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    Optical scanners and signal processors therefor
    5.
    发明授权
    Optical scanners and signal processors therefor 失效
    光学扫描仪和信号处理器

    公开(公告)号：US5734152A

    公开(公告)日：1998-03-31

    申请号：US454830

    申请日：1995-05-31

    申请人： David Goren ,  Stephen Shellhammer ,  Harry Kuchenbrod ,  Donna Pandolfo ,  Gary Serbin ,  Guy Cipriani ,  Edward Barkan

    发明人： David Goren ,  Stephen Shellhammer ,  Harry Kuchenbrod ,  Donna Pandolfo ,  Gary Serbin ,  Guy Cipriani ,  Edward Barkan

    IPC分类号： G06K7/10 ,  G06K7/14

    CPC分类号： G06K7/10851 ,  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. The system includes an optical scanner for scanning beam of light over the spatial distribution of indicia and for producing an electrical signal corresponding to changes in the degree of reflectivity of the indicia. A digitizer, responsive to detections in a predetermined characteristic of the produced electrical signal is provided. The digitizer converts the detections into digital words, such digital signals having a plurality of bits. The digitizer includes a timing generation circuit 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 is also disclosed. The enhancement filter modifies pulses produced by a differentiator circuit 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。 该系统包括用于在标记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。 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。 数字转换器将检测器转换为数字字，这样的数字信号具有多个位。 数字转换器包括定时产生电路，用于响应于每个检测产生脉冲，其中持续时间代表标记作为光束的反射度。 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。 增强滤波器修改由扫描器中使用的微分电路产生的脉冲。 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。

    System and method for establishing authenticated wireless connection between mobile unit and host
    6.
    发明申请
    System and method for establishing authenticated wireless connection between mobile unit and host 有权
    用于在移动单元和主机之间建立认证无线连接的系统和方法

    公开(公告)号：US20050015618A1

    公开(公告)日：2005-01-20

    申请号：US10600029

    申请日：2003-06-20

    申请人： Gary Schneider ,  Stephen Shellhammer

    发明人： Gary Schneider ,  Stephen Shellhammer

    IPC分类号： H04L9/00 ,  H04L12/56 ,  H04L29/06

    CPC分类号： H04W12/06 ,  H04W76/10 ,  H04W84/18

    摘要： Described is a method and system for establishing an authenticated wireless communication (e.g., using Bluetooth technology) between first and second mobile devices. The first device (e.g., a mobile barcode scanner) sends a signal to establish a wireless communication with the second device. The first device includes a data capturing arrangement (“DCA”) as an only input device interface with a user thereof. The second device initiates an authentication process by requesting the first device to obtain a PIN code from the user. Once the first device obtains the PIN code from the user via the DCA, a pairing process is performed to compare the PIN code to entries in a database of authorized PIN codes. When the pairing process has been successfully completed, a link key is generated to establish the authenticated wireless communication between the first and second devices.

    摘要翻译： 描述了用于在第一和第二移动设备之间建立经认证的无线通信（例如，使用蓝牙技术）的方法和系统。 第一设备（例如，移动条形码扫描器）发送信号以建立与第二设备的无线通信。 第一设备包括作为与用户的唯一输入设备接口的数据捕获布置（“DCA”）。 第二设备通过请求第一设备从用户获取PIN码来发起认证过程。 一旦第一设备经由DCA从用户获得PIN码，则执行配对处理以将PIN码与授权PIN码的数据库中的条目进行比较。 当配对过程成功完成时，生成链路密钥以在第一和第二设备之间建立认证的无线通信。

    Omnidirectional reading of two-dimensional bar code symbols
    7.
    发明授权
    Omnidirectional reading of two-dimensional bar code symbols 失效
    全方位阅读二维条码符号

    公开(公告)号：US6123262A

    公开(公告)日：2000-09-26

    申请号：US447779

    申请日：1999-11-23

    申请人： Stephen Shellhammer

    发明人： Stephen Shellhammer

    IPC分类号： G06K7/14 ,  G06K7/10

    CPC分类号： G06K7/1443 ,  G06K7/14 ,  G06K7/1456

    摘要： A method and apparatus for automatically aligning a field of view of a two-dimensional bar code symbol reading device with a randomly oriented two-dimensional bar code symbol, wherein the symbol comprises a unique locatable pattern of bars and spaces, located along at least one side of the two-dimensioanl bar code. The invention uses standard omnidirectional scanning pattern for reading one-dimensional bar codes to locate the unique pattern in bar code, and works on the bar code located anywhere in the scanner field of view. The invention determines the angle of rotation of the bar code and the spatial location of the bar code in the scanner's field of view.

    摘要翻译： 一种用于将二维条形码符号读取装置的视野自动对准随机取向的二维条形码符号的方法和装置，其中该符号包括沿着至少一个位置的条形和空间的唯一可定位模式 侧面的二维条形码。 本发明使用标准的全向扫描图案来读取一维条形码以在条形码中定位唯一的图案，并对位于扫描仪视场中任何地方的条形码进行工作。 本发明确定条形码的旋转角度和条形码在扫描仪视场中的空间位置。

    Optical scanners
    8.
    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

    申请人： Raj Bridgelall ,  Edward Barkan ,  Stephen Shellhammer ,  Joseph Campanelli ,  Joseph Katz ,  Yajun Li ,  Daniel R. McGlynn

    发明人： Raj Bridgelall ,  Edward Barkan ,  Stephen Shellhammer ,  Joseph Campanelli ,  Joseph Katz ,  Yajun Li ,  Daniel R. McGlynn

    IPC分类号： G06K710

    CPC分类号： G06K7/10851 ,  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 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。

    Interface between threshold processing digitizer for bar code reader
    9.
    发明授权
    Interface between threshold processing digitizer for bar code reader 失效
    门禁处理数字转换器之间的接口条形码阅读器

    公开(公告)号：US6082621A

    公开(公告)日：2000-07-04

    申请号：US335001

    申请日：1994-11-09

    申请人： Jane Chan ,  David Goren ,  Harry Kuchenbrod ,  Gary Serbin ,  Stephen Shellhammer ,  Glenn Spitz

    发明人： Jane Chan ,  David Goren ,  Harry Kuchenbrod ,  Gary Serbin ,  Stephen Shellhammer ,  Glenn Spitz

    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.

    摘要翻译： 用于条形码读取器的多位数字转换器（30）检测扫描的条形码符号的边缘的存在，并且还测量每个检测到的边缘的强度。 极性或边缘方向信号（8）指示每个检测到的边缘的方向，并且定时信号（6）代表定时，并且还通过可变脉冲宽度来表示每个边缘的强度。 门控信号（200）指示如果施加到条形码读取器的扫描仪电机的测量电压高于或低于定义的限制值，则数据不可靠和无效。 以太高或过低的速度进行的扫描都被拒绝。

    Omnidirectional reading of two-dimensional symbols
    10.
    发明授权
    Omnidirectional reading of two-dimensional symbols 失效
    全方位阅读二维符号

    公开(公告)号：US5988505A

    公开(公告)日：1999-11-23

    申请号：US868229

    申请日：1997-06-03

    申请人： Stephen Shellhammer

    发明人： Stephen Shellhammer

    IPC分类号： G06K7/14 ,  G06K7/10

    CPC分类号： G06K7/1443 ,  G06K7/14 ,  G06K7/1456

    摘要： A method and apparatus for automatically aligning a field of view of a two-dimensional bar code symbol reading device with a randomly oriented two-dimensional bar code symbol, wherein the symbol comprises a unique locatable pattern of bars and spaces, located along at least one side of the two-dimensioanl bar code. The invention uses standard omnidirectional scanning pattern for reading one-dimensional bar codes to locate the unique pattern in bar code, and works on the bar code located anywhere in the scanner field of view. The invention determines the angle of rotation of the bar code and the spatial location of the bar code in the scanner's field of view.

    摘要翻译： 一种用于将二维条形码符号读取装置的视野自动对准随机取向的二维条形码符号的方法和装置，其中该符号包括沿着至少一个位置的条形和空间的唯一可定位模式 侧面的二维条形码。 本发明使用标准的全向扫描图案来读取一维条形码以在条形码中定位唯一的图案，并对位于扫描仪视场中任何地方的条形码进行工作。 本发明确定条形码的旋转角度和条形码在扫描仪视场中的空间位置。