公开(公告)号：US5590105A

公开(公告)日：1996-12-31

申请号：US404638

申请日：1995-03-15

申请人： Katsuya Enami ,  Tohru Miura

发明人： Katsuya Enami ,  Tohru Miura

IPC分类号： G11B19/00 ,  G11B7/0037 ,  G11B19/20 ,  G11B19/24 ,  G11B19/28 ,  G11B21/08 ,  G11B7/00

CPC分类号： G11B19/20 ,  G11B19/24 ,  G11B7/0037

摘要： A disk apparatus using a CLV method is provided in which disk apparatus a power consumption is reduced by providing a power save mode in which an operation of a head driving system is stopped during a standby state. The disk apparatus uses a constant linear velocity method by which method a recording/reproducing operation of information on a disk is performed while the disk is rotated at a variable speed so that the linear velocity of the head relative to the disk is maintained to be constant. A disk driving unit rotates the disk, and a head driving unit drives the head. A linear velocity controlling unit controls a rotational speed of the disk so that the linear velocity of the head relative to the disk is maintained to be constant. A constant rotational speed controlling unit rotates the disk at a constant rotational speed. A switching unit switches a control of the disk driving unit to be performed by either one of the linear velocity controlling unit and the constant rotational speed controlling unit. A stopping unit stops an operation of the head driving unit while the disk driving unit is controlled by the constant rotational speed controlling unit.

摘要翻译： 提供一种使用CLV方法的盘装置，其中通过提供在待机状态期间头驱动系统的操作停止的节电模式来减小功率消耗。 磁盘装置使用恒定的线速度方法，通过该方法在盘以可变速度旋转的同时执行盘上的信息的记录/再现操作，使得磁头相对于磁盘的线速度保持恒定 。 盘驱动单元旋转盘，并且头驱动单元驱动头。 线速度控制单元控制盘的旋转速度，使得头相对于盘的线速度保持恒定。 恒定的转速控制单元以恒定的转速旋转盘。 开关单元切换由线速度控制单元和恒定转速控制单元中的任一个执行的盘驱动单元的控制。 当通过恒定转速控制单元控制盘驱动单元时，停止单元停止头驱动单元的操作。

公开(公告)号：US5521895A

公开(公告)日：1996-05-28

申请号：US504933

申请日：1995-07-20

申请人： Tohru Miura ,  Mitsumasa Kubo ,  Akira Mashimo

发明人： Tohru Miura ,  Mitsumasa Kubo ,  Akira Mashimo

IPC分类号： G11B7/0037 ,  G11B19/24 ,  G11B19/28 ,  G11B20/10 ,  G11B20/12 ,  G11B20/14 ,  G11B7/00

CPC分类号： G11B20/1403 ,  G11B19/24 ,  G11B20/10009 ,  G11B20/1258 ,  G11B7/0037

摘要： An optical disk reproducing apparatus uses a spindle motor having a low torque to reduced power consumption and manufacturing cost while maintaining a low error rate for reproduced data. The spindle motor is rotated at a constant rotational speed under a CAV control when a pick-up is moved. The rotational speed of the spindle motor is switched to a reference linear speed under a CLV control when a reproducing operation is performed. The reference linear speed is established for each of the zones of a recording area of an optical disk. The reference linear speed is determined by generating a zone clock set for each of the zones. A frequency error signal is generated by comparing the zone clock with the reproduction data so as to maintain the spindle motor at the reference linear speed determined by the zone clock.

摘要翻译： 光盘再现装置使用具有低转矩的主轴电机来降低功耗和制造成本，同时保持低重现数据的错误率。 当移动拾取器时，主轴电机在CAV控制下以恒定的转速旋转。 当执行再现操作时，主轴电机的转速在CLV控制下切换到参考线速度。 为光盘的记录区域的每个区域建立参考线速度。 参考线速度通过为每个区域生成一个区时钟来确定。 通过将区域时钟与再现数据进行比较来产生频率误差信号，以将主轴电动机保持在由区域时钟确定的参考线速度。

公开(公告)号：US5400190A

公开(公告)日：1995-03-21

申请号：US71817

申请日：1993-06-04

申请人： Tohru Miura

发明人： Tohru Miura

IPC分类号： G11B19/00 ,  G11B19/10 ,  G11B15/18

CPC分类号： G11B19/00 ,  G11B19/10

摘要： A flexible magnetic disk drive incorporates a system for reducing the power consumption of a disk sensor according to a power save signal which is supplied from a host system and which indicates whether the disk drive is active or inactive. The disk sensor has a switch connected in series with a resistor, the sensor switch being opened or closed depending upon whether a flexible magnetic disk cartridge is loaded in or unloaded from the disk drive. For powering the disk sensor at least when the disk drive is active, and for unpowering the same when the disk cartridge is unloaded while the disk drive is inactive, an OR gate is provided which has its output grounded via the sensor switch and the resistor, one of its two inputs connected to the power save signal line, and the other input to a circuit point between sensor switch and resistor. Thus the OR gate goes low upon unloading of the disk cartridge while the disk drive is inactive, so that there is no current flow through the resistor even though the sensor switch is then closed. Additional embodiments are disclosed.

摘要翻译： 灵活的磁盘驱动器包括用于根据从主机系统提供并且指示磁盘驱动器是活动还是非活动的节电信号来降低磁盘传感器的功耗的系统。 磁盘传感器具有与电阻器串联的开关，传感器开关根据磁盘驱动器中装入或卸载软磁盘盒是否打开或关闭。 至少在磁盘驱动器处于活动状态时为磁盘传感器供电，并且当磁盘驱动器处于非活动状态时，当磁盘盒被卸载时，为了取消电源，则提供通过传感器开关和电阻将其输出接地的OR门， 其两个输入之一连接到省电信号线，另一个输入连接到传感器开关和电阻之间的电路点。 因此，当磁盘驱动器不活动时卸载磁盘盒时，OR门很低，因此即使传感器开关闭合，也不会有电流通过电阻。 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：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 。

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：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：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：US5535183A

公开(公告)日：1996-07-09

申请号：US346002

申请日：1994-11-29

申请人： Tohru Miura ,  Mitsumasa Kubo ,  Akira Mashimo

发明人： Tohru Miura ,  Mitsumasa Kubo ,  Akira Mashimo

IPC分类号： G11B7/085 ,  G11B19/20 ,  G11B19/24 ,  G11B19/28 ,  G11B20/14 ,  G11B21/08 ,  G11B27/10 ,  G11B7/00

CPC分类号： G11B19/20 ,  G11B19/24 ,  G11B20/1403 ,  G11B27/105 ,  G11B7/08529 ,  G11B2020/10916 ,  G11B2220/213 ,  G11B2220/2545

摘要： An optical disk device generating reproduced data based on a reproduced digital signal which is derived by tracking a track on an optical disk with an optical pickup is shown. A bit-frequency-information generation unit measures a bit frequency of the reproduced digital signal after transition of the optical pickup in a seek operation, and generates measured-bit-frequency information which indicates a measured bit frequency measured thereby. In a bit-frequency setting unit, if there is a difference between the measured bit frequency and a specified bit frequency, the measured-bit-frequency information is corrected so as to adjust the bit frequency of the reproduced digital signal to the specified bit frequency by a given amount of correction, and is produced as setting-bit-frequency information. And a PLL circuit generates a synchronization clock which is phase synchronized to the reproduced digital signal and is used for generation of the reproduced data by means of setting the bit frequency indicated by the setting-bit-frequency information to a free-run frequency of the PLL circuit.

摘要翻译： 示出了基于通过用光学拾取器跟踪光盘上的轨道导出的再现数字信号来生成再现数据的光盘装置。 比特频率信息生成单元在搜索操作中测量光学拾取器的转换之后的再现的数字信号的比特频率，并且生成指示由此测量的测量的比特频率的测量比特频率信息。 在位频设置单元中，如果测量的比特频率和指定比特频率之间存在差异，则校正测量比特频率信息，以便将再现的数字信号的比特频率调整到指定的比特频率 通过给定量的校正，并且被产生为设置位频率信息。 并且PLL电路产生与再现的数字信号相位同步的同步时钟，并且通过将由设置位频率信息指示的位频率设置为自由运行频率而用于生成再现数据 PLL电路。

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。