公开(公告)号：US5309296A

公开(公告)日：1994-05-03

申请号：US801755

申请日：1991-12-03

申请人： Fumio Nagase ,  Tohru Miura ,  Hiroshi Tsuyuguchi

发明人： Fumio Nagase ,  Tohru Miura ,  Hiroshi Tsuyuguchi

IPC分类号： G11B5/09 ,  G11B5/012 ,  G11B5/024 ,  G11B5/265 ,  G11B19/04 ,  G11B5/03 ,  G11B5/127 ,  G11B5/325

CPC分类号： G11B5/024 ,  G11B19/04 ,  G11B5/012

摘要： A magnetic disk drive is disclosed which has a tunnel erase head assembly comprising a read/write head for writing and reading data on a magnetic disk, and a pair of tunnel erase heads for trimming a pair of opposite marginal edges of the record track being formed by the read/write head, with the consequent formation of spaces intervening between the record tracks. The spaces created on the same disk by different disk drives may be of one polarity of magnetization or the other, with the possibility of noise production due to an abrupt change in the polarity of magnetization as the read/write head scans any of the spaces as a result of mistracking. For the reduction of such noise the coil of the tunnel erase heads is connected to an erase current source via a circuit whereby the erase current is made to have a staircase or ramp rise and fall.

摘要翻译： 公开了一种磁盘驱动器，其具有包括用于在磁盘上写入和读取数据的读/写头的隧道擦除头组件，以及用于修整正在形成的记录轨道的一对相对边缘的一对隧道擦除头 通过读/写头，随后在记录轨道之间形成空间。 由不同磁盘驱动器在同一个磁盘上创建的空间可能具有一个磁化极性或另一个极性，由于读/写头扫描任何空格，由于磁化极性的突然变化而产生噪声的可能性为 这是一个错误的结果。 为了减少这种噪声，隧道擦除头的线圈经由电路连接到擦除电流源，由此使擦除电流具有楼梯或斜坡上升和下降。

公开(公告)号：US5293601A

公开(公告)日：1994-03-08

申请号：US633665

申请日：1990-12-26

申请人： Hiroshi Tsuyuguchi ,  Shinichiro Tanaka ,  Fumio Nagase ,  Naoki Sugeta ,  Miya Enami ,  Tohru Miura ,  Katsuya Enami

发明人： Hiroshi Tsuyuguchi ,  Shinichiro Tanaka ,  Fumio Nagase ,  Naoki Sugeta ,  Miya Enami ,  Tohru Miura ,  Katsuya Enami

IPC分类号： G06F3/06 ,  G11B19/02 ,  G06F13/00

CPC分类号： G06F3/0601 ,  G11B19/02 ,  G06F2003/0692

摘要： A floppy disk drive controller has a control part which performs a plurality of kinds of controls by means of outputting control information appropriate to each kind of control, and a memory part in which information which selects a predetermined kind of control from among the plurality of kinds of controls is pre-stored, the control part outputting the control information corresponding to the predetermined kind of control which is selected based on the information from the memory part.

摘要翻译： 软盘驱动器控制器具有通过输出适合于各种控制的控制信息来执行多种控制的控制部分，以及从多种类型中选择预定种类的控制的信息的存储器部分 控制部分预先存储，控制部分输出与基于来自存储器部分的信息所选择的预定种类的控制相对应的控制信息。

公开(公告)号：US5303107A

公开(公告)日：1994-04-12

申请号：US869237

申请日：1992-04-15

申请人： Tohru Miura ,  Hiroshi Tsuyuguchi ,  Fumio Nagase ,  Miya Enami

发明人： Tohru Miura ,  Hiroshi Tsuyuguchi ,  Fumio Nagase ,  Miya Enami

IPC分类号： G11B5/09 ,  G11B19/00 ,  G11B19/02 ,  G11B19/04 ,  G11B19/14 ,  G11B20/10 ,  G11B20/00

CPC分类号： G11B19/14 ,  G11B19/00 ,  G11B19/02 ,  G11B19/04 ,  G11B20/10009

摘要： A floppy disk drive is disclosed which is for use with a host system capable of connecting its own power supply to the disk drive when its operation is needed, and disconnecting the power supply from the disk drive when its operation is not needed. The disk drive includes a stepper motor for moving a data transducer from track to track on a rotating magnetic disk, and a track counter for ascertaining the radial position of the transducer on the disk by counting the stepping pulses fed from the host system to a stepper motor control circuit. In order to maintain the count of the track counter despite power suspension, the track counter is connected to a supply terminal of the disk drive via a reverse blocking diode, and a capacitor is connected between the diode and ground. The track counter is therefore fed from the capacitor when the disk drive is disconnected from the power supply of the host system. Preferably, the count of the track counter when the disk drive is disconnected from the power supply may be temporarily stored on an electrically erasable, programmable read only memory, and the stored count may be returned to and preset on the track counter when the disk drive is subsequently powered on.

摘要翻译： 公开了一种软盘驱动器，其用于在需要其操作时能够将其自身的电源连接到磁盘驱动器的主机系统，以及当不需要其操作时将电源从磁盘驱动器断开。 磁盘驱动器包括用于将数据传感器从轨道到轨道上移动到旋转磁盘上的步进电机，以及用于通过将从主机系统馈送到步进电机的步进脉冲计数来确定换能器在盘上的径向位置的轨道计数器 电机控制电路。 为了保持轨道计数器的计数，尽管电源暂停，轨道计数器通过反向阻塞二极管连接到磁盘驱动器的电源端子，电容器连接在二极管和地之间。 因此，当磁盘驱动器与主机系统的电源断开连接时，轨道计数器从电容器馈送。 优选地，当磁盘驱动器与电源断开时，轨道计数器的计数可以临时存储在电可擦除的可编程只读存储器上，并且当盘驱动器可以将存储的计数返回到并预设在轨道计数器上 随后打开电源。

公开(公告)号：US5329510A

公开(公告)日：1994-07-12

申请号：US983116

申请日：1992-11-30

申请人： Hiroshi Tsuyuguchi ,  Shinichi Aikawa ,  Fumio Nagase

发明人： Hiroshi Tsuyuguchi ,  Shinichi Aikawa ,  Fumio Nagase

IPC分类号： G11B19/12 ,  G11B19/04 ,  G11B20/12 ,  G11B20/18 ,  G11B5/012

CPC分类号： G11B19/04 ,  G11B19/12 ,  G11B20/1252 ,  G11B20/1833

摘要： A data transfer system of the type including a disk drive for selective use with flexible magnetic disk cartridges of first and second storage capacities (e.g. 1 MB and 4 MB), the first storage capacity being less than the second storage capacity, a host computer, and a controller for controlling the operation of the disk drive under the direction of the host computer. The controller is factory preprogrammed to discriminate between unformatted disk cartridges of the two different storage capacities as either of the two types of disk cartridges is loaded in the disk drive. The program is such that, in response to the first of a series of formatting commands at the first storage capacity from the host computer, the controller causes the disk drive to write track format for the second storage capacity on a preassigned track (e.g. inmost track) on the disk and then immediately to read the track format. If the retrieved track format contains errors, it follows that the loaded disk cartridge is of the first storage capacity. Accordingly, the controller proceeds to format the disk cartridge at the first storage capacity. If the retrieved track format does not contain errors, on the other hand, then the loaded disk cartridge is of the second storage capacity. Thereupon the controller signals the host computer to that effect.

摘要翻译： 一种数据传输系统，包括用于选择性地使用第一和第二存储容量（例如1MB和4MB）的柔性磁盘盒的磁盘驱动器，第一存储容量小于第二存储容量，主计算机， 以及用于在主计算机的方向上控制磁盘驱动器的操作的控制器。 控制器出厂预编程，以区分两种不同存储容量的未格式化的磁盘盒，因为两种类型的磁盘盒都装载在磁盘驱动器中。 该程序使得响应于来自主计算机的第一存储容量的一系列格式化命令中的第一个，控制器使得磁盘驱动器在预分配的轨道（例如，最前面的轨迹）上写入用于第二存储容量的磁道格式 ）在磁盘上，然后立即读取轨道格式。 如果检索到的磁道格式包含错误，则装载的磁盘盒是第一个存储容量。 因此，控制器以第一存储容量进行格式化盘盒。 另一方面，如果检索到的磁道格式不包含错误，则装入的磁盘盒具有第二存储容量。 因此，控制器向主机发出信号。

公开(公告)号：US5309628A

公开(公告)日：1994-05-10

申请号：US992134

申请日：1992-12-17

申请人： Kiyoshi Fukuchi ,  Yoshiaki Sakai ,  Hiroshi Tsuyuguchi ,  Takashi Numata ,  Fumio Nagase

发明人： Kiyoshi Fukuchi ,  Yoshiaki Sakai ,  Hiroshi Tsuyuguchi ,  Takashi Numata ,  Fumio Nagase

IPC分类号： G11B25/04 ,  G11B5/55 ,  G11B33/12 ,  B23P19/04

CPC分类号： G11B5/5521 ,  Y10S29/028 ,  Y10T29/49025 ,  Y10T29/53165 ,  Y10T29/53261 ,  Y10T29/53265

摘要： An assembling position-adjusting mechanism of a magnetic disk apparatus able to adjust the azimuth, radial alignment, and index of a magnetic head by adjusting a position thereof during the assembling process of a spindle motor. A positioning head movable in a direction perpendicular to a top surface of a table is provided. A plurality of positioning pins are provided on the bottom of the positioning head. Moving mechanisms are provided in the positioning head so that the bottom surface of the positioning head is movable and rotatable parallel to the top surface of the table. Each positioning pin of the positioning head is inserted into a respective positioning hole of a motor assembly so as to move the motor assembly with a movement of the positioning head so that the spindle motor of the motor assembly is at an appropriate position relative to the magnetic head of the main body of the magnetic disk apparatus.

摘要翻译： 一种磁盘装置的组装位置调节机构，其能够通过在主轴电动机的组装过程中调节其位置来调节磁头的方位角，径向取向和折射率。 提供了可在与桌子的顶面垂直的方向上移动的定位头。 多个定位销设置在定位头的底部。 移动机构设置在定位头中，使得定位头的底面能够平行于工作台的顶面移动和旋转。 定位头的每个定位销插入到马达组件的相应定位孔中，以便随着定位头的运动而使马达组件移动，使得马达组件的主轴马达相对于磁铁位于适当的位置 磁盘装置的主体的头部。

公开(公告)号：US5032934A

公开(公告)日：1991-07-16

申请号：US395736

申请日：1989-08-18

申请人： Shinichi Aikawa ,  Yoshiaki Sakai ,  Hiroshi Tsuyuguchi ,  Fumio Nagase

发明人： Shinichi Aikawa ,  Yoshiaki Sakai ,  Hiroshi Tsuyuguchi ,  Fumio Nagase

IPC分类号： G11B5/012 ,  G11B5/09 ,  G11B20/10

CPC分类号： G11B20/10212 ,  G11B20/10009 ,  G11B5/012 ,  G11B5/09

摘要： A magnetic disc apparatus comprises a single write/read magnetic head for carrying out write/read with respect to either one of a low-density magnetic disc and a high-density magnetic disc, and a cosine equalizer supplied with a read signal from the write/read magnetic head. The write/read magnetic head has a core gap length which is between 0.60 and 1.20 times a minimum field conversion length for high-density write by a write/read signal.

摘要翻译： 磁盘装置包括用于执行相对于低密度磁盘和高密度磁盘中的任一个的写入/读取的单个写入/读取磁头和被提供有来自写入的读取信号的余弦均衡器 /读磁头。 写入/读取磁头具有通过写入/读取信号进行高密度写入的最小场转换长度的0.60到1.20倍的磁芯间隙长度。

公开(公告)号：US5434724A

公开(公告)日：1995-07-18

申请号：US201774

申请日：1994-02-25

申请人： Makoto Shoji ,  Tohru Miura ,  Hiroshi Tsuyuguchi

发明人： Makoto Shoji ,  Tohru Miura ,  Hiroshi Tsuyuguchi

IPC分类号： G11B21/08 ,  G11B19/00 ,  G11B19/02

CPC分类号： G11B19/00

摘要： A microcomputer system having a flexible magnetic disk drive and a controller therefor, with the disk drive including a stepper motor for incrementally moving a transducer from track to track on a rotating magnetic disk, and a clock which is inherently unstable in operation during a predefinable startup period thereof after being powered on. In order to enable the disk drive to internally generate stepping pulses for driving the stepper motor at twice as high a rate as by external stepping pulses from the controller without being affected by unstable clock pulses during the startup period of the clock, the controller supplies external stepping pulses to the disk drive after imparting a predetermined delay, longer than the startup period of the clock, to each series of external stepping pulses with respect to the moment a power save signal, also supplied from the controller to the disk drive, indicates that the clock and other power consuming parts of the disk drive be powered. Within the disk drive a counter counts the clock pulses for a length of time equal to half the period of each series of external stepping pulses in response to each incoming external stepping pulse, thereby providing output pulses that rise with the respective external stepping pulses. A pulse generator circuit generates internal stepping pulses in synchronism with both leading and trailing edges of the counter output pulses. Additional embodiments are disclosed.

摘要翻译： 一种具有柔性磁盘驱动器及其控制器的微计算机系统，其中磁盘驱动器包括步进马达，该步进马达用于在旋转磁盘上逐渐地将传感器从轨道移动到轨道，以及在预定义启动期间操作中固有地不稳定的时钟 上电后的周期。 为了使磁盘驱动器内部产生用于驱动步进电机的步进脉冲，其速度是来自控制器的外部步进脉冲的两倍，而不受时钟启动期间不稳定的时钟脉冲的影响，控制器提供外部 相对于从控制器向磁盘驱动器提供的功率保存信号的时刻，向每个系列的外部步进脉冲施加比时钟的启动时间长的预定延迟，向盘驱动器提供步进脉冲， 磁盘驱动器的时钟和其他耗电部分被供电。 在磁盘驱动器内，计数器响应于每个进入的外部步进脉冲，对时钟脉冲计数等于每一系列外部步进脉冲的周期的一半的时间长度，从而提供随着各个外部步进脉冲而上升的输出脉冲。 脉冲发生器电路与计数器输出脉冲的前沿和后沿同步产生内部步进脉冲。 公开了另外的实施例。

公开(公告)号：US5293625A

公开(公告)日：1994-03-08

申请号：US763182

申请日：1991-09-20

申请人： Tohru Miura ,  Hiroshi Tsuyuguchi ,  Shozo Touma

发明人： Tohru Miura ,  Hiroshi Tsuyuguchi ,  Shozo Touma

IPC分类号： G11B19/00 ,  G06F3/06 ,  G11B19/02 ,  G11B33/10

CPC分类号： G06F3/0607 ,  G06F3/0632 ,  G06F3/0661 ,  G06F3/0676 ,  G11B19/02

摘要： A disk drive connected to a host computer compatible with a plurality of computer hardware types can automatically transmit one desired control signal to the host computer, the desired control signal corresponding to a computer hardware type which is being used for the host computer. The disk drive may use a signal transmitted from the host computer which represents a storage capacity of a disk used for the disk drive.

摘要翻译： 连接到与多个计算机硬件类型兼容的主计算机的磁盘驱动器可以将一个期望的控制信号自动发送到主计算机，所述控制信号对应于正在用于主计算机的计算机硬件类型。 磁盘驱动器可以使用从主计算机发送的信号，其表示用于磁盘驱动器的磁盘的存储容量。

公开(公告)号：US5552945A

公开(公告)日：1996-09-03

申请号：US345008

申请日：1994-11-23

申请人： Tohru Miura ,  Hiroshi Tsuyuguchi

发明人： Tohru Miura ,  Hiroshi Tsuyuguchi

IPC分类号： G11B21/08 ,  G11B5/55 ,  G11B19/02 ,  G11B5/596

CPC分类号： G11B5/5534

摘要： A system for infallibly positioning a transducer on Track Zero on a flexible magnetic disk in the face of possible sensing errors by an optical Track Zero sensor customarily build into a disk drive. The transducer has not been correctly recalibrated if it has been positioned, when the disk drive is powered on, on an invalid track existing, either virtually or actually, immediately radially outwardly of Track Zero and if the disk drive is connected to a host that commands recalibration merely by causing transducer travel radially outwardly of the disk. A recalibration control circuit is therefore provided which cancels the host command and which, instead, causes the transducer to travel a predetermined distance radially inwardly of the disk and then to travel radially outwardly until the Track Zero sensor indicates again that the transducer is positioned on Track Zero.

摘要翻译： 通过光轨零传感器通常构建到磁盘驱动器中，可以将柔性磁盘上的传感器定位在轨迹零点上的系统，面对可能的感测误差。 如果在磁盘驱动器通电时，传感器未被正确地重新校准，则在现有的无效轨道上，虚拟地或实际上位于轨道零点的径向向外，并且如果磁盘驱动器连接到命令的主机 仅通过使换能器径向向外移动到盘上来进行重新校准。 因此，提供了重新校准控制电路，其消除主机命令，并且相反地使换能器沿盘的径向向内行进预定距离，然后径向向外行进，直到轨道零传感器再次指示换能器位于轨道 零。

公开(公告)号：US5357384A

公开(公告)日：1994-10-18

申请号：US179654

申请日：1994-01-10

申请人： Hiroshi Tsuyuguchi ,  Shinichiro Tanaka ,  Tohru Miura ,  Miya Enami ,  Hikaru Tamada ,  Yoshiaki Sakai

发明人： Hiroshi Tsuyuguchi ,  Shinichiro Tanaka ,  Tohru Miura ,  Miya Enami ,  Hikaru Tamada ,  Yoshiaki Sakai

IPC分类号： G11B21/08 ,  G11B5/55 ,  G11B19/00 ,  G11B19/10 ,  G11B21/12 ,  G11B21/02

CPC分类号： G11B5/5534 ,  G11B19/00 ,  G11B19/10 ,  G11B21/12

摘要： A flexible magnetic disk drive is disclosed which has a data transducer mounted to a pivotal support beam for movement into and out of data transfer contact with the disk. When the transducer is retracted away from the disk, the support beam butts on the top plate of the disk drive casing for the reduction of the thickness of the disk drive, that is, its dimension in a direction perpendicular to the plane of the disk. A stepper motor is provided for moving the transducer across data tracks on the disk in response to external stepping pulses from a host system and to internal stepping pulses for recalibration. The application of such stepping pulses to a stepper motor control circuit is prevented when the disk is not loaded in the disk drive, in order to avoid the movement of the support beam in sliding contact with the top plate.

摘要翻译： 公开了一种柔性磁盘驱动器，其具有安装到枢转支撑梁的数据换能器，用于移动进入和离开与盘的数据传送接触。 当传感器从盘离开时，支撑梁对接在盘驱动器壳体的顶板上，以减小盘驱动器的厚度，即其在垂直于盘平面的方向上的尺寸。 提供步进电机，用于响应于来自主机系统的外部步进脉冲和用于重新校准的内部步进脉冲，使换能器沿盘上的数据轨移动。 为了避免支撑梁与顶板滑动接触的移动，当盘没有装载在盘驱动器中时，可以防止这种步进脉冲施加到步进电机控制电路。