Apparatus and method for reading indicia using charge coupled device and scanning laser beam technology
    21.
    发明授权
    Apparatus and method for reading indicia using charge coupled device and scanning laser beam technology 失效
    使用电荷耦合器件和扫描激光束技术读取标记的装置和方法

    公开(公告)号:US06398112B1

    公开(公告)日:2002-06-04

    申请号:US09540404

    申请日:2000-03-31

    IPC分类号: G06K710

    摘要: A scanning device for reading indicia of differing light reflectivity, including bar code or matrix array symbols, has a single light emitter, such as a laser or light emitting diode, for generating a scanning light beam to visually illuminate sequential portions of the indicia. A sensor, such as a charge coupled or other solid state imaging device, simultaneously detects light reflected from portions of the indicia and generates an electrical signal representative of the spacial intensity variations the portions of the indicia. The scanning device may also include an ambient light sensor, and a second light emitter for use only in aiming or orienting the scanning device. A photodetector may also be provided to separately detect one symbol virtually simultaneous with the detection of another symbol by the sensor or to provide dual modalities. A method for reading indicia is also provided.

    摘要翻译: 用于读取不同光反射率的标记(包括条形码或矩阵阵列符号)的扫描装置具有用于产生扫描光束以目视照亮标记的顺序部分的单个光发射器,例如激光或发光二极管。 诸如电荷耦合或其它固态成像装置的传感器同时检测从标记的部分反射的光,并产生代表标记部分的空间强度变化的电信号。 扫描装置还可以包括环境光传感器和仅用于瞄准或定向扫描装置的第二光发射器。 还可以提供光电检测器以与传感器检测另一个符号同时检测一个符号,或提供双重方式。 还提供了读取标记的方法。

    Bar code scanner utilizing multiple light beams output by a light beam splitter
    22.
    发明授权
    Bar code scanner utilizing multiple light beams output by a light beam splitter 有权
    条形码扫描器利用由光束分离器输出的多个光束

    公开(公告)号:US06247648B1

    公开(公告)日:2001-06-19

    申请号:US09301633

    申请日:1999-04-29

    IPC分类号: G06K710

    CPC分类号: G06K7/10831

    摘要: A bar code scanner and method for scanning a bar code symbol that splits a light beam using a liquid crystal device and directs the split light beams toward a bar code symbol using a moveable mirror. The light reflected by the symbol from each of the split light beams is summed and converted to an electrical signal indicative of the bar code symbol. The electrical signal is processed to decode the bar code symbol, but, if decoding is unsuccessful, the liquid crystal device is changed to affect the number of split light beams incident on the bar code symbol.

    摘要翻译: 一种条形码扫描器和方法,用于扫描使用液晶装置分割光束的条形码符号,并使用可移动反射镜将分束光束引向条形码符号。 从每个分束光束的符号反射的光被相加并转换成指示条形码符号的电信号。 处理电信号以解码条形码符号,但是如果解码不成功,则改变液晶装置以影响入射在条形码符号上的分束光束的数量。

    Compact bar code scanner with scan mirror jointly movable with drive
component
    24.
    发明授权
    Compact bar code scanner with scan mirror jointly movable with drive component 失效
    紧凑型条码扫描器,扫描镜可与驱动部件共同移动

    公开(公告)号:US6142379A

    公开(公告)日:2000-11-07

    申请号:US407191

    申请日:1999-09-28

    IPC分类号: G06K7/10 G06F1/16 G06F3/033

    摘要: Several different embodiments are disclosed of a simple, compact bar code scanner which is capable of scanning in any one of several modes, a linear scan mode for scans along a single axis, an omnidirectional scan mode for scans with consecutive scan lines which are angularly displaced relative to each other, or a raster scan mode for scans with consecutive scan lines along a first scan axis which are displaced relative to each other along a second perpendicular axis. In a preferred embodiment, the compact bar code scanner is used in a small housing mounted on an index finger of an operator such that the natural pointing direction of the index finger aims the scanner. In one embodiment, a high frequency flexural member, with a scanning mirror and permanent magnet mounted thereon, is supported by a low frequency flexural member. An x drive coil is positioned by the permanent magnet, and with an applied high frequency x drive signal, causes the high frequency flexural member, with the permanent magnet means and scanning mirror mounted thereon, to torsionally oscillate at the frequency of the x drive signal. A y drive coil is also positioned by the permanent magnet, and with an applied low frequency y drive signal, causes the low frequency flexural member to oscillate to cause low frequency y scanning of the scanning mirror, thereby resulting in a raster scan pattern. With an applied high frequency y drive signal, the y coil causes the high frequency flexural member to oscillate at a high frequency to cause high frequency y scanning of the mirror, thereby resulting in an omnidirectional scan patterns.

    摘要翻译: 公开了一种简单,紧凑的条形码扫描器的几个不同实施例,该扫描器能够以多种模式中的任何一种扫描,用于沿着单个轴进行扫描的线性扫描模式,用于扫描的全向扫描模式,其中连续的扫描线被角位移 或者用于沿着沿第一垂直轴相对于彼此移位的沿着第一扫描轴的连续扫描线进行扫描的光栅扫描模式。 在优选实施例中,紧凑型条形码扫描器用于安装在操作者的食指上的小壳体中,使得食指的自然指向方向瞄准扫描仪。 在一个实施例中,具有安装在其上的扫描镜和永磁体的高频弯曲构件由低频弯曲构件支撑。 x驱动线圈由永磁体定位,并且施加的高频x驱动信号使得安装有永久磁铁装置和扫描反射镜的高频弯曲部件以x驱动信号的频率扭转振荡 。 y驱动线圈也由永磁体定位,并且施加的低频y驱动信号使得低频弯曲构件振荡以引起扫描反射镜的低频y扫描,从而导致光栅扫描图案。 利用施加的高频y驱动信号,y线圈使得高频弯曲构件以高频振荡,从而导致反射镜的高频y扫描,从而导致全向扫描图案。

    Down-loadable hand-held optical reader
    25.
    发明授权
    Down-loadable hand-held optical reader 失效
    可下载的手持式光学读卡器

    公开(公告)号:US6119944A

    公开(公告)日:2000-09-19

    申请号:US794782

    申请日:1997-02-03

    摘要: A hand-held bar code reader, in particular a bar code wand is used by a consumer to read bar code information accompanying a product displayed at a retail outlet. The bar code information can be presented in, for example, UPC format and carries information relating to the products. The consumer subsequently down-loads information stored in the reader via a suitable interface to a personal computer which accesses information identified by a address included in or comprising the bar code information. The site contains additional information such as price information concerning the advertised product and the consumer may be able to pay for and order the product directly via the site. As a result the consumer has a simple reminder of the product, is able to obtain additional information concerning the product with minimum difficulty and can obtain the product itself with maximum ease.

    摘要翻译: 消费者使用手提式条形码读取器,特别是条形码棒来读取伴随着在零售店显示的产品的条形码信息。 条形码信息可以例如以UPC格式呈现,并且携带与产品相关的信息。 消费者随后通过适当的接口将存储在读取器中的信息下载到个人计算机,该个人计算机访问由包括在或包括条形码信息的地址所标识的信息。 该网站包含有关广告产品的价格信息等附加信息,消费者可能会直接通过网站支付和订购产品。 因此,消费者对产品有一个简单的提醒,能够以最小的难度获得有关该产品的附加信息,并且可以最大限度地获得产品本身。

    Bar code scanner having a focusing system
    26.
    发明授权
    Bar code scanner having a focusing system 有权
    具有聚焦系统的条形码扫描器

    公开(公告)号:US6065678A

    公开(公告)日:2000-05-23

    申请号:US192032

    申请日:1998-11-13

    申请人: Yajun Li Joseph Katz

    发明人: Yajun Li Joseph Katz

    IPC分类号: G06K7/10

    CPC分类号: G06K7/10742 G06K7/10732

    摘要: A CCD based bar code scanner having a focusing system for assisting an operator in determining a proper relative position between the scanner and the bar code. The scanner also includes an illumination system for illuminating the bar code, a collection system for detecting the light reflected from the illuminated bar code and a processor for processing the detected signals.

    摘要翻译: 一种基于CCD的条形码扫描器,其具有用于辅助操作者确定扫描器和条形码之间的适当相对位置的聚焦系统。 扫描仪还包括用于照亮条形码的照明系统,用于检测从照明条形码反射的光的收集系统和用于处理检测到的信号的处理器。

    Optical scanner with extended depth of focus
    28.
    发明授权
    Optical scanner with extended depth of focus 失效
    光学扫描仪具有较长的焦距

    公开(公告)号:US5814827A

    公开(公告)日:1998-09-29

    申请号:US850967

    申请日:1997-05-05

    申请人: Joseph Katz

    发明人: Joseph Katz

    IPC分类号: G06K5/00

    CPC分类号: G06K7/10722 G06K7/10811

    摘要: A scanner with an extended depth of focus for electro-optically reading indicia having parts of different light reflectivity, comprises a collection optical system for collecting radiation reflected from objects in the field of view along plural different optical axes and an optical detector for detecting radiation collected by the collection optical system along each of the plural different optical axes and for generating electrical output signals indicative thereof. The scanner further includes processing circuitry for processing the output signals of the optical detector by comparing the output signals of the optical detector with one another, a memory for storing the detector output signals and further processing circuitry receiving the stored output signals of the optical detector from the memory and selectively outputting one of the received signals to a decoder.

    摘要翻译: 具有用于具有不同光反射率的部分的电光读取标记的具有扩展的焦点深度的扫描仪包括用于收集沿着多个不同光轴在视场中从物体反射的辐射的收集光学系统和用于检测收集的辐射的光学检测器 通过沿着多个不同光轴中的每一个的收集光学系统并且用于产生指示其的电输出信号。 扫描器还包括处理电路,用于通过将光学检测器的输出信号彼此进行比较来处理光学检测器的输出信号;存储器,用于存储检测器输出信号,以及进一步的处理电路,将光检测器的存储的输出信号从 存储器并且将所接收的信号中的一个选择性地输出到解码器。

    Barcode scanner using an array of light emitting elements which are
selectively activated
    30.
    发明授权
    Barcode scanner using an array of light emitting elements which are selectively activated 失效
    条形码扫描器,其使用选择性地激活的发光元件阵列

    公开(公告)号:US5545886A

    公开(公告)日:1996-08-13

    申请号:US98991

    申请日:1993-07-29

    IPC分类号: G06K7/10 G06K7/14

    摘要: A bar code scanner employs an electronic means for causing the light beam to scan a bar code symbol, rather than using a mechanical device to generate the scan. A linear array of light sources, activated one at a time in a regular sequence, may be imaged upon the bar code symbol to simulate a scanned beam. Instead of a single linear array of light sources, a multiple-line array may be employed, producing multiple scan lines. The multiple scan lines may be activated in sequence, or activated simultaneously (time-division or frequency-division multiplexed. The multiple scan lines can provide signal enhancement, noise reduction or fault correction if directed to the same bar code pattern. Multiple scan lines may be generated using a single light source and a beam splitter, with mechanical scanning, as well as by the sequentially-activated light sources. Multiple simultaneous scan lines may be employed to generate a raster scan at lower mechanical scan frequency. In another embodiment, a tunable laser may be employed to provide a scan without moving parts; a laser beam from the tunable laser is reflected from a diffraction grating that produces an angular deviation dependent upon the wavelength of the laser output. As the frequency of the tunable laser is varied in some selected pattern, the laser beam will scan accordingly.

    摘要翻译: 条形码扫描仪采用电子装置,用于使光束扫描条形码符号,而不是使用机械装置来产生扫描。 可以在条形码符号上成像一个以规则顺序一次激活的光源的线性阵列,以模拟扫描光束。 代替光源的单个线性阵列,可以采用多行阵列,产生多条扫描线。 多个扫描线可以被顺序激活或同时激活(时分或频分复用,多个扫描线可以提供信号增强,降噪或故障校正,如果指向相同的条形码图案,多个扫描线可以 使用单个光源和分束器,通过机械扫描以及由顺序激活的光源产生多个同时扫描线可以以较低的机械扫描频率产生光栅扫描,在另一个实施例中, 可调谐激光器可用于提供无移动部件的扫描;来自可调谐激光器的激光束从衍射光栅反射,该衍射光栅产生取决于激光输出波长的角度偏差,因为可调激光器的频率在 一些选定的图案,激光束将相应扫描。