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    Optical pickup device
    1.
    发明申请
    Optical pickup device 审中-公开
    光学拾取装置

    公开(公告)号：US20060262702A1

    公开(公告)日：2006-11-23

    申请号：US11329142

    申请日：2006-01-11

    申请人： Tatsuro Ide ,  Takeshi Shimano ,  Katsuhiko Kimura

    发明人： Tatsuro Ide ,  Takeshi Shimano ,  Katsuhiko Kimura

    IPC分类号： G11B7/135

    CPC分类号： G11B7/1378 ,  G11B7/1369 ,  G11B7/1374 ,  G11B7/13927 ,  G11B2007/0006

    摘要： The compatible type optical pickup device is capable of recording and reproducing optical disks in different disk substrate thickness such as BD and HD DVD or the like. In more detail, an optical pickup can record and reproduce the media of two or more kinds in different substrate thickness using almost identical wavelength or the identical laser source. One is provided as the infinite type optical system and the other is provided as the finite type optical system using an expander lens. Accordingly, the optical disks of different substrate thickness such as BD and HD DVD can be recorded and reproduced with compatibility using the identical wavelength of light.

    摘要翻译： 兼容型光学拾取装置能够记录和再现不同盘片厚度的光盘，例如BD和HD DVD等。 更详细地，光学拾取器可以使用几乎相同的波长或相同的激光源来记录和再现不同衬底厚度的两种或更多种介质。 提供一种作为无限型光学系统，另一种被提供为使用扩展器透镜的有限型光学系统。 因此，可以使用相同的光波长以兼容性来记录和再现BD和HD DVD等不同基板厚度的光盘。

    Optical information recording medium, optical information recording/reproducing device and optical information recording/reproducing method
    2.
    发明授权
    Optical information recording medium, optical information recording/reproducing device and optical information recording/reproducing method 有权
    光信息记录介质，光信息记录/再现装置和光信息记录/再现方法

    公开(公告)号：US08699310B2

    公开(公告)日：2014-04-15

    申请号：US12680612

    申请日：2008-08-06

    申请人： Kenichi Shimada ,  Tatsuro Ide ,  Takeshi Shimano ,  Harukazu Miyamoto

    发明人： Kenichi Shimada ,  Tatsuro Ide ,  Takeshi Shimano ,  Harukazu Miyamoto

    IPC分类号： G11B7/0065

    CPC分类号： G03H1/02 ,  G03H1/0256 ,  G03H1/22 ,  G03H2222/56 ,  G03H2223/19 ,  G03H2223/24 ,  G03H2250/33 ,  G03H2250/42 ,  G11B7/0065 ,  G11B7/24044

    摘要： A holographic recording medium in which information can be reproduced by phase conjugate beam without requiring a mirror for obtaining the phase conjugate beam and its driving part and recording density is not reduced. The recording medium includes a recording layer in which an interference pattern is recorded and a light absorption/transmission layer which can be reversibly changed to be in a first state where signal beam and reference beam passed through the recording layer are absorbed at the time of recording of information and a second state where the reference beam is transmitted at the time of reproduction of information, and the reference beam transmitted through the light absorption/transmission layer is reflected by a reflection layer to produce the phase conjugate beam.

    摘要翻译： 可以通过相位共轭光再现信息的全息记录介质，而不需要用于获得相位共轭光束的反射镜及其驱动部分和记录密度。 记录介质包括其中记录有干涉图案的记录层和可以可逆地改变为在记录时吸收信号束和参考光束通过记录层的第一状态的光吸收/透射层 的信息和在再现信息时发送参考光束的第二状态，并且通过光吸收/透射层透射的参考光束被反射层反射以产生相位共轭光束。

    Optical disc drive apparatus, information reproducing or recording method
    5.
    发明授权
    Optical disc drive apparatus, information reproducing or recording method 失效
    光盘驱动装置，信息再现或记录方法

    公开(公告)号：US07251203B2

    公开(公告)日：2007-07-31

    申请号：US10914194

    申请日：2004-08-10

    申请人： Takeshi Shimano ,  Tatsuro Ide

    发明人： Takeshi Shimano ,  Tatsuro Ide

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1353 ,  G11B7/13927

    摘要： Disclosed here is a method for solving a conventional problem that no spherical aberration signal can be detected from any push-pull signal that is easy to adjust an object photodetector when a differential push-pull signal is obtained. To achieve the above object, sub-beams used to detect a differential push-pull signal are defocused from the main beam and spherical aberration signals are detected and the compensation of the spherical aberration is started while tracking controlling is off and detection of spherical aberration signals is held while the tracking controlling is on. The present invention can thus obtain both of the spherical aberration signal and the differential push-pull signal at the same time with use of the conventional detection system.

    摘要翻译： 这里公开了一种解决传统问题的方法，即当获得差分推挽信号时，任何容易调整物体光电检测器的推挽信号都不能检测到球面像差信号。 为了实现上述目的，用于检测差分推挽信号的子光束与主光束散焦，并且检测球面像差信号，并且在跟踪控制关闭并且检测球面像差信号时开始球面像差的补偿 在跟踪控制开启时保持。 因此，本发明可以使用传统的检测系统同时获得球面像差信号和差分推挽信号两者。