公开(公告)号：US5283702A

公开(公告)日：1994-02-01

申请号：US746773

申请日：1991-08-16

申请人： Hiroshi Tsuyuguchi ,  Yoshio Hirose ,  Kazuhiko Inoue ,  Tohru Miura ,  Miya Enami

发明人： Hiroshi Tsuyuguchi ,  Yoshio Hirose ,  Kazuhiko Inoue ,  Tohru Miura ,  Miya Enami

IPC分类号： G11B5/55 ,  G11B19/00 ,  G11B19/20 ,  G11B21/08 ,  G11B5/596

CPC分类号： G11B19/20 ,  G11B19/00 ,  G11B5/5547

摘要： A flexible magnetic disk drive is disclosed which has a stepper motor coupled to a data transducer via a steel belt motion translating mechanism for moving the transducer from track to track on the rotating disk in response to stepping pulses and a stepping direction signal from an external host system. In order to save power, the stepper motor is held deenergized while the disk drive motor is out of rotation, with the consequent possibility that the transducer may be displaced from the required track position on the disk while the stepper motor is held deenergized. Therefore, in order to always memorize the latest of the successive destination tracks commanded by the host system, a forward/backward counter is provided which counts the external stepping pulses in either direction depending upon the binary state of the external stepping direction signal. After the disk drive motor is set into rotation, stepping pulses and an stepping direction signal are generated internally for causing the stepper motor to automatically reposition the transducer on the memorized latest destination track.

摘要翻译： 公开了一种柔性磁盘驱动器，其具有经由钢带运动转换机构耦合到数据传感器的步进电机，用于响应于步进脉冲和来自外部主机的步进方向信号将转换器从轨道移动到旋转盘上 系统。 为了节省电力，步进电动机在磁盘驱动电动机不能旋转的同时保持断电，从而随着步进电动机被断电而使换能器从盘上所需轨道位置移位的可能性。 因此，为了始终存储由主机系统指令的连续的目的地轨迹的最新，提供了前向/后向计数器，其根据外部步进方向信号的二进制状态对任一方向的外部步进脉冲进行计数。 在磁盘驱动电动机转动之后，内部产生步进脉冲和步进方向信号，使步进电动机自动地将换能器重新定位在存储的最新目的地轨道上。

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。

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：US5260634A

公开(公告)日：1993-11-09

申请号：US909617

申请日：1992-07-07

申请人： Hiroshi Tsuyuguchi ,  Tohro Miura ,  Naoki Sugeta ,  Tadashi Terada ,  Miya Enami

发明人： Hiroshi Tsuyuguchi ,  Tohro Miura ,  Naoki Sugeta ,  Tadashi Terada ,  Miya Enami

IPC分类号： G11B21/08 ,  H02P8/12 ,  H02P8/00

CPC分类号： H02P8/12 ,  Y10S388/915

摘要： In order to drive the stepper motor of a floppy disk drive with practically constant current in the face of fluctuations in supply voltage fed from a host system, a power control pulse generator circuit is provided which produces a series of power control pulses having a duty ratio dependent upon fluctuating supply voltage. The power control pulses are used for interrupting the excitation of the stepper motor windings during track seek operation. The power control pulses are generated by first repeatedly counting clock pulses from the host system to a predetermined number to provide periodically varying digital data, then translating the digital data into a triangular wave having an amplitude dependent upon the supply voltage, and then comparing the triangular wave with a reference voltage.

摘要翻译： 为了在面对从主机系统馈送的电源电压波动的情况下驱动具有几乎恒定电流的软盘驱动器的步进电机，提供了功率控制脉冲发生器电路，其产生一系列具有占空比的功率控制脉冲 取决于电源电压波动。 功率控制脉冲用于在跟踪寻道操作期间中断步进电机绕组的激励。 通过首先将从主机系统的时钟脉冲重复计数到预定数量来产生功率控制脉冲，以提供周期性变化的数字数据，然后将数字数据转换成具有取决于电源电压的幅度的三角波，然后比较三角形 波参考电压。

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：US5345343A

公开(公告)日：1994-09-06

申请号：US049562

申请日：1993-04-19

申请人： Tohru Miura ,  Hiroshi Tsuyuguchi

发明人： Tohru Miura ,  Hiroshi Tsuyuguchi

IPC分类号： G11B19/00 ,  G11B19/04 ,  G11B19/12 ,  G11B15/04 ,  G11B15/18

CPC分类号： G11B19/00 ,  G11B19/04

摘要： A flexible magnetic disk drive is disclosed which operates under the control of a host system. A CMOS inverter is employed as a power saving switch, holding a file protect sensor energized only when the standard "drive select" signal from the host commands operation of the disk drive. Another CMOS inverter is provided for two disk capacity a sensors which provide signals indicative of the data storage capacity of the loaded disk cartridge. The disk capacity sensors are energized only when the drive select signal commands operation of the disk drive and when the standard "motor on" signal dictates rotation of a disk drive motor.

摘要翻译： 公开了在主机系统的控制下操作的柔性磁盘驱动器。 CMOS逆变器被用作省电开关，只有当主机指定磁盘驱动器的操作的标准“驱动器选择”信号时，才保持文件保护传感器通电。 为两个磁盘容量提供另一个CMOS反相器，传感器提供指示所装载的磁盘盒的数据存储容量的信号。 磁盘容量传感器只有当驱动器选择信号指示磁盘驱动器的操作并且当标准的“电机接通”信号指示磁盘驱动电机的旋转时才被激励。

公开(公告)号：US5408369A

公开(公告)日：1995-04-18

申请号：US51045

申请日：1993-04-21

申请人： Tohru Miura ,  Hiroshi Tsuyuguchi

发明人： Tohru Miura ,  Hiroshi Tsuyuguchi

IPC分类号： G11B19/00 ,  G11B5/54

CPC分类号： G11B19/00

摘要： A power saving system for a flexible magnetic disk drive utilizes a power save signal supplied from a host system. When the power save signal indicates that the disk drive is standing by, a power saving circuit holds unpowered desired components of the disk drive such as a disk drive motor circuit, stepper motor circuit, read/write circuit and sensor circuits. The power saving circuit is constructed to permit the transducer to be recalibrated on a reference track on the disk only when the disk drive is turned on, but to inhibit such recalibration when the power save signal indicates the end of standby, thereby avoiding waste of power.

摘要翻译： 用于柔性磁盘驱动器的省电系统利用从主机系统提供的省电信号。 当省电信号指示磁盘驱动器正在等待时，节电电路保持诸如磁盘驱动电动机电路，步进电动机电路，读/写电路和传感器电路之类的磁盘驱动器的未动力所需的组件。 省电电路被构造成仅当磁盘驱动器被接通时允许传感器在盘上的参考轨道上被重新校准，但是当省电信号指示待机结束时禁止这种重新校准，从而避免浪费电力 。