公开(公告)号：US06309590B1

公开(公告)日：2001-10-30

申请号：US09372124

申请日：1999-08-11

申请人： Takasi Obata ,  Yosiyasu Andou ,  Kazuhiko Yasuda

发明人： Takasi Obata ,  Yosiyasu Andou ,  Kazuhiko Yasuda

IPC分类号： B28B320

CPC分类号： B28B3/269 ,  B01J35/04 ,  F01N3/2828 ,  F01N2330/34

摘要： The present invention provides a production process of a hexagonal honeycomb structure having low deformation of hexagonal cells. This process comprises an extrusion step for obtaining moldings (7) in which partitions (71) are provided in the form of a hexagonal matrix by extrusion molding of a mixed raw material using a horizontal extruder having an extrusion die provided with slits in the form of a hexagonal matrix and in which the direction of extruding is substantially the horizontal direction, a drying step for drying moldings (7), and a baking step for baking moldings (7). The extrusion step is performed such that c axis (700) parallel to two parallel sides (702) and (705) of the six sides (701) through (706) of each hexagon formed by partitions (71) of extruded moldings (7) is substantially vertical relative to the horizontal plane.

摘要翻译： 本发明提供六方晶胞形变小的六边形蜂窝结构体的制造方法。 该方法包括用于获得模制品（7）的挤出步骤，其中通过使用具有挤出模头的卧式挤出机挤出成型六边形矩形形式的隔板（71），该挤出模具具有以下形式的狭缝： 六边形基体，其中挤出方向基本上是水平方向，干燥模制品（7）的干燥步骤和用于烘烤模制品（7）的烘烤步骤。 进行挤出步骤，使得平行于由挤压成形品（7）的间隔（71）形成的每个六边形的六个边（701）至（706）的两个平行边（702）和（705）的c轴（700） 相对于水平面基本垂直。

公开(公告)号：US5079654A

公开(公告)日：1992-01-07

申请号：US358670

申请日：1989-05-30

申请人： Hisatoshi Uno ,  Akira Takeda ,  Sumio Wada ,  Kazuhiko Yasuda

发明人： Hisatoshi Uno ,  Akira Takeda ,  Sumio Wada ,  Kazuhiko Yasuda

IPC分类号： G11B5/55

CPC分类号： G11B5/5547

摘要： A disklike record medium such as a magnetic data storage disk, and a closed-loop servo control system for positioning a transducer such as a magnetic read/write head on any of a multiplicity of concentric tracks on the record medium. The tracks on the record medium are divided into a plurality of groups, and each track of each group has a different code character prerecorded thereon as in the form of discretely magnetized regions. All the groups of tracks have the same set of code characters assigned thereto for the simplicity of the code characters. Read by the transducer, the code characters enable the control system to individually identify all the tracks of all the groups. In response to an externally supplied track command indicative of a destination track on which the transducer is to be positioned, and to internally supplied track code data, the control system causes translation of the transducer from a departure track to the destination track during track seek operations.

摘要翻译： 诸如磁数据存储盘的盘状记录介质和用于将诸如磁读/写头的换能器定位在记录介质上的多个同心轨道上的任何一个上的闭环伺服控制系统。 记录介质上的轨道被划分为多个组，并且每个组的每个轨道具有预先记录在其上的不同的代码字符，如离散磁化区域的形式。 为了简化代码字符，所有组的轨道具有分配给它们的相同的代码字符集。 由传感器读取，代码字符使控制系统能够单独识别所有组的所有轨道。 响应于表示其上要定位换能器的目的地轨道的外部提供的轨道命令和内部供应的轨道码数据，控制系统在轨道寻道操作期间使得换能器从出发轨道到目的地轨道的平移 。

公开(公告)号：US4875116A

公开(公告)日：1989-10-17

申请号：US153999

申请日：1988-02-09

申请人： Kazuhiko Yasuda ,  Sumio Wada

发明人： Kazuhiko Yasuda ,  Sumio Wada

IPC分类号： G01R31/00 ,  G11B5/55 ,  G11B21/08

CPC分类号： G11B5/5547 ,  G11B21/083

摘要： In a data storage and retrieval system employing a magnetic disk as the storage medium, a monophase encoder is coupled, typically, to an electric seek motor for optoelectronically producing an output representative of the position of a data transducer with respect to a multiplicity of concentric data tracks on the disk. Electrically connected to the monophase encoder is a triple detector circuit for deriving from the encoder output a transducer position signal representative of the transducer position on the disk, an actual transducer speed signal representative of the transducer speed relative to the disk, and a track boundary signal representative of boundaries between the data tracks on the disk. The transducer position signal and actual transducer speed signal are both fed to a seek motor control circuit, whereas the track boundary signal is fed to a controller microprocessor, which then delivers to the seek motor control circuit a requested transducer speed signal at which the transducer is to be moved across the data tracks during operation in a seek mode. In response to the incoming signals the control circuit controls the seek motor for transporting the transducer to a desired track at a desired speed and for positioning the transducer in centerline alignment with the track.

摘要翻译： 在采用磁盘作为存储介质的数据存储和检索系统中，单相编码器通常耦合到电动寻道电动机，用于光电产生表示数据换能器相对于多个同心数据的位置的输出 磁盘上的磁道。 电连接到单相编码器是三重检测器电路，用于从编码器输出代表盘上换能器位置的换能器位置信号，代表相对于盘的换能器速度的实际换能器速度信号，以及轨道边界信号 代表磁盘上的数据轨迹之间的边界。 换能器位置信号和实际的换能器速度信号均被馈送到寻道马达控制电路，而轨道边界信号被馈送到控制器微处理器，然后将控制器微处理器传送到寻道马达控制电路，请求换能器速度信号，换能器 在搜索模式下在操作期间被移动到数据轨道上。 响应于输入信号，控制电路控制寻道马达，以便以期望的速度将换能器传送到期望的轨道，并将换能器定位成与轨道的中心线对准。

公开(公告)号：US4696439A

公开(公告)日：1987-09-29

申请号：US850757

申请日：1986-04-11

申请人： Motoyuki Sukigara ,  Kazuhiko Yasuda

发明人： Motoyuki Sukigara ,  Kazuhiko Yasuda

IPC分类号： G11B15/43 ,  G11B15/46 ,  G11B15/54 ,  G11B15/32

CPC分类号： G11B15/54 ,  G11B15/43

摘要： A digital tape cassette apparatus having a speed sensing roller in frictional contact with the magnetic tape within a cassette housing at a point intermediate the magnetic head and that one of the cassette hubs operating as the takeup hub during forward tape transportation. Utilizing a tape speed signal generated by a speed sensor driven by the speed sensing roller, a closed loop servomechanism controls a pair of drive motors coupled directly to the respective cassette hubs to afford constant tape speed. The servomechanism is associated with a tape tension control circuit whereby a supply side one of the drive motors during tape travel in either direction is energized to an extent increasing with the increase in the diameter of the tape reel on the takeup side hub, thereby affording constant tape tension. A reverse tape tension drop circuit is connected to the tape tension control circuit for making the tape tension less during reverse tape travel than during forward tape travel under the condition of the same tape reel diameter on the takeup side cassette hub, so that the tape tension at the magnetic tape is rendered approximately the same during forward and reverse tape travels despite the dynamically asymmetrical tape path due to the speed sensing roller in frictional engagement with the tape.

摘要翻译： 一种数字带盒装置，其具有速度检测辊，该速度检测辊与位于磁头之间的一个点处的盒壳体内的磁带摩擦接触，以及在转发磁带传送期间作为卷绕轮毂操作的盒式磁带轮毂之一。 利用由速度感测辊驱动的速度传感器产生的磁带速度信号，闭环伺服机构控制一对直接耦合到各个磁带轮毂的驱动电机，以提供恒定的磁带速度。 伺服机构与带张力控制电路相关联，由此在磁带行进中的任一方向上的驱动电动机之一的供电侧被激励到随着卷绕侧轮毂上的磁带卷盘的直径的增加而增加的程度，从而提供恒定的 胶带张力。 带状张力控制回路连接到带张力控制电路，用于在卷带行驶期间使卷带张力小于在卷取侧盒式集线器上的相同卷盘直径的条件下的向前带行进期间的带张力，使得带张力 尽管由于速度感测辊与带摩擦接合而导致动态不对称的磁带路径，但是在磁带的正向和反向传送过程中，磁带的大致相同。

公开(公告)号：US5126895A

公开(公告)日：1992-06-30

申请号：US521670

申请日：1990-05-10

申请人： Kazuhiko Yasuda ,  Sumio Wada ,  Akira Shinohara

发明人： Kazuhiko Yasuda ,  Sumio Wada ,  Akira Shinohara

IPC分类号： G11B5/012 ,  G11B5/55 ,  G11B5/596 ,  G11B19/04 ,  G11B21/10

CPC分类号： G11B5/5582 ,  G11B19/04 ,  G11B5/596

摘要： A transducer position control system capable of shockproofing a hard disk data storage apparatus. Included is an off-track detector circuit relying on servo bursts prerecorded on the disk for detecting if the transducer is positioned within predetermined limits on any desired one of the concentric data tracks on the disk. If not, the off-track detector circuit signals a write circuit to inhibit writing. A programmed microcomputer may be employed to retry the writing of the same data on the disk sector where the transducer has gone off the track.

摘要翻译： 一种能够对硬盘数据存储装置进行防震的换能器位置控制系统。 包括依靠磁盘上预先记录的伺服脉冲串的偏离磁道检测器电路，用于检测传感器是否位于磁盘上任何所需的同心数据磁道上的预定限制内。 如果不是，则偏离轨迹检测器电路向写入电路发信号以阻止写入。 可以使用编程的微型计算机来重试在传感器已经离开轨道的磁盘扇区上的相同数据的写入。