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51. 发明授权

US5404348A Method for recording and reproducing information using at least two energy beams 失效
标题翻译：使用至少两个能量束记录和再现信息的方法
公开(公告)号：US5404348A
公开(公告)日：1995-04-04
申请号：US634049
申请日：1990-12-26
申请人： Motoyasu Terao , Kunikazu Ohnishi , Tesuya Nishida , Hiroshi Yasuoka , Keikichi Ando , Norio Ohta , Hirofumi Sukeda , Yoshito Tsunoda , Toshimitsu Kaku
发明人： Motoyasu Terao , Kunikazu Ohnishi , Tesuya Nishida , Hiroshi Yasuoka , Keikichi Ando , Norio Ohta , Hirofumi Sukeda , Yoshito Tsunoda , Toshimitsu Kaku
IPC分类号： G11B7/0045 , G11B7/006 , G11B11/105 , G11B7/00
CPC分类号： G11B7/006 , G11B11/10506 , G11B11/10515 , G11B11/10517 , G11B7/00454
摘要： According to the present invention, a so-called overwrite operation which records new information while erasing existing information can be reliably performed in an information storage system such as optical disk system. In addition, whether the rewriting of recording has been properly done can be verified.
摘要翻译：根据本发明，可以在诸如光盘系统的信息存储系统中可靠地执行在擦除现有信息时记录新信息的所谓的重写操作。另外，可否验证记录重写是否正确完成。

52. 发明申请

US20120127846A1 OPTICAL INFORMATION DEVICE AND INTERLAYER MOVEMENT METHOD IN OPTICAL INFORMATION DEVICE 审中-公开
标题翻译：光信息设备中的光信息设备和中间层移动方法
公开(公告)号：US20120127846A1
公开(公告)日：2012-05-24
申请号：US13293304
申请日：2011-11-10
申请人： Kunikazu Ohnishi
发明人： Kunikazu Ohnishi
IPC分类号： G11B7/1374
CPC分类号： G11B7/08511 , G11B7/13925 , G11B2007/0006
摘要： Provided is a method of, in movement between recording layers of an optical disc, resolving a problem caused by an increase in spherical aberration change as a result of widening of a layer interval at which the movement is made and executing appropriate interlayer movement. An upper limit value is defined for a recording layer interval at which the interlayer movement can be made, and if a layer interval from a moving-source layer to a moving-target layer is equal to or larger than the upper limit value, the interlayer movement and spherical aberration correction are once carried out where a predetermined recording layer for which a layer interval is less than the upper limit value is defined as a temporary shelter layer, and the processing is repeated with this temporary shelter layer defined as a new moving-source recording layer to thereby realize favorable interlayer movement to the target layer.
摘要翻译：提供了一种在光盘的记录层之间移动的方法，其解决了作为移动的层间间隔的加宽和执行适当的层间移动而导致的球面像差变化的增加所引起的问题。对于可以进行层间移动的记录层间隔定义上限值，并且如果从移动源层到移动目标层的层间隔等于或大于上限值，则中间层一旦执行层间隔小于上限值的预定记录层被定义为临时遮蔽层，并且将该临时遮蔽层重新定义为新的移动 - 源记录层，从而实现对目标层的有利的层间移动。

53. 发明授权

US08149678B2 Diffraction grating, optical pickup and optical disc device 失效
$Diffraction grating, optical pickup and optical disc device$
标题翻译：衍射光栅，光学拾取器和光盘设备
公开(公告)号：US08149678B2
公开(公告)日：2012-04-03
申请号：US12417037
申请日：2009-04-02
申请人： Kunikazu Ohnishi
发明人： Kunikazu Ohnishi
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B2007/0013
摘要： Undesired disturbance components leak eventually into various detection signals and reproduction signals as stray optical beams reflected from recording layers other than a reproduction layer overlap with signal beams on a light reception surface of an optical detector and interference occurs between them when an optical disc having multi-layered recording layers is reproduced. A diffraction grating having a specific grating groove pattern is arranged immediately ahead of an optical detector or in a return optical path. Such optical unit averages the disturbance components resulting from interference between a signal beam and a stray beam and can satisfactorily improve influences of leak.
摘要翻译：不期望的干扰分量最终会泄漏到各种检测信号和再现信号中，因为从再生层以外的记录层反射的杂散光束与光学检测器的光接收表面上的信号光束重叠，并且当具有多个光盘的光盘时，复制分层记录层。具有特定格栅凹槽图案的衍射光栅布置在光学检测器的正前方或者在返回光路中。这样的光学单元平均化由信号光束和杂散光束之间的干涉导致的干扰分量，并且可以令人满意地改善泄漏的影响。

54. 发明授权

US08081550B2 Optical pickup device 失效
标题翻译：光学拾取装置
公开(公告)号：US08081550B2
公开(公告)日：2011-12-20
申请号：US12608121
申请日：2009-10-29
申请人： Kunikazu Ohnishi , Kazuyoshi Yamazaki
发明人： Kunikazu Ohnishi , Kazuyoshi Yamazaki
IPC分类号： G11B7/00 , G11B20/18
CPC分类号： G11B7/0917 , G11B7/0916 , G11B2007/0013
摘要： In a multilayer disc has an increased number of recording layers) spaced by spacing from each other, a generation interval between focus error (FE) signals detected from the respective recording layers becomes small. This causes mutual interference between the FE signals and a resulting undesired offset and the like in the signals, leading to a significantly deteriorated quality of the FE signals. To avoid this, in an optical pickup device according to the present invention, detection surfaces are newly added at positions adjacent to the FE signal detection surfaces, a predetermined detection signal obtained from the newly-added detection surfaces is multiplied by a predetermined coefficient value depending on the spacing between the recording layers, and the multiplied signal is subtracted from the original FE signal. As a result, mutual interference between the FE signals can be remarkably reduced.
摘要翻译：在多层盘中具有增加数量的记录层），间隔彼此间隔，从各个记录层检测到的聚焦误差（FE）信号之间的产生间隔变小。这导致FE信号之间的相互干扰和信号中产生的不期望的偏移等，导致FE信号的质量显着劣化。为了避免这种情况，在根据本发明的光学拾取装置中，在与FE信号检测表面相邻的位置处新添加检测表面，将从新添加的检测表面获得的预定检测信号乘以预定系数值取决于在记录层之间的间隔上，并且从原始FE信号中减去相乘的信号。结果，可以显着地减少FE信号之间的相互干扰。

55. 发明授权

US07656771B2 Optical pickup and optical disc drive 有权
标题翻译：光学拾取和光盘驱动器
公开(公告)号：US07656771B2
公开(公告)日：2010-02-02
申请号：US11508628
申请日：2006-08-22
申请人： Kenichi Shimada , Kunikazu Ohnishi , Nobuhiro Konuma
发明人： Kenichi Shimada , Kunikazu Ohnishi , Nobuhiro Konuma
IPC分类号： G11B7/00
CPC分类号： G11B7/1367 , G11B7/0903 , G11B2007/0006 , G11B2007/0013
摘要： An optical pickup for writing information to and/or for reading information from an optical disc having at least two recording layers (dual layer) provided with first and second recording layers can prevent layer crosstalk resulting from disturbing a signal reproduced from the first recording layer by a reflected light beam reflected from the second recording layer during a writing operation for writing information to the first recording layer or a reading operation for reading information from the fist recording layer. An orthogonal polarization region forming component forms an orthogonal polarization region, in which respective directions of polarization of a first light beam focused on and reflected by a first recording layer of an optical disc and a second light beam reflected by a second recording layer of the optical disc are perpendicular to each other, in a region, in which the first and the second light beam overlap each other, on a light-receiving surface of a detector. The orthogonal polarization region forming component is a polarization switch for changing the directions of polarization of part or all of the first and the second light beam.
摘要翻译：用于向具有第一和第二记录层的至少两个记录层（双层）的光盘写入信息和/或从其读取信息的光学拾取器可以防止由于干扰由第一记录层再现的信号而引起的层串扰在用于将信息写入第一记录层的写入操作期间从第二记录层反射的反射光束或用于从第一记录层读取信息的读取操作。正交偏振区域形成部件形成正交偏振区域，其中聚焦在光盘的第一记录层上的第一光束的偏振方向和由光学器件的第二记录层反射的第二光束在第一和第二光束彼此重叠的区域中，光盘在检测器的光接收表面上彼此垂直。正交偏振区域形成部件是用于改变第一和第二光束的部分或全部的偏振方向的偏振开关。

56. 发明授权

US08693075B2 Scan type image display device 失效
标题翻译：扫描型图像显示装置
公开(公告)号：US08693075B2
公开(公告)日：2014-04-08
申请号：US13450507
申请日：2012-04-19
申请人： Takeshi Nakao , Kunikazu Ohnishi , Hiromi Kita , Norio Hosaka
发明人： Takeshi Nakao , Kunikazu Ohnishi , Hiromi Kita , Norio Hosaka
IPC分类号： G02B26/12
CPC分类号： G02B26/101 , G02B27/0911 , G02B27/0955 , G03B21/2033 , G03B33/06 , G03B33/12 , H04N9/3129 , H04N9/3194
摘要： Optical beams emitted by optical sources are incident on a mirror surface of a scan mirror in a substantially vertical direction and reflected in a substantially vertical direction by the scan mirror. The mirror surface of the scan mirror is driven to repeatedly rotate two-dimensionally by a predetermined scan angle by a scan mirror drive circuit. A polarized beam splitter causes the optical beam emitted by the optical source to be incident on the scan mirror through a quarter wave plate, and outputs the optical beam that has been reflected by the scan mirror and passed through the quarter wave plate toward the screen. A scan angle expander is arranged on the output side of the polarized beam splitter, whereby the scan angle of the optical beam is increased by N times.
摘要翻译：由光源发射的光束以大致垂直的方向入射在扫描镜的镜面上，并通过扫描镜以基本上垂直的方向反射。通过扫描镜驱动电路驱动扫描镜的镜面被二维重复旋转预定的扫描角。偏振分束器使得由光源发射的光束通过四分之一波片入射到扫描镜上，并输出被扫描反射镜反射并通过四分之一波片的光束朝向屏幕。在偏振分束器的输出侧设置有扫描角扩展器，由此使光束的扫描角度增加N次。

57. 发明申请

US20130076800A1 SCANNING PROJECTION APPARATUS AND SCANNING IMAGE DISPLAY 审中-公开
标题翻译：扫描投影设备和扫描图像显示
公开(公告)号：US20130076800A1
公开(公告)日：2013-03-28
申请号：US13552682
申请日：2012-07-19
申请人： Michio HATAGI , Takeshi Nakao , Tomoto Kawamura , Kunikazu Ohnishi , Hiromi Kita
发明人： Michio HATAGI , Takeshi Nakao , Tomoto Kawamura , Kunikazu Ohnishi , Hiromi Kita
IPC分类号： G03B21/28 , G09G5/10
CPC分类号： H04N9/3129 , G02B26/105 , G02B27/1006 , G02B27/104 , G02B27/1066 , G02B27/141
摘要： In a light beam scanning projection apparatus which scans a light beam emitted from a laser light source, an image display apparatus is configured including a plurality of light beams, a reflection mirror for reflecting the light beams to project them onto a screen or the like, and a mirror driving unit for driving the reflection mirror so that the plurality of light beams are incident on the reflection mirror with different optical axes and projected on different projection areas, thereby displaying a single image with a plurality of images. Further, by forming a single image by causing a plurality of the light beams to have predetermined relative angles thereamong so as to make a plurality of images overlap on each other with slight shifts, a scanning projection apparatus is provided with which the luminance of the image is improved while conforming to safety standards.
摘要翻译：在扫描从激光光源发射的光束的光束扫描投影装置中，图像显示装置被配置为包括多个光束，用于反射光束以将其投影到屏幕等上的反射镜，以及反射镜驱动单元，用于驱动反射镜，使得多个光束以不同的光轴入射在反射镜上并投影在不同的投影区域上，从而显示具有多个图像的单个图像。此外，通过使多个光束以预定的相对角度形成单个图像，以便使多个图像彼此轻微地重叠，提供了一种扫描投影装置，其中图像的亮度在符合安全标准的情况下得到改进。

58. 发明授权

US08331207B2 Optical pickup and optical disc unit 失效
标题翻译：光学拾取器和光盘单元
公开(公告)号：US08331207B2
公开(公告)日：2012-12-11
申请号：US12074968
申请日：2008-03-07
申请人： Katsuhiko Izumi , Kazuyoshi Yamazaki , Tomoto Kawamura , Kunikazu Ohnishi
发明人： Katsuhiko Izumi , Kazuyoshi Yamazaki , Tomoto Kawamura , Kunikazu Ohnishi
IPC分类号： G11B7/00
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/0912 , G11B7/131 , G11B7/133 , G11B2007/0013
摘要： For use with a multi-layer optical disc, an optical pickup can eliminate a problem of causing a focus error signal and a tracking error signal to fluctuate due to interference of a signal light beam with a return light beam from another recording surface of a multi-layer optical disc during reproduction with an optical pickup that produces a tracking error signal and a focus error signal from a difference signal based on polarized reflected light.
摘要翻译：为了与多层光盘一起使用，光学拾取器可以消除由于信号光束与来自多个光盘的另一个记录表面的返回光束的干扰而导致聚焦误差信号和跟踪误差信号波动的问题在利用光学拾取器进行再现期间的光盘，其从基于偏振反射光的差分信号产生跟踪误差信号和聚焦误差信号。

59. 发明申请

US20120275002A1 SCAN TYPE IMAGE DISPLAY DEVICE 失效
标题翻译：扫描型图像显示装置
公开(公告)号：US20120275002A1
公开(公告)日：2012-11-01
申请号：US13450507
申请日：2012-04-19
申请人： Takeshi NAKAO , Kunikazu Ohnishi , Hiromi Kita , Norio Hosaka
发明人： Takeshi NAKAO , Kunikazu Ohnishi , Hiromi Kita , Norio Hosaka
IPC分类号： G02B26/10
CPC分类号： G02B26/101 , G02B27/0911 , G02B27/0955 , G03B21/2033 , G03B33/06 , G03B33/12 , H04N9/3129 , H04N9/3194
摘要： Optical beams emitted by optical sources are incident on a mirror surface of a scan mirror in a substantially vertical direction and reflected in a substantially vertical direction by the scan mirror. The mirror surface of the scan mirror is driven to repeatedly rotate two-dimensionally by a predetermined scan angle by a scan mirror drive circuit. A polarized beam splitter causes the optical beam emitted by the optical source to be incident on the scan mirror through a quarter wave plate, and outputs the optical beam that has been reflected by the scan mirror and passed through the quarter wave plate toward the screen. A scan angle expander is arranged on the output side of the polarized beam splitter, whereby the scan angle of the optical beam is increased by N times.
摘要翻译：由光源发射的光束以大致垂直的方向入射在扫描镜的镜面上，并通过扫描镜以基本上垂直的方向反射。通过扫描镜驱动电路驱动扫描镜的镜面被二维重复旋转预定的扫描角。偏振分束器使得由光源发射的光束通过四分之一波片入射到扫描镜上，并输出被扫描反射镜反射并通过四分之一波片的光束朝向屏幕。在偏振分束器的输出侧设置有扫描角扩展器，由此使光束的扫描角度增加N次。

60. 发明申请

US20100322047A1 OPTICAL PICKUP AND OPTICAL DISC APPARATUS 有权
标题翻译：光学拾取和光盘设备
公开(公告)号：US20100322047A1
公开(公告)日：2010-12-23
申请号：US12826827
申请日：2010-06-30
申请人： Toshiteru NAKAMURA , Shigeharu Kimura , Kunikazu Ohnishi , Toshio Sugiyama
发明人： Toshiteru NAKAMURA , Shigeharu Kimura , Kunikazu Ohnishi , Toshio Sugiyama
IPC分类号： G11B7/00
CPC分类号： G11B7/131 , G11B7/0912 , G11B7/0943 , G11B2007/0013
摘要： When recording/reproducing an optical disc having a recording layer of multi-layer structure, an unwanted optical beam reflected from a recording layer other than a target layer for recording/reproduction is incident on a photodetector to cause an unwanted disturbance component to leak to a detection signal, giving rise to a degradation in the quality of a tracking control signal. In an optical pickup apparatus, for suppression of the degradation, an optical element is mounted having a diffraction area for diffracting part of the optical beam and light receiving planes for sub-optical beams are provided each of which has a light shielding zone or dead zone of a predetermined width on its central sectioning line.
摘要翻译：当记录/再现具有多层结构的记录层的光盘时，从用于记录/再现的目标层以外的记录层反射的不需要的光束入射到光电检测器上，以使不需要的干扰成分泄漏到检测信号，导致跟踪控制信号的质量下降。在用于抑制劣化的光学拾取装置中，安装具有用于衍射光束的一部分的衍射区域的光学元件，并且每个具有遮光区域或死区的子光束的光接收平面在其中心切片线上具有预定宽度。

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