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1. 发明授权

US5329510A Method and apparatus for discriminating between unformatted magnetic disk assemblies of two different storage capacities 失效
标题翻译：用于区分两个不同存储容量的未格式化磁盘组件的方法和装置
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。

2. 发明授权

US5032934A Magnetic disc apparatus with a cosine equalizer and specific gap length head 失效
标题翻译：具有余弦均衡器和特定间隙长度头的磁盘设备
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。

3. 发明授权

US5309628A Assembling position adjusting mechanism of a spindle motor for a magnetic disk apparatus 失效
标题翻译：用于磁盘装置的主轴电机的组装位置调整机构
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。

4. 发明授权

US5309296A System for eliminating noise arising from difference in polarity of magnetization by tunnel erase heads 失效
标题翻译：用于消除由隧道擦除头引起的磁化极性差异引起的噪声的系统
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。

5. 发明授权

US5303107A System for holding a track counter active despite power suspension in rotating disk data storage apparatus 失效
标题翻译：用于保持轨道计数器活动的系统，尽管在旋转盘数据存储装置中停电
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。

6. 发明授权

US5293601A Floppy disk control unit and apparatus having a floppy disk control unit 失效
标题翻译：软盘控制单元和具有软盘控制单元的设备
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。

7. 发明授权

US5043833A Magnetic head assembly 失效
标题翻译：磁头组件
公开(公告)号：US5043833A
公开(公告)日：1991-08-27
申请号：US535113
申请日：1990-06-08
申请人： Shinichi Aikawa , Fumio Nagase , Yoshiaki Sakai
发明人： Shinichi Aikawa , Fumio Nagase , Yoshiaki Sakai
IPC分类号： G11B5/265 , G11B5/10 , G11B5/60 , G11B17/32 , G11B21/21
CPC分类号： G11B17/32 , G11B5/10
摘要： A magnetic head assembly comprises a base defined with a flat slide surface on which a magnetic disk is contacted and a magnetic core embedded on the base surface so as to form a flush surface on the slide surface. The slide surface extends in a direction of rotation of the magnetic disk for a length B and has a width A in which the ration B/A is chosen equal to or larger than 4. The length B is set so as to satisfy a relation 0.35 m.ltoreq.B.ltoreq.0.55 m, where m is the length of an access opening in the housing for the disk in the rotational direction of the disk. At the same time, the slide surface is finished with such a precision that the slide surface shows a specular gloss. With such a magnetic head, the vibration of magnetic head assembly associated with rotation of the magnetic disk is successfully suppressed.
摘要翻译：磁头组件包括限定有平坦的滑动表面的基座，磁盘接触在其上，并且磁芯嵌入在基座表面上，以在滑动表面上形成平齐的表面。滑动表面沿磁盘的旋转方向延伸长度B，并且具有其中B / A选择为等于或大于4的宽度A.长度B设定为满足0.35的关系 m

8. 发明授权

US4811140A Magnetic data transfer apparatus having improved transducer coil arrangement 失效
标题翻译：具有改进的换能器线圈布置的磁数据传送装置
公开(公告)号：US4811140A
公开(公告)日：1989-03-07
申请号：US139066
申请日：1987-12-21
申请人： Katsuya Enami , Sinobu Kawamura , Fumio Nagase , Shinichi Aikawa
发明人： Katsuya Enami , Sinobu Kawamura , Fumio Nagase , Shinichi Aikawa
IPC分类号： G11B17/32 , G11B5/11 , G11B5/17 , G11B5/48 , G11B5/60 , G11B25/04 , G11B21/16
CPC分类号： G11B5/4826 , G11B5/11 , G11B5/17
摘要： An apparatus having a pair of magnetic transducer head assemblies for data transfer with both sides of a recording medium such as a flexible magnetic disk. One of the head assemblies is mounted via a planar flexure seat on a carriage movable radially of the medium, whereas the other head assembly is mounted via another planar flexure seat on a load arm which is hingedly mounted on the carriage for pivotal motion toward and away from the medium. At least one, preferably both, of the head assemblies has a data transfer coil such as a read/write coil at least partly, preferably wholly, disposed on that side of the flexure seat which is directed toward the recording medium. An erase coil, if any, of each head assembly may also be disposed on the same side of the flexure seat. This coil arrangement affords a significant reduction in the thickness of the apparatus.
摘要翻译：一种具有一对磁传感器头组件的装置，用于与诸如柔性磁盘的记录介质的两侧进行数据传送。其中一个头部组件通过平面弯曲座安装在可在介质上径向移动的滑架上，而另一个头部组件通过另一个平面弯曲座安装在负载臂上，负载臂铰接地安装在滑架上用于枢转运动朝向和远离从媒介。至少一个，优选两个头部组件具有数据传输线圈，例如读/写线圈，至少部分地，优选地完全地设置在柔性座的朝向记录介质的那一侧上。每个头部组件的擦除线圈（如果有的话）也可以设置在挠性座的同一侧上。该线圈装置显着降低了装置的厚度。

9. 发明授权

US4709285A Head assemblies mounted for optimum contact with a flexible magnetic disk 失效
标题翻译：头部组件安装成与柔性磁盘最佳接触
公开(公告)号：US4709285A
公开(公告)日：1987-11-24
申请号：US774337
申请日：1985-09-10
申请人： Katsuya Enami , Sinobu Kawamura , Fumio Nagase , Shinichi Aikawa
发明人： Katsuya Enami , Sinobu Kawamura , Fumio Nagase , Shinichi Aikawa
IPC分类号： G11B17/32 , G11B5/48 , G11B5/54 , G11B5/58 , G11B21/20 , G11B25/04 , G11B5/016 , G11B5/596
CPC分类号： G11B5/54 , G11B5/4826 , G11B5/58
摘要： An apparatus having a pair of magnetic transducer head assemblies for data transfer contact with the opposite faces of a flexible magnetic disk. One of the head assemblies has its disk engaging surface disposed at an angle to the normal plane of the magnetic disk in order to hold the disk engaging surfaces of both head assemblies in proper data transfer contact with the magnetic disk in spite of its wobbling movements during rotation. The disk engaging surface of that one head assembly slants away from the normal disk plane in a direction that can be anywhere between a radially inward direction of the magnetic disk and a tangential direction of a notional circle drawn concentrically on the magnetic disk, the tangential direction being upstream of the magnetic disk with respect to its predetermined direction of rotation. As the other head assembly is gimbaled and sprung against the slanting head assembly via the intervening magnetic disk, both head assemblies can be held in proper data transfer engagement with the disk despite its undulations in both radial and tangential directions.
摘要翻译：一种具有一对磁传感器头组件的装置，用于与柔性磁盘的相对面进行数据传送接触。头部组件中的一个具有与磁盘的法线平面成一定角度的盘啮合表面，以便将两个头部组件的盘接合表面保持在与磁盘适当的数据传送接触，尽管其摆动运动回转。该一个头部组件的盘接合表面沿着可以在磁盘的径向向内的方向和同心地在磁盘上卷取的概念圆的切线方向之间的任何方向从普通盘平面倾斜，切向方向相对于其预定的旋转方向在磁盘的上游。当另一个头部组件被平衡并通过中间磁盘弹簧抵靠倾斜头部组件时，两个头部组件可以保持与盘的适当数据传送接合，尽管其在径向和切向两个方向上都起伏。

10. 发明授权

US06859426B1 Optical disk drive unit 失效
标题翻译：光盘驱动单元
公开(公告)号：US06859426B1
公开(公告)日：2005-02-22
申请号：US09913302
申请日：2000-07-18
申请人： Toshihiro Ogawa , Fumio Nagase
发明人： Toshihiro Ogawa , Fumio Nagase
IPC分类号： G11B7/0045 , G11B7/007 , G11B7/00
CPC分类号： G11B7/1267 , G11B7/00736
摘要： An optical disk drive unit performing write power calibration which performs recording on a given test area of an optical disk by changing a write power and sets an optimum write power based on characteristic values obtained from reproduced signals from the given test area includes average calculation means for dividing the given test area into a plurality of areas, performing recording on the areas by changing the write power equally, and calculating averages of characteristic values obtained from reproduced signals from the areas, and optimum write power setting means for setting the optimum write power based on the averages of the characteristic values calculated by the average calculation means. Thereby, with the averages of the characteristic values obtained from the areas of the optical disk which areas are in angularly different positions, the effects of the periodic variation of the optical disk can be reduced and the optimum write power can be set with good accuracy.
摘要翻译：一种执行写入功率校准的光盘驱动单元，其通过改变写入功率在光盘的给定测试区域上进行记录，并且基于从给定测试区域的再现信号获得的特征值来设置最佳写入功率，包括平均计算装置将给定的测试区域划分成多个区域，通过等效地改变写入功率来对区域进行记录，以及计算从区域的再现信号获得的特征值的平均值，以及用于基于最佳写入功率设置最佳写入功率设置装置对由平均计算装置计算的特征值的平均值。因此，利用从光盘的各个区域的角度不同的位置获得的特征值的平均值，可以降低光盘的周期性变化的影响，并且可以以高精度设置最佳写入功率。

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