Bar code incorporated into holographic display
    43.
    发明授权
    Bar code incorporated into holographic display 失效
    条形码整合到全息显示器中

    公开(公告)号:US5422744A

    公开(公告)日:1995-06-06

    申请号:US897772

    申请日:1992-06-12

    摘要: In order to improve security for holographic labels which are positioned on a substrate base, a bar code symbol with regions of different light reflective properties is holographically recorded on the base. The base may be, for example an information card, such as a credit card, a label, or a container for a product. The bar code symbol can be recorded so that it is visible to the eye in white light (e.g., as a rainbow hologram) or so that it requires an appropriate reference beam for reconstruction. A reading apparatus (e.g., a bar code reader) directs light at the holographic bar code symbol and detects the reflected optical information with a detector such as a CCD array. The reading apparatus can be a stand-alone device or, in the case of a credit card, can be incorporated into a conventional swiper for reading magnetic information on a strip on the card. A non-holographic bar code symbol can also be provided on or near a holographic display element, e.g., a rainbow hologram. The bar code can be positioned adjacent the display, or placed in a window within the display, or etched or embossed on the display. A system is also provided for authenticating a holographic display on an information card such as a credit card. A display is illuminated and a reflected beam directed at a holographic record which was previously produced from a signal, known to be authentic, and a reference. The reflected beam is used to reconstruct a reference beam. A sensor receives the reconstructed reference and it is then determined if the display is authentic.

    摘要翻译: 为了提高位于基板基板上的全息标签的安全性,具有不同光反射特性的区域的条形码符号全息地记录在基座上。 基座可以是例如用于产品的信息卡,例如信用卡,标签或容器。 可以记录条形码符号,使得其在白光(例如,作为彩虹全息图)中可见于眼睛,或者使得其需要用于重建的适当的参考光束。 读取装置(例如,条形码阅读器)将光引导到全息条形码符号,并用诸如CCD阵列的检测器检测反射的光学信息。 读取装置可以是独立装置,或者在信用卡的情况下,可以并入到用于读取卡上的条带上的磁信息的常规的卡片中。 也可以在全息显示元件上或附近提供非全息条形码符号,例如彩虹全息图。 条形码可以定位在显示器附近,或者放置在显示器内的窗口中,或者蚀刻或压印在显示器上。 还提供了一种用于在诸如信用卡的信息卡上认证全息显示的系统。 照明的显示器和指向全息记录的反射光束,其先前由已知是真实的信号产生,并且是参考。 反射光束用于重构参考光束。 传感器接收重建的参考,然后确定显示器是否可信。

    Method and apparatus for reading two-dimensional bar code employing
bit-mapped imaging
    44.
    发明授权
    Method and apparatus for reading two-dimensional bar code employing bit-mapped imaging 失效
    使用位图成像读取二维条形码的方法和装置

    公开(公告)号:US5414250A

    公开(公告)日:1995-05-09

    申请号:US794

    申请日:1993-01-04

    IPC分类号: G06K7/10 G06K19/06

    摘要: An apparatus and method for reading data in the form of indicia on a surface of a target, the indicia having a preferred reading direction, including a light source for illuminating a portion of the surface to be read with a laser beam in a scanning pattern at a predetermined scanning angle so as to scan spatially adjacent portions of the surface. A detector and a processor is provided that is operative for detecting at least a portion of the light reflected from the indicia and storing representations thereof, and further determining the angular difference between the preferred reading direction and the scanning angle.

    摘要翻译: 一种用于以目标表面上的标记形式读取数据的装置和方法,所述标记具有优选的读取方向,包括用于以扫描模式用激光束照射要读取的表面的一部分的光源 以预定的扫描角度扫描表面的空间相邻部分。 提供检测器和处理器,其用于检测从标记反射的光的至少一部分并存储其表示,并进一步确定优选读取方向与扫描角之间的角度差。

    Mirrorless ring mounted miniature optical scanner
    45.
    发明授权
    Mirrorless ring mounted miniature optical scanner 失效
    无镜环安装微型光学扫描仪

    公开(公告)号:US5410140A

    公开(公告)日:1995-04-25

    申请号:US246382

    申请日:1994-05-20

    摘要: To reduce the size and weight of an optical scanner, the present invention provides a mirrorless beam scanning unit wherein the light emitter itself moves back and forth. In the preferred embodiments the light emitter is a visible light diode (VLD) mounted on the axis of a rotatable shaft. The VLD emits light in a direction perpendicular to the axis of the shaft. A lever arm attached to the shaft and an induction motor for moving the arm repeatedly rotate the shaft back and forth through a small rotational arc. The mirrorless scanner is mounted on a finger sized ring. This allows a user to wear the miniature optical scanner on a finger. A separate unit houses the other components of the scanning system, such as the analog signal processing circuitry, digitizer, decoder and any necessary interface to a data processing system. The separate unit can be worn on the user's belt or in a pocket, and a cable connects the separate unit to the ring mounted scanner.

    摘要翻译: 为了减小光学扫描仪的尺寸和重量,本发明提供了一种无反射镜束扫描单元,其中光发射器本身前后移动。 在优选实施例中,光发射器是安装在可旋转轴的轴线上的可见光二极管(VLD)。 VLD在与轴的轴线垂直的方向上发光。 连接到轴的杠杆臂和用于移动臂的感应电动机通过小的旋转电弧反复地使轴旋转。 无反射镜扫描仪安装在手指大小的环上。 这允许用户将微型光学扫描仪戴在手指上。 单独的单元容纳扫描系统的其他组件,例如模拟信号处理电路,数字转换器,解码器以及与数据处理系统的任何必要接口。 单独的单元可以佩戴在用户的皮带上或口袋中,并且电缆将单独的单元连接到环形安装的扫描仪。

    Laser diode scanner with enhanced visibility at an aiming distance
relative to the reading distance
    47.
    发明授权
    Laser diode scanner with enhanced visibility at an aiming distance relative to the reading distance 失效
    激光二极管扫描仪在相对于读取距离的瞄准距离处具有增强的可见性

    公开(公告)号:US5304788A

    公开(公告)日:1994-04-19

    申请号:US865728

    申请日:1992-04-09

    IPC分类号: G06K7/10

    摘要: The visibility of a laser beam emitted by a laser diode in a scanner is enhanced to facilitate aiming the laser beam at a symbol to be read. An aperture stop in an optical train has an increased dimension along a non-scan direction. The magnification of a focusing lens in the optical train is increased. Laser diode astigmatism is affirmatively used to enhance visibility. What results is an aiming spot (or aiming scan line) at a farther plane (d6) that is more visible to the user than the scanning spot at a closer plane (d3), at which closer plane the scanner is able to read a bar code.

    摘要翻译: 激光二极管在扫描仪中发射的激光束的可见度增强,以便于将激光束瞄准要读取的符号。 光学列车中的孔径光阑沿着非扫描方向具有增加的尺寸。 光学系列中的聚焦透镜的放大率增加。 激光二极管散光被肯定地用于提高可视性。 在距离更靠近的平面(d3)的扫描点更为可见的目标点(或瞄准扫描线)的结果是比扫描仪更靠近平面(d3),扫描仪能够读取条 码。

    Laser scanner for reading two dimensional bar codes
    49.
    发明授权
    Laser scanner for reading two dimensional bar codes 失效
    用于读取二维条形码的激光扫描仪

    公开(公告)号:US5637851A

    公开(公告)日:1997-06-10

    申请号:US388480

    申请日:1995-02-14

    IPC分类号: G06K7/10 G06K19/06

    摘要: An apparatus and method for reading data in the form of indicia on a surface of a target, the indicia having a preferred reading direction, including a light source for illuminating a portion of the surface to be read with a laser beam in a scanning pattern at a predetermined scanning angle so as to scan spatially adjacent portions of the surface. A detector and a processor is provided that is operative for detecting at least a portion of the light reflected from the indicia and storing representations thereof, and further determining the angular difference between the preferred reading direction and the scanning angle. An optical component disposed adjacent the light source is provided for optically directing the laser beam along a path toward the surface and is capable of controlling and setting the predetermined scanning angle. Furthermore, the optical component may be automatically rotated so as to align the direction of scan with the preferred reading direction of the indicia.

    摘要翻译: 一种用于以目标表面上的标记形式读取数据的装置和方法,所述标记具有优选的读取方向,包括用于以扫描模式用激光束照射要读取的表面的一部分的光源 以预定的扫描角度扫描表面的空间相邻部分。 提供检测器和处理器,其用于检测从标记反射的光的至少一部分并存储其表示,并进一步确定优选读取方向与扫描角之间的角度差。 设置在光源附近设置的光学部件用于沿着朝向表面的路径光学地引导激光束并且能够控制和设定预定的扫描角度。 此外,可以自动旋转光学部件,以便将扫描方向与标记的优选读取方向对齐。