公开(公告)号：US20070146838A1

公开(公告)日：2007-06-28

申请号：US10593564

申请日：2005-03-25

申请人： Mitsuru Toishi ,  Hitoshi Okada ,  Tomiji Tanaka

发明人： Mitsuru Toishi ,  Hitoshi Okada ,  Tomiji Tanaka

IPC分类号： G03H1/12

CPC分类号： G11B7/0065 ,  G03H1/28 ,  G11B7/00772 ,  G11B7/128

摘要： A hologram recording device can easily perform multiplex recording/reproduction on a hologram recording medium. The hologram recording device includes an optical system and a distance controlling mechanism. The optical system focuses on a substantially same location of a hologram recording medium a signal light modulated at a light modulating element and a reference light whose phase has been modulated at a phase modulating element. The distance controlling mechanism controls a distance between the phase modulating element and the hologram recording medium. By controlling the distance between the phase modulating element and the hologram recording medium, multiplex recording can be performed on the hologram recording medium. In an ordinary phase-correlation multiplexing method, multiplex recording is performed as a result of shifting a light-focusing location in the direction of a surface of the hologram recording medium, whereas, in the present invention, it is possible to perform the multiplex recording without shifting the light-focusing location in the direction of the surface of the hologram recording medium. It is possible to further increase recording capacity as a result of shifting the light-focusing location in the direction of the surface of the hologram recording medium. Here, compared to the ordinary phase-correlation multiplexing method, it is possible to perform shifting by a sufficient amount.

摘要翻译： 全息记录装置可以容易地在全息图记录介质上执行多重记录/再现。 全息记录装置包括光学系统和距离控制机构。 光学系统集中在全息图记录介质的基本相同的位置处，在光调制元件处调制的信号光和其相位已经在相位调制元件被调制的参考光。 距离控制机构控制相位调制元件与全息图记录媒体之间的距离。 通过控制相位调制元件和全息图记录介质之间的距离，可以对全息图记录介质进行多重记录。 在通常的相位相关复用方法中，作为在全息图记录介质的表面方向移动聚光位置的结果进行复用记录，而在本发明中，可以执行多路记录 而不会在全息图记录介质的表面的方向上移动聚焦位置。 可以通过沿全息图记录介质的表面方向移动聚光位置来进一步提高记录容量。 这里，与普通相位相关复用方式相比，能够进行足够的移位。

公开(公告)号：US07283286B2

公开(公告)日：2007-10-16

申请号：US11314441

申请日：2005-12-21

申请人： Atsushi Fukumoto ,  Mikio Sugiki ,  Mitsuru Toishi ,  Naoto Kojima ,  Hitoshi Okada ,  Koji Takasaki

发明人： Atsushi Fukumoto ,  Mikio Sugiki ,  Mitsuru Toishi ,  Naoto Kojima ,  Hitoshi Okada ,  Koji Takasaki

IPC分类号： G03H1/10

CPC分类号： G11B7/1392 ,  G03H1/0404 ,  G03H1/12 ,  G03H1/26 ,  G03H2001/2675 ,  G11B7/0065

摘要： A hologram recording/reproducing device includes a laser light source emitting laser light; a spatial light modulator generating signal light and reference light from the laser light emitted from the laser light source, the signal light and the reference light traveling in a common light path; a first relay lens system including a first shielding plate at a focal position thereof and transmitting the signal light and the reference light generated by the spatial light modulator, the first shielding plate having a pinhole whose size is 1 to 2 times a Nyquist size; a phase modulating element disposed at a conjugate plane of the signal light and the reference light transmitted through the first relay lens system; an objective lens converging the signal light and the reference light transmitted through the phase modulating element on a hologram recording medium; and a light receiving system disposed between the phase modulating element and objective lens and receiving light returning from the hologram recording medium.

摘要翻译： 全息记录/再现装置包括发射激光的激光光源; 产生从激光光源发射的激光的信号光和参考光的空间光调制器，信号光和在公共光路中行进的参考光; 第一中继透镜系统，包括在其焦点位置处的第一屏蔽板，并且传输信号光和由空间光调制器产生的参考光，第一屏蔽板具有尺寸为奈奎斯特尺寸的1至2倍的针孔; 设置在所述信号光的共轭平面上的相位调制元件和透过所述第一中继透镜系统的基准光; 物镜将信号光和通过相位调制元件透射的参考光会聚在全息图记录介质上; 以及设置在相位调制元件和物镜之间并接收从全息图记录介质返回的光的光接收系统。

公开(公告)号：US20060171006A1

公开(公告)日：2006-08-03

申请号：US11314441

申请日：2005-12-21

申请人： Atsushi Fukumoto ,  Mikio Sugiki ,  Mitsuru Toishi ,  Naoto Kojima ,  Hitoshi Okada ,  Koji Takasaki

发明人： Atsushi Fukumoto ,  Mikio Sugiki ,  Mitsuru Toishi ,  Naoto Kojima ,  Hitoshi Okada ,  Koji Takasaki

IPC分类号： G03H1/10

CPC分类号： G11B7/1392 ,  G03H1/0404 ,  G03H1/12 ,  G03H1/26 ,  G03H2001/2675 ,  G11B7/0065

摘要： A hologram recording/reproducing device includes a laser light source emitting laser light; a spatial light modulator generating signal light and reference light from the laser light emitted from the laser light source, the signal light and the reference light traveling in a common light path; a first relay lens system including a first shielding plate at a focal position thereof and transmitting the signal light and the reference light generated by the spatial light modulator, the first shielding plate having a pinhole whose size is 1 to 2 times a Nyquist size; a phase modulating element disposed at a conjugate plane of the signal light and the reference light transmitted through the first relay lens system; an objective lens converging the signal light and the reference light transmitted through the phase modulating element on a hologram recording medium; and a light receiving system disposed between the phase modulating element and objective lens and receiving light returning from the hologram recording medium.

摘要翻译： 全息记录/再现装置包括发射激光的激光光源; 产生从激光光源发射的激光的信号光和参考光的空间光调制器，信号光和在公共光路中行进的参考光; 第一中继透镜系统，包括在其焦点位置处的第一屏蔽板，并且传输信号光和由空间光调制器产生的参考光，第一屏蔽板具有尺寸为奈奎斯特尺寸的1至2倍的针孔; 设置在所述信号光的共轭平面上的相位调制元件和透过所述第一中继透镜系统的基准光; 物镜将信号光和通过相位调制元件透射的参考光会聚在全息图记录介质上; 以及设置在相位调制元件和物镜之间并接收从全息图记录介质返回的光的光接收系统。

公开(公告)号：US08194517B2

公开(公告)日：2012-06-05

申请号：US13170623

申请日：2011-06-28

申请人： Hitoshi Okada ,  Tomiji Tanaka ,  Takahiro Takeda

发明人： Hitoshi Okada ,  Tomiji Tanaka ,  Takahiro Takeda

IPC分类号： G11B11/00

CPC分类号： G11B7/1275 ,  G03H1/2286 ,  G03H1/26 ,  G03H2001/0212 ,  G03H2240/51 ,  G03H2240/52 ,  G03H2240/53 ,  G11B7/083 ,  G11B7/08564 ,  G11B7/0938 ,  G11B7/1263 ,  G11B7/1267

摘要： A hologram recording and reproducing device controls an optical beam output from an external cavity semiconductor laser to improve a diffraction efficiency. The hologram recording and reproducing device includes an external cavity laser, a photodiode, a laser drive circuit and a laser diode controller. The external cavity laser has a laser diode adapted to emit an optical beam that is used to generate data light and reference light with which a hologram recording medium is irradiated. The photodiode detects the amount of the optical beam output from the external cavity laser. The laser drive circuit supplies a current to the external cavity laser. The laser diode controller controls the laser drive circuit to ensure that a value obtained by integrating the detected intensity of the optical beam with respect to time over a predetermined period is equal to predetermined recording energy.

摘要翻译： 全息记录和再现装置控制从外腔半导体激光器输出的光束以提高衍射效率。 全息记录和再现装置包括外腔激光器，光电二极管，激光驱动电路和激光二极管控制器。 外腔激光器具有适于发射光束的激光二极管，该光束用于产生照射全息图记录介质的数据光和参考光。 光电二极管检测从外腔激光器输出的光束的量。 激光驱动电路向外腔激光器提供电流。 激光二极管控制器控制激光驱动电路，以确保通过将检测到的光束的强度相对于预定时间段的时间积分获得的值等于预定的记录能量。

公开(公告)号：US07969846B2

公开(公告)日：2011-06-28

申请号：US12509674

申请日：2009-07-27

申请人： Hitoshi Okada ,  Tomiji Tanaka ,  Takahiro Takeda

发明人： Hitoshi Okada ,  Tomiji Tanaka ,  Takahiro Takeda

IPC分类号： G11B11/00

CPC分类号： G11B7/1275 ,  G03H1/2286 ,  G03H1/26 ,  G03H2001/0212 ,  G03H2240/51 ,  G03H2240/52 ,  G03H2240/53 ,  G11B7/083 ,  G11B7/08564 ,  G11B7/0938 ,  G11B7/1263 ,  G11B7/1267

摘要： A hologram recording and reproducing device controls an optical beam output from an external cavity semiconductor laser to improve a diffraction efficiency. The hologram recording and reproducing device includes an external cavity laser, a photodiode, a laser drive circuit and a laser diode controller. The external cavity laser has a laser diode adapted to emit an optical beam that is used to generate data light and reference light with which a hologram recording medium is irradiated. The photodiode detects the amount of the optical beam output from the external cavity laser. The laser drive circuit supplies a current to the external cavity laser. The laser diode controller controls the laser drive circuit to ensure that a value obtained by integrating the detected intensity of the optical beam with respect to time over a predetermined period is equal to predetermined recording energy.

摘要翻译： 全息记录和再现装置控制从外腔半导体激光器输出的光束以提高衍射效率。 全息记录和再现装置包括外腔激光器，光电二极管，激光驱动电路和激光二极管控制器。 外腔激光器具有适于发射光束的激光二极管，该光束用于产生照射全息图记录介质的数据光和参考光。 光电二极管检测从外腔激光器输出的光束的量。 激光驱动电路向外腔激光器提供电流。 激光二极管控制器控制激光驱动电路，以确保通过将检测到的光束的强度相对于预定时间段的时间积分获得的值等于预定的记录能量。

公开(公告)号：US20080198432A1

公开(公告)日：2008-08-21

申请号：US12032536

申请日：2008-02-15

申请人： Tomiji Tanaka ,  Masaaki Hara ,  Kazutatsu Tokuyama ,  Satoru Seko ,  Shinji Yamada ,  Hitoshi Okada

发明人： Tomiji Tanaka ,  Masaaki Hara ,  Kazutatsu Tokuyama ,  Satoru Seko ,  Shinji Yamada ,  Hitoshi Okada

IPC分类号： G03H1/22 ,  G02F1/137

CPC分类号： G11B7/1362 ,  G03H1/22 ,  G03H1/265 ,  G03H2001/0441 ,  G03H2210/562 ,  G11B7/0065 ,  G11B7/1369

摘要： A hologram reproducing apparatus includes a first reference light path leading laser light from a laser light source so that a hologram recording medium is irradiated with first reference light; a diffracted light path leading diffracted light, generated from the hologram recording medium by irradiation with the first reference light, to a light receiving element having a plurality of pixels; and a second reference light path leading second reference light, having the same polarization direction as that of the diffracted light, from the laser light source to the light receiving element. The second reference light path is provided with a phase modulating element so that the phase difference between the diffracted light and the second reference light in a light receiving surface of the light receiving element is adjusted within a predetermined range.

摘要翻译： 全息图再现装置包括：第一参考光路，其引导来自激光光源的激光，使得全息图记录介质用第一参考光照射; 通过照射第一参考光从全息图记录介质产生的衍射光的衍射光路到具有多个像素的光接收元件; 以及第二参考光路，其将具有与衍射光的偏振方向相同的偏振方向的第二参考光从激光光源引导到光接收元件。 第二参考光路设置有相位调制元件，使得光接收元件的光接收表面中的衍射光和第二参考光之间的相位差被调节在预定范围内。

公开(公告)号：US08416480B2

公开(公告)日：2013-04-09

申请号：US12032536

申请日：2008-02-15

申请人： Tomiji Tanaka ,  Masaaki Hara ,  Kazutatsu Tokuyama ,  Satoru Seko ,  Shinji Yamada ,  Hitoshi Okada

发明人： Tomiji Tanaka ,  Masaaki Hara ,  Kazutatsu Tokuyama ,  Satoru Seko ,  Shinji Yamada ,  Hitoshi Okada

IPC分类号： G03H1/26 ,  G03H1/10

CPC分类号： G11B7/1362 ,  G03H1/22 ,  G03H1/265 ,  G03H2001/0441 ,  G03H2210/562 ,  G11B7/0065 ,  G11B7/1369

摘要： A hologram reproducing apparatus includes a first reference light path leading laser light from a laser light source so that a hologram recording medium is irradiated with first reference light; a diffracted light path leading diffracted light, generated from the hologram recording medium by irradiation with the first reference light, to a light receiving element having a plurality of pixels; and a second reference light path leading second reference light, having the same polarization direction as that of the diffracted light, from the laser light source to the light receiving element. The second reference light path is provided with a phase modulating element so that the phase difference between the diffracted light and the second reference light in a light receiving surface of the light receiving element is adjusted within a predetermined range.

摘要翻译： 全息图再现装置包括：第一参考光路，其引导来自激光光源的激光，使得全息图记录介质用第一参考光照射; 通过照射第一参考光从全息图记录介质产生的衍射光的衍射光路到具有多个像素的光接收元件; 以及第二参考光路，其将具有与衍射光的偏振方向相同的偏振方向的第二参考光从激光光源引导到光接收元件。 第二参考光路设置有相位调制元件，使得光接收元件的光接收表面中的衍射光和第二参考光之间的相位差被调节在预定范围内。

公开(公告)号：US20090323481A1

公开(公告)日：2009-12-31

申请号：US12476397

申请日：2009-06-02

申请人： Masaaki HARA ,  Satoru SEKO ,  Hitoshi Okada ,  Tomiji TANAKA ,  Yoshiki OKAMOTO

发明人： Masaaki HARA ,  Satoru SEKO ,  Hitoshi Okada ,  Tomiji TANAKA ,  Yoshiki OKAMOTO

IPC分类号： G11B7/00

CPC分类号： G11B7/083 ,  G11B7/00781 ,  G11B7/08541 ,  G11B7/1275 ,  G11B7/24038 ,  G11B7/24044

摘要： A drive apparatus includes a light irradiation section for applying light from a light source via an object lens on a hologram recording medium having a recording layer on which a hologram is formed and a track formation layer on which an address recording track composed of a pit string recording address information representing the hologram recording position on the recording layer and an auxiliary track composed of a continuous groove formed side by side with the address recording track are formed, a light spot displacement section for displacing a light spot formed by the light irradiation section in a radius direction of the hologram recording medium, and a control section for controlling the light spot displacement section following a light information signal upon the auxiliary track traverse of the light spot obtained in accordance with the light spot displacement to execute a jump operation between the address recording tracks.

摘要翻译： 驱动装置包括光照射部分，用于经由物镜将光从光源施加到具有形成全息图的记录层的全息图记录介质上，以及轨道形成层，其上由凹坑串构成的地址记录轨道 形成表示记录层上的全息图记录位置的记录地址信息和由与地址记录轨道并排形成的连续槽组成的辅助轨道，用于将由光照射部分形成的光点移位的光点位移部分 全息图记录介质的半径方向，以及控制部分，用于控制根据光斑位移获得的光点的辅助轨道横越之后的光信息信号的光点位移部分，以执行地址 录制曲目。

公开(公告)号：US4458276A

公开(公告)日：1984-07-03

申请号：US315962

申请日：1981-10-28

申请人： Hitoshi Okada ,  Kazuki Takai ,  Katsumi Yamaguchi

发明人： Hitoshi Okada ,  Kazuki Takai ,  Katsumi Yamaguchi

IPC分类号： G11B15/675 ,  G11B15/66 ,  G11B23/06

CPC分类号： G11B15/67505

摘要： A magnetic tape recording/reproducing apparatus having a loading assembly which comprises a rotatable member driven by a motor mounted on the tape deck, a rack member interlocking with a tape pack inserted within said tape deck so as to be slidable with respect to said tape deck so that said rack member is allowed to slide due to rotational force of said rotatable member.

摘要翻译： 一种具有装载组件的磁带记录/再现装置，该装载组件包括由安装在磁带甲板上的电动机驱动的可旋转构件，与插入在所述磁带平台内的磁带组相互锁定的齿条构件，以相对于所述磁带座滑动 使得所述齿条构件由于所述可旋转构件的旋转力而被滑动。

公开(公告)号：US4423445A

公开(公告)日：1983-12-27

申请号：US259745

申请日：1981-05-01

申请人： Hitoshi Okada ,  Kazuki Takai ,  Katsumi Yamaguchi

发明人： Hitoshi Okada ,  Kazuki Takai ,  Katsumi Yamaguchi

IPC分类号： G11B15/18 ,  G11B15/675 ,  G11B5/008

CPC分类号： G11B15/1883 ,  G11B15/67505

摘要： A clutch system in a tape player comprises a first rotor rotated by a motor and a second rotor capable of engaging with and disengaging from said first rotor, both rotors being formed with engage portions at their end faces which are adjacent to each other. The clutch system is further provided with a switching means for carrying out engagement and disengagement of said rotors, and the switching means is operated by an operating means for making said motor carry out automatic loading operation.

摘要翻译： 带式播放器中的离合器系统包括由电动机旋转的第一转子和能够与所述第一转子接合和分离的第二转子，两个转子在它们的彼此相邻的端面处形成有接合部分。 离合器系统还设置有用于执行所述转子的接合和分离的切换装置，并且切换装置由用于使所述电动机执行自动加载操作的操作装置操作。