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。

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。

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。

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

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。

公开(公告)号：US4700249A

公开(公告)日：1987-10-13

申请号：US733145

申请日：1985-05-10

申请人： Shinichi Aikawa ,  Hiroshi Shibuya ,  Hideya Kato ,  Akira Nishimoto

发明人： Shinichi Aikawa ,  Hiroshi Shibuya ,  Hideya Kato ,  Akira Nishimoto

IPC分类号： G11B17/041 ,  G11B5/187 ,  G11B5/48 ,  G11B5/58 ,  G11B17/04 ,  G11B17/32 ,  G11B21/16 ,  G11B5/54

CPC分类号： G11B5/4886 ,  G11B17/32 ,  G11B5/58

摘要： A flexible magnetic disk drive is disclosed which has a transducer head requiring little or no positional or angular readjustment for proper data transfer contact with a flexible magnetic disk in the face of possible dimensional or mounting errors. The transducer head has a rounded contact surface for data transfer contact with the flexible magnetic disk, in which surface is defined a transducing gap, typically a read/write gap. The transducing gap is offset toward the axis of the magnetic disc from a notional line right angularly crossing, at the apex of the contact surface, another notional line connecting the apex of the contact surface and the center of the magnetic disk. So positioned on the contact surface, the transducing gap is practically free from the wobbling motion of that part of the rotating magnetic disk which is radially outward of its points of contact with the transducer head and with a pressure pad. The transducing gap can be arranged on the contact surface as above merely by mounting a transducer head of standard construction in a slanting attitude on a carriage which transports both the head and the pressure pad radially of the magnetic disk.

摘要翻译： 公开了一种灵活的磁盘驱动器，其具有换能器头，其需要很少或没有位置或角度重新调整，以在面对可能的尺寸或安装误差的情况下适当地与柔性磁盘的数据传输接触。 换能器头具有用于与柔性磁盘进行数据传输接触的圆形接触表面，其中表面定义为换能间隙，通常为读/写间隙。 换能间隙从接触表面的顶点处的直角成角度的理想线偏转到磁盘的轴线，另一个连接接触表面的顶点和磁盘中心的名义线。 因此，位于接触表面上的换能间隙实际上没有旋转磁盘的与转换器头部接触的径向外侧的一部分的摆动运动以及压力垫。 换能间隙可以如上所述地设置在接触表面上，只是通过将标准结构的换能器头部以倾斜的姿态安装在将磁头和压力垫两端的磁盘输送到磁盘的径向上的托架上。

公开(公告)号：US4903156A

公开(公告)日：1990-02-20

申请号：US193516

申请日：1988-05-12

申请人： Tohru Hayashi ,  Yoshiaki Sakai ,  Shinichi Aikawa ,  Hiroshi Matsunaga ,  Jun Makabe

发明人： Tohru Hayashi ,  Yoshiaki Sakai ,  Shinichi Aikawa ,  Hiroshi Matsunaga ,  Jun Makabe

IPC分类号： G11B17/32 ,  G11B5/58

CPC分类号： G11B5/58

摘要： A magnetic recording and/or reproducing apparatus comprises a first magnetic head mounted on a carriage and a second magnetic head mounted on an arm which swings to and from the carriage, for engagement with a first and second side respectively of a flexible magnetic disc. The first and second magnetic heads are mounted on the carriage and the arm respectively via first and second gimbal plates. The elastic modules of the first gimbal plate is chosen such that the resonance of the first and second magnetic heads due to external vibration is avoided.

摘要翻译： 磁记录和/或再现装置包括安装在滑架上的第一磁头和安装在臂上的第二磁头，该第二磁头摆动到滑架上并与滑架摆动，以分别与柔性磁盘的第一和第二侧接合。 第一和第二磁头分别通过第一和第二平衡板安装在托架和臂上。 选择第一万向板的弹性模块，使得避免由于外部振动引起的第一和第二磁头的共振。

公开(公告)号：US5155638A

公开(公告)日：1992-10-13

申请号：US549765

申请日：1990-07-09

申请人： Shinichi Aikawa ,  Yoshiaki Sakai

发明人： Shinichi Aikawa ,  Yoshiaki Sakai

IPC分类号： G11B19/10 ,  G11B19/12 ,  G11B23/30

CPC分类号： G11B19/12 ,  G11B19/10 ,  G11B23/30

摘要： A compatible disk drive is disclosed which is capable of writing and reading data on either of first, second and third interchangeable flexible magnetic disk cartridges of different storage capacities at first, second and third prescribed data transfer rates, respectively. The first and second disk cartridges have a first and a second capacity discriminate window, respectively, formed in different prescribed positions in their housings by way of contradistinction from each other and from the third disk cartridge which has no capacity discriminate window. The disk drive customarily employs two disk sensors for discriminating among the first, second and third disk cartridges. The invention ultilizes the binary outputs from the two disk sensors for the detection of the loading of any of the three types of disk cartridges, thereby dispensing with an additional sensor heretofore employed for that purpose.

摘要翻译： 公开了一种兼容的磁盘驱动器，其能够分别在第一，第二和第三规定数据传输速率下分别在不同存储容量的第一，第二和第三可互换的可变磁盘盒之一上写入和读取数据。 第一和第二盘盒分别具有第一和第二容量鉴别窗口，它们通过彼此相互矛盾并与不具有容量鉴别窗口的第三盘盒形成在其外壳中的不同规定位置。 磁盘驱动器通常使用两个磁盘传感器来区分第一，第二和第三磁盘盒。 本发明使来自两个盘传感器的二进制输出能够用于检测三种类型的盘盒中的任何一种的装载，从而分配迄今用于该目的的附加传感器。

公开(公告)号：US4853799A

公开(公告)日：1989-08-01

申请号：US061694

申请日：1987-06-12

申请人： Shinichi Aikawa

发明人： Shinichi Aikawa

IPC分类号： G11B5/09 ,  G11B5/012 ,  G11B5/55 ,  G11B19/04

CPC分类号： G11B5/012 ,  G11B19/04 ,  G11B5/5526

摘要： A disk drive capable of data transfer with a magnetic disk at, say, 192 tracks per inch (tpi) is made compatible with a 96 tpi disk drive. The 192 tpi disk drive comprises a magnetic head assembly having both a read/write head and a pair of tunnel erase heads. During writing at 192 tpi the tunnel erase heads are held out of operation, making it possible for the read/write head to form data tracks at the high density required. The tunnel erase heads are automatically switched on and held in operation during writing at 96 tpi, for erasing the edge portions of each data track being created by the read/write head. Thus, even if the disk on which data is to be written at 96 tpi bears old data tracks that have been prerecorded by a 96 tpi disk drive, such old data tracks will be completely erased by the pair of tunnel erase heads as the 192 tpi disk drive rewrites thereon at 96 tpi. So rewritten, the disk can be read by either the 192 or 96 pti disk drive.

摘要翻译： 能够以每英寸192个磁道（tpi）的磁盘进行数据传输的磁盘驱动器与96 tpi磁盘驱动器兼容。 192tpi盘驱动器包括具有读/写头和一对隧道擦除头的磁头组件。 在192tpi的写入期间，隧道擦除磁头不工作，使得读/写头可以以所需的高密度形成数据磁道。 隧道擦除头在96 tpi的写入期间自动接通并保持运行，以擦除由读/写头创建的每条数据轨道的边缘部分。 因此，即使要以96tpi写入数据的盘，也可以存储由96tpi盘驱动器预先记录的旧数据磁道，这样的旧数据磁道将被一对隧道擦除头完全擦除为192tpi 磁盘驱动器以96tpi在其上重写。 所以重写，磁盘可以由192或96 pti磁盘驱动器读取。