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1. 发明授权

US07221528B2 Magnetic alignment marking of hard disks 有权
标题翻译：硬盘磁对准标记
公开(公告)号：US07221528B2
公开(公告)日：2007-05-22
申请号：US11095825
申请日：2005-03-30
申请人： David S. Kuo , Jason Pressesky , Dan Nguyen
发明人： David S. Kuo , Jason Pressesky , Dan Nguyen
IPC分类号： G11B5/86
CPC分类号： G11B5/59633 , G11B5/59627
摘要： Magnetic alignment marks are recorded on a recording surface of a magnetic hard disk to mark the location where the disk is abutted against the hub of the spindle of a multiple-disk servo-writer. The alignment marks for each recording surface may be different so as to distinguish between top and bottom disk surfaces so that when the discs are assembled onto the spindle of a disk drive they may be assembled with the proper orientation, i.e., the top surface is mounted “up.” The marks may be large, low frequency patterns that are both written and detected by non contact means other than the servo-track writer's or the disk drive's heads.
摘要翻译：磁性对准标记被记录在磁性硬盘的记录表面上，以标记盘与多盘伺服写入器的主轴的轮毂抵接的位置。每个记录表面的对准标记可以是不同的，以便区分顶部和底部盘表面，使得当盘被组装到盘驱动器的主轴上时，它们可以以适当的取向组装，即，顶表面被安装 “向上。” 这些标记可以是大的，低频的图案，其被写入和非伺服磁道写入器或磁盘驱动器头部之外的非接触装置检测。

2. 发明授权

US06940678B2 Magnetic alignment marking of hard disks 失效
标题翻译：硬盘磁对准标记
公开(公告)号：US06940678B2
公开(公告)日：2005-09-06
申请号：US10340283
申请日：2003-01-10
申请人： David S. Kuo , Jason Pressesky , Dan Nguyen
发明人： David S. Kuo , Jason Pressesky , Dan Nguyen
IPC分类号： G11B5/596
CPC分类号： G11B5/59633 , G11B5/59627
摘要： Magnetic alignment marks are recorded on a recording surface of a magnetic hard disk to mark the location where the disk is abutted against the hub of the spindle of a multiple-disk servo-writer. The alignment marks for each recording surface may be different so as to distinguish between top and bottom disk surfaces so that when the discs are assembled onto the spindle of a disk drive they may be assembled with the proper orientation, i.e., the top surface is mounted “up.” The marks may be large, low frequency patterns that are both written and detected by non contact means other than the servo-track writer's or the disk drive's heads.
摘要翻译：磁性对准标记被记录在磁性硬盘的记录表面上，以标记盘与多盘伺服写入器的主轴的轮毂抵接的位置。每个记录表面的对准标记可以是不同的，以便区分顶部和底部盘表面，使得当盘被组装到盘驱动器的主轴上时，它们可以以适当的取向组装，即，顶表面被安装 “向上。” 这些标记可以是大的，低频的图案，其被写入和非伺服磁道写入器或磁盘驱动器头部之外的非接触装置检测。

3. 发明申请

US20050231841A1 Magnetic alignment marking of hard disks 有权
公开(公告)号：US20050231841A1
公开(公告)日：2005-10-20
申请号：US11095825
申请日：2005-03-30
申请人： David Kuo , Jason Pressesky , Dan Nguyen
发明人： David Kuo , Jason Pressesky , Dan Nguyen
IPC分类号： G11B5/596 , G11B5/09 , G11B5/02 , G11B5/86 , G11B21/02
CPC分类号： G11B5/59633 , G11B5/59627
摘要： Magnetic alignment marks are recorded on a recording surface of a magnetic hard disk to mark the location where the disk is abutted against the hub of the spindle of a multiple-disk servo-writer. The alignment marks for each recording surface may be different so as to distinguish between top and bottom disk surfaces so that when the discs are assembled onto the spindle of a disk drive they may be assembled with the proper orientation, i.e., the top surface is mounted “up.” The marks may be large, low frequency patterns that are both written and detected by non contact means other than the servo-track writer's or the disk drive's heads.

4. 发明申请

US20050259769A1 Quadrature phase shift interferometer (QPSI) decoder and method of decoding 有权
标题翻译：正交相移干涉仪（QPSI）解码器和解码方法
公开(公告)号：US20050259769A1
公开(公告)日：2005-11-24
申请号：US10782875
申请日：2004-02-23
申请人： Jianmin Wang , Jason Pressesky
发明人： Jianmin Wang , Jason Pressesky
IPC分类号： G01B9/02 , G11B5/82 , H04L1/00
CPC分类号： G11B5/82 , G01B9/02081 , G01B9/02083 , G01B2290/45 , G01B2290/70
摘要： An arrangement and method for reliably finding the wave form extrema of interference signals produced by a quadrature phase shift interferometer (QPSI) takes advantage of the quadrature property of I and Q signals. The zero-crossing points in the I and Q signals are determined. Peak detection is performed for peaks and valleys in the Q signal in close proximity to the zero-crossing points in the I signal, and for peaks and valleys in the I signal in close proximity to the zero-crossing points in the Q signal. These represent the maximum and minimum points of the I and Q signals. From these points, intensity envelopes are created and QPSI phase wrapping is performed to determine the phase angle and ultimately, out-of-plane displacement may be determined.
摘要翻译：用于可靠地发现由正交相移干涉仪（QPSI）产生的干扰信号波形的布置和方法利用了I和Q信号的正交特性。确定I和Q信号中的过零点。对Q信号中的峰值和峰值进行峰值检测，其接近于I信号中的过零点，以及在靠近Q信号中的过零点的I信号中的峰值和谷值。这些表示I和Q信号的最大和最小点。从这些点，产生强度包络，并且执行QPSI相位缠绕以确定相位角，并且最终可以确定面外位移。

5. 发明申请

US20050083047A1 High throughput missing pattern detector for servo printed recording medial 失效
标题翻译：高通量缺失型号检测器，用于伺服打印记录
公开(公告)号：US20050083047A1
公开(公告)日：2005-04-21
申请号：US10685680
申请日：2003-10-15
申请人： Shih-Fu Lee , David Kuo , Jason Pressesky
发明人： Shih-Fu Lee , David Kuo , Jason Pressesky
IPC分类号： G11B5/00 , G11B5/012 , G11B5/74 , G11B5/82 , G11B5/86 , G11B27/36
CPC分类号： B82Y10/00 , G11B5/012 , G11B5/74 , G11B5/743 , G11B5/82 , G11B5/865 , G11B27/36 , G11B2005/001 , G11B2220/20
摘要： The present invention provides a method for detecting missing servo patterns on printed recording media. In general, the method first comprises the step of generating a map of anticipated servo burst patterns for a magnetic medium. The magnetic medium is typically a magnetic storage disc. Next, the magnetic medium is placed onto a disc reading assembly. Using the disc reading assembly, individual servo bursts on the magnetic medium are identified. In one embodiment, signals from the magnetic medium are processed through a frequency down conversion process, coupled with band pass filtering and rms-to-DC conversion. This enables higher throughput of signal processing. A map of identified servo bursts on the magnetic medium can then be generated. The map of identified servo bursts is then compared with the map of anticipated servo burst patterns. In this way, missing servo bursts can be detected.
摘要翻译：本发明提供一种用于检测印刷的记录介质上缺少的伺服图案的方法。通常，该方法首先包括产生磁介质的预期伺服脉冲串图形的映射的步骤。磁介质通常是磁存储盘。接下来，将磁性介质放置在盘读取组件上。使用盘读取组件，识别磁介质上的各个伺服脉冲串。在一个实施例中，来自磁介质的信号通过降频转换处理，与带通滤波和均方根到直流转换相结合。这样可以实现更高的信号处理吞吐量。然后可以产生在磁介质上识别的伺服脉冲串的映射。然后将所识别的伺服脉冲串的映射与预期的伺服脉冲串模式的映射进行比较。以这种方式，可以检测到丢失的伺服脉冲串。

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