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11 条记录 (耗时 0.029 秒)

    Analog-to-digital converter with automatic range and sensitivity adjustment
    1.
    发明授权
    Analog-to-digital converter with automatic range and sensitivity adjustment 有权
    具有自动量程和灵敏度调节的模数转换器

    公开(公告)号：US07413126B2

    公开(公告)日：2008-08-19

    申请号：US11705545

    申请日：2007-02-12

    申请人： John A. Pettinelli, Jr. ,  Matthew W. Pankow ,  Joseph T. Livingston ,  Edward C. Bremer ,  Timothy P. Meier

    发明人： John A. Pettinelli, Jr. ,  Matthew W. Pankow ,  Joseph T. Livingston ,  Edward C. Bremer ,  Timothy P. Meier

    IPC分类号： G06K7/10

    CPC分类号： H03M1/182 ,  G06K7/10851

    摘要： The invention is a system and method for providing optimized accuracy and precision in analog-to-digital conversions of data. In an embodiment of the invention, an A/D converter is configured by setting two separately definable reference voltages that are controlled by a microprocessor. The A/D converter range is as wide as, or slightly greater than, a dynamic range of the analog signal to be converted. The microprocessor adjusts at least one reference voltage. The A/D converter receives analog signals from a sensor. The dynamic range of the signal from the sensor, or the sensor operating conditions, are used to define the reference voltages. The converted data is provided to a data processor at a rate controlled by a clocking signal. In a method according to the invention, the A/D converter is operated using the features described above. The accuracy and the precision of the converted data are thereby optimized.

    摘要翻译： 本发明是一种用于在数字模数转换中提供优化的精度和精度的系统和方法。 在本发明的一个实施例中，通过设置由微处理器控制的两个可分离定义的参考电压来配置A / D转换器。 A / D转换器的范围与要转换的模拟信号的动态范围一样宽或稍大。 微处理器调整至少一个参考电压。 A / D转换器从传感器接收模拟信号。 来自传感器的信号或传感器工作条件的动态范围用于定义参考电压。 转换的数据以时钟信号控制的速率提供给数据处理器。 在根据本发明的方法中，使用上述特征来操作A / D转换器。 由此优化转换数据的精度和精度。

    Optical reader exposure control apparatus comprising illumination level detection circuitry
    3.
    发明授权
    Optical reader exposure control apparatus comprising illumination level detection circuitry 失效
    光读取器曝光控制装置，包括照明级检测电路

    公开(公告)号：US06254003B1

    公开(公告)日：2001-07-03

    申请号：US09099604

    申请日：1998-06-18

    申请人： John A. Pettinelli ,  Dennis McEnery

    发明人： John A. Pettinelli ,  Dennis McEnery

    IPC分类号： G06K714

    CPC分类号： G06K7/10584 ,  G06K7/10752 ,  G06K7/10851

    摘要： An exposure control apparatus for use with optical readers, such as bar code readers, which utilize photosensitive image sensors. An illumination signal generating circuit generates an illumination signal having a magnitude that varies in accordance with the illumination level at the image sensor. A window detecting circuit samples the illumination signal during a predetermined part of each scan to determine whether the illumination signal is within the window, has exited the window, or has re-entered the window. Exposure control circuitry uses the output of the window detecting circuit to control which of a plurality of the subdivisions of the exposure control range of the image sensor will be used. Changes in exposure time are made only between adjacent subdivisions of the exposure control range. Together with a predetermined hysteresis between the exit and re-entry thresholds of the window, the latter changes stabilize the operation of the reader by reducing exposure control “hunting”.

    摘要翻译： 一种用于光学读取器的曝光控制装置，例如利用光敏图像传感器的条形码阅读器。 照明信号发生电路产生具有根据图像传感器的照度的变化的幅度的照明信号。 窗口检测电路在每次扫描的预定部分期间对照明信号进行采样，以确定照明信号是否在窗口内，已经退出窗口，或已经重新进入窗口。 曝光控制电路使用窗口检测电路的输出来控制将使用图像传感器的曝光控制范围的多个细分中的哪一个。 曝光时间的变化仅在曝光控制范围的相邻细分之间进行。 与窗口的出口和重入阈值之间的预定滞后一起，后者通过减少曝光控制“搜索”来改变读者的操作。

    Decoder board for an optical reader utilizing a plurality of imaging formats
    6.
    发明授权
    Decoder board for an optical reader utilizing a plurality of imaging formats 有权
    用于使用多种成像格式的光学读取器的解码器板

    公开(公告)号：US08016196B2

    公开(公告)日：2011-09-13

    申请号：US12754368

    申请日：2010-04-05

    申请人： Timothy P. Meier ,  Robert C. Gardiner ,  Jeffrey Dean Harper ,  John Izzo ,  Thomas J. Koziol ,  Andrew Longacre, Jr. ,  John A. Pettinelli, Jr.

    发明人： Timothy P. Meier ,  Robert C. Gardiner ,  Jeffrey Dean Harper ,  John Izzo ,  Thomas J. Koziol ,  Andrew Longacre, Jr. ,  John A. Pettinelli, Jr.

    IPC分类号： G06K7/10

    CPC分类号： G06K7/1439 ,  G06K7/10574 ,  G06K7/10881 ,  G06K7/1098

    摘要： The invention relates to a microprocessor-based decoder board for an optical reader having in one embodiment a plurality of imaging modules that provide frames of image data having a plurality of formats. In one method for operating the decoder board of the invention, and a multiple imaging module reader comprising the decoder board, a frame of image data captured by a selected imaging module is decoded. The decoder board determines the format of the frame of image data from information about which of the plurality of imaging modules provided the frame of image data or from information about the frame of image data, activates as necessary a command to prepare the decoder board to decode the frame of image data according to the format provided by the imaging module, and performs the decoding.

    摘要翻译： 本发明涉及一种用于光学阅读器的基于微处理器的解码器板，在一个实施例中，多个成像模块提供具有多种格式的图像数据帧。 在用于操作本发明的解码器板的一种方法中，以及包括解码器板的多成像模块读取器，解码由所选择的成像模块捕获的图像数据的帧。 解码器板根据提供图像数据帧的多个成像模块中的哪一个或者关于图像数据帧的信息的信息确定图像数据帧的格式，根据需要激活准备解码器板解码的命令 根据由成像模块提供的格式的图像数据帧，并执行解码。

    Analog-to-digital converter with automatic range and sensitivity adjustment
    7.
    发明授权
    Analog-to-digital converter with automatic range and sensitivity adjustment 有权
    具有自动量程和灵敏度调节的模数转换器

    公开(公告)号：US07175092B2

    公开(公告)日：2007-02-13

    申请号：US10842717

    申请日：2004-05-10

    申请人： John A. Pettinelli, Jr. ,  Matthew W. Pankow ,  Joseph T. Livingston ,  Edward C. Bremer ,  Timothy P. Meier

    发明人： John A. Pettinelli, Jr. ,  Matthew W. Pankow ,  Joseph T. Livingston ,  Edward C. Bremer ,  Timothy P. Meier

    IPC分类号： G06K7/10

    CPC分类号： H03M1/182 ,  G06K7/10851

    摘要： The invention is a system and method for providing optimized accuracy and precision in analog-to-digital conversions of data. In an embodiment of the invention, an A/D converter is configured by setting two separately definable reference voltages that are controlled by a microprocessor. The A/D converter range is as wide as, or slightly greater than, a dynamic range of the analog signal to be converted. The microprocessor adjusts at least one reference voltage. The A/D converter receives analog signals from a sensor. The dynamic range of the signal from the sensor, or the sensor operating conditions, are used to define the reference voltages. The converted data is provided to a data processor at a rate controlled by a clocking signal. In a method according to the invention, the A/D converter is operated using the features described above. The accuracy and the precision of the converted data are thereby optimized.

    摘要翻译： 本发明是一种用于在数字模数转换中提供优化的精度和精度的系统和方法。 在本发明的一个实施例中，通过设置由微处理器控制的两个可分离定义的参考电压来配置A / D转换器。 A / D转换器的范围与要转换的模拟信号的动态范围一样宽或稍大。 微处理器调整至少一个参考电压。 A / D转换器从传感器接收模拟信号。 来自传感器的信号或传感器工作条件的动态范围用于定义参考电压。 转换的数据以时钟信号控制的速率提供给数据处理器。 在根据本发明的方法中，使用上述特征来操作A / D转换器。 由此优化转换数据的精度和精度。

    Exposure control apparatus for use with optical readers
    8.
    发明授权
    Exposure control apparatus for use with optical readers 失效
    用于光学读取器的曝光控制装置

    公开(公告)号：US5831254A

    公开(公告)日：1998-11-03

    申请号：US574386

    申请日：1995-12-18

    申请人： Thomas W. Karpen ,  Dennis W. McEnery ,  Robert C. Gardiner ,  John A. Pettinelli

    发明人： Thomas W. Karpen ,  Dennis W. McEnery ,  Robert C. Gardiner ,  John A. Pettinelli

    IPC分类号： G06K7/10

    CPC分类号： G06K7/10851 ,  G06K7/10584 ,  G06K7/10752

    摘要： An exposure control apparatus for use with optical readers, such as bar code readers, which utilize photosensitive image sensors. An illumination signal generating circuit generates an illumination signal having a magnitude that varies in accordance with the time averaged value of the illumination level at the image sensor. A window detecting circuit periodically samples the illumination signal to determine if that signal is or is not within a window of acceptability. Exposure period determining circuitry uses the output of the window detecting circuit to upwardly or downwardly adjust the value of a control variable as necessary to cause the illumination signal to approach, enter and remain within the window of acceptability.

    摘要翻译： 一种用于光学读取器的曝光控制装置，例如利用光敏图像传感器的条形码阅读器。 照明信号发生电路产生具有根据图像传感器的照度级的时间平均值变化的幅度的照明信号。 窗口检测电路周期性地对照明信号进行采样，以确定该信号是否在不可接受的窗口内。 曝光周期确定电路使用窗口检测电路的输出来向上或向下调整控制变量的值，以使照明信号接近，进入并保持在可接受窗口内。