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    • 2. 发明授权
    • Multi-stage overvoltage protection circuit, in particular for information-technology systems
    • 多级过压保护电路,特别是信息技术系统
    • US08724276B2
    • 2014-05-13
    • US12998457
    • 2009-10-20
    • Peter IglThomas Boehm
    • Peter IglThomas Boehm
    • H02H3/22
    • H02H9/045H02H3/44H02H9/042
    • The invention relates to a multi-staged overvoltage protection circuit, in particular for information-technology systems, comprising at least one coarse protection element and at least one fine protection element, wherein the at least one fine protection element can be activated by a triggering device depending on a threshold. According to the invention, the applied operating voltage is led to an evaluation device, which generates a reference voltage. Also provided is an evaluation unit, firstly for checking to see whether the current operating voltage is above the reference voltage, secondly for checking to see whether the voltage excess exceeds a previously determined level, and thirdly for establishing whether the rate of change of the operating voltage is greater than another previously determined value so that a transient overvoltage exists, wherein the triggering device then receives an activation signal from the evaluation device.
    • 本发明涉及一种多级过电压保护电路,特别是用于信息技术系统,包括至少一个粗略保护元件和至少一个精细保护元件,其中该至少一个精细保护元件可由触发装置 取决于阈值。 根据本发明,施加的工作电压被引导到产生参考电压的评估装置。 还提供了一个评估单元,首先用于检查当前工作电压是否高于参考电压,其次是检查电压超出是否超过先前确定的电平,第三是确定运行的变化率 电压大于另一先前确定的值,使得存在瞬态过电压,其中触发装置然后从评估装置接收激活信号。
    • 4. 发明授权
    • Bar code scanning system with the pre-decoding signal processing and
method for bar code candidate selection for decoding
    • 条码扫描系统具有预解码信号处理和条码候选选择方法进行解码
    • US5821520A
    • 1998-10-13
    • US910435
    • 1997-08-13
    • Altaf MullaAnthony FamaThomas BoehmDaniel BrownWilliam Sackett
    • Altaf MullaAnthony FamaThomas BoehmDaniel BrownWilliam Sackett
    • G06K7/14G06K7/110
    • G06K7/14
    • A system for processing output signals of an electro-optical scanner adapted for reading a bar code indicia having parts of different light reflectivity and non bar code indicia adjacent the bar code on an article being scanned comprises a decoder for decoding content of signals input thereto and signal processing circuitry for receiving the scanner output signals and generating input signals for input to the decoder by deleting signals having non bar code indicia content from the received scanner output signals by examining characteristics of the received scanner output signals. The signal processing circuitry is adapted to generate input signals for input to the decoder for bar code indicia of respective different bar code symbologies. The signal processing circuitry includes deletion circuitry for deleting, from the received scanner output signals, signals having less time duration than a predetermined time duration. The signal processing circuitry also includes one or both of first ratio computation means for computing a ratio of characteristics of adjacent of the received scanner output signals and second ratio computation means for computing a ratio of characteristics of non-adjacent of the received scanner output signals.
    • 一种用于处理适于读取具有不同光反射率的条形码标记的电光扫描仪的输出信号的系统,以及与所扫描的物品相邻的条形码的非条形码标记,包括用于对输入的信号的内容进行解码的解码器, 信号处理电路,用于通过检查所接收的扫描仪输出信号的特性,通过从接收到的扫描器输出信号中删除具有非条形码标记内容的信号,从而产生用于输入到解码器的输入信号。 信号处理电路适于产生用于输入到解码器的输入信号,用于各个不同条形码符号的条形码标记。 信号处理电路包括删除电路,用于从接收到的扫描仪输出信号中删除具有比预定持续时间更短的持续时间的信号。 信号处理电路还包括用于计算接收到的扫描仪输出信号的相邻特性的比率的第一比率计算装置中的一个或两个,以及用于计算接收到的扫描仪输出信号的不相邻特性的比率的第二比率计算装置。
    • 8. 发明申请
    • Methods and apparatus for identifying candidate barcode fields
    • 用于识别候选条形码字段的方法和装置
    • US20070119939A1
    • 2007-05-31
    • US11291187
    • 2005-11-30
    • Alan EpshteynDavid KochThomas BoehmAlan LivingstonJoseph Boriotti
    • Alan EpshteynDavid KochThomas BoehmAlan LivingstonJoseph Boriotti
    • G06K7/10
    • G06K7/1093G06K7/10712G06K7/10792G06K7/10861G06K7/10871G06K2207/1011
    • A system is provided for selecting a particular barcode on an item that includes multiple barcodes. The system (1) acquires, via a barcode imager, an image of the item within the field of view of the barcode imager, (2) analyzes the acquired image to determine a set of potential barcode fields, (3) determines, using a predetermined criterion (e.g., distance from center of imaged area, type of bar code, etc.), a candidate barcode field from among the set of potential barcode fields, (4) displays a modified image derived from the acquired image, wherein the candidate barcode field is identified within the modified image, and (5) allows the user to initiate a decode session when the candidate barcode field includes the desired barcode. The acquired may be modified to highlight the candidate barcode field in any number of ways, including, for example, superimposing an artificial reticule around the candidate field, superimposing an artificial scan line over the field, altering the contrast of the field, and/or altering the brightness of the field.
    • 提供了一种用于在包括多个条形码的物品上选择特定条形码的系统。 系统(1)通过条形码成像器获取条形码成像器的视野内的物品的图像,(2)分析所获取的图像以确定一组潜在的条形码字段,(3)使用 预定标准(例如,距成像区域的距离,条形码类型等),潜在条形码字段集合中的候选条形码字段,(4)显示从所获取的图像导出的修改图像,其中候选 在修改的图像内识别条形码字段,(5)允许用户在候选条形码字段包含期望的条形码时启动解码会话。 所获取的可以被修改为以任何数量的方式突出显示候选条形码字段,包括例如在候选字段周围叠加人造网格,在字段上叠加人造扫描线,改变字段的对比度和/或 改变场地的亮度。
    • 9. 发明申请
    • System and method for configuring an omnidirectional scanner
    • 用于配置全向扫描仪的系统和方法
    • US20050077359A1
    • 2005-04-14
    • US10824582
    • 2004-04-14
    • Thomas BoehmMorgan FuchsDaniel GonzalezPatrick SalattoJoel KahnGeorge LasherEd Barkan
    • Thomas BoehmMorgan FuchsDaniel GonzalezPatrick SalattoJoel KahnGeorge LasherEd Barkan
    • G06K7/10G06K7/14
    • G06K7/10544G06K7/14
    • A system and method are provided for reading at least one optical code, including an omnidirectional optical code scanner system for illuminating, scanning and decoding at least one optical code within a field of view of the scanning system and oriented in an orientation included in a set of multiple orientations. The scanner system includes an actuator assembly having circuitry for providing for user selection of a mode selected from the group of modes consisting of: an omnidirectional mode for performing a read operation for reading an optical code oriented in any orientation included in the set of multiple orientations, a restricted omnidirectional mode for performing a read operation for reading the optical code when oriented only in an orientation of a reduced set of the set of multiple orientations; and an aim mode for illuminating a target object and disrupting a corresponding read operation; and circuitry for generating a signal indicative of the mode selection. The scanner system further includes at least one processor for operating the scanning system in the selected mode in accordance with the signal indicative of the mode selection.
    • 提供了一种用于读取至少一个光学代码的系统和方法,包括用于照射,扫描和解码扫描系统的视野内的至少一个光学代码的全向光学代码扫描器系统,并且以包括在一组中的取向 的多个方向。 扫描仪系统包括具有电路的致动器组件,其具有用于选择从以下模式中选择的模式的用户的选择:包括以下操作的全方向模式:用于执行读取操作的读取操作,所述读取操作以包括在多个取向集中的任何取向 限制全向模式,用于当仅定向在所述多个取向集合的缩小集合的取向时执行用于读取光学代码的读取操作; 以及用于照亮目标对象并中断对应的读取操作的目标模式; 以及用于产生指示模式选择的信号的电路。 扫描器系统还包括至少一个处理器,用于根据指示模式选择的信号以所选模式操作扫描系统。