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1. 发明授权

US07903048B2 Information display apparatus and navigation apparatus 失效
标题翻译：信息显示装置和导航装置
公开(公告)号：US07903048B2
公开(公告)日：2011-03-08
申请号：US11629902
申请日：2005-06-16
申请人： Takuma Yanagisawa
发明人： Takuma Yanagisawa
IPC分类号： G09G5/00
CPC分类号： G01C21/36 , G02B27/01 , G02B2027/0118 , G02B2027/014 , G08G1/0969 , G09B29/108 , G09G3/34 , G09G2300/08
摘要： In an information display apparatus such as a head-up display, while safety is being secured, visibility from a user is improved. Image data having an object such as an arrow showing an advancing direction or a road sign drawn on it are generated as information to be given to the user by a display information generating section 12 and is output to a projector 13. When a light beam R1 corresponding to the image data is emitted from the projector 13 to a combiner 14, reflected light of the light beam R1 and transmitted light of external light R2 are combined in the combiner 14, so as to be viewed by the user. At this time, the display information generating section 12 outputs coordinate values showing a display position of the object to a transmittance control section 16, and the transmittance control section 16 specifies a display region of the object based on the coordinate values, and reduces the transmittance in the specified region of the light control panel 15 so as to reduce a transmitting amount of the external light R2.
摘要翻译：在诸如平视显示器的信息显示装置中，在确保安全性的同时，提高了用户的可视性。作为通过显示信息生成部12向用户提供的信息生成具有诸如表示前进方向的箭头的图像数据的图像数据，并且将其输出到投影仪13.当光束R1 对应于图像数据从投影仪13发射到组合器14，将光束R1的反射光和外部光R2的透射光组合在组合器14中，以供用户观看。此时，显示信息生成部12将表示对象的显示位置的坐标值输出到透射率控制部16，透射率控制部16基于坐标值指定对象的显示区域，并且降低透射率在光控制面板15的指定区域中，以减少外部光R2的透射量。

2. 发明授权

US07835237B2 Optical pickup device and information recording/reproducing apparatus 失效
标题翻译：光学拾取装置和信息记录/再现装置
公开(公告)号：US07835237B2
公开(公告)日：2010-11-16
申请号：US11995746
申请日：2006-07-13
申请人： Yasuo Tanahashi , Takuma Yanagisawa
发明人： Yasuo Tanahashi , Takuma Yanagisawa
IPC分类号： G11B7/00
CPC分类号： G11B7/0903 , G11B2007/0006
摘要： There are obtainable reliable and proper tracking correction and CTC even when fluctuations occur in an irradiation position of a sub-beam in a track at the time of performing tracking correction and CTC using three beams. Five beams (a main beam, sub-beams inA and inB, and sub-beams outA and outB) are generated. Reflection beams of the five beams are received, and a differential push pull signal DPPin corresponding to the sub-beams “in” as ± first-order beams and a differential push pull signal DPPout corresponding to the sub-beams “out” as ± second-order beams are generated. By assigning weights to the differential push pull signals DPPin and DPPout and computing the sum of the weighted signals, a tracking error signal Ste having an amplitude value which can perform tracking correction is generated.
摘要翻译：即使在执行跟踪校正时在轨道中的子光束的照射位置发生波动并且使用三个光束也可以获得可靠和适当的跟踪校正和CTC。生成五个光束（主光束，A和InB中的子光束，以及子光束outA和outB）。接收五个光束的反射光束，对应于子光束“in”的差分推挽信号DPPin为±一阶光束，对应于子光束“out”的差分推挽信号DPPout为±秒生成顺序波束。通过对差分推挽信号DPPin和DPPout分配权重并计算加权信号的和，产生具有能够执行跟踪校正的振幅值的跟踪误差信号Ste。

3. 发明申请

US20090103417A1 OPTICAL PICKUP DEVICE AND INFORMATION RECORDING/REPRODUCING APPARATUS 失效
标题翻译：光学拾取装置和信息记录/再现装置
公开(公告)号：US20090103417A1
公开(公告)日：2009-04-23
申请号：US11995746
申请日：2006-07-13
申请人： Yasuo Tanahashi , Takuma Yanagisawa
发明人： Yasuo Tanahashi , Takuma Yanagisawa
IPC分类号： G11B7/00
CPC分类号： G11B7/0903 , G11B2007/0006
摘要： There are obtainable reliable and proper tracking correction and CTC even when fluctuations occur in an irradiation position of a sub-beam in a track at the time of performing tracking correction and CTC using three beams. Five beams (a main beam, sub-beams inA and inB, and sub-beams outA and outB) are generated. Reflection beams of the five beams are received, and a differential push pull signal DPPin corresponding to the sub-beams “in” as ± first-order beams and a differential push pull signal DPPout corresponding to the sub-beams “out” as ± second-order beams are generated. By assigning weights to the differential push pull signals DPPin and DPPout and computing the sum of the weighted signals, a tracking error signal Ste having an amplitude value which can perform tracking correction is generated.
摘要翻译：即使在执行跟踪校正时在轨道中的子光束的照射位置发生波动并且使用三个光束也可以获得可靠和适当的跟踪校正和CTC。生成五个光束（主光束，A和InB中的子光束，以及子光束outA和outB）。接收五个光束的反射光束，对应于子光束“in”的差分推挽信号DPPin为±一阶光束，对应于子光束“out”的差分推挽信号DPPout为±秒生成顺序波束。通过对差分推挽信号DPPin和DPPout分配权重并计算加权信号的和，产生具有能够执行跟踪校正的振幅值的跟踪误差信号Ste。

4. 发明申请

US20070285338A1 Video Display System and Video Display Method 失效
标题翻译：视频显示系统和视频显示方式
公开(公告)号：US20070285338A1
公开(公告)日：2007-12-13
申请号：US11662946
申请日：2005-08-25
申请人： Takuma Yanagisawa
发明人： Takuma Yanagisawa
IPC分类号： G09G5/00
CPC分类号： G02B27/0101 , G02B2027/0127 , G02B2027/0138 , H04N5/23293 , H04N5/2621 , H04N5/272
摘要： An image display system includes a camera that shoots a background, a monitor that displays a shot background image, and an optical lens arranged between a display surface of the monitor and an observer. An imaginary image, obtained due to presence of the optical lens, of the monitor image is made to substantially match with a background surface. As a result, when the observer views the background through the monitor, the monitor image and the background look continuous to him.
摘要翻译：图像显示系统包括拍摄背景的相机，显示拍摄背景图像的监视器和布置在监视器的显示表面和观察者之间的光学透镜。使得由于光学透镜的存在而获得的监视图像的假想图像与背景表面基本匹配。结果，当观察者通过监视器观看背景时，监视器图像和背景看起来与他连续。

5. 发明授权

US06865144B2 Optical pickup apparatus and tilt amount detecting method 失效
标题翻译：光拾取装置和倾斜量检测方法
公开(公告)号：US06865144B2
公开(公告)日：2005-03-08
申请号：US09921308
申请日：2001-08-03
申请人： Takuma Yanagisawa , Yoshitsugu Araki , Takanori Maeda , Masayuki Iwasaki
发明人： Takuma Yanagisawa , Yoshitsugu Araki , Takanori Maeda , Masayuki Iwasaki
IPC分类号： G11B7/095 , G11B7/13 , G11B7/00
CPC分类号： G11B7/131 , G11B7/0956
摘要： An optical pickup apparatus includes a photodetector for receiving a diffracted light reflected from the recording medium; and a tilt detector for detecting a tilt amount of the recording medium on the basis of a light intensity within an interference region of a 0th-order diffraction light and at least one diffraction light other than the 0th-order diffraction light of the reflected light received by the photodetector.
摘要翻译：光拾取装置包括：光电检测器，用于接收从记录介质反射的衍射光; 以及倾斜检测器，用于基于在0级衍射光的干涉区域内的光强度和除了所接收到的反射光的0级衍射光以外的至少一种衍射光来检测记录介质的倾斜量通过光电检测器。

6. 发明授权

US06801491B1 Focus error detecting apparatus of optical pickup with a light separating and astigmatism generation optical element and detection method thereof 失效
标题翻译：具有光分离和像散生成光学元件的光学拾取器的聚焦误差检测装置及其检测方法
公开(公告)号：US06801491B1
公开(公告)日：2004-10-05
申请号：US09511547
申请日：2000-02-23
申请人： Masakazu Ogasawara , Takuma Yanagisawa , Sakashi Ohtaki
发明人： Masakazu Ogasawara , Takuma Yanagisawa , Sakashi Ohtaki
IPC分类号： G11B700
CPC分类号： G11B7/131 , G11B7/0909 , G11B7/0943 , G11B7/1381 , G11B2007/0006
摘要： A focus error detecting apparatus and a focus error detecting method of an optical pickup in which the system is not easily influenced by track transversal noises and an optical disc thickness error and which can be used together with a 3-beam system or a DPD system. The return light from an optical disc is divided to a first optical path and a second optical path by a hologram device, a predetermined astigmatism is applied to the light on each divided optical path, the light is received and detected by a first detector and a second detector, and a focusing error signal is obtained by predetermined arithmetic operations. The return light from the optical disc is divided to the first optical path P1 and the second optical path P2 by a lens device constructed by combining eccentric cylindrical lenses, a predetermined astigmatism is applied to the light on each divided optical path, the light is received and detected by a first detector and a second detector each having photosensing portions divided into four portions by dividing lines having a lightning shape, and a focusing error signal is obtained by predetermined arithmetic operations.
摘要翻译：光学拾取器的聚焦误差检测装置和聚焦误差检测方法，其中系统不容易受到轨道横向噪声和光盘厚度误差的影响，并且可以与三光束系统或DPD系统一起使用。来自光盘的返回光被全息装置分割为第一光路和第二光路，对每个划分的光路上的光施加预定的散光，由第一检测器和第二检测器接收和检测光第二检测器，并且通过预定的算术运算获得聚焦误差信号。通过将偏心柱面透镜组合而构成的透镜装置将来自光盘的返回光分成第一光路P1和第二光路P2，对每条划分的光路上的光施加预定的像散，接收光并且由具有闪电形状的划分线的具有被分成四部分的光敏部分的第一检测器和第二检测器检测，并且通过预定的算术运算获得聚焦误差信号。

7. 发明授权

US5850081A Method for generating a focus error signal due to astigmatism and optical pickup device using the same 失效
标题翻译：用于产生由于散光引起的聚焦误差信号的方法和使用其的光学拾取装置
公开(公告)号：US5850081A
公开(公告)日：1998-12-15
申请号：US904490
申请日：1997-08-01
申请人： Takuma Yanagisawa
发明人： Takuma Yanagisawa
IPC分类号： G11B7/085 , G11B7/09 , G11B7/13 , G11B7/135 , G11B7/00
CPC分类号： G11B7/131 , G11B7/094 , G11B7/0943 , G11B7/1353 , G11B7/1365 , G11B7/1372 , G11B7/0909
摘要： A method of generating a focus error signal in an optical pickup device including a photodetector including a light receiving surface for receiving the reflected light and divided into first to fourth quadrants defined in a tangential direction and in a radial direction from the center of the light receiving surface and at least four elements positioned in a centrally symmetric relationship with respect to the center of the light receiving surface within the first to fourth quadrants. A preliminary focus error signal is generated as an output difference between an addition output of one pair of the elements placed on centrally symmetric positions of the photodetector and an addition output of the other pair of the elements placed on centrally symmetric positions of the photodetector. A tangential push-pull signal is generated as an output difference between an addition output of one pair of the elements placed along the radial direction of the photodetector and an addition output of the other pair of the elements placed along the radial direction of the photodetector. A radial push-pull signal is generated as an output difference between an addition result of one pair of the elements placed along the tangential direction of the photodetector and an output result of the other pair of the elements placed along the tangential direction of the photodetector. The tangential push-pull signal and the radial push-pull signal is multiplied to generate a correction signal. The difference between the preliminary focus error signal and the correction signal is calculated to generate a focus error signal.
摘要翻译：一种在包括光检测器的光拾取装置中产生聚焦误差信号的方法，所述光拾取装置包括用于接收反射光的光接收表面，并且被分为从光接收中心沿切线方向和径向方向限定的第一至第四象限表面和至少四个元件相对于第一至第四象限内的光接收表面的中心定位成中心对称关系。产生预聚焦误差信号作为放置在光检测器的中心对称位置上的一对元件的相加输出与放置在光电检测器的中心对称位置上的另一对元件的相加输出之间的输出差。产生切向推挽信号作为沿着光电检测器的径向放置的一对元件的相加输出和沿着光电检测器的径向放置的另一对元件的相加输出之间的输出差。产生径向推挽信号作为沿着光电检测器的切线方向放置的一对元件的相加结果与另一对元件沿着光电检测器的切线方向放置的输出结果之间的输出差。将切向推挽信号和径向推挽信号相乘以产生校正信号。计算出初步聚焦误差信号和校正信号之间的差异以产生聚焦误差信号。

8. 发明授权

US5455817A Second harmonics generating optical recording layer 失效
标题翻译：二次谐波生成光记录层
公开(公告)号：US5455817A
公开(公告)日：1995-10-03
申请号：US106698
申请日：1993-08-16
申请人： Takuma Yanagisawa , Seiichi Ohsawa
发明人： Takuma Yanagisawa , Seiichi Ohsawa
IPC分类号： G11B7/00 , G11B7/005 , G11B7/125 , G11B7/135 , G11B7/24 , G11B7/258 , G11B7/26
CPC分类号： G11B7/258 , G11B7/005 , G11B7/24
摘要： A reflective film is formed over a recording surface of an optical disk on which pits are formed. The reflective film is made of a non-linear optical material which, when light is incident thereon, generates second harmonics of the incident light. In a reproduction optical system for reproducing this optical disk, when a reading beam reflected by the reflective film of the optical disk impinges on a filter for filtering out the basic wave of the reading beam, the filter only transmits the second harmonics which are then incident on a light receiver. Since information signals recorded on an optical disk is reproduced by reading only second harmonics of the reflected beam, the cut-off spatial frequency of the OTF can be made twice higher as compared with a conventional reproducing apparatus. In other words, the recording density of the recording medium can be made higher.
摘要翻译：反射膜形成在其上形成有凹坑的光盘的记录表面上。反射膜由非线性光学材料制成，当光入射时，其产生入射光的二次谐波。在用于再现该光盘的再现光学系统中，当由光盘的反射膜反射的读取光束入射到滤光器上以滤除读取光束的基波时，滤光器仅传输随后入射的第二谐波在光接收器上。由于通过仅读取反射光束的二次谐波来再现记录在光盘上的信息信号，所以与常规的再现装置相比，OTF的截止空间频率可以提高两倍。换句话说，可以使记录介质的记录密度更高。

9. 发明授权

US07821899B2 Optical pickup device 失效
标题翻译：光学拾取装置
公开(公告)号：US07821899B2
公开(公告)日：2010-10-26
申请号：US11996430
申请日：2006-07-03
申请人： Takuma Yanagisawa , Masakazu Ogasawara
发明人： Takuma Yanagisawa , Masakazu Ogasawara
IPC分类号： G11B7/00
CPC分类号： G11B7/1381 , G11B7/0903 , G11B7/094 , G11B7/1353
摘要： The present invention provides an optical pickup device requiring no position adjustment of a diffraction grating at the time of assembling the optical pickup device, and capable of suppressing fluctuations in a differential push-pull signal amplitude and cancelling a push-pull offset.An optical pickup device 200 of an embodiment of the present invention has a diffraction grating 230 of a special shape including predetermined grooves and two kinds of lattice grooves arranged at a pitch determined on the basis of a pitch of grooves formed in the surface of an optical disk 50, numerical aperture, wavelength of a light beam, and effective diameter of the light beam applied on the optical disk 50. To suppress push-pull signals generated in the ± first-order diffraction rays, reflection rays from the optical disk 50 of a zeroth-order diffraction ray and ± first-order diffraction rays are detected, and signals corresponding to light reception results are output to a reproduction unit 150, a control unit 130, and an actuator servo circuit 140.
摘要翻译：本发明提供了一种在组装光学拾取装置时不需要对衍射光栅进行位置调整并且能够抑制差分推挽信号振幅的波动并取消推挽偏移的光学拾取装置。本发明实施例的光学拾取装置200具有特殊形状的衍射光栅230，该衍射光栅230包括预定的凹槽和两个格栅槽，它们以基于在光学器件表面形成的凹槽的间距所确定的间距盘50，数值孔径，光束波长和施加在光盘50上的光束的有效直径。为了抑制在±一级衍射光线中产生的推挽信号，来自光盘50的反射光线检测到零级衍射线和±一级衍射线，并且将对应于光接收结果的信号输出到再现单元150，控制单元130和致动器伺服电路140。

10. 发明申请

US20100177619A1 PICKUP DEVICE 失效
标题翻译：扒手装置
公开(公告)号：US20100177619A1
公开(公告)日：2010-07-15
申请号：US12376595
申请日：2006-10-04
申请人： Makoto Sato , Masakazu Ogasawara , Takuma Yanagisawa
发明人： Makoto Sato , Masakazu Ogasawara , Takuma Yanagisawa
IPC分类号： G11B7/00
CPC分类号： G11B7/0901 , G11B7/0909 , G11B7/133 , G11B7/1353 , G11B2007/0013
摘要： A pickup device which, focusing a ray bundle on a track of a recording surface of an optical recording medium to form a light spot, comprises a detection optical system including a photo detector to receive return light reflected from the light spot via an objective lens and perform photoelectric conversion. The photo detector has at least two photoreceptor sections positioned axis-symmetrical with respect to a detection-side division line extending through an optical axis of the return light and parallel to the track. A dividing element placed in an optical path between the photo detector and the objective lens includes at least two inner divided areas positioned axis-symmetrical with respect to a deflection-side division line extending through the optical axis of the return light and parallel to the track, and at least two outer divided areas positioned sandwiching the inner divided areas and axis-symmetrical with respect to the deflection-side division line. The inner divided areas are formed such that parts of a light beam from the other region than overlap regions, divided axis-symmetrically along the deflection-side division line, are exchanged in position across the detection-side division line and directed to the photoreceptor sections of the photo detector so as to be axis-symmetrical with respect to the detection-side division line.
摘要翻译：一种拾取装置，其将光束聚焦在光记录介质的记录表面的轨道上以形成光点，包括检测光学系统，其包括光电检测器，以接收经由物镜从光点反射的返回光;以及执行光电转换。光检测器具有至少两个相对于延伸通过返回光的光轴并平行于轨道的检测侧分割线轴对称的感光体部分。放置在光检测器和物镜之间的光路中的分隔元件包括至少两个相对于延伸穿过返回光的光轴并平行于轨道的偏转侧分割线轴对称的内分割区域以及至少两个外分割区域，其定位为夹着内分割区域并相对于偏转侧分割线轴对称。内部分割区域被形成为使得来自另一区域的光束的部分比沿着偏转侧分割线轴对称分割的重叠区域的部分在检测侧分割线上交替位置并且被引导到感光体部分的光检测器相对于检测侧分割线轴对称。

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