公开(公告)号：US08023220B2

公开(公告)日：2011-09-20

申请号：US12545773

申请日：2009-08-21

申请人： Masaki Yoshioka ,  Kei Yasuna ,  Makoto Takase ,  Ryohheita Hattori

发明人： Masaki Yoshioka ,  Kei Yasuna ,  Makoto Takase ,  Ryohheita Hattori

IPC分类号： G11B5/596

CPC分类号： G11B5/59633 ,  G11B5/59672

摘要： A method for writing servo sector sets that include a plurality of separate servo sectors on a disk so that servo sectors are present at same circumferential positions but different radial positions. The method includes reading a first servo sector set in a track with a read element such that the track includes first, second and third servo sector sets. The method also includes writing the third servo sector set with a write element at a different radial position from the read element with positional control and timing control using the first servo sector set while skipping the second servo sector set if all servo sectors of the first servo sector set are non-defective. Moreover, the method includes using positional control and timing control using the second servo sector set in the writing of the third servo sector set if the first servo sector set includes a defective servo sector.

摘要翻译： 一种用于在盘上写入包括多个单独的伺服扇区的伺服扇区组的方法，使得伺服扇区存在于相同的圆周位置但不同的径向位置。 该方法包括读取具有读取元件的轨道中设置的第一伺服扇区，使得轨道包括第一，第二和第三伺服扇区组。 该方法还包括：如果第一伺服系统的所有伺服扇区都是跳过第二伺服扇区组，则使用第一伺服扇区集进行位置控制和定时控制，将具有写元件的第三伺服扇区集合写入与读单元不同的径向位置 扇区集无缺陷。 此外，该方法包括如果第一伺服扇区集合包括有缺陷的伺服扇区，则使用在第三伺服扇区集合的写入中设置的第二伺服扇区的位置控制和定时控制。

公开(公告)号：US20110080672A1

公开(公告)日：2011-04-07

申请号：US12545773

申请日：2009-08-21

申请人： Masaki Yoshioka ,  Kei Yasuna ,  Makoto Takase ,  Ryohheita Hattori

发明人： Masaki Yoshioka ,  Kei Yasuna ,  Makoto Takase ,  Ryohheita Hattori

IPC分类号： G11B5/596

CPC分类号： G11B5/59633 ,  G11B5/59672

摘要： A method for writing servo sector sets that include a plurality of separate servo sectors on a disk so that servo sectors are present at same circumferential positions but different radial positions. The method includes reading a first servo sector set in a track with a read element such that the track includes first, second and third servo sector sets. The method also includes writing the third servo sector set with a write element at a different radial position from the read element with positional control and timing control using the first servo sector set while skipping the second servo sector set if all servo sectors of the first servo sector set are non-defective. Moreover, the method includes using positional control and timing control using the second servo sector set in the writing of the third servo sector set if the first servo sector set includes a defective servo sector.

摘要翻译： 一种用于在盘上写入包括多个单独的伺服扇区的伺服扇区组的方法，使得伺服扇区存在于相同的圆周位置但不同的径向位置。 该方法包括读取具有读取元件的轨道中设置的第一伺服扇区，使得轨道包括第一，第二和第三伺服扇区组。 该方法还包括：如果第一伺服系统的所有伺服扇区都是跳过第二伺服扇区组，则使用第一伺服扇区集进行位置控制和定时控制，将具有写元件的第三伺服扇区集合写入与读单元不同的径向位置 扇区集无缺陷。 此外，该方法包括如果第一伺服扇区集合包括有缺陷的伺服扇区，则使用在第三伺服扇区集合的写入中设置的第二伺服扇区的位置控制和定时控制。

公开(公告)号：US08873183B2

公开(公告)日：2014-10-28

申请号：US12963580

申请日：2010-12-08

申请人： Kei Yasuna ,  Tomoo Ozaki ,  Makoto Takase ,  Takao Horiguchi

发明人： Kei Yasuna ,  Tomoo Ozaki ,  Makoto Takase ,  Takao Horiguchi

IPC分类号： G11B5/596

CPC分类号： G11B5/59633 ,  G11B5/59666 ,  G11B5/59672

摘要： A system and method of writing servo write tracks to a rotating disk using a head having a read/write offset is disclosed. One embodiment utilizes a write element on the head to write the servo write tracks. A read element on the head is then positioned over the servo write tracks. The phase of a specific frequency component of the track shape error in the servo write track is measured during the positioning of the read element over the servo write track. A sine wave having a specific frequency and a phase is selected based on the measurement results. The sine wave is then applied to a servo system as a correction signal. A new servo write track is then written with the write element.

摘要翻译： 公开了一种使用具有读/写偏移量的磁头将伺服写轨迹写入旋转磁盘的系统和方法。 一个实施例利用头上的写入元件来写入伺服写入轨迹。 然后将磁头上的读取元件定位在伺服写入磁道上。 伺服写入磁道中的磁道形状误差的特定频率分量的相位在读取元件在伺服写入磁道上的定位期间被测量。 基于测量结果选择具有特定频率和相位的正弦波。 然后将正弦波作为校正信号施加到伺服系统。 然后用写入元件写入新的伺服写入轨迹。

公开(公告)号：US20110141599A1

公开(公告)日：2011-06-16

申请号：US12963580

申请日：2010-12-08

申请人： Kei Yasuna ,  Tomoo Ozaki ,  Makoto Takase ,  Takao Horiguchi

发明人： Kei Yasuna ,  Tomoo Ozaki ,  Makoto Takase ,  Takao Horiguchi

IPC分类号： G11B27/36

CPC分类号： G11B5/59633 ,  G11B5/59666 ,  G11B5/59672

摘要： A system and method of writing servo write tracks to a rotating disk using a head having a read/write offset is disclosed. One embodiment utilizes a write element on the head to write the servo write tracks. A read element on the head is then positioned over the servo write tracks. The phase of a specific frequency component of the track shape error in the servo write track is measured during the positioning of the read element over the servo write track. A sine wave having a specific frequency and a phase is selected based on the measurement results. The sine wave is then applied to a servo system as a correction signal. A new servo write track is then written with the write element.

摘要翻译： 公开了一种使用具有读/写偏移量的磁头将伺服写轨迹写入旋转磁盘的系统和方法。 一个实施例利用头上的写入元件来写入伺服写入轨迹。 然后将磁头上的读取元件定位在伺服写入磁道上。 伺服写入磁道中的磁道形状误差的特定频率分量的相位在读取元件在伺服写入磁道上的定位期间被测量。 基于测量结果选择具有特定频率和相位的正弦波。 然后将正弦波作为校正信号施加到伺服系统。 然后用写入元件写入新的伺服写入轨迹。

公开(公告)号：US20090009904A1

公开(公告)日：2009-01-08

申请号：US12215260

申请日：2008-06-25

申请人： Kei Yasuna ,  Kohji Takasaki ,  Fuminori Sai ,  Makoto Takase ,  Tomoyuki Oyama

发明人： Kei Yasuna ,  Kohji Takasaki ,  Fuminori Sai ,  Makoto Takase ,  Tomoyuki Oyama

IPC分类号： G11B21/02

CPC分类号： G11B5/59633 ,  G11B5/59666

摘要： Embodiments of the present invention provide a method of forming an initial servo-pattern for self servowrite, insusceptible to constraints of an output resolution of a driver circuit for driving an actuator, and a dynamic range. According to one embodiment, a cluster pattern made up of pattern blocks, each including a burst pattern, is written by use of a write element by pressing a head-support mechanism to a crash-stop, and a pattern block is newly written with a read element in states of being positioned at an inner peripheral side edge of the cluster pattern, an outer peripheral side edge thereof, and the center of two burst patterns included in the cluster pattern, respectively, thereby increasing a width of the cluster patterns in stages, so that an initial servo pattern for use in a propagation action is formed.

摘要翻译： 本发明的实施例提供了一种形成用于自伺服驱动的初始伺服模式的方法，其不受用于驱动致动器的驱动器电路的输出分辨率的约束和动态范围的影响。 根据一个实施例，通过将头部支撑机构按压到紧急停止，使用写入元件来写入由图案块构成的每个包括突发图案的簇图案，并且新的图案块用 读取元件分别位于簇图案的内周侧边缘，其外周侧边缘和包括在簇图案中的两个突发图案的中心，从而分级地增加簇图案的宽度 ，从而形成用于传播动作的初始伺服模式。

公开(公告)号：US20110069409A1

公开(公告)日：2011-03-24

申请号：US12504530

申请日：2009-07-16

申请人： Xuchu Zhu ,  Makoto Takase ,  Tomoo Ozaki ,  Wee Hei

发明人： Xuchu Zhu ,  Makoto Takase ,  Tomoo Ozaki ,  Wee Hei

IPC分类号： G11B21/02

CPC分类号： G11B5/59633 ,  G11B5/59638 ,  G11B5/59672

摘要： A method for forming servo patterns on a magnetic-recording disk. The method includes moving a magnetic-recording head in an opposite direction to a pattern development direction, when there is a faulty servo pattern. The method also includes positioning a write element of the magnetic recording head on a track of the faulty servo pattern and forming a reserve servo pattern at a different circumferential location from that of the faulty servo pattern. The method includes moving the magnetic-recording head in the pattern development direction. The method further includes positioning the read element on the track of the faulty servo pattern and forming a new servo pattern in the pattern development direction at the circumferential location of the faulty servo pattern on a track disposed between the track of the faulty servo pattern and an outside diameter of the magnetic-recording disk, based on data read from the reserve servo pattern.

摘要翻译： 一种用于在磁记录盘上形成伺服图案的方法。 该方法包括：当存在故障伺服模式时，将磁记录头沿与图案显影方向相反的方向移动。 该方法还包括将磁记录头的写元件定位在故障伺服模式的轨道上，并在与故障伺服模式不同的周向位置处形成备用伺服模式。 该方法包括沿图案显影方向移动磁记录头。 该方法还包括将读取的元件定位在故障伺服模式的轨道上，并且在位于故障伺服模式的轨迹之间的轨道上的故障伺服模式的圆周位置处的图案显影方向上形成新的伺服模式， 基于从备用伺服模式读取的数据，磁记录盘的外径。

公开(公告)号：US07584070B2

公开(公告)日：2009-09-01

申请号：US11177028

申请日：2005-07-07

申请人： Yasuhiro Kotani ,  Hiroaki Suzuki ,  Makoto Takase

发明人： Yasuhiro Kotani ,  Hiroaki Suzuki ,  Makoto Takase

IPC分类号： G01L25/00

CPC分类号： G06F11/2221 ,  G11B20/1816

摘要： Embodiments of the invention provide a method of testing/adjusting magnetic disk devices, in which the method allows the tests/adjustments to be conducted by solving problems due to the data sizes and characteristics of test/adjustment programs. After assembly of a magnetic disk device, setup of various parameters, magnetic disk defect registration, and other test/adjustment steps are executed. Execution of the test/adjustment programs does not require a special test apparatus since they are executed in the magnetic disk device to be tested. In addition, the test/adjustment programs are formed up of multiple phases, and each phase is sequentially executed. Adoption of this program structure keeps the tests/adjustments clear from restrictions due to the data sizes and characteristics of the test/adjustment programs.

公开(公告)号：US20070121235A1

公开(公告)日：2007-05-31

申请号：US11605649

申请日：2006-11-28

申请人： Fuminori Sai ,  Makoto Takase ,  Kohji Takasaki ,  Hiroshi Yanagisawa

发明人： Fuminori Sai ,  Makoto Takase ,  Kohji Takasaki ,  Hiroshi Yanagisawa

IPC分类号： G11B5/09 ,  G11B21/02

CPC分类号： G11B5/59633 ,  G11B5/59666

摘要： Embodiments in accordance with the present invention relate to suppressing effects of the rotational jitter of a rotating medium during self-writing of patterns on the medium. In one embodiment, patterns are written on a track TE first. While a clock frequency is modulated using the difference between the readout time and target time of each pattern PE on the track TE, patterns PF are written on a track TF after a calculated delay time from the readout of each pattern PE. During pattern writing on the track TF, any timing errors of the patterns PE are stored into memory. While the target time for each pattern PF on the track TF is being corrected using the stored timing errors of the patterns PE and the clock frequency is being modulated using the difference between the readout time and corrected target time of each pattern PF, patterns PG are written on a track TG after a calculated delay time from the readout of each pattern PF.

摘要翻译： 根据本发明的实施例涉及在图案自写入介质时抑制旋转介质的旋转抖动的影响。 在一个实施例中，模式首先写在轨道TE上。 在使用轨道TE上的每个图案PE的读出时间和目标时间之间的差来调制时钟频率的情况下，在从每个图案PE的读出计算的延迟时间之后，在轨道TF上写入图案PF。 在轨道TF上的模式写入期间，模式PE的任何定时错误都被存储到存储器中。 虽然使用存储的图案PE的定时误差来校正轨道TF上的每个图案PF的目标时间，并且使用每个图案PF的读出时间和校正的目标时间之间的差来调制时钟频率，但是图案PG是 在从每个图案PF的读出计算的延迟时间之后，在轨道TG上写入。

公开(公告)号：US20060130316A1

公开(公告)日：2006-06-22

申请号：US11313080

申请日：2005-12-19

申请人： Makoto Takase ,  Keiichiroh Kai ,  Shigemi Suganuma ,  Hiroshi Nagasawa

发明人： Makoto Takase ,  Keiichiroh Kai ,  Shigemi Suganuma ,  Hiroshi Nagasawa

IPC分类号： G11B5/127 ,  G01N27/82 ,  B23P19/00

CPC分类号： G11B33/126 ,  G11B5/40 ,  G11B5/455 ,  G11B5/5582 ,  G11B33/12 ,  Y10T29/49025 ,  Y10T29/49036 ,  Y10T29/53165

摘要： The present invention provides an improved magnetic disk drive manufacturing method that is to be employed during an interval between magnetic disk drive assembly completion and shipment. In one embodiment, a magnetic disk drive has an interface connector. The magnetic disk drive is retained by a shock absorber so that the interface connector is exposed. A testing side connector mounted on a base plate is connected to the interface connector of the magnetic disk drive that is retained by the shock absorber. A host apparatus transfers a test/adjustment program to the magnetic disk drive via the testing side connector. The magnetic disk drive executes the test/adjustment program.

摘要翻译： 本发明提供一种改进的磁盘驱动器制造方法，该方法将在磁盘驱动装置完成和装运之间的间隔期间使用。 在一个实施例中，磁盘驱动器具有接口连接器。 磁盘驱动器由减震器保持，以使接口连接器露出。 安装在基板上的测试侧连接器连接到由减震器保持的磁盘驱动器的接口连接器。 主机装置通过测试侧连接器将测试/调整程序传送到磁盘驱动器。 磁盘驱动器执行测试/调整程序。

公开(公告)号：US5970296A

公开(公告)日：1999-10-19

申请号：US165344

申请日：1998-10-02

申请人： Makoto Takase

发明人： Makoto Takase

IPC分类号： G03G15/16 ,  H05F3/02

CPC分类号： G03G15/1675

摘要： An object of the present invention is to provide an image forming apparatus which prevents transfer memory from occurring and achieves a desired potential of an image carrier (photosensitive body) when forming an image in next cycle, thereby to obtain a high-quality output image.In order to achieve the object described above, the image forming apparatus of the invention has a belt grounding device 21 which makes contact with a transfer belt 5 and is capable of switching between grounded state and ungrounded state according to the size of copy paper P. With this configuration, because only a portion not covered by the copy paper P can be grounded according the size of the copy paper P, excessive current can be prevented from flowing into a photosensitive drum 1 at this portion, thereby preventing transfer memory from occurring.

摘要翻译： 本发明的目的是提供一种图像形成装置，当在下一个周期中形成图像时，防止传送存储器发生并实现图像载体（感光体）的期望电位，从而获得高质量的输出图像。 为了实现上述目的，本发明的图像形成装置具有与转印带5接触并能够根据复印纸P的尺寸在接地状态和未接地状态之间切换的带状接地装置21。 利用这种配置，由于只有复印纸P未被覆盖的部分可以根据复印纸P的尺寸接地，所以可以防止过大的电流在该部分流入感光鼓1，从而防止转印存储器发生。