公开(公告)号：US20120188864A1

公开(公告)日：2012-07-26

申请号：US13333539

申请日：2011-12-21

申请人： Kimihiro Saito ,  Yojiro Sumi ,  Seiji Kobayashi

发明人： Kimihiro Saito ,  Yojiro Sumi ,  Seiji Kobayashi

IPC分类号： G11B7/00 ,  G11B3/70

CPC分类号： G11B7/24038 ,  G11B7/24027 ,  G11B7/24044

摘要： A recording medium includes a photosensitive layer, a nonphotosensitive layer, and a recording layer formation region in which the photosensitive layer and the nonphotosensitive layer are laminated. The photosensitive layer includes a recording layer in which interference fringes formed in parallel with a recording medium surface are deleted or changed within a portion irradiated with focused light to record information or light reflected during irradiation of focused light is used to reproduce information.

摘要翻译： 记录介质包括感光层，非感光层和层叠感光层和非光敏层的记录层形成区域。 感光层包括记录层，其中与记录介质表面平行形成的干涉条纹在被聚焦光照射的部分中被删除或改变以记录信息或者在聚焦光的照射期间反射的光被用于再现信息。

公开(公告)号：US08488430B2

公开(公告)日：2013-07-16

申请号：US13333539

申请日：2011-12-21

申请人： Kimihiro Saito ,  Yojiro Sumi ,  Seiji Kobayashi

发明人： Kimihiro Saito ,  Yojiro Sumi ,  Seiji Kobayashi

IPC分类号： G11B7/00

CPC分类号： G11B7/24038 ,  G11B7/24027 ,  G11B7/24044

摘要： A recording medium includes a photosensitive layer, a nonphotosensitive layer, and a recording layer formation region in which the photosensitive layer and the nonphotosensitive layer are laminated. The photosensitive layer includes a recording layer in which interference fringes formed in parallel with a recording medium surface are deleted or changed within a portion irradiated with focused light to record information or light reflected during irradiation of focused light is used to reproduce information.

摘要翻译： 记录介质包括感光层，非感光层和层叠感光层和非光敏层的记录层形成区域。 感光层包括记录层，其中与记录介质表面平行形成的干涉条纹在被聚焦光照射的部分中被删除或改变以记录信息或者在聚焦光的照射期间反射的光被用于再现信息。

公开(公告)号：US20120127848A1

公开(公告)日：2012-05-24

申请号：US13293386

申请日：2011-11-10

申请人： Kimihiro Saito ,  Seiji Kobayashi ,  Yojiro Sumi

发明人： Kimihiro Saito ,  Seiji Kobayashi ,  Yojiro Sumi

IPC分类号： G11B7/26

CPC分类号： G11B7/268 ,  G11B7/24044

摘要： There is provided a method of initializing a recording medium having a first surface and a second surface which face to each other with a recording layer in between. The method includes forming interference patterns to have a pitch wider than λr/2N by applying initializing light of a plane wave with a wavelength λf to the recording layer from both of the first surface side and the second surface side, where λr is a wavelength of reproducing light applied to the recording layer at the time of reproducing recorded information, and N is an average refractive index of the recording layer.

摘要翻译： 提供了一种初始化具有第一表面和第二表面的记录介质的方法，该第一表面和第二表面之间具有记录层。 该方法包括通过从波长λf的第一表面侧和第二表面侧向记录层施加具有波长λf的平面波的初始化光，形成具有比λr/ 2N宽的间距的干涉图案，其中λr为 在再现记录信息时再现施加到记录层的光，N是记录层的平均折射率。

公开(公告)号：US08305866B2

公开(公告)日：2012-11-06

申请号：US12951967

申请日：2010-11-22

申请人： Norihiro Tanabe ,  Kimihiro Saito ,  Takahiro Miura ,  Yojiro Sumi ,  Noriaki Nishi

发明人： Norihiro Tanabe ,  Kimihiro Saito ,  Takahiro Miura ,  Yojiro Sumi ,  Noriaki Nishi

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G11B7/0953 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/13927

摘要： A pickup apparatus includes a light source; a light separator; an object lens that concentrates the light which penetrated the light separator on the optical recording medium; a movable lens; and a light sensing element that receives the reflected light from the optical recording medium separated by the light separator, wherein a coma aberration generated by the transverse shift of the object lens is corrected by a coma aberration which is generated by the deviation of a spherical aberration generated in an optical path from the light source to the object lens and a spherical aberration generated in an optical path from the object lens to a light concentration position on the optical recording medium which are due to the transverse shift.

摘要翻译： 拾取装置包括光源; 光分离器 将透过光分离器的光集中在光记录介质上的物镜; 可移动镜头; 以及光接收来自由光分离器分离的光记录介质的反射光的光感测元件，其中由透镜的横向偏移产生的彗形像差由通过球面像差的偏差产生的彗差来校正 在从光源到物镜的光路中产生的球面像差，以及由于横向偏移而从物镜到光记录介质上的光聚集位置的光路中产生的球面像差。

公开(公告)号：US20110134742A1

公开(公告)日：2011-06-09

申请号：US12951967

申请日：2010-11-22

申请人： Norihiro Tanabe ,  Kimihiro Saito ,  Takahiro Miura ,  Yojiro Sumi ,  Noriaki Nishi

发明人： Norihiro Tanabe ,  Kimihiro Saito ,  Takahiro Miura ,  Yojiro Sumi ,  Noriaki Nishi

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G11B7/0953 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/13927

摘要： A pickup apparatus includes a light source; a light separator; an object lens that concentrates the light which penetrated the light separator on the optical recording medium; a movable lens; and a light sensing element that receives the reflected light from the optical recording medium separated by the light separator, wherein a coma aberration generated by the transverse shift of the object lens is corrected by a coma aberration which is generated by the deviation of a spherical aberration generated in an optical path from the light source to the object lens and a spherical aberration generated in an optical path from the object lens to a light concentration position on the optical recording medium which are due to the transverse shift.

摘要翻译： 拾取装置包括光源; 光分离器 将透过光分离器的光集中在光记录介质上的物镜; 可移动镜头; 以及光接收来自由光分离器分离的光记录介质的反射光的光感测元件，其中由透镜的横向偏移产生的彗形像差由通过球面像差的偏差产生的彗差来校正 在从光源到物镜的光路中产生的球面像差，以及由于横向偏移而从物镜到光记录介质上的光聚集位置的光路中产生的球面像差。

公开(公告)号：US20120069722A1

公开(公告)日：2012-03-22

申请号：US13233269

申请日：2011-09-15

申请人： Takahiro Miura ,  Yojiro Sumi

发明人： Takahiro Miura ,  Yojiro Sumi

IPC分类号： G11B7/00

CPC分类号： G11B7/1362 ,  G11B7/00452 ,  G11B7/0908 ,  G11B7/0938 ,  G11B7/13 ,  G11B7/1359 ,  G11B7/1365 ,  G11B7/1378 ,  G11B2007/0009

摘要： A reproducing device includes a homodyne detection part that carries out homodyne detection by using reflected light of first light obtained from a recording layer as signal light and using reflected light of second light by a mirror as reference light, a signal reproducing part that obtains a reproduced signal based on the signal light, based on a result of homodyne detection, and a one-axis actuator that drives the mirror. The reproducing device further includes an optical path length servo control part that carries out driving control of the one-axis actuator in such a manner that the optical path length difference between the signal light and the reference light is kept constant, and an offset giving part that gives an offset that reduces or enlarges the amplitude difference of the reproduced signal of marks that are recorded in the recording layer and have sizes different from each other.

摘要翻译： 一种再现装置，包括：通过使用从记录层获得的第一光的反射光作为信号光并使用由反射镜作为参考光的第二光的反射光进行零差检测的零差检测部，获得再现的信号再现部 基于信号光的信号，基于零差检测的结果，以及驱动反射镜的单轴致动器。 再现装置还包括光路长度伺服控制部分，其以使得信号光和参考光之间的光程长度差保持恒定的方式执行单轴致动器的驱动控制，以及偏移给定部分 其给出了减小或放大记录在记录层中的标记的再现信号的幅度差并具有彼此不同的尺寸的偏移。

公开(公告)号：US08553516B2

公开(公告)日：2013-10-08

申请号：US13233269

申请日：2011-09-15

申请人： Takahiro Miura ,  Yojiro Sumi

发明人： Takahiro Miura ,  Yojiro Sumi

IPC分类号： G11B7/00

CPC分类号： G11B7/1362 ,  G11B7/00452 ,  G11B7/0908 ,  G11B7/0938 ,  G11B7/13 ,  G11B7/1359 ,  G11B7/1365 ,  G11B7/1378 ,  G11B2007/0009

摘要： A reproducing device includes a homodyne detection part that carries out homodyne detection by using reflected light of first light obtained from a recording layer as signal light and using reflected light of second light by a mirror as reference light, a signal reproducing part that obtains a reproduced signal based on the signal light, based on a result of homodyne detection, and a one-axis actuator that drives the mirror. The reproducing device further includes an optical path length servo control part that carries out driving control of the one-axis actuator in such a manner that the optical path length difference between the signal light and the reference light is kept constant, and an offset giving part that gives an offset that reduces or enlarges the amplitude difference of the reproduced signal of marks that are recorded in the recording layer and have sizes different from each other.

摘要翻译： 一种再现装置，包括：通过使用从记录层获得的第一光的反射光作为信号光并使用由反射镜作为参考光的第二光的反射光进行零差检测的零差检测部，获得再现的信号再现部 基于信号光的信号，基于零差检测的结果，以及驱动反射镜的单轴致动器。 再现装置还包括光路长度伺服控制部分，其以使得信号光和参考光之间的光程长度差保持恒定的方式执行单轴致动器的驱动控制，以及偏移给定部分 其给出了减小或放大记录在记录层中的标记的再现信号的幅度差并具有彼此不同的尺寸的偏移。