Machine readable record carrier with hologram
    3.
    发明授权
    Machine readable record carrier with hologram 失效
    具有全息图的机读记录载体

    公开(公告)号:US5900954A

    公开(公告)日:1999-05-04

    申请号:US484708

    申请日:1995-06-07

    摘要: A record carrier (e.g., an identification card) of the type containing machine-readable representations of data, wherein the record carrier comprises a substrate, a first pattern of machine-readable indicia applied to one surface of the substrate, and a hologram containing machine-readable data disposed on one surface of the substrate. The information represented by the machine-readable indicia and the machine-readable data are related to one another so as to enable a user to verify the authenticity of the record carrier by comparison of the indicia and the data.

    摘要翻译: 包含机器可读表示数据的类型的记录载体(例如,识别卡),其中记录载体包括基底,应用于基底的一个表面的机器可读标记的第一图案,以及包含全息图的机器 可读的数据设置在基板的一个表面上。 由机器可读标记和机器可读数据表示的信息彼此相关,以便使用户能够通过比较标记和数据来验证记录载体的真实性。

    Optical scanners
    5.
    发明授权
    Optical scanners 失效
    光学扫描仪

    公开(公告)号:US06209788B1

    公开(公告)日:2001-04-03

    申请号:US09436468

    申请日:1999-11-08

    IPC分类号: G06K710

    摘要: An optical scanning system is provided for producing a signal representative of a spatial distribution of indicia having different degrees of reflectivity to light, such as a bar code (14). The system includes an optical scanner (12) for scanning beam of light over the spatial distribution of indicia (14) and for producing an electrical signal corresponding to changes in the degree of reflectivity of the indicia. A digitizer (20), responsive to detections in a predetermined characteristic of the produced electrical signal is provided. The digitizer (20) converts the detections into digital words, such digital signals having a plurality of bits. The digitizer includes a timing generation circuit (42) for producing a pulse in response to each one of the detections with a time duration representative of the degree of reflectivity of the indicia as the beam of light. A decoder converts the time duration of the pulse into the digital word having a plurality of bits. An enhancement filter (30) is also disclosed. The enhancement filter (30) modifies pulses produced by a differentiator circuit (24) used in the scanner. Such modification includes increasing the rise time, and peak level of, the pulses produced by the differentiator circuit (24).

    摘要翻译: 提供了一种光学扫描系统,用于产生表示具有不同光反射度的标记的空间分布的信号,例如条形码(14)。 该系统包括用于在标记(14)的空间分布上扫描光束并用于产生对应于标记的反射度的变化的电信号的光学扫描器(12)。 提供了响应于所产生的电信号的预定特性中的检测的数字转换器(20)。 数字转换器(20)将检测转换为数字字,这样的数字信号具有多个位。 数字转换器包括一个定时产生电路(42),用于响应于每个检测产生一个脉冲,时间间隔代表作为光束的标记的反射率。 解码器将脉冲的持续时间转换为具有多个位的数字字。 还公开了增强滤波器(30)。 增强滤波器(30)修改由扫描器中使用的微分电路(24)产生的脉冲。 这种修改包括增加由微分电路(24)产生的脉冲的上升时间和峰值电平。

    Bar code readers using surface emitting laser diode
    6.
    发明授权
    Bar code readers using surface emitting laser diode 失效
    条码阅读器采用表面发射激光二极管

    公开(公告)号:US6062476A

    公开(公告)日:2000-05-16

    申请号:US828275

    申请日:1997-03-21

    IPC分类号: G06K7/10 H01S5/183 H01S5/42

    摘要: A scanning device incorporates a vertical cavity surface emitting laser (VCSEL). The laser diode may be mounted directly on an Si substrate which is adapted for movement to produce a scan pattern. A collimating lens may be directly mounted on the emitting surface of the laser. A plurality of lasers may be mounted on the substrate and operated in sequence without movement of the substrate to produce the effect of a scan. The scanning device emits visible or invisible light towards a target such as a bar code and a detector (mounted on the same or an adjacent substrate) senses the light reflected by the target to produce data which is decoded for further processing. A VCSEL uses low current and emits light from a relatively large area so that a relatively large amount of light is emitted for relatively small heat generation.

    摘要翻译: 扫描装置包括垂直腔表面发射激光器(VCSEL)。 激光二极管可以直接安装在适于移动以产生扫描图案的Si衬底上。 准直透镜可以直接安装在激光器的发射表面上。 多个激光器可以安装在基板上并且依次操作,而不会移动基板以产生扫描的效果。 扫描装置朝向诸如条形码的目标物发射可见光或不可见光,并且检测器(安装在相同或相邻的基板上)感测由目标反射的光以产生被解码以供进一步处理的数据。 VCSEL使用低电流并从相对较大的区域发射光,以便相对较少量的光被发射用于较小的发热。

    Vehicle usage monitoring and recording system
    7.
    发明授权
    Vehicle usage monitoring and recording system 失效
    车辆使用监测和记录系统

    公开(公告)号:US4072850A

    公开(公告)日:1978-02-07

    申请号:US612195

    申请日:1975-09-10

    申请人: Daniel R. McGlynn

    发明人: Daniel R. McGlynn

    摘要: An arrangement for use in a vehicle, including a reading unit for reading information from a portable information-providing instrument; data input means in the vehicle for providing data input from a sensor in the vehicle; enabling means in the vehicle connectable with the reading unit or the data input unit for processing provided information of data input unit for processing provided information or data; and recording means in the vehicle connectable with the reading unit, the data input unit, and the enabling unit in the vehicle for recording at least a portion of the information or data so provided or processed on a portable record carrier.

    摘要翻译: 一种用于车辆的装置,包括用于从便携式信息提供装置读取信息的读取单元; 用于提供从车辆中的传感器输入的数据的车辆中的数据输入装置; 能够与读取单元或数据输入单元连接的车辆中的启动装置用于处理提供的信息或数据的数据输入单元的提供信息; 以及与车辆中的读取单元,数据输入单元和启用单元连接的车辆中的记录装置,用于记录在便携式记录载体上提供或处理的信息或数据的至少一部分。

    Light collection systems in electro-optical readers
    8.
    发明授权
    Light collection systems in electro-optical readers 有权
    光电读取器中的光采集系统

    公开(公告)号:US6145743A

    公开(公告)日:2000-11-14

    申请号:US270341

    申请日:1999-03-16

    IPC分类号: G06K7/10

    CPC分类号: G06K7/10742 G06K7/10702

    摘要: An optical scanner for reading indicia of variable light reflectivity, such as bar code symbols, having a light source for producing a light beam for scanning a target; a sensor for collecting the reflected light from the target; and various light collection systems, including a louver formed from an array of thin slats positioned adjacent to the sensor so that light directed along substantially only one angle reaches the sensor, as well as imaging/diffusing optical systems.

    摘要翻译: 一种用于读取可变光反射率的标记的光学扫描器,例如条形码符号,具有用于产生用于扫描目标的光束的光源; 用于收集来自目标的反射光的传感器; 以及各种光收集系统,包括由邻近传感器定位的薄板条阵列形成的百叶窗,使得基本上仅仅一个角度的光线到达传感器,以及成像/扩散光学系统。