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1. 发明申请

US20090316239A1 RECORDING APPARATUS AND RECORDING METHOD 审中-公开
标题翻译：记录装置和记录方法
公开(公告)号：US20090316239A1
公开(公告)日：2009-12-24
申请号：US12475098
申请日：2009-05-29
申请人： Hitoshi OKADA , Masaaki Hara , Satoru Seko , Tomiji Tanaka , Yoshiki Okamoto
发明人： Hitoshi OKADA , Masaaki Hara , Satoru Seko , Tomiji Tanaka , Yoshiki Okamoto
IPC分类号： G03H1/08
CPC分类号： G11B7/00781 , G11B7/0065
摘要： A recording apparatus includes a drive unit that rotationally drives a holographic recording medium including a recording layer and a track forming layer that includes guide tracks formed at constant intervals in a radial direction, where a signal beam and a reference beam are emitted to the recording layer so that a hologram is recorded in accordance with the signal beam, a signal beam generating unit, a reference beam generating unit, a recording unit that emits the signal beam and reference beam into the medium and records the hologram, a rotation control unit that controls the drive unit so that the medium is rotationally driven at a constant rotation speed, and a recording control unit that selects some of the guide tracks so that radial-direction recording intervals of the holograms are statistically decreased towards the outer periphery and controls the recording unit to record the holograms along the selected tracks.
摘要翻译：记录装置包括：驱动单元，其旋转地驱动包括记录层的全息记录介质和轨道形成层，该轨道形成层包括沿径向恒定间隔形成的导轨，其中信号光束和参考光束被发射到记录层使得根据信号束记录全息图，信号光束产生单元，参考光束产生单元，将信号光束和参考光束发射到介质中并记录全息图的记录单元，控制旋转控制单元所述驱动单元使得所述介质以恒定的旋转速度被旋转地驱动;以及记录控制单元，其选择一些所述导轨，使得所述全息图的径向记录间隔向外周界统计地减小，并且控制所述记录单元沿所选轨道记录全息图。

2. 发明申请

US20100054104A1 HOLOGRAM RECORDING AND REPRODUCING DEVICE AND METHOD FOR RECORDING HOLOGRAM 失效
标题翻译： HOLOGRAM记录和再现装置以及记录HOLOGRAM的方法
公开(公告)号：US20100054104A1
公开(公告)日：2010-03-04
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： G11B7/00
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。

3. 发明申请

US20110255391A1 HOLOGRAM RECORDING AND REPRODUCING DEVICE AND METHOD FOR RECORDING HOLOGRAM 失效
标题翻译： HOLOGRAM记录和再现装置以及记录HOLOGRAM的方法
公开(公告)号：US20110255391A1
公开(公告)日：2011-10-20
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： G11B7/125
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。

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