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22 条记录 (耗时 0.011 秒)

    Light emitting diode scanner
    3.
    发明公开
    Light emitting diode scanner 失效
    发光二极管扫描仪

    公开(公告)号：EP0469305A3

    公开(公告)日：1992-09-02

    申请号：EP91110750.6

    申请日：1991-06-28

    申请人： SYMBOL TECHNOLOGIES, INC.

    发明人： Metlitsky, Boris ,  Swartz, Jerome ,  Barkan, Edward ,  Shepard, Howard M. ,  Goren, David ,  Biuso, Tony

    IPC分类号： G06K7/10

    CPC分类号： G06K7/10881 ,  G06K2207/1013

    摘要： A portable scanning head emits and receives light from a light-emitting diode to read symbols, such as bar-code symbols. The optics within the scanner are operative for focusing a light beam and the view of a light sensor in different planes exteriorly of a scanner housing. Imaging means are provided in the unit for imaging a viewing window. The viewing window has an area smaller than that of the scan spot. The system can employ an LED as a light source and tolerate the relatively large-sized (on the order of millimeters) scan spot without sacrificing reading performance since the photodiode "sees" only that portion of the scan spot visible through the viewing window.

    Optical scanner
    4.
    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
    7.
    发明公开
    Optical scanner 失效
    光学扫描器

    公开(公告)号：EP1445725A3

    公开(公告)日：2005-08-24

    申请号：EP04075636.3

    申请日：1996-05-31

    申请人： SYMBOL TECHNOLOGIES, INC.

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

    IPC分类号： G06K7/10 ,  G06K7/14

    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.

    Digitizer for bar code reader
    8.
    发明公开
    Digitizer for bar code reader 失效
    数字转换器，条形码阅读器。

    公开(公告)号：EP0653721A2

    公开(公告)日：1995-05-17

    申请号：EP94117865.9

    申请日：1994-11-11

    申请人： SYMBOL TECHNOLOGIES, INC.

    发明人： Bridgelall, Raj ,  Goren, David

    IPC分类号： G06K7/10

    CPC分类号： G06K7/10851

    摘要： A multi-bit digitizer (30) for a barcode reader detects the presence of edges of a scanned barcode symbol, and also measures the strength of each detected edge. A polarity or edge direction signal (8) indicates the direction of each detected edge, and a timing signal (6) is representative of the timing and also, by means of a variable pulse width, the strength of each edge. A gating signal (200) indicates that the data are unreliable and invalid if the measured voltage applied to the scanner motor of the barcode reader is higher or lower than defined limit values. Any scans made at a speed which were too high or too low are rejected.

    Optical readers
    9.
    发明公开
    Optical readers 失效
    光学阅读器

    公开(公告)号：EP0573018A3

    公开(公告)日：1994-06-01

    申请号：EP93108880.1

    申请日：1993-06-02

    申请人： SYMBOL TECHNOLOGIES, INC.

    发明人： Dvorkis, Paul ,  Thomas, Ralph ,  Goren, David ,  Fuller, Robert ,  Goldner, Leonard H.

    IPC分类号： G06K7/10

    CPC分类号： G06K7/10881 ,  G06F3/03543 ,  G06F3/03545

    摘要： To read optically encoded information over a wide range of densities, the present invention provides a spacer system on the tip of an optical reader. The optical reader may be a contact wand type device, for example including a fixed laser emitter. Alternatively, the optical reader may be a moving spot scanner. In either case, the emitter element of the optical reader produces a diverging beam of light. During a reading operation, the spacer contacts the object surface on which optically encoded indicia is formed. The spacer selectively defines at least two different distances between the light emitter, or the focal point of the emitted beam of light, and the object surface. Because of the beam divergence, the diameter of the beam at its point of impact on the object surface will be different for each of the two different distances. The different beam diameters provide the optical reader with different effective sensing spots for reading different density symbols. The present invention also incorporates an optical reader, typically a moving spot laser scanner, into a number of different types of computer data input devices, such as the stylus of a digitizer table and a computer "mouse." In one such integrated terminal embodiment, the optical reader is combined with a touch sensitive display and data input device.

    Optical readers
    10.
    发明公开
    Optical readers 失效
    Optischer Leser。

    公开(公告)号：EP0573018A2

    公开(公告)日：1993-12-08

    申请号：EP93108880.1

    申请日：1993-06-02

    申请人： SYMBOL TECHNOLOGIES, INC.

    发明人： Dvorkis, Paul ,  Thomas, Ralph ,  Goren, David ,  Fuller, Robert ,  Goldner, Leonard H.

    IPC分类号： G06K7/10

    CPC分类号： G06K7/10881 ,  G06F3/03543 ,  G06F3/03545

    摘要： To read optically encoded information over a wide range of densities, the present invention provides a spacer system on the tip of an optical reader. The optical reader may be a contact wand type device, for example including a fixed laser emitter. Alternatively, the optical reader may be a moving spot scanner. In either case, the emitter element of the optical reader produces a diverging beam of light. During a reading operation, the spacer contacts the object surface on which optically encoded indicia is formed. The spacer selectively defines at least two different distances between the light emitter, or the focal point of the emitted beam of light, and the object surface. Because of the beam divergence, the diameter of the beam at its point of impact on the object surface will be different for each of the two different distances. The different beam diameters provide the optical reader with different effective sensing spots for reading different density symbols. The present invention also incorporates an optical reader, typically a moving spot laser scanner, into a number of different types of computer data input devices, such as the stylus of a digitizer table and a computer "mouse." In one such integrated terminal embodiment, the optical reader is combined with a touch sensitive display and data input device.

    摘要翻译： 为了在宽范围的密度上读取光学编码的信息，本发明提供了在光学读取器的尖端上的间隔器系统。 光学读取器可以是接触棒式器件，例如包括固定的激光发射器。 或者，光学读取器可以是移动点扫描器。 在任一种情况下，光学读取器的发射器元件产生发散的光束。 在读取操作期间，间隔物接触其上形成有光学编码标记的物体表面。 间隔物选择性地限定光发射器或发射光束的焦点与物体表面之间的至少两个不同的距离。 由于光束发散，在两个不同距离的每一个上，其在物体表面上的撞击点处的光束直径将是不同的。 不同的光束直径为光学读取器提供了用于读取不同密度符号的不同有效感测点。 本发明还将光学读取器（通常为移动点激光扫描器）并入多个不同类型的计算机数据输入设备，诸如数字转换器表的触笔和计算机“鼠标”。 在一个这样的集成终端实施例中，光学读取器与触敏显示器和数据输入装置组合。