利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

3 条记录 (耗时 0.016 秒)

    Optical scanner
    1.
    发明公开
    Optical scanner 失效
    光学扫描仪

    公开(公告)号：EP1443450A3

    公开(公告)日：2005-08-24

    申请号：EP04075635.5

    申请日：1996-05-31

    申请人： SYMBOL TECHNOLOGIES, INC.

    发明人： Goren, David ,  Bridgelall, Raj ,  Kuchenbrod, Harry ,  Serbin, Gary ,  Barkan, Edward ,  Shellhammer, Stephen ,  Pandolfo, Donna ,  Cipriani, Guy ,  Li, Yajun ,  Campanelli, Joseph ,  Katz, Joseph ,  McGlynn, Daniel

    IPC分类号： G06K7/10

    CPC分类号： G06K7/10851 ,  G06K7/10544 ,  G06K7/14 ,  G06K7/1452 ,  G06K7/1478

    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 invention further relates to a method of reading an indicia where the electrical signal representative of the indicia is selectively sampled, the samples being analyzed to establish whether they will represent true data or noise, and signal collection, processing and sampling is then adjusted allowing more aggressive decoding techniques to be used. In another aspect, a non-linear edge strength digitizer is employed capable of decoding both poorly printed and high density bar codes. A matched filter for bar code symbol signals is also proposed; as there is no inherent synchronisation in the bar code signals, a peak or edge detector is used to trigger the system. An automatic deblurring signal processor also proposed wherein a first derivative of an input bar code signal is compared against a threshold range and, if no match is found, then parameters of the processor system are varied to increase the likelihood of a comparison being successful.

    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反射率的标记的空间分布的信号，例如条形码（14）。 本发明还涉及一种读取标记的方法，其中选择性地采样代表标记的电信号，分析样本以确定它们是否代表真实的数据或噪声，然后调整信号收集，处理和采样以允许更多 积极的解码技术被使用。 另一方面，采用非线性边缘强度数字转换器，能够对差印刷和高密度条形码进行解码。 还提出了用于条形码符号信号的匹配滤波器; 由于在条码信号中没有固有的同步，所以使用峰值或边缘检测器来触发系统。 还提出了一种自动去模糊信号处理器，其中将输入条形码信号的一阶导数与阈值范围进行比较，并且如果未找到匹配，则改变处理器系统的参数以增加比较成功的可能性。

    Optical scanner
    3.
    发明公开
    Optical scanner 失效
    Optischer Barcode Abtaster

    公开(公告)号：EP1443450A2

    公开(公告)日：2004-08-04

    申请号：EP04075635.5

    申请日：1996-05-31

    申请人： SYMBOL TECHNOLOGIES, INC.

    发明人： Goren, David ,  Bridgelall, Raj ,  Kuchenbrod, Harry ,  Serbin, Gary ,  Barkan, Edward ,  Shellhammer, Stephen ,  Pandolfo, Donna ,  Cipriani, Guy ,  Li, Yajun ,  Campanelli, Joseph ,  Katz, Joseph ,  McGlynn, Daniel

    IPC分类号： G06K7/10

    CPC分类号： G06K7/10851 ,  G06K7/10544 ,  G06K7/14 ,  G06K7/1452 ,  G06K7/1478

    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 invention further relates to a method of reading an indicia where the electrical signal representative of the indicia is selectively sampled, the samples being analyzed to establish whether they will represent true data or noise, and signal collection, processing and sampling is then adjusted allowing more aggressive decoding techniques to be used. In another aspect, a non-linear edge strength digitizer is employed capable of decoding both poorly printed and high density bar codes. A matched filter for bar code symbol signals is also proposed; as there is no inherent synchronisation in the bar code signals, a peak or edge detector is used to trigger the system. An automatic deblurring signal processor also proposed wherein a first derivative of an input bar code signal is compared against a threshold range and, if no match is found, then parameters of the processor system are varied to increase the likelihood of a comparison being successful.

    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）。 本发明还涉及一种读取标记的方法，其中代表标记的电信号被选择性地采样，分析样本以确定它们是否将代表真实数据或噪声，信号采集，处理和采样是 然后进行调整，允许使用更积极的解码技术。 在另一方面，采用非线性边缘强度数字化仪能够解码打印不良和高密度条形码。 还提出了用于条码符号信号的匹配滤波器; 由于条形码信号中没有固有的同步，所以使用峰值或边缘检测器来触发系统。 还提出了一种自动去模糊信号处理器，其中将输入条形码信号的一阶导数与阈值范围进行比较，并且如果找不到匹配，则改变处理器系统的参数以增加比较成功的可能性。