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1. 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。

2. 发明授权

US5473487A Magnetic head gimbal seat damped against unwanted oscillation and resonance 失效
标题翻译：磁头万向座座阻止不必要的振荡和共鸣
公开(公告)号：US5473487A
公开(公告)日：1995-12-05
申请号：US243298
申请日：1994-05-17
申请人： Fumio Nagase
发明人： Fumio Nagase
IPC分类号： G11B5/48 , G11B17/32 , G11B21/20
CPC分类号： G11B5/4826 , G11B17/32
摘要： A flexure seat for gimbaling a magnetic head is fabricated from sheet steel, comprising a central portion to which the head is to be mounted, an intermediate portion of annular shape around the central portion, and an outer portion of semiannular shape around the intermediate portion. The central portion is joined to the intermediate portion via a first pair of bridge portions in a first direction, and the intermediate portion to the outer portion via a second pair of bridge portions aligned in a second direction at right angles with the first direction. In order to suppress the unwanted oscillation, and prevent the resonance, of the central portion, a pair of dampers, as of silicone elastomer, are formed across the spacing between the central and intermediate portions, in positions on both sides of the central portion and in alignment with the second pair of bridge portions. The damper material is applied in fluid form and solidified by exposure to light. Any excessive spreading of the damper material before solidification is prevented by providing a pair of tapering tongues projecting from at least either of the central portion and the intermediate portion toward, and terminating short of, the other.
摘要翻译：一种用于使磁头伸展的弯曲座由钢板制成，包括一个中心部分，头部要安装在该中心部分上，围绕中心部分形成环形中间部分，以及围绕中间部分的半环形外部部分。中心部分经由第一对桥接部分沿第一方向连接到中间部分，并且经由第二对桥接部分将中间部分连接到与第一方向成直角的第二方向上的第二对桥接部分。为了抑制中心部分的不希望的振荡并防止共振，在中心部分和中间部分之间的间隔处，在中心部分的两侧的位置上形成一对阻挡件，如硅氧烷弹性体，并且与第二对桥接部分对准。阻尼材料以流体形式施加并通过曝光固化。通过设置从中心部分和中间部分中的至少一个突出的一对锥形舌片，并且终止于另一个，阻止了固化之前阻尼材料的任何过度扩散。

3. 外观设计

USD346160S Spring for magnetic head 失效
公开(公告)号：USD346160S
公开(公告)日：1994-04-19
申请号：US789157
申请日：1991-11-06
申请人： Fumio Nagase , Kazuhiko Inoue , Hidetoshi Kabasawa
设计人： Fumio Nagase , Kazuhiko Inoue , Hidetoshi Kabasawa

4. 发明授权

US5442504A Head supporting device of magnetic disk system 失效
标题翻译：磁盘系统头支撑装置
公开(公告)号：US5442504A
公开(公告)日：1995-08-15
申请号：US246576
申请日：1994-05-20
申请人： Fumio Nagase , Jiro Ueki
发明人： Fumio Nagase , Jiro Ueki
IPC分类号： G11B5/49 , G11B5/48 , G11B17/32 , G11B5/105
CPC分类号： G11B5/4826
摘要： A head supporting device includes an arm on which an upper magnetic head of a magnetic disk system is mounted, the arm having an adhesion surface to which a first adhesive agent and a second adhesive agent are applied, a carriage on which a lower magnetic head of the system is mounted, the carriage having an adhesion surface to which the first and second adhesive agents are applied, a first gimbal for connecting the upper magnetic head to an internal circuit of the system, the first gimbal having a first adhesion surface so that the first gimbal along with the upper magnetic head attached thereto is fixed to the arm by the first and second adhesive agents, and a second gimbal for connecting the lower magnetic head to the internal circuit, the second gimbal having a second adhesion surface so that the second gimbal along with the lower magnetic head attached thereto is fixed to the carriage by the first and second adhesive agents. In this head supporting device, the adhesion surface of the arm and the first adhesion surface include diagonally cut grooves so that the first adhesive agent flows in the grooves so as to evenly spread over the adhesion surface of the arm and the first adhesion surface, and the adhesion surface of the carriage and the second adhesion surface include diagonally cut grooves so that the first adhesive agent flows in the grooves so as to evenly spread over the adhesion surface of the carriage and the second adhesion surface.
摘要翻译：头支撑装置包括臂，其上安装有磁盘系统的上磁头，所述臂具有施加有第一粘合剂和第二粘合剂的粘合表面，托架上具有下磁头安装该系统，该滑架具有施加第一和第二粘合剂的粘合表面，用于将上磁头连接到该系统的内部电路的第一万向架，该第一万向架具有第一粘合表面，第一万向架及其附接的上磁头通过第一和第二粘合剂固定到臂上，第二万向架用于将下磁头连接到内部电路，第二万向架具有第二粘附表面，万向架与附着在其上的下磁头一起通过第一和第二粘合剂固定到滑架上。在该头支撑装置中，臂的粘合面和第一粘合面包括对角切割槽，使得第一粘合剂在槽中流动，以均匀地分布在臂和第一粘附表面的粘合表面上，以及滑架和第二粘合表面的粘合表面包括对角切割的凹槽，使得第一粘合剂在凹槽中流动以均匀地分布在滑架和第二粘合表面的粘合表面上。

5. 发明授权

US5396375A Dual head type magnetic disc recording/reproducing apparatus 失效
标题翻译：双头型磁盘记录/重放装置
公开(公告)号：US5396375A
公开(公告)日：1995-03-07
申请号：US191790
申请日：1994-02-03
申请人： Fumio Nagase , Toru Tanabe
发明人： Fumio Nagase , Toru Tanabe
IPC分类号： G11B5/012 , G11B5/035 , G11B19/02 , G11B5/09
CPC分类号： G11B19/02 , G11B5/012 , G11B5/035
摘要： A dual head type magnetic disk recording/reproducing apparatus, in which a magnetic disk is inserted and/or from which the magnetic disk is ejected, the magnetic disk having a first surface and a second surface each of which is segmented into a plurality of tracks, each track having a corresponding track number, the dual head type magnetic disk recording/reproducing apparatus includes a first magnetic head which reproduces an information signal from a first track on the first surface, a second magnetic head which reproduces an information signal from a second track on the second surface, a track number of the second track corresponding to that of the first track, and a predetermined number of tracks being between the first track and a radial location of the second track, a low pass filter, coupled to the first and second magnetic heads, to which the information signals reproduced by the first and second magnetic heads are supplied, and control means, coupled to the low pass filter, for adjusting a cut-off frequency of the low pass filter so that a resolution of the information signal reproduced at the first track and that of the information signal reproduced at the second track can be approximately equal to each other.
摘要翻译：一种双头型磁盘记录/再现装置，其中磁盘被插入和/或从中排出磁盘，磁盘具有第一表面和第二表面，每个磁盘被分割成多个轨道每个轨道具有对应的轨道号，双头型磁盘记录/再现装置包括从第一表面上的第一轨道再现信息信号的第一磁头，从第二磁道再现信息信号的第二磁头在第二表面上的轨道，与第一轨道的轨道号相对应的第二轨道的轨道号，以及在第二轨道的第一轨道和径向位置之间的预定数量的轨道，低通滤波器，耦合到第一轨道以及由第一和第二磁头再现的信息信号被提供到的第二磁头和耦合到低通滤波器的控制装置，用于调整低通滤波器的截止频率，使得在第一磁道再现的信息信号的分辨率和在第二磁道中再现的信息信号的分辨率可以彼此近似相等。

6. 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。

7. 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。

8. 发明授权

US5257152A Disk drive apparatus having a spindle permitting a thinner disk drive 失效
标题翻译：具有主轴的磁盘驱动装置允许更薄的磁盘驱动器
公开(公告)号：US5257152A
公开(公告)日：1993-10-26
申请号：US738454
申请日：1991-07-31
申请人： Fumio Nagase
发明人： Fumio Nagase
IPC分类号： G11B19/20 , G11B17/028 , G11B17/04 , G11B17/02
CPC分类号： G11B17/0282
摘要： The disk apparatus comprising a driving pin to be inserted in a driving hole provided on a hub of a disk, for rotating and driving the disk, a spindle to be inserted in a chucking hole provided at a center of said hub of said disk, and a drive source for rotating said driving pin and said spindle. The spindle has contact portions which contact at two positions an inner side of an inner wall of the chucking hole, the spindle being provided with the contact portion on an outer circumference of the spindle to position the disk, and a tip provided with an inclined surface from a height corresponding to a height of said chucking hole to a position having a height lower than the height of the chucking hole, the contact portions having a height substantially corresponding to the height of the inner wall of the chucking hole.
摘要翻译：该盘装置包括一个驱动销，该驱动销被插入设置在盘的轮毂上的用于旋转和驱动盘的驱动孔中，一个主轴被插入到设置在所述盘的所述轮毂的中心的夹紧孔中，以及用于旋转所述驱动销和所述主轴的驱动源。主轴具有接触部分，该接触部分在夹紧孔的内壁的内侧的两个位置处接触，主轴在主轴的外周上设置有接触部分以定位盘，并且具有倾斜表面从对应于所述夹紧孔的高度的高度到具有低于所述夹紧孔的高度的高度的位置，所述接触部的高度基本上对应于所述夹紧孔的内壁的高度。

9. 外观设计

USD346808S Magnetic head carriage 失效
公开(公告)号：USD346808S
公开(公告)日：1994-05-10
申请号：US789155
申请日：1991-11-06
申请人： Kazuhiko Inoue , Hidetoshi Kabasawa , Fumio Nagase
设计人： Kazuhiko Inoue , Hidetoshi Kabasawa , Fumio Nagase

10. 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。

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