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    Optical medium having a data pattern for detecting an upside-down insertion, and reproducing apparatus for use therewith
    23.
    发明授权
    Optical medium having a data pattern for detecting an upside-down insertion, and reproducing apparatus for use therewith 失效
    具有用于检测倒置插入的数据图案的光学介质，以及与其一起使用的再现装置

    公开(公告)号：US5694387A

    公开(公告)日：1997-12-02

    申请号：US672661

    申请日：1996-06-28

    申请人： Yasuhiro Gotoh ,  Yoshihisa Fukushima ,  Michiyoshi Nagashima

    发明人： Yasuhiro Gotoh ,  Yoshihisa Fukushima ,  Michiyoshi Nagashima

    IPC分类号： G11B7/0037 ,  G11B7/24 ,  G11B19/04 ,  G11B19/12

    CPC分类号： G11B19/12 ,  G11B19/04 ,  G11B7/0037 ,  G11B7/24

    摘要： An optical medium comprises an information layer interposed between first and second transparent plates having about the same thicknesses. A light beam illuminates the information layer from a front side, or from a back side of the medium when the medium is inserted erroneously. Information is reproduced or recorded when the light beam illuminates the front side thereof. The information layer comprises a second area for recording a data pattern on which a direction of data arrangement can be easily determined, and a first area for recording main information. In order to determine which side of the disk is facing an optical head, the data pattern in the second area is reproduced, and the side can be determined according to a difference in direction of data arrangement in reproduced signals.

    摘要翻译： 光学介质包括介于具有大致相同厚度的第一和第二透明板之间的信息层。 当介质被错误地插入时，光束从前侧或从介质的背面照亮信息层。 当光束照射其前侧时，再现或记录信息。 信息层包括用于记录其上可以容易地确定数据排列方向的数据模式的第二区域和用于记录主要信息的第一区域。 为了确定盘的哪一侧面对光头，再现第二区域中的数据模式，并且可以根据再现信号中的数据排列方向的差异来确定一侧。

    Tracking servo signal generating device for an optical disc
    27.
    发明授权
    Tracking servo signal generating device for an optical disc 失效
    跟踪用于光盘的伺服信号产生装置

    公开(公告)号：US4875203A

    公开(公告)日：1989-10-17

    申请号：US2952

    申请日：1987-01-13

    申请人： Yoshinari Takamura ,  Kazuaki Obara ,  Michiyoshi Nagashima

    发明人： Yoshinari Takamura ,  Kazuaki Obara ,  Michiyoshi Nagashima

    IPC分类号： G11B7/09 ,  G11B7/095

    CPC分类号： G11B7/0903

    摘要： An optical disk reproducing apparatus of the type in which a tracking control is performed by projecting a controlling laser beam to the center of each of a plurality of V grooves formed on an optical disk and using far-field images of light beams reflected from the optical disk and the signals recorded on the adjacent slopes of the V groove are read by respectively projecting two reproducing laser beams to the slopes. To remove the low-frequency components of the signals on the slopes entering a tracking error signal, the low-frequency components are extracted from the two reproduced signals by low-pass filters and the difference therebetween is generated as a correction signal which in turn is subtracted from the tracking error signal, thereby improving the accuracy of the tracking control.

    摘要翻译： 一种光盘再现装置，其中通过将控制激光束投影到形成在光盘上的多个V形槽中的每一个的中心并使用从光学反射的光束的远场图像进行跟踪控制 通过分别将两个再现激光束投影到斜面来读取记录在V槽的相邻斜面上的信号。 为了去除进入跟踪误差信号的斜坡上的信号的低频分量，通过低通滤波器从两个再现信号中提取低频分量，并且将它们之间的差产生为校正信号， 从跟踪误差信号中减去，从而提高跟踪控制的精度。

    Method for recording, reproducing and erasing optical information
    28.
    发明授权
    Method for recording, reproducing and erasing optical information 失效
    记录，再现和擦除光信息的方法

    公开(公告)号：US4710911A

    公开(公告)日：1987-12-01

    申请号：US724887

    申请日：1985-04-19

    申请人： Noboru Yamada ,  Michiyoshi Nagashima ,  Kenichi Nishiuchi

    发明人： Noboru Yamada ,  Michiyoshi Nagashima ,  Kenichi Nishiuchi

    IPC分类号： G11B7/00 ,  G11B7/0055 ,  G11B7/007 ,  G11B7/125 ,  G11B7/127 ,  G11B7/30

    CPC分类号： G11B7/127 ,  G11B7/0055 ,  G11B7/00557

    摘要： A read/write optical disk system for performing high-density recording, reproduction and erasing of information signals by utilizing reversible structural changes between the crystalline and amorphous states of a chalcogenide glass film or the like and a recording, reproducing and erasing method therefor. In the method of this invention, during the period of recording and erasing, respectively, an exposed film area is first heated beyond its melting point to obtain a random state of its atomic arrangement and the rate of cooling from this melted state is controlled so as to obtain a recorded state or an erased state. This method is realized in the system by arranging a plurality of laser spots of different intensities and lengths in proximity to each other on the same track thereby ensuring high-quality erasing involving no danger of any incomplete erasure.

    摘要翻译： 一种读/写光盘系统，用于通过利用硫族化物玻璃膜等的晶态和非晶状态之间的可逆结构变化及其记录，再现和擦除方法来执行信息信号的高密度记录，再现和擦除。 在本发明的方法中，在记录和擦除期间，首先将暴露的膜区域加热超过其熔点以获得其原子排列的随机状态，并且控制从该熔融状态的冷却速率，使得 以获得记录状态或擦除状态。 该方法通过在同一轨道上布置彼此不同的强度和长度的多个激光点，从而确保高质量的擦除而不会发生任何不完全擦除的危险，从而实现该方法。

    Servo control system for optical system which focuses a converging light beam on a recording disc
    29.
    发明授权
    Servo control system for optical system which focuses a converging light beam on a recording disc 失效
    用于将会聚光束聚焦在记录盘上的光学系统的伺服控制系统

    公开(公告)号：US4368526A

    公开(公告)日：1983-01-11

    申请号：US229313

    申请日：1980-12-23

    申请人： Shunji Harigae ,  Tomio Yoshida ,  Yoshinobu Nakata ,  Michiyoshi Nagashima ,  Toshio Sato

    发明人： Shunji Harigae ,  Tomio Yoshida ,  Yoshinobu Nakata ,  Michiyoshi Nagashima ,  Toshio Sato

    IPC分类号： G02B7/28 ,  G11B7/085 ,  G11B7/09 ,  G11B7/12

    CPC分类号： G11B7/085 ,  G11B7/0909

    摘要： A servo control system includes an error amplifier for deriving an error signal representing the displacement of a focus point of laser beam from different planes of an optical record disc, a differentiator for differentiating the error signal to detect its rate of variation, and a comparator for detecting the maximum peak of the differentiated signal which corresponds to reflections from the plane on which information is recorded. The focus point is moved in a direction toward the disc in an open loop mode until the maximum peak of the differentiated signal is detected, whereupon the focus point is controlled in response to the error signal in a closed loop mode to keep track of the recording plane.

    摘要翻译： 伺服控制系统包括误差放大器，用于导出表示来自光学记录盘的不同平面的激光束的聚焦点的位移的误差信号，用于区分误差信号以检测其变化率的微分器，以及用于 检测对应于记录有信息的平面的反射的微分信号的最大峰值。 焦点在开环模式中朝向盘的方向移动，直到检测到微分信号的最大峰值，于是响应于闭环模式中的误差信号来控制对焦点以跟踪记录 飞机

    IMAGING DEVICE
    30.
    发明申请
    IMAGING DEVICE 失效
    成像装置

    公开(公告)号：US20090160997A1

    公开(公告)日：2009-06-25

    申请号：US12094051

    申请日：2006-11-10

    申请人： Ichiro Oyama ,  Taku Hirasawa ,  Michiyoshi Nagashima ,  Tomokuni Iijima

    发明人： Ichiro Oyama ,  Taku Hirasawa ,  Michiyoshi Nagashima ,  Tomokuni Iijima

    IPC分类号： H04N5/225

    CPC分类号： H04N5/2254 ,  H04N5/23232 ,  H04N5/3415 ,  H04N5/349 ,  H04N9/045 ,  H04N9/07

    摘要： A plurality of lenses 102a to 102d arranged in the same plane form a plurality of subject images on a plurality of imaging regions 104a to 104d. Vertical line directions and horizontal line directions of the pixel arrangement in the respective plurality of imaging regions are equal to one another among the plurality of imaging regions. Further, at least one pair of subject images received by at least one pair of imaging regions having a parallax in the vertical line (or horizontal line) direction among the plurality of imaging regions are shifted from each other by a predetermined amount in the horizontal line (or vertical line) direction. By performing pixel shifting in a direction perpendicular to the direction in which a parallax is generated, it always is possible to obtain a high-resolution image even when the subject distance varies.

    摘要翻译： 布置在同一平面上的多个透镜102a至102d在多个成像区域104a至104d上形成多个被摄体图像。 多个成像区域中的像素排列的垂直线方向和水平方向在多个摄像区域中彼此相等。 此外，由多个成像区域中的垂直线（或水平线）方向的视差的至少一对成像区域接收的至少一对被摄体图像在水平线上彼此偏移预定量 （或垂直线）方向。 通过在与产生视差的方向垂直的方向上进行像素移位，即使当被摄体距离变化时，总是可以获得高分辨率图像。