Huyen D. Do , Shanlin Duan , Connie H. Moy , Hang Fai Ngo , Yu Lo
发明人： Bradley Frederick Baumgartner , James Hammond Brannon , Jorge Daniel Colonia , Huyen D. Do , Shanlin Duan , Connie H. Moy , Hang Fai Ngo , Yu Lo
IPC分类号： G11B582
CPC分类号： G01B11/14 , G11B23/0021 , G11B33/10 , Y10S977/881 , Y10S977/932
摘要： A disk for calibrating glide heads utilizes a dual-zone configuration of multiple laser melt bumps having selected heights. Averaging the PZT response over many bumps significantly narrows the response distribution, resulting in greater certainty and correlation of the PZT amplitude to bump height. The multiple calibration bumps are circumferentially arranged on a disk surface at a selected radius in a ring-like manner. A second head cleaning zone is provided near the inner diameter of the disk to provide for increased reproducibility of the PZT calibration response. The second zone is densely textured and serves to clean the glide head prior to its use in the calibration zone.
摘要翻译：用于校准滑行头的盘利用具有选定高度的多个激光熔融凸块的双区配置。在许多凸起上平均PZT响应显着缩小了响应分布，导致PZT振幅与凸块高度的更大的确定性和相关性。多个校准凸块以环状方式周向地布置在选定半径的盘表面上。在盘的内径附近提供第二头清洁区，以提供PZT校准响应的增加的再现性。第二个区域是密集纹理的，用于在使用前在校准区域清洁滑动头。

4. 发明授权

US06567240B2 Disk drive platter using sputter shadows thereon for determining orientation thereof 失效
标题翻译：磁盘驱动盘在其上使用溅射阴影来确定其取向
公开(公告)号：US06567240B2
公开(公告)日：2003-05-20
申请号：US09793236
申请日：2001-02-26
申请人： Bradley Frederick Baumgartner , Andrew John Buhler , Erich Chuh , Hang Fai Ngo , Alma Lujan Ortega-Avery , Bob C. Robinson , Song How Wong-Jessel , Elmer Tyree York
发明人： Bradley Frederick Baumgartner , Andrew John Buhler , Erich Chuh , Hang Fai Ngo , Alma Lujan Ortega-Avery , Bob C. Robinson , Song How Wong-Jessel , Elmer Tyree York
IPC分类号： G11B582
CPC分类号： G11B5/82
摘要： A disk for a disk drive uses a circular platter having first and second sides and a circumferential edge. The circumferential edge of the disk has four symmetrically spaced apart shadows and a fifth or additional shadow that gives the disk an asymmetrical shadow signature. The fifth shadow is offset relative to the other shadows, which have congruent arcuate lengths and separation. The fifth shadow has an arcuate length that is about half as long as those of the other shadows, and is closely spaced adjacent to one of the other shadows. The asymmetric shadow signatures of the disk is used to precisely determine both the circumferential position of the platters and their planar orientation (i.e., A-side or B-side). For example, when the disk is mounted on a tool spindle and rotated, an optical detector detects the pattern of the shadows and feeds the data to a computer system. The rotational position of the spindle also is relayed to the computer for coordinating the processing of the rotating disk. When the disk is mounted on a different tool, the same shadow signature is used to determine its planar and angular positions.
摘要翻译：用于磁盘驱动器的磁盘使用具有第一和第二侧面以及周缘的圆盘。盘的圆周边缘具有四个对称间隔开的阴影和第五或另外的阴影，其给予盘不对称的阴影签名。第五个阴影相对于其他阴影是偏移的，它们具有一致的弓形长度和分离距离。第五个阴影具有的弓形长度大约是其他阴影的一半长度，并且与其他阴影之一紧密相隔。磁盘的非对称阴影签名用于精确地确定盘片的圆周位置及其平面取向（即A侧或B侧）。例如，当盘安装在工具主轴上并旋转时，光学检测器检测阴影的图案并将数据馈送到计算机系统。主轴的旋转位置也被中继到计算机，用于协调旋转盘的处理。当磁盘安装在不同的工具上时，使用相同的阴影签名来确定其平面和角位置。

5. 发明授权

US06935925B1 System, method, and apparatus for in-situ acoustic emission monitoring of burnish heads in production during magnetic media cleaning or burnish process 失效
标题翻译：用于在磁性介质清洁或抛光过程中的生产中的抛光头的原位声发射监测的系统，方法和装置
公开(公告)号：US06935925B1
公开(公告)日：2005-08-30
申请号：US10881145
申请日：2004-06-30
申请人： Parul Agrawal , Bradley Frederick Baumgartner , Norman Chu , Charles Lee , Tony Mello , Christopher Ramm , Bob Clyde Robinson
发明人： Parul Agrawal , Bradley Frederick Baumgartner , Norman Chu , Charles Lee , Tony Mello , Christopher Ramm , Bob Clyde Robinson
IPC分类号： B24B39/06 , G11B5/84 , B24B49/00
CPC分类号： B24B39/06 , G11B5/8404
摘要： An in-situ technique for the acoustic emission monitoring of burnish heads while they are cleaning or burnishing magnetic media is described. The burnishing process is monitored and controlled to identify interaction or contact between the head and media due to, for example, burnish head damage, substrate curvature problems, and lube pick-up problems. A piezoelectric sensor is mounted on the burnish arm that holds the burnish heads. When head-disk interaction occurs, stress waves travel through the head to the sensor and an amplified signal is gathered in a tester database as an acoustic emission. Abnormal conditions will trigger an unusual emission that is detected to trigger an alert.
摘要翻译：描述了在清洁或抛光磁性介质时对抛光头进行声发射监测的原位技术。对抛光过程进行监测和控制，以识别头部和介质之间的相互作用或接触，这是由于例如抛光头损伤，基底曲率问题和润滑剂拾取问题。压电传感器安装在保持抛光头的抛光臂上。当头盘相互作用发生时，应力波通过头部传播到传感器，放大的信号作为声发射聚集在测试仪数据库中。异常情况将触发检测到异常发射以触发警报。

6. 发明授权

US07064659B2 Glide testing of disks with calibration confirmation testing by inducing collision of the slider with production disk surface 失效
标题翻译：通过引导滑块与生产磁盘表面的碰撞，通过校准确认测试来滑动测试磁盘
公开(公告)号：US07064659B2
公开(公告)日：2006-06-20
申请号：US10931316
申请日：2004-08-31
申请人： Bradley Frederick Baumgartner , Norman Chu , Patricia Galindo , Hang Fai Ngo , Yu Lo , Nalin Zhou
发明人： Bradley Frederick Baumgartner , Norman Chu , Patricia Galindo , Hang Fai Ngo , Yu Lo , Nalin Zhou
IPC分类号： G08B29/00
CPC分类号： G11B5/455 , G11B5/6005 , G11B5/6076 , G12B13/00 , Y10T29/49069 , Y10T29/49771
摘要： A method is presented for glide testing a disk which tests the glide head fly-height by inducing a collision between the glide head and a disk under test. The glide test system is initially calibrated using calibration disks. The method of the invention periodically tests the calibration without interrupting the production testing by lowering the rotation rate until the glide head collides with the rotating disk surface. The rotation rate at which the collision occurs is then compared with the value expected based on knowledge of disk samples and the initial calibration. Parameters for acceptable high and low values are established to detect changes in the glide test system performance to trigger automatic or manual recalibration.
摘要翻译：提出了一种用于滑行测试的方法，其通过引起滑动头和被测盘之间的碰撞来测试滑翔头飞行高度。滑行测试系统最初使用校准盘校准。本发明的方法通过降低旋转速率来定期测试校准而不中断生产测试，直到滑动头与旋转的盘表面碰撞。然后将碰撞发生的旋转速率与基于磁盘样本知识和初始校准的预期值进行比较。建立可接受的高和低值的参数，以检测滑行测试系统性能的变化，以触发自动或手动重新校准。

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