公开(公告)号：US5568331A

公开(公告)日：1996-10-22

申请号：US603320

申请日：1990-10-25

申请人： Kyo Akagi ,  Masaaki Futamoto ,  Fumio Kugiya ,  Yoshinori Miyamura ,  Hisashi Takano ,  Yoshibumi Matsuda ,  Mikio Suzuki ,  Takeshi Nakao ,  Takayuki Munemoto ,  Hirotsugu Fukuoka ,  Makoto Aihara ,  Tokuho Takagaki ,  Hajime Aoi ,  Yosuke Seo

发明人： Kyo Akagi ,  Masaaki Futamoto ,  Fumio Kugiya ,  Yoshinori Miyamura ,  Hisashi Takano ,  Yoshibumi Matsuda ,  Mikio Suzuki ,  Takeshi Nakao ,  Takayuki Munemoto ,  Hirotsugu Fukuoka ,  Makoto Aihara ,  Tokuho Takagaki ,  Hajime Aoi ,  Yosuke Seo

IPC分类号： G11B5/584 ,  G11B5/596

CPC分类号： G11B5/59688 ,  G11B5/584

摘要： A method and device of head positioning in an information recording/reading device in which a magnetic recording medium with data tracks for recording information thereon is provided and a magnetic head is positioned on the data track to record/read out the information, wherein a data signal is recorded in the data recording layer of said recording medium, a servo signal is recorded in the servo signal recording layer located below said data signal recording layer, said data signal is read out using a data magnetic head whereas said servo signal is read out using a servo magnetic head, and the frequency of said servo signal is within the range of the gap-null frequency of said data magnetic head whereas the frequency of said data signal is within the range of the gap-null frequency of said servo magnetic head, and said magnetic head is positioned on the data track on the basis of said servo signal. A method and device of head positioning in an information recording/reading device in which a magnetic recording medium with data tracks for recording information thereon is provided and a magnetic head is positioned on the data track to record/read out the information, wherein the data tracks are discrete tracks in which adjacent data tracks are separated by a groove located therebetween, a data signal is recorded on the data track of said recording medium, a servo signal is recorded on the servo tracks of grooves between said adjacent data tracks, and said magnetic head is positioned on the data track on the basis of said servo signal.

摘要翻译： 一种在信息记录/读取装置中头部定位的方法和装置，其中提供具有用于记录信息的数据轨道的磁记录介质，并且磁头位于数据轨道上以记录/读出信息，其中数据 信号被记录在所述记录介质的数据记录层中，伺服信号被记录在位于所述数据信号记录层下方的伺服信号记录层中，所述数据信号使用数据磁头读出，而所述伺服信号被读出 使用伺服磁头，并且所述伺服信号的频率在所述数据磁头的间隙零频率的范围内，而所述数据信号的频率在所述伺服磁头的间隙空位频率的范围内 并且所述磁头基于所述伺服信号位于数据轨道上。 一种在信息记录/读取装置中头部定位的方法和装置，其中提供具有用于记录信息的数据轨道的磁记录介质，并且磁头位于数据轨道上以记录/读出信息，其中数据 轨道是离散轨道，其中相邻数据轨道由位于其间的凹槽分开，数据信号被记录在所述记录介质的数据轨道上，伺服信号被记录在所述相邻数据轨道之间的凹槽的伺服轨道上，并且所述 磁头基于所述伺服信号位于数据轨道上。

公开(公告)号：US06590729B1

公开(公告)日：2003-07-08

申请号：US09680470

申请日：2000-10-06

申请人： Kyo Akagi ,  Yosuke Seo

发明人： Kyo Akagi ,  Yosuke Seo

IPC分类号： G11B509

CPC分类号： B82Y10/00 ,  G11B5/59633 ,  G11B5/743

摘要： Disclosed are a method and a device that exhibit better performance against factors inhibiting an increase in track density than the current system. A servo pattern is constituted of a plurality of patterns arranged on both sides of the center lines of tracks, the patterns on one side of the center line being shifted in the track direction from the patterns on the other side along the center line, and patterns A and B are each constituted of two types of phase patterns arranged in the track-width direction, which are patterns 11 and 12 and patterns 13 and 14, respectively. The positional signal of a magnetic head is decoded by determining a sinusoidal function, which roughly agrees with the waveform of the reproduced signal of the servo pattern, based on the information on the frequency of the reproduced signal which has been stored in advance.

摘要翻译： 公开了一种方法和装置，其对于阻止比当前系统增加的轨道密度的因素具有更好的性能。 伺服图案由布置在轨道的中心线的两侧的多个图案构成，中心线一侧的图案沿着轨迹方向沿着中心线从另一侧的图案移位，并且图案 A和B分别由排列在轨道宽度方向上的两种类型的图案构成，分别是图案11和12以及图案13和14。 基于关于预先存储的再现信号的频率的信息，通过确定与伺服模式的再现信号的波形大致一致的正弦函数来解码磁头的位置信号。

公开(公告)号：US5572699A

公开(公告)日：1996-11-05

申请号：US32191

申请日：1993-03-15

申请人： Yoshihisa Kamo ,  Hajime Aoi ,  Hitoshi Kakuta ,  Yoshito Tsunoda ,  Hiromichi Fujisawa ,  Yosuke Seo ,  Yasuhide Ouchi

发明人： Yoshihisa Kamo ,  Hajime Aoi ,  Hitoshi Kakuta ,  Yoshito Tsunoda ,  Hiromichi Fujisawa ,  Yosuke Seo ,  Yasuhide Ouchi

IPC分类号： G06F3/06 ,  G06F12/00 ,  G06F12/04 ,  G06F17/30

CPC分类号： G06F3/0601 ,  G11B5/3133 ,  G06F2003/0697

摘要： A file system including an input/output unit for inputting data from and outputting data to an external system; a controller connected to the input/output unit for dividing the data into an optional number of parallel data; a management table for storing the number of divisions of the data; a head group for writing the divided parallel data into a storage medium at the same time; and a unit for reading the data from the storage medium while referring to information stored in management device.

摘要翻译： 一种文件系统，包括用于从外部系统输入数据并将数据输出到外部系统的输入/输出单元; 连接到输入/输出单元的控制器，用于将数据分成可选数量的并行数据; 用于存储数据的分割数的管理表; 用于同时将分割的并行数据写入存储介质的头组; 以及用于在参考存储在管理装置中的信息的同时从存储介质读取数据的单元。

公开(公告)号：US5325364A

公开(公告)日：1994-06-28

申请号：US412514

申请日：1989-09-26

申请人： Yasuhide Ouchi ,  Hajime Aoi ,  Yoshihisa Kamo ,  Yosuke Seo ,  Hitoshi Kakuta

发明人： Yasuhide Ouchi ,  Hajime Aoi ,  Yoshihisa Kamo ,  Yosuke Seo ,  Hitoshi Kakuta

IPC分类号： G06F11/10 ,  G06F11/14 ,  H03M13/00 ,  G06F11/00

CPC分类号： G06F11/1076 ,  G06F11/1008 ,  G06F11/1443

摘要： An error correction circuit which includes a specification circuit for specifying erroneous portions in a first data set reproduced from a recording medium, a register for storing the reproduced first data set including the erroneous portions thus specified and a reproducing circuit responsive to the reproduced first data set for reproducing again the first data set from the recording medium to obtain retry data, when there exist erroneous portions in the reproduced first data set stored in the register. The correction circuit also includes a data replace circuit, connected to receive the retry data, for replacing information at the specified erroneous portions in the reproduced first data set stored in the register by information at corresponding portions in the retry data.

摘要翻译： 一种误差校正电路，包括用于指定从记录介质再现的第一数据组中的错误部分的指定电路，用于存储包括如此指定的错误部分的再现的第一数据组的寄存器和响应于再现的第一数据集的再现电路 当存储在寄存器中的再现的第一数据组中存在错误部分时，再次从记录介质再现第一数据组以获得重试数据。 校正电路还包括连接以接收重试数据的数据替换电路，用于通过重试数据中的相应部分处的信息替换存储在寄存器中的再现的第一数据集中的指定错误部分处的信息。

公开(公告)号：US5132854A

公开(公告)日：1992-07-21

申请号：US408197

申请日：1989-09-15

申请人： Toshiaki Tsuyoshi ,  Yosuke Seo ,  Hajime Aoi

发明人： Toshiaki Tsuyoshi ,  Yosuke Seo ,  Hajime Aoi

IPC分类号： G11B21/08 ,  G11B5/55

CPC分类号： G11B5/5547 ,  G11B5/5565

摘要： A disk drive unit is disclosed, which comprises a recording medium having more than two disk-shaped recording faces disposed on each other with an interval; information tracks disposed along the periphery on the more than two recording faces and servo signal fields on the recording faces, in the peripheral direction for different recording faces; more than two heads reading out servo information from the servo signal fields on the more than two recording faces; head moving means for moving the heads in the radial direction of the recording faces, linked with each other; means for obtaining position signals on the recording faces at different points of time for different heads on the basis of the servo signals; means for obtaining information on the relative velocity of the heads to the recording faces from the position signals at different points of time for different recording faces, and control means for effecting the velocity control by means of the head moving means on the basis of the information on the relative velocity.

摘要翻译： 公开了一种磁盘驱动单元，其包括具有多于两个盘形记录面的记录介质，所述记录介质以间隔彼此配置; 信息轨道沿着周边设置在记录面上的两个以上记录面和伺服信号场，沿着不同记录面的周边方向; 两个以上的磁头从两个以上的记录面的伺服信号场读出伺服信息; 头部移动装置，用于使记录面的径向移动头部; 用于根据所述伺服信号在不同的时刻针对记录面获取位置信号的装置; 用于从针对不同记录面的不同时间点的位置信号获得关于头到记录面的相对速度的信息的装置，以及用于通过头部移动装置基于信息进行速度控制的控制装置 相对速度。

公开(公告)号：US5193034A

公开(公告)日：1993-03-09

申请号：US551808

申请日：1990-07-12

申请人： Toshiaki Tsuyoshi ,  Yosuke Seo ,  Hajime Aoi ,  Makoto Saito

发明人： Toshiaki Tsuyoshi ,  Yosuke Seo ,  Hajime Aoi ,  Makoto Saito

IPC分类号： G11B5/596 ,  G11B20/12 ,  G11B27/30

CPC分类号： G11B5/59633 ,  G11B20/1217 ,  G11B20/1258 ,  G11B27/3027 ,  G11B2020/1282 ,  G11B2220/20 ,  G11B5/59655

摘要： A constant-density type of magnetic disk apparatus is made up of a plurality of magnetic disks, wherein at least one of the surfaces of the magnetic disks is a servo face divided into a plurality of zones in the radial direction of the disks. A magnetic disk used in this apparatus and a servo-writing device for making this magnetic disk are also disclosed. In the magnetic disk apparatus and the magnetic disk, servo information regions and clock information regions are alternately provided on the servo face in the circumferential direction of the disks. The servo information regions are arranged radially with respect to the rotation center of the disks and each of the clock information regions includes a plurality of magnetic transitions representative of clocks, the number of which is different for each of the divided zones. A servo PLL circuit is provided to generate a servo clock signal on the basis of the signal reproduced from each of the servo information regions, and a write PLL is also provided to generate a write clock signal on the basis of the signal reproduced from each of the clock information regions. Also disclosed is a disk for use in a constant density-recording type magnetic disk apparatus, wherein a dummy track is provided along a zone boundary on the data face embedded with servo patterns of the disk.

摘要翻译： 恒定密度型的磁盘装置由多个磁盘构成，其中磁盘的至少一个表面是在盘的径向方向上分成多个区域的伺服面。 本发明还公开了一种用于本装置的磁盘和用于制造该磁盘的伺服写入装置。 在磁盘装置和磁盘中，伺服信息区域和时钟信息区域在盘的圆周方向上的伺服面上交替地设置。 伺服信息区域相对于盘的旋转中心径向地布置，并且每个时钟信息区域包括表示每个分割区域的数量不同的多个时钟的磁跃迁。 提供伺服PLL电路以根据从每个伺服信息区再现的信号产生伺服时钟信号，并且还提供写入PLL以根据从每个伺服信息区再现的信号来产生写入时钟信号 时钟信息区。 还公开了一种在恒定密度记录型磁盘装置中使用的盘，其中沿着镶嵌有盘的伺服图案的数据面上的区域边界设置虚拟轨道。

公开(公告)号：US4851939A

公开(公告)日：1989-07-25

申请号：US048587

申请日：1987-05-11

申请人： Yosuke Seo ,  Yoshiyuki Hirano ,  Hajime Aoi ,  Takashi Tamura ,  Kazuyoshi Nakabayashi

发明人： Yosuke Seo ,  Yoshiyuki Hirano ,  Hajime Aoi ,  Takashi Tamura ,  Kazuyoshi Nakabayashi

IPC分类号： G11B21/08 ,  G11B5/012 ,  G11B5/55

CPC分类号： G11B5/5547 ,  G11B5/012

摘要： In a magnetic disk drive apparatus having a plurality of actuators, or a magnetic disk drive system constructed of a plurality of head disk assemblies (HDA's); a magnetic disk drive apparatus or system in which the actuators included in the above apparatus or system can be arbitrarily and selectively coupled with a plurality of access control circuits and high power amplifiers that are smaller in number than the actuators.

摘要翻译： 在具有多个致动器的磁盘驱动装置或由多个头盘组件（HDA）构成的磁盘驱动系统中; 包括在上述装置或系统中的致动器可以与数量小于致动器的多个访问控制电路和大功率放大器任意地和选择性地耦合的磁盘驱动装置或系统。

公开(公告)号：US6131142A

公开(公告)日：2000-10-10

申请号：US357372

申请日：1999-07-20

申请人： Yoshihisa Kamo ,  Hitoshi Kakuta ,  Atsushi Tanaka ,  Yosuke Seo

发明人： Yoshihisa Kamo ,  Hitoshi Kakuta ,  Atsushi Tanaka ,  Yosuke Seo

IPC分类号： G06F1/26 ,  G06F1/30 ,  G06F1/32 ,  G06F11/00 ,  G06F12/00

CPC分类号： G06F1/266 ,  G11B19/209

摘要： With respect to the disk drives provided power from a single power source in a disk drive system, start up power is first supplied to a first start-up group of the disks, preferably comprising all of the master disks, with the size of the group being selected so that the required current does not exceed the capacity of the power source. When the disk drives of the first group have substantially reached steady state, start-up is conducted with respect to a second start-up group of the disk drives so that the current required during start-up for the second group and the current required for steady state drive of the first start-up group does not exceed the capacity of the power source. With respect to each start-up group, the number of disk drives is the maximum integer value and decreases or remains the same with respect to subsequent start-up groups. When simultaneously transferring subdivided data in parallel to all of the disk drives of a parity group, respectively, seek operations in such a system are prevented from occurring simultaneously by offsetting the indices on the disks, by varying the seek operation start timing or by varying the head addresses for the start of reading and writing, all within one revolution, but the seek operations are ended at the same time, to reduce peak current requirements of the power source.

公开(公告)号：US5673412A

公开(公告)日：1997-09-30

申请号：US472460

申请日：1995-06-07

申请人： Yoshihisa Kamo ,  Hitoshi Kakuta ,  Atsushi Tanaka ,  Yosuke Seo

发明人： Yoshihisa Kamo ,  Hitoshi Kakuta ,  Atsushi Tanaka ,  Yosuke Seo

IPC分类号： G06F1/26 ,  G06F1/30 ,  G06F1/32 ,  G06F11/00 ,  G06F12/00

CPC分类号： G06F1/266 ,  G11B19/209

摘要： With respect to the disk drives provided power from a single power source in a disk drive system, start up power is first supplied to a first start-up group of the disks, preferably comprising all of the master disks, with the size of the group being selected so that the required current does not exceed the capacity of the power source. When the disk drives of the first group have substantially reached steady state, start-up is conducted with respect to a second start-up group of the disk drives so that the current required during start-up for the second group and the current required for steady state drive of the first start-up group does not exceed the capacity of the power source. With respect to each start-up group, the number of disk drives is the maximum integer value and decreases or remains the same with respect to subsequent start-up groups. When simultaneously transferring subdivided data in parallel to all of the disk drives of a parity group, respectively, seek operations in such a system are prevented from occurring simultaneously by offsetting the indices on the disks, by varying the seek operation start timing or by varying the head addresses for the start of reading and writing, all within one revolution, but the seek operations are ended at the same time, to reduce peak current requirements of the power source.

摘要翻译： 对于提供来自磁盘驱动器系统中的单个电源的电力的磁盘驱动器，首先将启动电力提供给具有组的大小的优选地包括所有主盘的磁盘的第一启动组 被选择使得所需电流不超过电源的容量。 当第一组的磁盘驱动器已经基本上达到稳定状态时，相对于磁盘驱动器的第二启动组进行启动，使得第二组启动期间所需的电流以及第二组所需的电流 第一启动组的稳态驱动不超过电源的容量。 对于每个启动组，磁盘驱动器的数量是最大整数值，并且相对于后续的启动组而言减少或保持不变。 当分别同时将分割的数据传输到奇偶校验组的所有磁盘驱动器时，通过改变寻道操作开始定时或通过改变寻道操作开始时间来防止这种系统中的寻找操作同时发生， 开始阅读和写入的头地址全部在一轮之内，但寻道操作同时结束，以减少电源的峰值电流要求。

公开(公告)号：US20050201003A1

公开(公告)日：2005-09-15

申请号：US11129283

申请日：2005-05-16

申请人： Kazuhisa Shishida ,  Yosuke Seo ,  Takahiro Inoue ,  Makoto Horisaki ,  Youichi Kusagaya

发明人： Kazuhisa Shishida ,  Yosuke Seo ,  Takahiro Inoue ,  Makoto Horisaki ,  Youichi Kusagaya

IPC分类号： G11B19/02 ,  G11B5/596 ,  G11B15/04 ,  G11B21/10 ,  G11B21/02

CPC分类号： G11B21/106 ,  G11B5/59627

摘要： In order to achieve narrow track pitch by measuring, storing and compensating common average values for repeatable runout components between adjacent tracks in a head positioning control system for a magnetic disk drive, there are provided: means for calculating a compensated signal for the average value of the repeatable runout of each servo sector of at least two tracks of servo information reproduced from a magnetic disk, on the basis of an inverse function of the sensitivity characteristics of the tracking control system; means for storing the calculated signal; and means for compensating the servo signal on the basis of this signal.

摘要翻译： 为了通过测量，存储和补偿用于磁盘驱动器的磁头定位控制系统中的相邻轨道之间的可重复跳动分量的共同平均值来实现窄轨道间距，提供：用于计算补偿信号的平均值的装置 基于跟踪控制系统的灵敏度特性的反函数，从磁盘再现的至少两个伺服信息轨迹的每个伺服扇区的可重复跳动; 用于存储所计算的信号的装置; 以及用于基于该信号来补偿伺服信号的装置。