公开(公告)号：US5247410A

公开(公告)日：1993-09-21

申请号：US712540

申请日：1991-06-10

申请人： Susumu Ebihara ,  Masaaki Matsumoto ,  Kenji Mori ,  Jun Naruse ,  Tsuyoshi Takahashi ,  Yoshiyuki Hirano

发明人： Susumu Ebihara ,  Masaaki Matsumoto ,  Kenji Mori ,  Jun Naruse ,  Tsuyoshi Takahashi ,  Yoshiyuki Hirano

IPC分类号： G11B21/02 ,  G05D3/00 ,  G11B5/54 ,  H02K33/16

CPC分类号： G11B5/54

摘要： A magnetic disk apparatus includes a magnetic disk, a magnetic head which performs information recording and reproducing for the magnetic disk, a load spring for supporting the magnetic head, a head arm for fixing the load spring, a housing for housing these components, a shaft which fixes the head arm, bearings for supporting the shaft rotatably on the housing, and a motor which is coupled to the shaft. The motor comprises a motor cover, a permanent magnet which is divided into a plurality of segments and fixed on the shaft, and a coil which is fixed on the interior surface of the motor cover by being spaced with a certain gap from the permanent magnet. The shaft is included with a counter weight so as to complement the weight of the head arm, load spring and magnetic head. The coil has linear conductor sections parallel to the shaft, with the total number of linear sections being set equal to the total number of segments of permanent magnet.

摘要翻译： 一种磁盘装置，包括：磁盘，用于执行磁盘的信息记录和再现的磁头;用于支撑磁头的负载弹簧;用于固定负载弹簧的磁头臂;用于容纳这些部件的壳体;轴 其固定头臂，用于将轴支撑在壳体上的轴承以及联接到轴的马达。 电动机包括电动机盖，永久磁铁，其分成多个段并固定在轴上;线圈，其通过与永磁体间隔开一定间隙而固定在电机盖的内表面上。 轴配有平衡重，以补充头臂，负载弹簧和磁头的重量。 线圈具有与轴平行的线性导体部分，其中线性部分的总数被设置为等于永磁体的总段数。

公开(公告)号：US5666334A

公开(公告)日：1997-09-09

申请号：US549285

申请日：1995-10-27

申请人： Mikio Tokuyama ,  Yoshinori Takeuchi ,  Susumu Ebihara ,  Kenji Mori ,  Sadanori Nagaike ,  Hiromu Hirai ,  Teruyoshi Higashiya

发明人： Mikio Tokuyama ,  Yoshinori Takeuchi ,  Susumu Ebihara ,  Kenji Mori ,  Sadanori Nagaike ,  Hiromu Hirai ,  Teruyoshi Higashiya

IPC分类号： G11B5/09 ,  G11B5/48 ,  G11B13/04 ,  G11B19/02 ,  G11B19/04 ,  G11B19/28 ,  G11B13/00 ,  G11B17/22

CPC分类号： G11B13/04 ,  G11B19/02 ,  G11B19/04 ,  G11B5/4886

摘要： Magnetic disk unit 1 is connected to personal computer 400 through recording mode selecting means 2, and recording mode selecting means 2 can select one of 3 recording modes (high reliability, large capacity, and high speed) and magnetic disk unit 1 records information with the recording method selected by recording mode selecting means 2. The controllability of the magnetic disk unit 1 and personal computer 400 is improved significantly by selecting the most suitable recording method according to the characteristics of information to be recorded.

摘要翻译： 磁盘单元1通过记录模式选择装置2连接到个人计算机400，并且记录模式选择装置2可以选择3种记录模式（高可靠性，大容量和高速）中的一种，并且磁盘单元1记录信息 通过记录模式选择装置2选择的记录方法。通过根据要记录的信息的特性选择最合适的记录方法，显着提高磁盘装置1和个人计算机400的可控性。

公开(公告)号：US5825577A

公开(公告)日：1998-10-20

申请号：US778125

申请日：1997-01-02

申请人： Masami Miyatake ,  Nobuyuki Okamoto ,  Susumu Ebihara

发明人： Masami Miyatake ,  Nobuyuki Okamoto ,  Susumu Ebihara

IPC分类号： G11B21/21 ,  G11B5/60 ,  G11B19/04

CPC分类号： G11B5/60

摘要： Gain information in a read amplifier, which is recorded when data to be measured is reproduced, is stored in an AGC control memory circuit in advance. By reproducing the data using the gain information, reproduced data varied according to the amount of flotation of a magnetic head and the position of the magnetic head alone can be obtained. A variation in voltage amplitude of the reproduced data is detected by an envelope signal generating circuit and a variation in phase difference between a reading cycle in which the reproduced data is read and a reference cycle is detected by a phase difference signal generating circuit. A calculator calculates a float interval of the magnetic head and a variation in the position thereof based on these detected variations. As a result, a decision can be made as to whether the float interval of the magnetic head and the variation in the position thereof exceed an allowable range. When it is judged that they have exceeded the allowable range, a warning is issued to a user so that the magnetic head and a magnetic disk can be prevented from breakage in advance.

摘要翻译： 预先在AGC控制存储器电路中存储在被再现数据时记录的读取放大器中的增益信息。 通过使用增益信息再现数据，可以获得根据磁头的浮选量和单独的磁头的位置而变化的再现数据。 再现数据的电压幅度的变化由包络信号发生电路检测，读取周期中的读出周期与相位差信号发生电路检测到基准周期之间的相位差的变化。 计算器基于这些检测到的变化来计算磁头的浮动间隔和其位置的变化。 结果，可以做出关于磁头的浮动间隔和其位置的变化是否超出允许范围的决定。 当判断为超过允许范围时，向用户发出警告，从而能够预先防止磁头和磁盘的破损。

公开(公告)号：US4476411A

公开(公告)日：1984-10-09

申请号：US341245

申请日：1982-01-21

申请人： Masanobu Okazaki ,  Satoshi Akutsu ,  Susumu Ebihara

发明人： Masanobu Okazaki ,  Satoshi Akutsu ,  Susumu Ebihara

IPC分类号： H03H9/02 ,  H03H9/19 ,  H01L41/08

CPC分类号： H03H9/02023

摘要： A thickness shear quartz crystal oscillator has two major surfaces which extend in the direction the of X axis of the crystal and which are 5mm to 10mm long. X-Z plane defined by the X axis and Z axis of the crystal is rotated about the X axis by 35.degree.08' to 35.degree.16' so that the major surfaces are parallel to an X-Z' plane defined by the X axis and an imaginary Z' axis inclined to the Z axis at 35.degree.08' to 35.degree.16'. One of the major surfaces is displaced in the direction of the Z' axis to thereby cause the side faces of the oscillator to incline at an angle of 4.degree. to 6.degree..

摘要翻译： 厚度剪切石英晶体振荡器具有沿晶体X轴方向延伸的长度为5mm至10mm的两个主表面。 由X轴和Z轴定义的XZ平面围绕X轴旋转35°至'35°16'，使得主表面平行于由X轴定义的XZ'平面和虚拟Z '轴倾斜于Z轴在35°08'到35°16'。 其中一个主表面沿Z'轴方向移位，从而使振荡器的侧面以4°至6°的角度倾斜。