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75 条记录 (耗时 0.042 秒)

    Control apparatus for tracking a light beam on a track of an optical recording medium
    11.
    发明授权
    Control apparatus for tracking a light beam on a track of an optical recording medium 失效
    用于跟踪光记录介质的光道上的光束的控制装置

    公开(公告)号：US5253239A

    公开(公告)日：1993-10-12

    申请号：US614496

    申请日：1990-11-16

    申请人： Yasuaki Edahiro ,  Katsuya Watanabe ,  Mitsuro Moriya

    发明人： Yasuaki Edahiro ,  Katsuya Watanabe ,  Mitsuro Moriya

    IPC分类号： G11B7/09 ,  G11B7/095

    CPC分类号： G11B7/0956 ,  G11B7/094

    摘要： A tracking control apparatus is disclosed, in which a light beam is focused on an optical recording medium to form a light spot thereon, and a tracking error signal corresponding to a maximum or minimum point of total reflected light from a portion of the optical recording medium, which is irradiated by the light spot, is detected and used as a desired value for tracking servo control, whereby accurate tracking servo control can be made without producing any offset even when the surface of the optical recording medium is inclined or the optical axis of the light reflected from the optical recording medium deviates from a proper direction.

    Tracking control apparatus for an optical disk device
    19.
    发明授权
    Tracking control apparatus for an optical disk device 失效
    光盘装置追踪控制装置

    公开(公告)号：US5331615A

    公开(公告)日：1994-07-19

    申请号：US964784

    申请日：1992-10-22

    申请人： Shinichi Yamada ,  Mitsuro Moriya ,  Masayuki Shibano ,  Hiroyuki Yamaguchi

    发明人： Shinichi Yamada ,  Mitsuro Moriya ,  Masayuki Shibano ,  Hiroyuki Yamaguchi

    IPC分类号： G11B7/09 ,  G11B7/00

    CPC分类号： G11B7/0946

    摘要： The temperature around the tracking actuator is detected with a temperature sensor, and the characteristics of an equivalent digital filter are changed to match the characteristics of the tracking actuator at the detected temperature. When the temperature is low, a current is applied to the focus control coil to raise the temperature of the tracking actuator, thereby essentially matching the transfer functions of the tracking actuator and the equivalent filter.

    摘要翻译： 利用温度传感器检测跟踪致动器周围的温度，改变等效数字滤波器的特性，使其与检测温度下跟踪致动器的特性相匹配。 当温度低时，向聚焦控制线圈施加电流以升高跟踪致动器的温度，从而基本上匹配跟踪致动器和等效过滤器的传递函数。

    Tracking-control target-position adjustment method
    20.
    发明授权
    Tracking-control target-position adjustment method 失效
    跟踪控制目标位置调整方法

    公开(公告)号：US5257250A

    公开(公告)日：1993-10-26

    申请号：US450992

    申请日：1989-12-15

    申请人： Mitsuro Moriya ,  Masayuki Shibano ,  Hiroyuki Yamaguchi ,  Shinichi Yamada ,  Katsuya Watanabe

    发明人： Mitsuro Moriya ,  Masayuki Shibano ,  Hiroyuki Yamaguchi ,  Shinichi Yamada ,  Katsuya Watanabe

    IPC分类号： G11B7/09 ,  G11B11/105 ,  G11B21/08 ,  G11B7/007

    CPC分类号： G11B21/085 ,  G11B11/10565 ,  G11B11/10578 ,  G11B7/0938

    摘要： A tracking control target position adjusting track is provided on a recording carrier, where the track contains a preliminarily recorded first position-adjusting signal adjoining one side of track and a second position-adjusting signal adjoining the other side of track. While the reproduction position set on the target-position adjusting track, the tracking control apparatus adjusts the tracking-control target position based on reproduced first and second position-adjusting signals. As a result, the tracking control apparatus can precisely adjust the tracking control target position, thus providing quite satisfactory interchangeability with the corresponding apparatuses.

    摘要翻译： 跟踪控制目标位置调整轨迹设置在记录载体上，其中轨道包含预先记录的与轨道一侧相邻的第一位置调整信号和与轨道另一侧相邻的第二位置调节信号。 当在目标位置调整轨道上设置再现位置时，跟踪控制装置基于重放的第一和第二位置调整信号来调整跟踪控制目标位置。 结果，跟踪控制装置可以精确地调整跟踪控制目标位置，从而与相应的装置提供相当满意的可互换性。