公开(公告)号：US06469858B1

公开(公告)日：2002-10-22

申请号：US09557385

申请日：2000-04-25

申请人： Hiroshi Tsuyuguchi

发明人： Hiroshi Tsuyuguchi

IPC分类号： G11B1546

CPC分类号： G11B19/20 ,  G11B19/247 ,  G11B21/02

摘要： A disk drive for use with interchangeable flexible magnetic disks of potentially different weights, comprising a disk drive motor for imparting rotation to a disk loaded therein, and a stepper motor for moving a transducer across the track turns on the disk. Since the current consumption of the disk drive motor is subject to change according to the weight of each disk being driven, a current detector circuit is provided for detecting the magnitude of the current being consumed by the disk drive motor. A current control circuit controls the magnitude of the current supplied to the stepper motor in inverse proportion to the detected magnitude of the disk drive motor current. The stepping pulse rate is also varied for making the rotational speed of the stepper motor higher with a decrease in the magnitude of the disk drive motor current. Thus the seek speed is made progressively higher as the disk weight grows less, without increasing the total current requirement of the disk drive.

摘要翻译： 一种用于具有潜在不同重量的可互换柔性磁盘的磁盘驱动器，包括用于向装载在其中的盘进行旋转的盘驱动马达，以及用于使传感器跨过轨道移动的步进马达转动盘。 由于磁盘驱动电动机的电流消耗根据被驱动的每个磁盘的重量而改变，所以提供电流检测器电路，用于检测由磁盘驱动电动机消耗的电流的大小。 电流控制电路控制提供给步进电机的电流的大小与检测到的磁盘驱动电机电流的大小成反比。 随着磁盘驱动电机电流的大小的减小，步进脉冲率也随着步进电动机的转速变高而变化。 因此，随着磁盘重量的增加，搜索速度逐渐增加，而不增加磁盘驱动器的总电流需求。

公开(公告)号：US06289397B1

公开(公告)日：2001-09-11

申请号：US09326423

申请日：1999-06-04

申请人： Hiroshi Tsuyuguchi ,  Tsuyoshi Osawa ,  Satoshi Nakamura ,  Sadao Yabuki

发明人： Hiroshi Tsuyuguchi ,  Tsuyoshi Osawa ,  Satoshi Nakamura ,  Sadao Yabuki

IPC分类号： G06F906

CPC分类号： G06F3/0607 ,  G06F3/0632 ,  G06F3/0674 ,  G06F8/65 ,  G11B20/10

摘要： A flexible magnetic disk drive is disclosed which is linked to a computer via a universal serial bus interface having firmware held on a read-only memory. In order to facilitate the upgrading of the firmware, an electrically erasable, programmable ROM is employed for firmware storage. Each new firmware version is issued in the form of a flexible magnetic disk which may be loaded in the disk drive just like an ordinary data disk, only with the disk drive disconnected from the computer as far as data transmission is concerned. The EEPROM is preprogrammed to identify the loaded firmware disk, erase the old firmware version on the ROM, and write the new version thereon. In another embodiment a self-testing program disk is employed in place of the firmware disk, for performing a set of tests on the disk drive including the interface. The tests are conducted automatically as the self-testing program disk is loaded in the disk drive, again with the disk drive disconnected from the computer.

摘要翻译： 公开了一种灵活的磁盘驱动器，其通过具有固定在只读存储器上的固件的通用串行总线接口连接到计算机。 为了便于升级固件，采用电可擦除可编程ROM来进行固件存储。 每个新的固件版本都是以柔性磁盘的形式发行的，只要与数据传输相关的磁盘驱动器与计算机断开连接，磁盘驱动器就像普通的数据磁盘一样被加载到磁盘驱动器中。 EEPROM被预编程以识别加载的固件磁盘，擦除ROM上的旧固件版本，并在其上写入新版本。 在另一个实施例中，采用自检程序盘代替固件盘，用于在包括接口的磁盘驱动器上执行一组测试。 当自检程序磁盘加载到磁盘驱动器中时，测试将自动进行，磁盘驱动器与计算机断开连接。

公开(公告)号：US06173363B2

公开(公告)日：2001-01-09

申请号：US09152018

申请日：1998-09-11

申请人： Hiroshi Tsuyuguchi

发明人： Hiroshi Tsuyuguchi

IPC分类号： G06F1208

CPC分类号： G11B23/0327

摘要： A data transmission device which can read information on an IC card without changing a structure of a conventional floppy disc drive is provided. The IC card includes memory elements for storing information therein. The IC card is accommodated in the data transmission device and the data transmission device is attached to the floppy disc drive so that data stored in the IC card is read via the floppy disc drive. The IC card is electrically connected to the data transmission device. A magnetic head core unit of the data transmission device is magnetically connected to a magnetic head of the floppy disc drive so as to transmit data to the floppy disc drive via the magnetic head. A waveform of data read from the IC card is changed to a waveform which is conformable to a reproduction characteristic of the floppy disc drive.

摘要翻译： 提供一种可以在不改变常规软盘驱动器的结构的情况下读取IC卡上的信息的数据传输设备。 IC卡包括用于在其中存储信息的存储元件。 IC卡容纳在数据传输装置中，并且数据传输装置被附加到软盘驱动器，使得通过软盘驱动器读取存储在IC卡中的数据。 IC卡电连接到数据传输装置。 数据传输装置的磁头核心单元磁连接到软盘驱动器的磁头，以经由磁头将数据传送到软盘驱动器。 从IC卡读取的数据的波形被改变为符合软盘驱动器的再现特性的波形。

公开(公告)号：US5862113A

公开(公告)日：1999-01-19

申请号：US876561

申请日：1997-06-16

申请人： Hiroshi Tsuyuguchi ,  Mitsumasa Kubo

发明人： Hiroshi Tsuyuguchi ,  Mitsumasa Kubo

IPC分类号： G11B7/09 ,  G11B7/095 ,  G11B19/28 ,  G11B7/00

CPC分类号： G11B19/28 ,  G11B7/0956

摘要： A CD-ROM drive is disclosed which usually is put to use with CR-ROMs of varying qualities which may, or may not, wobble during rotation, possibly resulting in the vibration of the complete device. On being loaded into the device, therefore, each disk is rotated at increasing speed preparatory to reading. The speed of disk rotation at which vibration due to disk wobbling builds up to a prescribed limit is held as a maximum allowable speed until the disk is unloaded. The disk is subsequently read at no more than the maximum allowable speed.

摘要翻译： 公开了一种CD-ROM驱动器，其通常用于具有不同质量的CR-ROM，这些CR-ROM在旋转期间可以摆动或者不会摆动，可能导致整个装置的振动。 因此，在加载到设备中时，每个盘以准备读取的增加速度旋转。 由于盘摆动引起的振动达到规定极限的盘旋转速度被保持为直到盘卸载的最大容许速度。 随后在不超过最大允许速度的情况下读取磁盘。

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：US4783706A

公开(公告)日：1988-11-08

申请号：US32983

申请日：1987-03-27

申请人： Makoto Shoji ,  Hiroshi Tsuyuguchi ,  Shozo Toma ,  Kazuhiro Hiraki ,  Tsutomu Morita

发明人： Makoto Shoji ,  Hiroshi Tsuyuguchi ,  Shozo Toma ,  Kazuhiro Hiraki ,  Tsutomu Morita

IPC分类号： G11B21/02 ,  G11B5/54 ,  G11B19/00 ,  G11B19/10 ,  G11B19/20 ,  G11B21/08 ,  G11B21/10 ,  G11B5/55 ,  G11B19/02

CPC分类号： G11B19/20 ,  G11B19/00 ,  G11B19/10 ,  G11B21/106 ,  G11B5/54

摘要： A data transfer apparatus for use with a replaceable disklike record medium such as a flexible magnetic disk having data storage tracks thereon, comprising a disk drive motor for imparting rotation to the record medium, and a head transport motor for transporting a transducer head or heads radially of the record medium so as to enable the transducer head or heads to access the individual data storage tracks on the record medium for data transfer therewith. Also included is a control and drive circuit for controllably energizing the head transport motor. When the record medium is not loaded in the apparatus, the control and drive circuit holds the supply voltage of the head transport motor zero, or lwoer than its normal operating voltage for head transportation, for saving power. Then, as the record medium is loaded into the apparatus, the control and drive circuit applies the normal operating voltage to the head transport motor preparatory to the commencement of data transfer, thereby automatically recorrecting the head position on the record medium.

摘要翻译： 一种数据传送装置，用于与其上具有数据存储轨道的可替换的盘状记录介质一起使用，包括用于向记录介质传送旋转的盘驱动马达，以及用于传送换能器头部或头部的头部传送马达 以使得换能器头部或头部能够访问记录介质上的各个数据存储轨道，以便与其进行数据传输。 还包括用于可控地激励磁头传送电机的控制和驱动电路。 当记录介质没有装入设备时，控制和驱动电路将磁头传送电机的电源电压保持为零，或者比头部运输的正常工作电压低，以节省电力。 然后，由于记录介质被装载到装置中，所以控制和驱动电路将正常工作电压施加到磁头传送电机，以准备开始数据传送，从而自动重新校正记录介质上的磁头位置。

公开(公告)号：US4626942A

公开(公告)日：1986-12-02

申请号：US705674

申请日：1985-02-26

申请人： Makoto Shoji ,  Hiroshi Tsuyuguchi ,  Shozo Toma ,  Kazuhiro Hiraki ,  Tsutomu Morita

发明人： Makoto Shoji ,  Hiroshi Tsuyuguchi ,  Shozo Toma ,  Kazuhiro Hiraki ,  Tsutomu Morita

IPC分类号： G11B5/55 ,  G11B19/00 ,  G11B19/04 ,  G11B5/012 ,  G11B15/48 ,  G11B21/04

CPC分类号： G11B19/00 ,  G11B19/04 ,  G11B5/5526

摘要： A data transfer apparatus is disclosed as exemplified by a floppy disk drive which has photoelectric sensors such as a TRACK ZERO sensor for sensing whether a transducer head or heads are in the "track zero" position on the floppy disk, and a FILE PROTECT sensor for sensing whether the disk is protected against erasure of any prerecorded data. In order to avoid waste of power, at least the TRACK ZERO sensor, preferably the FILE PROTECT sensor as well, has its light source such as an LED connected to a power supply via a power saving switch herein shown as a switching transistor. Connected to the base of the power saving transistor is a switch control circuit which causes conduction through the transistor, and hence the energization of the sensor light source, only when the operation of the sensor is required, as for a preassigned length of time immediately after the apparatus is electrically turned on.

摘要翻译： 公开了一种数据传送装置，例如具有诸如TRACK ZERO传感器的光电传感器的软盘驱动器，用于检测传感器头部或头部是否处于软盘上的“轨迹零”位置，以及FILE PROTECT传感器， 检测磁盘是否被保护以防止任何预先记录的数据被擦除。 为了避免浪费电力，至少TRACK ZERO传感器（优选FILE PROTECT传感器）也具有其光源，例如通过本文所示为开关晶体管的省电开关连接到电源的LED。 连接到省电晶体管的基极是开关控制电路，其仅在需要传感器的操作时才导致通过晶体管的导通，并且因此传感器光源的通电，就像紧随其后的预先指定的时间长度 该装置电气接通。

公开(公告)号：US06801381B2

公开(公告)日：2004-10-05

申请号：US09817156

申请日：2001-03-27

申请人： Hiroshi Iwai ,  Takeshi Suzuki ,  Hiroshi Tsuyuguchi

发明人： Hiroshi Iwai ,  Takeshi Suzuki ,  Hiroshi Tsuyuguchi

IPC分类号： G11D5596

CPC分类号： G11B19/26 ,  G11B19/125

摘要： A magnetic disk apparatus includes a spindle motor for rotating a magnetic disk. Either a first pulse-train signal or a second pulse-train signal is selectively generated. The first and second pulse-train signals are different from each other in pulse frequency. When the first pulse-train signal is generated, the spindle motor is controlled to rotate at a first rotational speed in response to the first pulse-train signal. When the second pulse-train signal is generated, the spindle motor is controlled to rotate at a second rotational speed in response to the second pulse-train signal. The second rotational speed differs from the first rotational speed.

摘要翻译： 磁盘装置包括用于旋转磁盘的主轴电动机。 选择性地产生第一脉冲串信号或第二脉冲串信号。 第一和第二脉冲串信号在脉冲频率上彼此不同。 当产生第一脉冲串信号时，响应于第一脉冲串信号，主轴电机被控制为以第一转速旋转。 当产生第二脉冲串信号时，响应于第二脉冲串信号，主轴电机被控制为以第二转速旋转。 第二转速与第一转速不同。

公开(公告)号：US06483656B1

公开(公告)日：2002-11-19

申请号：US09549843

申请日：2000-04-14

申请人： Masakatsu Sakai ,  Takayuki Honda ,  Hiroshi Tsuyuguchi

发明人： Masakatsu Sakai ,  Takayuki Honda ,  Hiroshi Tsuyuguchi

IPC分类号： G11B1902

CPC分类号： G11B19/02

摘要： A flexible magnetic disk drive to be USB interfaced with a computer, there being a maximum current limitation of 500 milliamperes to be carried by USB cables. The current consumption of the disk drive maximizes when both disk drive motor and stepper motor are in rotation and when, additionally, a pilot lamp glows to warn that the disk is being accessed. The invention takes advantage of the fact that the stepper motor is driven with a motor current that varies periodically with the stepping pulses, each period of the motor current being notionally divisible into approximately two halves such that the motor current is less in magnitude in the first half than in the second. A pilot lamp control circuit causes the pilot lamp to be energized only during the first half of each motor current period, resulting in the blinking of the pilot lamp. Thus the peak of the sum of the motor current and the lamp current during the first half of the motor current period can be made no more than the peak of the motor current alone during the second half.

摘要翻译： 要与USB接口的软磁盘驱动器与计算机连接，USB电缆的最大电流限制为500毫安。 当磁盘驱动器电机和步进电机都旋转时，当驱动指示灯亮起以警告磁盘被访问时，磁盘驱动器的电流消耗最大化。 本发明利用以下事实：步进电动机是用电动机电流驱动的，该电动机电流随着步进脉冲周期性地变化，电动机电流的每个周期被概括地分成大约两半，使得电动机电流在第一 一半比第二。 指示灯控制电路使得指示灯仅在每个电动机当前周期的前半段期间被通电，导致指示灯的闪烁。 因此，在电动机电流周期的前一半期间，电动机电流和灯电流的总和的峰值可以不大于在下一半期间单独的电动机电流的峰值。

公开(公告)号：US4870514A

公开(公告)日：1989-09-26

申请号：US134219

申请日：1987-12-16

申请人： Katsuya Enami ,  Hiroshi Tsuyuguchi

发明人： Katsuya Enami ,  Hiroshi Tsuyuguchi

IPC分类号： G11B27/10 ,  G11B19/12

CPC分类号： G11B19/12

摘要： A flexible magnetic disk drive has an index sensor which, during the rotation of the magnetic disk, generates a series of index pulses representative of the angular position of the magnetic disk. The index pulses are delivered to a host system only when a drive select signal supplied therefrom to the disk drive is in a prescribed state dictating the execution of reading or writing by that disk drive. Since the host system responds to the leading edges of the incoming index pulses for formatting the magnetic disk, any index pulse should be suppressed if the drive select signal assumes the prescribed state during the duration of that index pulse; otherwise, the leading edge of the index pulse would erroneously represents the angular position of the magnetic disk. Thus the disk drive circuitry is improved, typically by incorporating a flip-flop circuit, for suppressing the undesired index pulse and for permitting the delivery of the subsequently generated index pulses as long as the drive select signal remains in the prescribed state.

摘要翻译： 柔性磁盘驱动器具有索引传感器，其在磁盘旋转期间产生代表磁盘的角位置的一系列索引脉冲。 只有当从其提供的驱动器选择信号到达磁盘驱动器时，索引脉冲被传送到主机系统，该规定状态指示该磁盘驱动器的读取或写入的执行。 由于主机系统响应输入索引脉冲的前沿以格式化磁盘，所以在该索引脉冲的持续时间内驱动选择信号采取规定状态时，应该抑制任何索引脉冲; 否则，索引脉冲的前沿将错误地表示磁盘的角位置。 因此，只要驱动选择信号保持在规定状态，磁盘驱动器电路通常通过并入用于抑制不希望的索引脉冲并允许传送后续产生的索引脉冲的触发器电路得到改进。