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    • 1. 发明授权
    • Barcode reader with edge detection enhancement
    • 具有边缘检测增强的条形码阅读器
    • US08950678B2
    • 2015-02-10
    • US12948394
    • 2010-11-17
    • Gennady GermaineTao XianChen FengYnjiun WangXiaoxun ZhuStephen ColavitoRobert Blake
    • Gennady GermaineTao XianChen FengYnjiun WangXiaoxun ZhuStephen ColavitoRobert Blake
    • G06K9/38G06K7/10G06K7/14
    • G06K7/10851G06K7/1452
    • An optical reader for decoding an encoded symbol character of a symbology includes a scan data signal processor having as an input a scan data signal encoding information representative of the encoded symbol character. The scan data signal processor includes a first time delay stage adapted to provide a primary phase waveform from the scan data signal, a second time delay stage adapted to provide an early phase waveform from the scan data signal, and a third time delay stage adapted to provide a delayed phase waveform from the scan data signal. The early phase waveform has a propagation delay less than the primary phase waveform, and the delayed phase waveform has a propagation delay greater than the primary phase waveform. The scan data signal processor further includes a peak window detection stage for generating a peak window timeframe when an amplitude of the primary phase waveform is greater than, less than, or equal to both an amplitude of the early phase waveform and the delayed phase waveform. The optical reader further includes a digitizer circuit adapted to accept, within the peak window timeframe, the scan data signal processor output.
    • 用于解码符号系统的编码符号字符的光学读取器包括扫描数据信号处理器,其具有编码表示编码符号字符的信息的扫描数据信号作为输入。 扫描数据信号处理器包括适于从扫描数据信号提供初级相位波形的第一时间延迟级,适于从扫描数据信号提供早期相位波形的第二时间延迟级,以及适于 从扫描数据信号提供延迟相位波形。 早期相位波形的传播延迟小于初级相位波形,延迟相位波形的传播延迟大于主相位波形。 扫描数据信号处理器还包括峰值窗口检测级,用于当主相波形的振幅大于,小于或等于早期相位波形和延迟相位波形的振幅时产生峰值窗口时间帧。 光学读取器还包括数字转换器电路,其适于在峰值窗口时间帧内接收扫描数据信号处理器输出。
    • 2. 发明申请
    • BARCODE READER WITH EDGE DETECTION ENHANCEMENT
    • 条形码读取器,边缘检测增强
    • US20120118974A1
    • 2012-05-17
    • US12948394
    • 2010-11-17
    • Gennady GermaineTao XianChen FengYnjiun WangXiaoxun ZhuStephen ColavitoRobert Blake
    • Gennady GermaineTao XianChen FengYnjiun WangXiaoxun ZhuStephen ColavitoRobert Blake
    • G06K7/14
    • G06K7/10851G06K7/1452
    • An optical reader for decoding an encoded symbol character of a symbology includes a scan data signal processor having as an input a scan data signal encoding information representative of the encoded symbol character. The scan data signal processor includes a first time delay stage adapted to provide a primary phase waveform from the scan data signal, a second time delay stage adapted to provide an early phase waveform from the scan data signal, and a third time delay stage adapted to provide a delayed phase waveform from the scan data signal. The early phase waveform has a propagation delay less than the primary phase waveform, and the delayed phase waveform has a propagation delay greater than the primary phase waveform. The scan data signal processor further includes a peak window detection stage for generating a peak window timeframe when an amplitude of the primary phase waveform is greater than, less than, or equal to both an amplitude of the early phase waveform and the delayed phase waveform. The optical reader further includes a digitizer circuit adapted to accept, within the peak window timeframe, the scan data signal processor output.
    • 用于解码符号系统的编码符号字符的光学读取器包括扫描数据信号处理器,其具有编码表示编码符号字符的信息的扫描数据信号作为输入。 扫描数据信号处理器包括适于从扫描数据信号提供初级相位波形的第一时间延迟级,适于从扫描数据信号提供早期相位波形的第二时间延迟级,以及适于 从扫描数据信号提供延迟相位波形。 早期相位波形的传播延迟小于初级相位波形,延迟相位波形的传播延迟大于主相位波形。 扫描数据信号处理器还包括峰值窗口检测级,用于当主相波形的振幅大于,小于或等于早期相位波形和延迟相位波形的振幅时产生峰值窗口时间帧。 光学读取器还包括数字转换器电路,其适于在峰值窗口时间帧内接收扫描数据信号处理器输出。