Method and system to align holographic images
    2.
    发明授权
    Method and system to align holographic images 失效
    对齐全息图像的方法和系统

    公开(公告)号:US5982513A

    公开(公告)日:1999-11-09

    申请号:US20469

    申请日:1998-02-09

    IPC分类号: G03H1/26

    CPC分类号: G03H1/26

    摘要: A method and a system to re-align onto a detector array a holographic image of a Fourier region hologram stored in a medium, with the medium spinning around a first axis, and the hologram being generated by a reference beam and a signal beam. In generating the hologram, the reference beam is incident on the medium with respect to a second axis at a second-axis-incident angle, and a third axis at a third-axis-incident angle, such that the holographic image of the hologram when reproduced by the reference beam is aligned onto the detector array. Also, the three axes are substantially orthogonal to each other. As the medium spins, the medium's orientation can change through tilting with respect to the second and the third axes so that the holographic image when reproduced by the reference beam is not aligned onto the detector array. In one embodiment, the holographic image is re-aligned onto the detector array by tilting the reference beam such that when re-aligned, the incident angle of the reference beam on the medium with respect to the second axis is intentionally tilted to be different from the second-axis-incident angle, and with respect to the third axis to be different from the third-axis-incident angle.

    摘要翻译: 一种方法和系统,用于将介质围绕第一轴旋转,并且由参考光束和信号光束产生的全息图将存储在介质中的傅立叶区域全息图的全息图像重新对准到检测器阵列。 在产生全息图时,参考光束以第二轴入射角相对于第二轴入射在介质上,第三轴以第三轴入射角入射,使得全息图的全息图当 由参考光束再现被对准到检测器阵列上。 此外,三个轴线基本上彼此正交。 当介质旋转时,介质的取向可以通过相对于第二和第三轴的倾斜而改变,使得当被参考光束再现时的全息图像未对准检测器阵列。 在一个实施例中,通过倾斜参考光束将全息图像重新对准到检测器阵列上,使得当重新对准时,介质上参考光束相对于第二轴的入射角有意地倾斜以与 第二轴入射角,并且相对于第三轴相对于第三轴入射角不同。

    Non-volatile readout of shift multiplexed holograms
    3.
    发明授权
    Non-volatile readout of shift multiplexed holograms 失效
    移位复用全息图的非易失性读出

    公开(公告)号:US5978112A

    公开(公告)日:1999-11-02

    申请号:US753403

    申请日:1996-11-25

    IPC分类号: G03H1/26 G11B7/0065

    摘要: The present invention is a holographic reconstruction device for reconstructing successive holograms previously recorded by a recording reference beam in a recording medium, each previously recorded successive hologram being spaced apart a recording displacement. The recording reference beam has a recording wavelength in the range where the recording medium is photosensitive and a recording propagation angle. The device comprises a reconstruction mechanism having a reconstruction reference beam with a reconstruction wavelength in the range where the recording medium is relatively photo-insensitive and a reconstruction propagation angle. The reconstruction reference beam is provided onto the recording medium. Also, a succession of relative displacements in the recording medium is produced and each of the displacements are equal to the distance of the recording displacements with which the holograms were previously recorded. In addition, a detection device detects reconstruction of the previously recorded holograms at the reconstruction wavelength.

    摘要翻译: 本发明是一种用于重建由记录介质中的记录参考光束先前记录的连续全息图的全息重建装置,每个先前记录的连续的全息图间隔开记录位移。 记录参考光束具有在记录介质是感光的范围内的记录波长和记录传播角度。 该装置包括具有在记录介质相对不敏感的范围内具有重建波长的重建参考光束和重建传播角度的重建机构。 重建参考光束被提供到记录介质上。 此外,产生记录介质中的一系列相对位移,并且每个位移等于先前记录全息图的记录位移的距离。 此外,检测装置检测在重建波长下先前记录的全息图的重建。

    Spatial integrating optical correlator for verifying the authenticity of
a person, product or thing
    4.
    发明授权
    Spatial integrating optical correlator for verifying the authenticity of a person, product or thing 失效
    空间积分光学相关器,用于验证人,产品或物品的真实性

    公开(公告)号:US5841907A

    公开(公告)日:1998-11-24

    申请号:US890380

    申请日:1997-07-11

    摘要: A method of verifying the authenticity of an object is disclosed employing a spatial integrating optical correlator. An unreadable and hence non-counterfeitable mask (e.g., a. complex mask or a phase mask) is coupled to the object and the optical correlator compares the mask with a reference mask on which it is scanned over. The correlator produces a correlation spot or image having an intensity which exceeds a given level if the mask is genuine. An alternate embodiment includes a fingerprint or other personalized pattern bonded to the mask, and the fingerprint or other personalized pattern on the card is compared to a reference fingerprint or other personalized pattern of the card holder for added security.

    摘要翻译: 公开了一种使用空间积分光学相关器验证物体的真实性的方法。 不可读且因此不可伪造的掩模(例如,复合掩模或相位掩模)被耦合到对象,并且光相关器将掩模与其上扫描的参考掩码进行比较。 如果掩模是真的,相关器产生具有超过给定水平的强度的相关斑点或图像。 替代实施例包括粘贴到掩模的指纹或其他个性化图案,并将卡上的指纹或其他个性化图案与卡夹的参考指纹或其他个性化图案进行比较以增加安全性。

    Non-destructive readout mechanism for volume holograms using two
wavelengths
    5.
    发明授权
    Non-destructive readout mechanism for volume holograms using two wavelengths 失效
    使用两个波长的体积全息图的非破坏性读出机构

    公开(公告)号:US5438439A

    公开(公告)日:1995-08-01

    申请号:US106288

    申请日:1993-08-13

    摘要: Multiple volume holograms are recorded by changing the incidence angle of the reference beam at one wavelength. The stored holograms are reconstructed at another wavelength by using the reference beam oriented at the proper incidence angle. The proper holographic data are retrieved by pre-formatting or post-formatting the holographic data to be recorded or reconstructed. This usage of using different wavelengths for recording and reconstruction are independent of the scanning mechanisms for the reference beam. Utilization of holographic memories for storage and retrieval of data, and correlations can make use of this invention.

    摘要翻译: 通过改变参考光束在一个波长的入射角来记录多个体积全息图。 通过使用以适当入射角定向的参考光束,在另一波长处重构存储的全息图。 通过预先格式化或后格式化待记录或重建的全息数据来检索适当的全息数据。 使用不同波长进行记录和重构的方法与参考光束的扫描机制无关。 利用全息存储器来存储和检索数据,以及相关性可以利用本发明。

    Fingerprint sensing system using a sheet prism
    7.
    发明授权
    Fingerprint sensing system using a sheet prism 失效
    指纹感应系统采用片状棱镜

    公开(公告)号:US5796858A

    公开(公告)日:1998-08-18

    申请号:US646531

    申请日:1996-05-10

    CPC分类号: G06K9/00046

    摘要: In one embodiment, a fingerprint sensing system includes a sheet prism having a sensing surface and a number of prismlets positioned opposite to the sensing surface. Each prismlet has an entrance surface and an exit surface, and is adjacent to another prismlet. The width of the sheet is more than ten times the maximum thickness of any one of the prismlets. When a finger is positioned on the sensing surface, a portion of the radiation entering a number of the entrance surfaces and incident at the sensing surface is reflected through total internal reflection. The reflected radiation emits from a number of the exit surfaces to create an image of the fingerprint. In another embodiment, the system further includes a second sheet prism stacked together with the previously described sheet prism. The second sheet prism has a flat surface and a number of prismlets positioned opposite to the flat surface, which faces the prismlets of the previously described sheet prism. The image formed with two sheet prisms can have lower distortion. In yet another embodiment, the fingerprint sensing system is incorporated into a flat-profile package using mirrors to fold radiation and to compress the height of the package.

    摘要翻译: 在一个实施例中,指纹感测系统包括具有感测表面的片状棱镜和与感测表面相对定位的多个棱镜。 每个棱镜具有入射表面和出射表面,并且与另一棱镜相邻。 片材的宽度是任何一个棱镜的最大厚度的十倍以上。 当手指位于感测表面上时,进入多个入射表面并入射到感测表面的辐射的一部分通过全内反射被反射。 反射的辐射从多个出射表面发射以产生指纹的图像。 在另一个实施例中,系统还包括与先前描述的片状棱镜堆叠在一起的第二片状棱镜。 第二片棱镜具有与前述片状棱镜的棱镜相对的与平坦表面相对的平坦表面和多个棱镜。 用两片棱镜形成的图像可以具有较低的变形。 在另一个实施例中,指纹感测系统使用镜子结合到平坦轮廓包中以折叠辐射并压缩包装的高度。

    Methods and apparatus for gesture recognition based on templates
    8.
    发明授权
    Methods and apparatus for gesture recognition based on templates 失效
    基于模板的手势识别方法和装置

    公开(公告)号:US6075895A

    公开(公告)日:2000-06-13

    申请号:US879854

    申请日:1997-06-20

    摘要: An apparatus and a method for recognizing the gesture of the image of a player by identifying a gesture from a set of specific pre-defined gestures. In one embodiment, the method includes the steps of retrieving a background image that does not include the player's image, and a current image that includes the player's image and at least a portion of the background image. Then the method removes at least a portion of the background image from the current image to generate the player's image, which is mapped directly to a number of templates to generate a number of template outputs. Finally, the method analyzes the template outputs to identify the specific pre-defined gesture that corresponds to the gesture in the image.

    摘要翻译: 一种用于通过从一组特定预定义手势中识别手势来识别玩家的图像的手势的装置和方法。 在一个实施例中,该方法包括检索不包括播放器图像的背景图像以及包括播放器图像和背景图像的至少一部分的当前图像的步骤。 然后,该方法从当前图像中去除背景图像的至少一部分,以产生播放器的图像,其直接映射到多个模板以生成多个模板输出。 最后,该方法分析模板输出以识别与图像中的手势相对应的特定预定义手势。

    Selecting sectors in a storage medium
    9.
    发明授权
    Selecting sectors in a storage medium 失效
    选择存储介质中的扇区

    公开(公告)号:US5448550A

    公开(公告)日:1995-09-05

    申请号:US79084

    申请日:1993-06-16

    申请人: Fai Mok Jeff Yu

    发明人: Fai Mok Jeff Yu

    摘要: Selecting different sectors in a storage medium using switches on the storage medium, instead of programming the instrument reading the storage medium. Each switch has a switching material. The switching material can be located at more than one interchangeable position. The position determines the priority of its corresponding sector as compared to other sectors. The location of the switching material is determined electronically. Switching materials suitable for the present invention include a reflective material, an opaque material, a reflective concave material, a convex lens, a prism, a set of lines, a magnetic material and a flexible reflective membrane.

    摘要翻译: 使用存储介质上的开关选择存储介质中的不同扇区,而不是对读取存储介质的仪器进行编程。 每个开关都有开关材料。 开关材料可以位于多个可互换位置。 与其他部门相比,该职位确定了其对应部门的优先级。 开关材料的位置由电子确定。 适用于本发明的开关材料包括反射材料,不透明材料,反射凹形材料,凸透镜,棱镜,一组线,磁性材料和柔性反射膜。