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261 条记录 (耗时 0.035 秒)

    Techniques for controlling beam position and focus in optical disk drives
    91.
    发明授权
    Techniques for controlling beam position and focus in optical disk drives 失效
    控制光盘位置和聚焦光盘驱动器的技术

    公开(公告)号：US5251194A

    公开(公告)日：1993-10-05

    申请号：US513079

    申请日：1990-04-12

    申请人： Kyosuke Yoshimoto ,  Osamu Ito ,  Kimiyuki Koyanagi ,  Yoshiki Nakajima ,  Shuitsu Takeda ,  Kyoji Shimoda

    发明人： Kyosuke Yoshimoto ,  Osamu Ito ,  Kimiyuki Koyanagi ,  Yoshiki Nakajima ,  Shuitsu Takeda ,  Kyoji Shimoda

    IPC分类号： G11B7/09 ,  G11B7/095

    CPC分类号： G11B7/0945 ,  G11B7/094 ,  G11B7/0941 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/0946

    摘要： An optical disk drive for recording and reproducing information on an optical disk medium includes a servo circuit for controlling tracking of a light beam on a predetermined track and a servo circuit for controlling focus of the light beam on the disk surface. The disk surface is divided into a plurality of regions, and calibration values for adjusting the servo circuits are determined in each region. The calibration values are stored in a memory and are used to adjust the servo circuits during tracking on a predetermined track. The calibration values include tracking offset values, focus offset values, servo deviation threshold values and sensor gain values. A number of techniques are disclosed for automatically determining the calibration values.

    摘要翻译： 用于在光盘介质上记录和再现信息的光盘驱动器包括用于控制预定轨道上的光束的跟踪的伺服电路和用于控制光盘在盘表面上的聚焦的伺服电路。 磁盘表面被分成多个区域，并且在每个区域中确定用于调整伺服电路的校准值。 校准值存储在存储器中，并且用于在预定轨道上的跟踪期间调整伺服电路。 校准值包括跟踪偏移值，对焦偏移值，伺服偏差阈值和传感器增益值。 公开了用于自动确定校准值的许多技术。

    Magneto-optic recording apparatus with controlled magnetic field generation
    93.
    发明授权
    Magneto-optic recording apparatus with controlled magnetic field generation 失效
    具有受控磁场产生的磁光记录装置

    公开(公告)号：US5172364A

    公开(公告)日：1992-12-15

    申请号：US558584

    申请日：1990-07-26

    申请人： Kyosuke Yoshimoto ,  Osamu Ito ,  Kunimaro Tanaka ,  Koichi Takeuchi ,  Isao Watanabe ,  Kazuhiko Tsutsumi

    发明人： Kyosuke Yoshimoto ,  Osamu Ito ,  Kunimaro Tanaka ,  Koichi Takeuchi ,  Isao Watanabe ,  Kazuhiko Tsutsumi

    IPC分类号： G11B11/105

    CPC分类号： G11B11/10521 ,  G11B11/10504 ,  G11B11/10515 ,  G11B11/10534 ,  G11B11/10536 ,  G11B11/10586 ,  G11B11/10595

    摘要： A magneto-optic recording apparatus which has a magnetic field generator that applies a magnetic field with a constant direction to a magneto-optic recording information medium for overwriting information to improve accuracy of recording and reproducing information onto and from magneto-optic recording information medium and further has an auxiliary magnetic field generator that compensates a variation of intensity of a magnetic field generated by the magnetic field generator and applied to the magneto-optic recording information medium is disclosed as the first invention. Also, a magneto-optic recording apparatus which performs synchronous wave detection of the reflected light signals from the magneto-optic recording information medium and controls A.C. voltages applied to an exciting coil of the magnetic field generator in response to the detected result of the synchronous wave detection, thus optimizing amplitudes of the reproducing signals from the magneto-optic recording information medium is disclosed as the second invention.

    摘要翻译： 一种磁光记录装置，具有磁场发生器，该磁场发生器将具有恒定方向的磁场施加到磁光记录信息介质，用于重写信息，以提高在磁光记录信息介质上记录和再现信息的准确度;以及 作为第一发明，还公开了补偿由磁场发生器产生的磁场的强度变化并应用于磁光记录信息介质的辅助磁场发生器。 另外，磁光记录装置，对来自磁光记录信息介质的反射光信号进行同步波检测，并响应于同步波的检测结果控制施加到磁场发生器的励磁线圈的AC电压 作为第二发明，公开了检测，从而优化来自磁光记录信息介质的再现信号的振幅。

    Optical memory disc driving apparatus
    96.
    发明授权
    Optical memory disc driving apparatus 失效
    光存储盘驱动装置

    公开(公告)号：US5073885A

    公开(公告)日：1991-12-17

    申请号：US237222

    申请日：1988-08-26

    申请人： Osamu Ito ,  Shigeo Hayashi

    发明人： Osamu Ito ,  Shigeo Hayashi

    IPC分类号： G11B21/08 ,  G11B7/085 ,  G11B7/09

    CPC分类号： G11B7/08505 ,  G11B7/0941

    摘要： An optical disc driving apparatus is provided for the access control system with respect to the optical disc, comprising emphasizing circuits which compensate for a decrease in the frequency response of a reproduced signal from an optical head and further comprising peak detection circuits for detecting envelopes of the output signals. The emphasizing circuits and peak detection circuits are not used for processing of the tracking servo sensor signal, therefore the compensation amount need not be accurately controlled. The characteristic of the reproduced signal of the optical disc is effectively utilized, thereby enabling the compensation amount to be used over a wider range from about a proper value to an excessive value. In addition, being able to use the compensation amount over a wider range results in a reduction in the number of separate stages of compensation.

    摘要翻译： 提供了一种光盘驱动装置，用于相对于光盘的访问控制系统，包括强调电路，其补偿来自光学头的再现信号的频率响应的降低，并且还包括峰值检测电路，用于检测 输出信号。 强调电路和峰值检测电路不用于跟踪伺服传感器信号的处理，因此不需要精确地控制补偿量。 有效地利用了光盘再现信号的特性，从而能够在从适当值到过大值的较宽范围内使用补偿量。 另外，能够在更宽的范围内使用补偿量导致单独的补偿阶段的数量的减少。

    Sanitary article
    97.
    发明授权
    Sanitary article 失效
    卫生用品

    公开(公告)号：US5069676A

    公开(公告)日：1991-12-03

    申请号：US83918

    申请日：1987-08-07

    申请人： Osamu Ito ,  Hiroshi Mizutani

    发明人： Osamu Ito ,  Hiroshi Mizutani

    IPC分类号： A61F13/53 ,  A61F13/15 ,  A61F13/472 ,  A61F13/49 ,  A61L15/16 ,  B01J20/26 ,  B01J20/28

    CPC分类号： A61F13/536 ,  A61F13/47 ,  A61F13/51121 ,  A61F13/534 ,  A61F13/537 ,  A61F2013/51078 ,  A61F2013/530481 ,  A61F2013/53445 ,  A61F2013/53721

    摘要： In a sanitary article having as a core material a super water absorbing polymer and two layers of fluff pulp to envelop the polymer, the improvement comprises that said layer of fluff pulp is composed of a compressed first site and a further compressed second site, the density of said first site ranging from 0.04 to 0.15 g/cm.sup.3, the density of said second site ranging from 0.06 to 0.4 g/cm.sup.3, and the area of said second site ranging from 10 to 50% of that of the entire article.

    摘要翻译： 在具有作为芯材料的超级吸水聚合物和两层绒毛浆以包封聚合物的卫生制品中，改进包括所述绒毛浆层由压缩的第一部位和进一步压缩的第二部位组成，密度 的所述第一部位的范围为0.04至0.15g / cm 3，所述第二部位的密度为0.06至0.4g / cm 3，所述第二部位的面积为整个制品的10至50％。

    Optical system for recording, reproducing, and/or erasing information
    100.
    发明授权
    Optical system for recording, reproducing, and/or erasing information 失效
    用于记录，再现和/或擦除信息的光学系统

    公开(公告)号：US4775965A

    公开(公告)日：1988-10-04

    申请号：US099488

    申请日：1987-09-22

    申请人： Kyosuke Yoshimoto ,  Osamu Ito

    发明人： Kyosuke Yoshimoto ,  Osamu Ito

    IPC分类号： G11B7/013 ,  G11B7/09 ,  G11B7/00

    CPC分类号： G11B7/24085 ,  G11B7/0938

    摘要： Disclosed in a system for recording, reproducing, and/or erasing information as recording pits on a recording medium. This medium has guide grooves for recording reproducing, and/or erasing the informatin signal. A condition whereby the value which is obtained by subtracting the groove width from the groove pitch is larger than a width of the recording pits is satisfied. A predetermined position for recording, reproducing, and/or erasing is set between the guide grooves. Alternatively, a condition whereby the width of a guide groove is larger than the width of a recording pit is satisfied. A predetermined position for recording, reproducing, and/or erasing is set on the guide groove.

    摘要翻译： 在用于记录，再现和/或擦除作为记录凹坑的记录介质上的信息的系统中公开。 该介质具有用于记录再现的导槽，和/或擦除信息信号。 满足通过从凹槽间距减去凹槽宽度而获得的值大于记录凹坑的宽度的条件。 在引导槽之间设置用于记录，再现和/或擦除的预定位置。 或者，满足引导槽的宽度大于记录凹坑的宽度的条件。 用于记录，再现和/或擦除的预定位置设置在引导槽上。