公开(公告)号：US20100246367A1

公开(公告)日：2010-09-30

申请号：US12720151

申请日：2010-03-09

申请人： Hideaki OKANO ,  Takashi Usui

发明人： Hideaki OKANO ,  Takashi Usui

IPC分类号： G11B7/00

CPC分类号： G11B7/083 ,  G03H1/16 ,  G03H1/265 ,  G11B7/0065 ,  G11B7/00781

摘要： An optical information recording method includes the following steps. A converting step is converting a light beam into an information beam carrying information by using a spatial beam modulator. A focusing step is focusing the information beam on an optical information recording medium including an information recording layer. An irradiating step is irradiating the optical information recording medium with a reference beam and the information beam so that the reference beam and the information beam intersect with each other on the information recording layer by using an optical component. A rotating step is rotating the optical information recording medium or the optical component by using a drive unit for performing angle-multiplex recording. A management information recording step is recording management information at two or more relative angles having an angle interval smaller than twice at least a first null angle.

摘要翻译： 光信息记录方法包括以下步骤。 A转换步骤是通过使用空间光束调制器将光束转换为携带信息的信息光束。 聚焦步骤将信息光束聚焦在包括信息记录层的光学信息记录介质上。 照射步骤是用参考光束和信息光束照射光学信息记录介质，使得参考光束和信息光束通过使用光学部件在信息记录层上彼此相交。 旋转步骤通过使用用于执行角度多路复用记录的驱动单元旋转光学信息记录介质或光学部件。 管理信息记录步骤是将角度间隔小于两倍至少第一空角的两个或多个相对角度记录管理信息。

公开(公告)号：US20090003182A1

公开(公告)日：2009-01-01

申请号：US12146840

申请日：2008-06-26

申请人： Hideaki OKANO ,  Katsuo IWATA ,  Kazuhiro NAGATA

发明人： Hideaki OKANO ,  Katsuo IWATA ,  Kazuhiro NAGATA

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G11B7/1263 ,  G11B2007/0006

摘要： According to one embodiment, an APC photodetector accepts a light beam branched from a light beam toward a recording medium by a branching mirror and detects intensity of a light beam supplied from a light source, a light quantity adjusting element adjusts the intensity of the light beam, and the intensity of the light beam incident to the APC photodetector is changed in a continuous manner or a stepwise manner by the light quantity adjusting element. Therefore, when the single APC photodetector detects recording and reproducing light beams, the recording and reproducing light beams can fall within a dynamic range of the APC photodetector.

摘要翻译： 根据一个实施例，APC光电检测器通过分支镜接收从光束向记录介质分支的光束，并且检测从光源提供的光束的强度，光量调节元件调节光束的强度 并且入射到APC光电检测器的光束的强度由光量调节元件连续地或逐步地改变。 因此，当单个APC光电检测器检测到记录和再现光束时，记录和再现光束可以落在APC光电检测器的动态范围内。

公开(公告)号：US20070097833A1

公开(公告)日：2007-05-03

申请号：US11552208

申请日：2006-10-24

申请人： Hideaki OKANO ,  Katsuo Iwata ,  Kazuhiro Nagata

发明人： Hideaki OKANO ,  Katsuo Iwata ,  Kazuhiro Nagata

IPC分类号： G11B7/135

CPC分类号： G11B7/1353 ,  G11B7/0903

摘要： According to one embodiment, an optical head unit of the invention combines preferably and simplifies a diffraction pattern of a diffraction element to guide a reflected laser beam divided into a predetermined number to a photodetector, in order to provide an optical head unit and an optical disc apparatus which provide a stable reproducing signal irrespectively of the standards of recording media, when reproducing information from a recording medium of optional standard. By using the combined and simplified diffraction pattern, the optical head unit easily provides outputs usable to detect first, second and third signals used to detect a tracking error when reproducing information recorded on an optical disc from a reflected laser beam from an optical disc, a fourth signal used to detect a focus error, and a fifth signal used to detect a spherical aberration compensating component.

摘要翻译： 根据一个实施例，本发明的光头单元优选地并且简化了衍射元件的衍射图案，以将分成预定数量的反射激光束引导到光电检测器，以便提供光学头单元和光盘 当从可选标准的记录介质再现信息时，提供与记录介质的标准无关的稳定再现信号的装置。 通过使用组合和简化的衍射图案，光学头单元容易地提供可用于检测用于在从光盘反射的激光束再现记录在光盘上的信息时检测跟踪误差的第一，第二和第三信号的输出， 用于检测聚焦误差的第四信号，以及用于检测球面像差补偿分量的第五信号。