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公开(公告)号：US20070247742A1
公开(公告)日：2007-10-25
申请号：US11788510
申请日：2007-04-19
CPC分类号： G11B5/59633 , G11B5/59666
摘要： Embodiments in accordance with the present invention ensure that the pitch of a servo write track is accurately controlled. According to one embodiment of the present invention, a Self Servo Write (SSW) uses different methods and sequences to identify read-write offsets (RWOs) and calculate target positions in inner and outer diameter sides of a magnetic disk. In the inner diameter-side area, the SSW controller uses the readout of a radial pattern written on a recording surface and a reference value to identify the RWO. The SSW controller uses the RWO value identified in the inner diameter-side area to anticipate an RWO value in the outer diameter-side area. In the outer diameter-side area, the SSW controller uses the anticipated RWO value to determine the target position of each servo write track.
摘要翻译： 根据本发明的实施例确保伺服写入磁道的音调被精确地控制。 根据本发明的一个实施例，自动伺服写入（SSW）使用不同的方法和序列来识别读写偏移（RWO）并计算磁盘的内径和外径侧的目标位置。 在内径侧区域中，SSW控制器使用写在记录表面上的径向图案的读出和参考值来识别RWO。 SSW控制器使用在内径侧区域中识别的RWO值来预测外径侧区域中的RWO值。 在外径侧区域中，SSW控制器使用预期的RWO值来确定每个伺服写入轨迹的目标位置。
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公开(公告)号：US07573669B2
公开(公告)日：2009-08-11
申请号：US11788510
申请日：2007-04-19
CPC分类号： G11B5/59633 , G11B5/59666
摘要： Embodiments in accordance with the present invention ensure that the pitch of a servo write track is accurately controlled. According to one embodiment of the present invention, a Self Servo Write (SSW) uses different methods and sequences to identify read-write offsets (RWOs) and calculate target positions in inner and outer diameter sides of a magnetic disk. In the inner diameter-side area, the SSW controller uses the readout of a radial pattern written on a recording surface and a reference value to identify the RWO. The SSW controller uses the RWO value identified in the inner diameter-side area to anticipate an RWO value in the outer diameter-side area. In the outer diameter-side area, the SSW controller uses the anticipated RWO value to determine the target position of each servo write track.
摘要翻译： 根据本发明的实施例确保伺服写入磁道的音调被精确地控制。 根据本发明的一个实施例，自动伺服写入（SSW）使用不同的方法和序列来识别读写偏移（RWO）并计算磁盘的内径和外径侧的目标位置。 在内径侧区域中，SSW控制器使用写在记录表面上的径向图案的读出和参考值来识别RWO。 SSW控制器使用在内径侧区域中识别的RWO值来预测外径侧区域中的RWO值。 在外径侧区域中，SSW控制器使用预期的RWO值来确定每个伺服写入轨迹的目标位置。
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公开(公告)号：US20070253095A1
公开(公告)日：2007-11-01
申请号：US11796516
申请日：2007-04-26
CPC分类号： G11B5/024 , G11B5/59666
摘要： Embodiments in accordance with the present invention control pitch variations that are not observed in self servo write (SSW). According to one embodiment of the present invention, an outer radius side area of a magnetic disk is erased using an external magnetic field, and an inner radius side area is subjected to self erase using a head. The magnetization state in the base of the inner radius side area is different from that of the outer radius side area before pattern writing. Therefore, in the inner radius side area and the outer radius side area, even if a radial pattern of the same pitch is read, the different APCs are measured. With SSW of this embodiment, a reference APC used in the inner radius side area is different from that used in the outer radius side area. In this manner, the pitch variation is prevented.
摘要翻译： 根据本发明的实施例控制在自伺服写入（SSW）中未观察到的音调变化。 根据本发明的一个实施例，使用外部磁场擦除磁盘的外半径侧区域，并且使用磁头对内半径侧区域进行自擦除。 在内部半径侧区域的基部中的磁化状态与图案写入之前的外半径侧区域的磁化状态不同。 因此，在内半径侧区域和外半径侧区域中，即使读取了相同节距的径向图案，也测量不同的APC。 在本实施方式的SSW中，内径侧区域使用的基准APC与外径侧区域不同。 以这种方式，可以防止间距变化。
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4.发明授权Disk drive, method for measuring clearance and method for writing servo patterns 有权磁盘驱动器，测量间隙的方法和写入伺服模式的方法公开(公告)号：US08018673B2
公开(公告)日：2011-09-13
申请号：US12618685
申请日：2009-11-13
CPC分类号： G11B5/6005 , G11B5/59633 , G11B5/59638 , G11B5/6064
摘要： A disk drive. The disk drive includes a plurality of head-sliders, an actuator, a plurality of clearance adjustment sections, and a controller. Each head-slider includes a slider and a magnetic-recording head on the slider for accessing a disk for storing data. The plurality of head-sliders is secured to the actuator that is configured to move the plurality of head-sliders concurrently. Each clearance adjustment section corresponds to each head-slider of the plurality of head-sliders and adjusts a clearance of the corresponding head-slider. In addition, the controller is configured to position the actuator by servo control with a first head-slider selected from the plurality of head-sliders, to change a clearance of a second head-slider different from the first head-slider by controlling a clearance adjustment section of the second head-slider to bring the second head-slider into contact with a disk, and to detect the contact to measure the clearance of the second head-slider.
摘要翻译： 磁盘驱动器 磁盘驱动器包括多个磁头滑块，致动器，多个间隙调整部分和控制器。 每个头部滑动器包括滑动器和滑块上的磁记录头，用于访问用于存储数据的磁盘。 多个头部滑块被固定到致动器，其被构造成同时移动多个头部滑块。 每个间隙调节部分对应于多个头部滑块中的每个头部滑块，并且调整相应的头部 - 滑块的间隙。 此外，控制器被配置为通过伺服控制来定位致动器，其中第一头滑块选自多个头部滑块，以通过控制间隙来改变与第一头部滑块不同的第二头部滑块的间隙 调节部分，使第二磁头滑块与磁盘接触，并检测接触件以测量第二磁头滑块的间隙。
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5.发明申请DISK DRIVE, METHOD FOR MEASURING CLEARANCE AND METHOD FOR WRITING SERVO PATTERNS 有权磁盘驱动器，用于测量清除的方法和用于写入服务器模式的方法公开(公告)号：US20100123970A1
公开(公告)日：2010-05-20
申请号：US12618685
申请日：2009-11-13
CPC分类号： G11B5/6005 , G11B5/59633 , G11B5/59638 , G11B5/6064
摘要： A disk drive. The disk drive includes a plurality of head-sliders, an actuator, a plurality of clearance adjustment sections, and a controller. Each head-slider includes a slider and a magnetic-recording head on the slider for accessing a disk for storing data. The plurality of head-sliders is secured to the actuator that is configured to move the plurality of head-sliders concurrently. Each clearance adjustment section corresponds to each head-slider of the plurality of head-sliders and adjusts a clearance of the corresponding head-slider. In addition, the controller is configured to position the actuator by servo control with a first head-slider selected from the plurality of head-sliders, to change a clearance of a second head-slider different from the first head-slider by controlling a clearance adjustment section of the second head-slider to bring the second head-slider into contact with a disk, and to detect the contact to measure the clearance of the second head-slider.
摘要翻译： 磁盘驱动器 磁盘驱动器包括多个磁头滑块，致动器，多个间隙调整部分和控制器。 每个头部滑动器包括滑动器和滑块上的磁记录头，用于访问用于存储数据的磁盘。 多个头部滑块被固定到致动器，其被构造成同时移动多个头部滑块。 每个间隙调节部分对应于多个头部滑块中的每个头部滑块，并且调整相应的头部 - 滑块的间隙。 此外，控制器被配置为通过伺服控制来定位致动器，其中第一头滑块选自多个头部滑块，以通过控制间隙来改变与第一头部滑块不同的第二头部滑块的间隙 调节部分，使第二磁头滑块与磁盘接触，并检测接触件以测量第二磁头滑块的间隙。
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6.发明授权Data storage device, recording medium, servo writing method, and data reading/writing method 有权数据存储装置，记录介质，伺服写入方式和数据读/写方式公开(公告)号：US07054090B2
公开(公告)日：2006-05-30
申请号：US10601168
申请日：2003-06-19
IPC分类号： G11B21/02
CPC分类号： G11B5/59633 , G11B21/02
摘要： Disclosed is a data storage device to provide servo patterns of a track pitch individually consistent with head characteristics (writing width, and reading width) in a recording medium of a hard disk device. The data storage device is provided with a disk having pitch information indicating a track pitch recorded in a predetermined area, and a head for scanning the disk to read the TPI ID and reading/writing data from/in the disk by being subjected to seeking control based on the TPI ID. The TPI ID is recorded as a part of a servo pattern in a TPI ID embedded area provided in an outer periphery of a data area of the disk.
摘要翻译： 公开了一种数据存储装置，用于提供与硬盘装置的记录介质中的头部特性（写入宽度和读取宽度）独立一致的轨道间距的伺服模式。 数据存储装置设置有具有指示记录在预定区域中的轨道间距的音高信息的盘，以及用于扫描盘以读取TPI ID并通过进行寻道控制从盘读取/写入数据的头 基于TPI ID。 在设置在盘的数据区的外围的TPI ID嵌入区域中记录TPI ID作为伺服模式的一部分。
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7.发明申请Method of servo pattern writing on recording surface and data storage device 审中-公开记录表面和数据存储设备上伺服模式写入的方法公开(公告)号：US20070247741A1
公开(公告)日：2007-10-25
申请号：US11788490
申请日：2007-04-20
申请人： Kyo Akagi , Takehiko Hamaguchi , Atsushi Takeichi
发明人： Kyo Akagi , Takehiko Hamaguchi , Atsushi Takeichi
CPC分类号： G11B5/59655 , G11B5/024
摘要： In an embodiment of the present invention, with Self Servo Write (SSW), a head slider is used to perform AC erase to a recording surface of a magnetic disk. The AC erase is performed asynchronously to every track. A frequency for use with AC erase, i.e., a frequency of an AC erase pattern is three times or higher than a burst frequency of a product servo pattern or a burst frequency of a radial pattern. By satisfying such requirements, for the magnetic disk of vertical magnetic recording, it becomes possible to substantially stop adversely affecting pattern reading in an AC erase area.
摘要翻译： 在本发明的一个实施例中，使用自动伺服写入（SSW），磁头滑动器用于对磁盘的记录表面执行AC擦除。 AC擦除与每个轨道异步执行。 用于AC擦除的频率，即AC擦除模式的频率是产品伺服模式的突发频率或径向图案的突发频率的三倍或更高。 通过满足这种要求，对于垂直磁记录磁盘，可以基本上停止对交流擦除区域中的图形读取的不利影响。
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公开(公告)号：US20090300907A1
公开(公告)日：2009-12-10
申请号：US12315140
申请日：2008-11-26
申请人： Kyo Akagi , Kensuke Ishiwata , Takashi Kouno , Atsushi Takeichi , Kenji Kuroki , Toshihiko Iwaisako
发明人： Kyo Akagi , Kensuke Ishiwata , Takashi Kouno , Atsushi Takeichi , Kenji Kuroki , Toshihiko Iwaisako
IPC分类号： G11B5/127
CPC分类号： G11B33/148 , G11B25/043 , G11B33/1486 , Y10T29/53165
摘要： Embodiments of the present invention provide a method for manufacturing a magnetic disk unit, the method permitting easy and efficient introduction of a low-density gas into the enclosure. According to one embodiment, an enclosure of the magnetic disk unit has a gas inlet and a gas outlet, each of which is provided with a filter. When the enclosure is filled with helium, the mass flow rate of helium being supplied to the gas inlet is detected and the mass flow rate of helium being supplied to the gas inlet is controlled according to the thus detected mass flow rate of helium.
摘要翻译： 本发明的实施例提供一种用于制造磁盘单元的方法，该方法允许将低密度气体容易且有效地引入到外壳中。 根据一个实施例，磁盘单元的外壳具有气体入口和气体出口，每个气体出口设置有过滤器。 当外壳填充有氦时，检测到供给到气体入口的氦的质量流量，并根据所检测到的氦质量流量来控制供给气体入口的氦的质量流量。
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公开(公告)号：US06614614B1
公开(公告)日：2003-09-02
申请号：US09445792
申请日：1999-12-10
IPC分类号： G11B5596
CPC分类号： G11B5/59633
摘要： The invention relates to a method for writing servo patterns on a data recording disk of a disk drive device. A read/write head is stopped at a reference position on the data recording disk, then the read/write head is moved along a radial direction of the data recording disk from the reference position, then a determination is made as to whether the data recording disk has a sufficient width along the radial direction to write a predetermined number of servo tracks, or not, then the servo patterns are written on the servo tracks if the data recording a disk has the sufficient width.
摘要翻译： 本发明涉及一种在盘驱动装置的数据记录盘上写入伺服模式的方法。 读/写头停在数据记录盘上的参考位置，然后读/写头从参考位置沿数据记录盘的径向方向移动，然后确定数据记录 磁盘沿着径向方向具有足够的宽度以写入预定数量的伺服磁道，则如果记录磁盘的数据具有足够的宽度，则伺服模式被写入伺服磁道。
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