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    • 21. 发明授权
    • Method and apparatus for optical pattern recognition
    • 光学图案识别的方法和装置
    • US5619596A
    • 1997-04-08
    • US132660
    • 1993-10-06
    • Tadao IwakiNobuyuki KasamaShuhei YamamotoToshiharu TakesueYasuhiro Takemura
    • Tadao IwakiNobuyuki KasamaShuhei YamamotoToshiharu TakesueYasuhiro Takemura
    • G06K9/74G06F15/336
    • G06K9/748
    • An object of the invention is to provide a method and a apparatus for optical pattern recognition capable of accurately comparing and identifying a reference image accurately at a real-time even when the input image rotates or its size changes by being compared with a reference image that is a desirous target. The method and apparatus comprise the processes of; steps (6, 11) for independently obtaining a lower-frequency component and a higher-frequency component from a joint Fourier transform image 5 of the reference image 4 and the input image 3; steps (10, 15) for calculating correlation coefficients respectively from the lower-frequency component and the higher-frequency component; step (16) for obtaining a ratio of the respective correlation coefficients; and step (19) for identifying and comparing a correlation coefficient ratio of the two same reference images to be required with a correlation coefficient ratio obtained from step (16).
    • 本发明的目的是提供一种用于光学图案识别的方法和装置,其能够即使当输入图像旋转时也可以准确地比较和识别参考图像,或者通过与参考图像 是一个希望的目标。 该方法和装置包括: 步骤(6,11),用于从参考图像4和输入图像3的联合傅里叶变换图像5独立地获得低频分量和较高频分量; 步骤(10,15),用于分别从较低频率分量和较高频率分量计算相关系数; 步骤(16),用于获得各个相关系数的比率; 以及步骤(19),用于通过从步骤(16)获得的相关系数比来识别和比较要求的两个相同参考图像的相关系数比。
    • 22. 发明授权
    • Rangefinding/autofocusing device of joint transform correlation type and
driving method thereof
    • 联合变形相关型的测距/自动对焦装置及其驱动方法
    • US5544252A
    • 1996-08-06
    • US939130
    • 1992-09-02
    • Tadao IwakiYasuyki MitsuokaNobuyuki Kasama
    • Tadao IwakiYasuyki MitsuokaNobuyuki Kasama
    • G02B7/28G01B11/00G01C3/06G02B7/36G06K9/74H04N5/232G06K9/64
    • G06K9/748G02B7/36
    • A rangefinding/autofocusing apparatus utilizes a joint transform correlator of a Fourier correlation optical system. A pair of imaging lens systems form a pair of object input images. A lens driving mechanism drives the imaging lens systems in a parallel manner. The pair of object input images are recorded for display. A reference input image is displayed concurrently along with the recorded object input images in an offset relation relative to each other. A photodetector disposed on the correlation plane of the Fourier correlation optical system detects correlation peaks corresponding to a correlation coefficient of the pair of displayed object input images to measure an interval between the detected correlation peaks. The photodetector also detects correlation peaks corresponding to a correlation coefficient of the reference input image and the object input images to determine a correlation between the reference image and the object. A calculation unit calculates a distance between the object and the imaging lens systems to determine a just-focused state of the object depending on the measured interval. The lens driving mechanism shifts the imaging lens systems to thereby establish the just-focused state of the object. A target object is recognized depending on the correlation between the reference image and the object after the just-focused state is established.
    • 测距/自动对焦设备利用傅立叶相关光学系统的联合变换相关器。 一对成像透镜系统形成一对物体输入图像。 透镜驱动机构以并行方式驱动摄像透镜系统。 记录一对物体输入图像以进行显示。 参考输入图像与记录的对象输入图像一起以偏移关系相对于彼此同时显示。 设置在傅立叶相关光学系统的相关平面上的光电检测器检测与所显示的对象输入图像对的相关系数相对应的相关峰值,以测量检测到的相关峰值之间的间隔。 光电检测器还检测与参考输入图像和对象输入图像的相关系数相对应的相关峰值,以确定参考图像和对象之间的相关性。 计算单元计算物体和成像镜头系统之间的距离,以根据测量的间隔确定物体的刚刚聚焦的状态。 透镜驱动机构移动成像透镜系统,从而建立对象的刚刚聚焦的状态。 取决于在建立刚刚聚焦状态之后的参考图像和对象之间的相关性来识别目标对象。
    • 23. 发明授权
    • Holographic operating optical apparatus
    • 全息操作光学仪器
    • US5132811A
    • 1992-07-21
    • US545913
    • 1990-06-28
    • Tadao IwakiYasuyuki MitsuokaShuhei Yamamoto
    • Tadao IwakiYasuyuki MitsuokaShuhei Yamamoto
    • G03H1/02G03H1/04G03H1/16G03H1/22G06E3/00H04Q11/00
    • G06E3/005G03H1/16G03H1/22G03H1/2294G03H2001/0088G03H2222/56G03H2225/25G03H2226/11H04Q2011/002H04Q2011/0035
    • A holographic apparatus has an inferometer for concurrently irradiating an image recording medium by a writing reference light of spherical or plane wave form and a signal light containing image information which interfere with each other to form a hologram, and means for irradiating the hologram by a reading reference light in the opposite direction of the reference light to thereby reconstruct the image information. The image recording medium is comprised of a photoconductive layer, an optical reflective layer, a pair of liquid crystal alignment layers, a ferroelectric liquid crystal layer having bistable memory characteristic between its optical reflectivity and an applied voltage, means for applying the voltage and a pair of transparent substrates. The interferometer is preferably of the Mach-Zehnder type which includes along its signal light forming path an optical shutter, means for entering image information and an imagery optical system for optionally optically Fourier transforming the input image information and then enlarging the same to form the image on an otpical writing face of the light addressed liquid crystal light valve. By such construction, an extremely small holographic apparatus can be obtained to record and read the hologram in real time.
    • 全息装置具有用于通过球面或平面波形的写入基准光和包含彼此干涉以形成全息图的图像信息的信号光同时照射图像记录介质的推测器,以及用于通过读取照射全息图的装置 在参考光的相反方向上参考光,从而重建图像信息。 图像记录介质包括光电导层,光反射层,一对液晶取向层,在其光反射率和施加电压之间具有双稳态存储特性的铁电液晶层,用于施加电压和一对的装置 的透明基板。 干涉仪最好是马赫 - 曾德尔(Mach-Zehnder),它包括沿其信号光形成路径的光学快门,用于输入图像信息的装置和用于可选地光学傅立叶变换输入图像信息并且然后将其放大以形成图像的成像光学系统 在光寻址液晶光阀的口头写字面上。 通过这样的结构,可以获得极小的全息装置来实时记录和读取全息图。
    • 25. 发明授权
    • Spindle motor having air dynamic pressure bearing and rotating device
having the spindle motor as driving source
    • 主轴电动机具有空气动压轴承和旋转装置,其具有主轴电动机作为驱动源
    • US6127756A
    • 2000-10-03
    • US261902
    • 1999-03-03
    • Tadao IwakiKimio Komata
    • Tadao IwakiKimio Komata
    • G11B19/20F16C17/10F16C33/10F16C33/24H02K7/08H02G5/16
    • F16C33/107F16C17/026F16C17/045F16C17/102F16C17/105H02K7/088
    • A spindle motor has a rotor, a stator and an air dynamic pressure bearing for supporting the rotor for rotation about a rotational axis relative to the stator. The air dynamic pressure bearing comprises a first dynamic pressure bearing portion and a second dynamic pressure bearing portion. The first dynamic pressure bearing portion comprises a convex side bearing member having a conical convex portion, a concave side bearing member having a conical concave portion receiving the conical convex portion, and dynamic pressure generating grooves formed on one of a surface of the conical convex portion and a surface of the conical concave portion. The second dynamic pressure bearing portion comprises a shaft having a first end fixed to the concave side bearing member and extending along the rotational axis, a bore formed in the convex side bearing member for receiving a second end of the shaft to permit rotation of the convex side bearing member relative to the concave side bearing member about the shaft, and dynamic pressure grooves formed on one of an outer circumferential surface of the shaft and an inner circumferential surface of the bore.
    • 主轴电动机具有转子,定子和空气动压轴承,用于支撑转子相对于定子绕旋转轴线旋转。 空气动压轴承包括第一动压轴承部分和第二动压轴承部分。 第一动压轴承部分包括具有锥形凸部的凸侧支承构件,具有容纳锥形凸部的锥形凹部的凹侧支承构件和形成在锥形凸部的一个表面上的动压产生槽 和锥形凹部的表面。 第二动压轴承部分包括轴,其具有固定到凹侧支承构件并沿着旋转轴线延伸的第一端,形成在凸侧轴承构件中的孔,用于接收轴的第二端以允许凸起 侧轴承构件相对于凹侧支承构件绕轴旋转,动压槽形成在轴的外周面和孔的内周面之一上。
    • 27. 发明授权
    • Optically addressed spatial light modulating system bias light source
and method for driving the system
    • 光学寻址空间光调制系统偏光源和驱动系统的方法
    • US5555115A
    • 1996-09-10
    • US954316
    • 1992-09-30
    • Yasuyuki MitsuokaTadao IwakiNobuyuki Kasama
    • Yasuyuki MitsuokaTadao IwakiNobuyuki Kasama
    • G02F1/01G02F1/135G02F3/00
    • G02F1/135
    • An optically addressed spatial light modulating system comprises a spatial light modulator using a liquid crystal material. A writing light irradiation device irradiates a writing light which records an image onto the spatial light modulator. A reading out light irradiation device irradiates a reading out light which is used to read out the recorded image from the spatial light modulator. A bias light irradiation device irradiates a bias light onto the spatial light modulator, and a bias light adjustment device changes at least one of the irradiation time and the light intensity of the bias light. A driving device supplies writing voltage signals to the spatial light modulator. The irradiation time of the write light and the irradiation time of the bias light overlap with the application time of the write voltage of the spatial light modulator for a predetermined amount of time for adjusting the sensitivity of the spatial light modulator. Thus, the changing of the recording sensitivity of the optically addressed spatial light modulator is facilitated. It is also possible to write data into the spatial light modulator operating at a high speed by changing the threshold of the write image and to record an image with low write light intensity.
    • 光学寻址的空间光调制系统包括使用液晶材料的空间光调制器。 书写光照射装置将记录图像的写入光照射到空间光调制器上。 读出光照射装置照射用于从空间光调制器读出记录图像的读出光。 偏置光照射装置将偏光照射到空间光调制器上,偏置光调节装置改变偏光的照射时间和光强度中的至少一个。 驱动装置向空间光调制器提供写入电压信号。 写入光的照射时间和偏光的照射时间与用于调整空间光调制器的灵敏度的预定时间量的空间光调制器的写入电压的施加时间重叠。 因此,有助于光学寻址的空间光调制器的记录灵敏度的改变。 也可以通过改变写入图像的阈值并以低写入光强度记录图像来将数据写入高速操作的空间光调制器。
    • 30. 发明申请
    • Resin pipe joint unit
    • 树脂管接头单元
    • US20060244256A1
    • 2006-11-02
    • US11389115
    • 2006-03-27
    • Yukihiro HyobuRyuichi NakanoTadao Iwaki
    • Yukihiro HyobuRyuichi NakanoTadao Iwaki
    • F16L33/00F16L19/00
    • F16L47/04F16L19/025
    • A resin pipe joint is provided so that a general worker can easily connect a resin pipe material without using a special tool. The resin pipe joint unit includes synthetic resin joint bodies, a synthetic resin pipe unit, and junk rings. The synthetic resin joint bodies have tubular sockets at one end portion thereof. The synthetic resin pipe unit has predetermined diameter and length, and inner ring portions are integrally formed in at least one end of a pipe portion in the synthetic resin pipe unit. The junk rings are screwed on the sockets of the joint bodies. In the resin pipe joint unit, the pipe unit is connected to the joint bodies by pressing end faces of the inner ring portions toward the side of the joint bodies respectively, when the junk rings are screwed on the sockets of the joint bodies.
    • 设置树脂管接头,使得一般工人可以容易地连接树脂管材而不使用专用工具。 树脂管接头单元包括合成树脂接头体,合成树脂管单元和垃圾环。 合成树脂接头体的一端部具有管状插座。 合成树脂管单元具有预定的直径和长度,并且内环部分一体地形成在合成树脂管单元中的管部分的至少一端中。 垃圾圈拧在接头体的插座上。 在树脂管接头单元中,当将垃圾圈拧在接头体的插座上时,管单元通过分别将内环部分的端面朝向接头体的侧面分别连接到接头本体。