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    • 24. 发明授权
    • Bar code incorporated into holographic display
    • 条形码整合到全息显示器中
    • US5422744A
    • 1995-06-06
    • US897772
    • 1992-06-12
    • Joseph KatzEmanuel MaromBoris MetlitskyJerome SwartzYnjiun Wang
    • Joseph KatzEmanuel MaromBoris MetlitskyJerome SwartzYnjiun Wang
    • G03H1/04G03H1/22G06K7/08G06K19/06G06K19/08G06K19/16G06K19/18G03H1/00G06K7/10
    • G06K19/18G03H1/041G03H1/22G06K19/06046G06K19/08G06K19/16G03H2001/0066G03H2210/20
    • 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.
    • 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。
    • 27. 发明授权
    • Wand readers
    • 魔杖读者
    • US5352922A
    • 1994-10-04
    • US109021
    • 1993-08-19
    • Edward BarkanDavid P. GorenJoseph KatzYajun LiJerome SwartzThomas Mazz
    • Edward BarkanDavid P. GorenJoseph KatzYajun LiJerome SwartzThomas Mazz
    • G06K7/015G06K7/10G06K7/14H01L31/06
    • G06K7/10881G06K7/10623G06K7/10801G06K7/14
    • The method and apparatus of this invention facilitate operation of a bar code reader over a wider range of working angle and for a wider range of bar code densities. The invention includes improved optics and sensing elements. The optics and sensing elements and/or the associated circuitry are arranged to provide two channels of data derived form the scanned bar code. The two channels have differing resolutions. Analysis of the data from the two channels provides a single decoded result. As the working angle and density vary at least one of the resolutions will be appropriate for sensing all or most of the bar coded data. The data from the channel producing a valid result can be used, or if neither channel produces a valid result by itself, data from each channel can be analyzed and valid portions of the data from both channels combined to produce the single decoded result.
    • 本发明的方法和装置便于在更宽范围的工作角度和更宽范围的条形码密度下操作条形码阅读器。 本发明包括改进的光学和感测元件。 光学和感测元件和/或相关联的电路被布置成提供从扫描的条形码导出的两个数据通道。 两个通道具有不同的分辨率。 来自两个通道的数据的分析提供单个解码结果。 由于工作角和密度变化,分辨率中的至少一个将适合于感测所有或大部分条形码数据。 可以使用来自产生有效结果的信道的数据,或者如果两个信道本身都没有产生有效结果,则可以分析来自每个信道的数据,并且将来自两个信道的数据的有效部分组合以产生单个解码结果。
    • 28. 发明授权
    • Multi-resolution bar code reader
    • 多分辨率条码阅读器
    • US5278397A
    • 1994-01-11
    • US735573
    • 1991-07-25
    • Edward BarkanDavid P. GorenJoseph KatzYajun LiJerome SwartzThomas Mazz
    • Edward BarkanDavid P. GorenJoseph KatzYajun LiJerome SwartzThomas Mazz
    • G06K7/015G06K7/10G06K7/14
    • G06K7/10881G06K7/10623G06K7/10801G06K7/14
    • The method and apparatus of this invention facilitate operation of a bar code reader over a wider range of working angle and for a wider range of bar code densities. The invention includes improved optics and sensing elements. The optics and sensing elements and/or the associated circuitry are arranged to provide two channels of data derived form the scanned bar code. The two channels have differing resolutions. Analysis of the data from the two channels provides a single decoded result. As the working angle and density vary at least one of the resolutions will be appropriate for sensing all or most of the bar coded data. The data from the channel producing a valid result can be used, or if neither channel produces a valid result by itself, data from each channel can be analyzed and valid portions of the data from both channels combined to produce the single decoded result.
    • 本发明的方法和装置便于在更宽范围的工作角度和更宽范围的条形码密度下操作条形码阅读器。 本发明包括改进的光学和感测元件。 光学和感测元件和/或相关联的电路被布置成提供从扫描的条形码导出的两个数据通道。 两个通道具有不同的分辨率。 来自两个通道的数据的分析提供单个解码结果。 由于工作角和密度变化,分辨率中的至少一个将适合于感测所有或大部分条形码数据。 可以使用来自产生有效结果的信道的数据,或者如果两个信道本身都没有产生有效结果,则可以分析来自每个信道的数据,并且将来自两个信道的数据的有效部分组合以产生单个解码结果。