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    Testing magnetic disk performance with a single slider simulating sliders of various disk drive systems
    3.
    发明授权
    Testing magnetic disk performance with a single slider simulating sliders of various disk drive systems 有权
    使用单个滑块测试磁盘性能，模拟各种磁盘驱动器系统的滑块

    公开(公告)号：US08174783B2

    公开(公告)日：2012-05-08

    申请号：US12508363

    申请日：2009-07-23

    申请人： Shanlin Duan ,  Zhen Jin ,  Jane Jie Zhang ,  Kezhao Zhang

    发明人： Shanlin Duan ,  Zhen Jin ,  Jane Jie Zhang ,  Kezhao Zhang

    IPC分类号： G11B27/36

    CPC分类号： G11B5/607 ,  G11B5/455

    摘要： Magnetic disk drive systems and associated methods are described for testing magnetic disk performance for certification with a plurality of magnetic disk drive systems prior to installation. The test system may position a slider at a first spacing between the magnetic disk in the slider and simulate the recording performance of a disk drive system with the magnetic disk at the first spacing. The disk drive test system may then transfer a control signal to a heating element in the slider to move the slider to a different spacing between the magnetic disk and the slider to simulate the recording performance of another disk drive system. The test system may, thus, use a single slider to certify a magnetic disk with a plurality of disk drive systems.

    摘要翻译： 描述了磁盘驱动器系统和相关方法，用于在安装之前用多个磁盘驱动器系统测试用于认证的磁盘性能。 测试系统可以将滑块定位在滑块中的磁盘之间的第一间隔处，并以第一间距模拟磁盘驱动器系统的记录性能。 然后，磁盘驱动器测试系统可以将控制信号传送到滑块中的加热元件，以将滑块移动到磁盘和滑块之间的不同间隔，以模拟另一磁盘驱动器系统的记录性能。 因此，测试系统可以使用单个滑动器来证实具有多个磁盘驱动器系统的磁盘。

    SIMULATING DISCRETE TRACK MEDIA WITH CONTINUOUS MEDIA FOR HEAD EVALUATION
    4.
    发明申请
    SIMULATING DISCRETE TRACK MEDIA WITH CONTINUOUS MEDIA FOR HEAD EVALUATION 有权
    用连续介质模拟离散跟踪介质进行头部评估

    公开(公告)号：US20120113538A1

    公开(公告)日：2012-05-10

    申请号：US12941482

    申请日：2010-11-08

    申请人： Kezhao Zhang ,  Jizhong He ,  Shanlin Duan ,  Jane Jie Zhang ,  Zhupei Shi

    发明人： Kezhao Zhang ,  Jizhong He ,  Shanlin Duan ,  Jane Jie Zhang ,  Zhupei Shi

    IPC分类号： G11B27/36

    CPC分类号： G11B27/36 ,  G11B5/455 ,  G11B5/743 ,  G11B2220/2516

    摘要： Approaches for a testing device for selecting a discrete track media (DTM) format for use with a particular head of a hard-disk drive (HDD). The testing device comprises a continuous magnetic-recording disk, rotatably mounted on a spindle, which stores data using a continuous media format. The testing device also comprises a testing module configured to simulate reading data, stored using a discrete track media (DTM) format, from the continuous magnetic-recording medium. Advantageously, testing time and cost is reduced as both discrete track media (DTM) disks and expensive discrete track media (DTM) recording testing hardware are not required to select the optimal a discrete track media (DTM) format for use with a particular head of a hard-disk drive (HDD). In addition, embodiments may be used to optimize features of the tracks of the DTM disk, such as the land to groove ratio.

    摘要翻译： 用于选择与硬盘驱动器（HDD）的特定头部一起使用的离散轨道介质（DTM）格式的测试设备的方法。 测试装置包括可旋转地安装在主轴上的连续磁记录盘，其使用连续的媒体格式存储数据。 测试装置还包括被配置成模拟从连续磁记录介质中使用离散轨道介质（DTM）格式存储的读取数据的测试模块。 有利的是，测试时间和成本被降低，因为不需要离散轨道介质（DTM）盘和昂贵的离散轨道介质（DTM）记录测试硬件来选择最佳的离散轨道介质（DTM）格式，以用于特定的头 硬盘驱动器（HDD）。 此外，可以使用实施例来优化DTM盘的轨道的特征，例如陆地与凹槽之比。

    Determination of the quality of an erase process for perpendicular magnetic recording disks
    5.
    发明授权
    Determination of the quality of an erase process for perpendicular magnetic recording disks 有权
    确定垂直磁记录盘擦除过程的质量

    公开(公告)号：US07969675B2

    公开(公告)日：2011-06-28

    申请号：US12266950

    申请日：2008-11-07

    申请人： Shanlin Duan ,  Zhupei Shi ,  Jane Jie Zhang ,  Kezhao Zhang

    发明人： Shanlin Duan ,  Zhupei Shi ,  Jane Jie Zhang ,  Kezhao Zhang

    IPC分类号： G11B27/36 ,  G11B5/03

    CPC分类号： G11B27/36 ,  G11B5/4555 ,  G11B19/048 ,  G11B20/1816 ,  G11B20/182 ,  G11B2220/2516

    摘要： Methods and test systems are disclosed for determining the quality of an erase process for perpendicular magnetic recording (PMR) disks. After performing an erase process on a PMR disk and before the PMR disk is assembled into a hard disk drive, a first test pattern of magnetization pulses is written to a region of the PMR disk. A second test pattern is subsequently read from the region of the PMR disk. The second pattern of magnetization pulses is analyzed in relation to the first test pattern and measured to determine the quality of the erase process.

    摘要翻译： 公开了用于确定垂直磁记录（PMR）盘的擦除处理的质量的方法和测试系统。 在PMR磁盘上执行擦除处理之后，在将PMR磁盘组装到硬盘驱动器之前，将磁化脉冲的第一测试图形写入PMR磁盘的区域。 随后从PMR磁盘的区域读取第二测试模式。 相对于第一测试图案分析磁化脉冲的第二图案，并测量以确定擦除过程的质量。

    Simulating discrete track media with continuous media for head evaluation
    6.
    发明授权
    Simulating discrete track media with continuous media for head evaluation 有权
    模拟具有连续介质的离散轨道介质进行头部评估

    公开(公告)号：US08395857B2

    公开(公告)日：2013-03-12

    申请号：US12941482

    申请日：2010-11-08

    申请人： Kezhao Zhang ,  Jizhong He ,  Shanlin Duan ,  Jane Jie Zhang ,  Zhupei Shi

    发明人： Kezhao Zhang ,  Jizhong He ,  Shanlin Duan ,  Jane Jie Zhang ,  Zhupei Shi

    IPC分类号： G11B27/36 ,  G11B5/09

    CPC分类号： G11B27/36 ,  G11B5/455 ,  G11B5/743 ,  G11B2220/2516

    摘要： Approaches for a testing device for selecting a discrete track media (DTM) format for use with a particular head of a hard-disk drive (HDD). The testing device comprises a continuous magnetic-recording disk, rotatably mounted on a spindle, which stores data using a continuous media format. The testing device also comprises a testing module configured to simulate reading data, stored using a discrete track media (DTM) format, from the continuous magnetic-recording medium. Advantageously, testing time and cost is reduced as both discrete track media (DTM) disks and expensive discrete track media (DTM) recording testing hardware are not required to select the optimal a discrete track media (DTM) format for use with a particular head of a hard-disk drive (HDD). In addition, embodiments may be used to optimize features of the tracks of the DTM disk, such as the land to groove ratio.

    摘要翻译： 用于选择与硬盘驱动器（HDD）的特定头部一起使用的离散轨道介质（DTM）格式的测试设备的方法。 测试装置包括可旋转地安装在主轴上的连续磁记录盘，其使用连续的媒体格式存储数据。 测试装置还包括被配置成模拟从连续磁记录介质中使用离散轨道介质（DTM）格式存储的读取数据的测试模块。 有利的是，测试时间和成本被降低，因为不需要离散轨道介质（DTM）盘和昂贵的离散轨道介质（DTM）记录测试硬件来选择最佳的离散轨道介质（DTM）格式，以用于特定的头 硬盘驱动器（HDD）。 此外，可以使用实施例来优化DTM盘的轨道的特征，例如陆地与凹槽之比。

    DETERMINATION OF THE QUALITY OF AN ERASE PROCESS FOR PERPENDICULAR MAGNETIC RECORDING DISKS
    7.
    发明申请
    DETERMINATION OF THE QUALITY OF AN ERASE PROCESS FOR PERPENDICULAR MAGNETIC RECORDING DISKS 有权
    确定磁性记录磁盘的擦除过程质量

    公开(公告)号：US20100118423A1

    公开(公告)日：2010-05-13

    申请号：US12266950

    申请日：2008-11-07

    申请人： Shanlin Duan ,  Zhupei Shi ,  Jane Jie Zhang ,  Kezhao Zhang

    发明人： Shanlin Duan ,  Zhupei Shi ,  Jane Jie Zhang ,  Kezhao Zhang

    IPC分类号： G11B27/036

    CPC分类号： G11B27/36 ,  G11B5/4555 ,  G11B19/048 ,  G11B20/1816 ,  G11B20/182 ,  G11B2220/2516

    摘要： Methods and test systems are disclosed for determining the quality of an erase process for perpendicular magnetic recording (PMR) disks. After performing an erase process on a PMR disk and before the PMR disk is assembled into a hard disk drive, a first test pattern of magnetization pulses is written to a region of the PMR disk. A second test pattern is subsequently read from the region of the PMR disk. The second pattern of magnetization pulses is analyzed in relation to the first test pattern and measured to determine the quality of the erase process.

    摘要翻译： 公开了用于确定垂直磁记录（PMR）盘的擦除处理的质量的方法和测试系统。 在PMR磁盘上执行擦除处理之后，在将PMR磁盘组装到硬盘驱动器之前，将磁化脉冲的第一测试图形写入PMR磁盘的区域。 随后从PMR磁盘的区域读取第二测试模式。 相对于第一测试图案分析磁化脉冲的第二图案，并测量以确定擦除过程的质量。

    TESTING MAGNETIC DISK PERFORMANCE WITH A SINGLE SLIDER SIMULATING SLIDERS OF VARIOUS DISK DRIVE SYSTEMS
    8.
    发明申请
    TESTING MAGNETIC DISK PERFORMANCE WITH A SINGLE SLIDER SIMULATING SLIDERS OF VARIOUS DISK DRIVE SYSTEMS 有权
    使用各种滑动模拟滑动驱动系统测试磁盘性能

    公开(公告)号：US20110019298A1

    公开(公告)日：2011-01-27

    申请号：US12508363

    申请日：2009-07-23

    申请人： Shanlin Duan ,  Zhen Jin ,  Jane Jie Zhang ,  Kazhao Zhang

    发明人： Shanlin Duan ,  Zhen Jin ,  Jane Jie Zhang ,  Kazhao Zhang

    IPC分类号： G11B27/36

    CPC分类号： G11B5/607 ,  G11B5/455

    摘要： Magnetic disk drive systems and associated methods are described for testing magnetic disk performance for certification with a plurality of magnetic disk drive systems prior to installation. The test system may position a slider at a first spacing between the magnetic disk in the slider and simulate the recording performance of a disk drive system with the magnetic disk at the first spacing. The disk drive test system may then transfer a control signal to a heating element in the slider to move the slider to a different spacing between the magnetic disk and the slider to simulate the recording performance of another disk drive system. The test system may, thus, use a single slider to certify a magnetic disk with a plurality of disk drive systems.

    摘要翻译： 描述了磁盘驱动器系统和相关方法，用于在安装之前用多个磁盘驱动器系统测试用于认证的磁盘性能。 测试系统可以将滑块定位在滑块中的磁盘之间的第一间隔处，并以第一间距模拟磁盘驱动器系统的记录性能。 然后，磁盘驱动器测试系统可以将控制信号传送到滑块中的加热元件，以将滑块移动到磁盘和滑块之间的不同间隔，以模拟另一磁盘驱动器系统的记录性能。 因此，测试系统可以使用单个滑动器来证实具有多个磁盘驱动器系统的磁盘。

    Method and system for testing of magnetic disks using F-BER
    9.
    发明申请
    Method and system for testing of magnetic disks using F-BER 失效
    使用F-BER测试磁盘的方法和系统

    公开(公告)号：US20080062549A1

    公开(公告)日：2008-03-13

    申请号：US11515164

    申请日：2006-09-01

    申请人： Shanlin Duan ,  Zhupei Shi ,  Li Tang ,  Jane Jie Zhang

    发明人： Shanlin Duan ,  Zhupei Shi ,  Li Tang ,  Jane Jie Zhang

    IPC分类号： G11B27/36 ,  G11B5/09

    CPC分类号： G11B19/048

    摘要： Spinstand test improvement that measures Functional Byte Error Rate (F-BER) of a disk. The F-BER is correlated to the BER of a disk. The F-BER test is faster than a BER test. The F-BER test is incorporated into a spinstand tester or the software associated with a spinstand tester.

    摘要翻译： Spinstand测试改进，用于测量磁盘的功能字节错误率（F-BER）。 F-BER与磁盘的BER相关。 F-BER测试比BER测试更快。 F-BER测试被并入到一个纺锤体测试仪或与一个纺锤体测试仪相关联的软件中。

    System, method, and apparatus for detecting signal-to-noise ratio decay in perpendicular magnetic recording
    10.
    发明授权
    System, method, and apparatus for detecting signal-to-noise ratio decay in perpendicular magnetic recording 失效
    用于检测垂直磁记录中信噪比衰减的系统，方法和装置

    公开(公告)号：US07173415B1

    公开(公告)日：2007-02-06

    申请号：US11189594

    申请日：2005-07-26

    申请人： Shanlin Duan ,  Jizhong He ,  Zhupei Shi ,  Jane Jie Zhang

    发明人： Shanlin Duan ,  Jizhong He ,  Zhupei Shi ,  Jane Jie Zhang

    IPC分类号： G01R33/12

    CPC分类号： G01R33/1207 ,  G11B5/012 ,  G11B5/02 ,  G11B5/09 ,  G11B5/4555 ,  G11B2005/001 ,  G11B2005/0021

    摘要： A magnetic test module runs on a spin stand to detect amplitude decay and noise evolution at the same time. Signal-to-noise ratio (SNR) decay is directly measured. The recording performance is correlated better with SNR instead of signal only. The thermal stability of the system is evaluated more accurately with this SNR decay method. A heater is placed under the media disk, and a remote sensing thermometer and temperature controller form a subsystem to set up desired environmental temperature. The heater creates a heated band and the read/write head flies above the heated band. The temperature control system may be removed when SNR decay measurement is performed under room temperature.

    摘要翻译： 磁性测试模块在旋转架上运行，以同时检测振幅衰减和噪声演变。 直接测量信噪比（SNR）衰减。 记录性能与SNR而不是仅信号相关性更好。 采用这种SNR衰减方法，更准确地评估了系统的热稳定性。 将加热器放置在介质盘下方，并且遥感温度计和温度控制器形成子系统以建立所需的环境温度。 加热器产生加热带，读/写头飞过加热带。 当在室温下进行SNR衰减测量时，可以去除温度控制系统。