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：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：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：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。