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    • 91. 发明授权
    • Amplitude modulation of illuminators in sensing applications in printing system
    • 在印刷系统中感应应用中照明器的幅度调制
    • US07869732B2
    • 2011-01-11
    • US12167428
    • 2008-07-03
    • Aaron Michael BurryJulianna Elizabeth LinPeter Paul
    • Aaron Michael BurryJulianna Elizabeth LinPeter Paul
    • G03G15/00G03G15/01G03G15/02
    • G03G15/5037G03G15/0131G03G15/1605G03G15/161G03G15/5058G03G2215/00042G03G2215/00059G03G2215/0164
    • An image printing system includes a print engine and a sensing system. The print engine is configured to print a marking material image on a image bearing surface. The sensing system includes a plurality of illuminators, a modulator, a sensor, and a demodulator. Each illuminator is configured to simultaneously emit a light beam at the marking material image on the image bearing surface, thereby producing reflectance from the marking material image at least in a first direction. The modulator is configured to modulate an intensity characteristic of each of the light beams emitted by the illuminators such that each light beam has a different modulated waveform characteristic, where the waveform characteristic includes at least frequency. The sensor is configured to detect the reflectance from the plurality of light beams in the first direction and output a reflectance signal. The demodulator is configured to demodulate the reflectance signal to isolate a response of the marking material image to each of the individual illuminators.
    • 图像打印系统包括打印引擎和感测系统。 打印引擎被配置为在图像承载表面上打印标记材料图像。 感测系统包括多个照明器,调制器,传感器和解调器。 每个照明器被配置为同时在图像承载表面上的标记材料图像处发射光束,从而至少在第一方向上从标记材料图像产生反射率。 调制器被配置为调制由照明器发射的每个光束的强度特性,使得每个光束具有不同的调制波形特性,其中波形特性至少包括频率。 传感器被配置为检测来自第一方向上的多个光束的反射率并输出反射信号。 解调器被配置为解调反射信号,以将标记材料图像的响应隔离成各个照明器。
    • 93. 发明申请
    • BANDING PROFILE ESTIMATOR USING MULTIPLE SAMPLING INTERVALS
    • 使用多个采样间隔的带状轮廓估计器
    • US20090002724A1
    • 2009-01-01
    • US11769044
    • 2007-06-27
    • Peter PaulSahand Rabbani
    • Peter PaulSahand Rabbani
    • G06F15/00G06K15/00
    • G06K15/00G06K15/027
    • A method of integrating multiple sampling interval image data with timing information from a defect once-around sensor and the machine page sync signals to estimate a banding profile. By augmenting the sampling interval data with the timing data, proper phasing of each frequency over each sampling interval can be maintained. Specifically, when the data over the multiple intervals is taken, the defect source once-around signal and the page sync signals are also recorded. The combination of this information allows the algorithm to extract phase and amplitude information of banding defects from the sampling intervals using a new matched-filter based parameter estimation algorithm. Estimated banding profiles are then generated from the known frequencies, and the estimated amplitude and phase values.
    • 一种将多个采样间隔图像数据与来自缺陷一次传感器和机器页面同步信号的定时信息进行集成以估计条带简档的方法。 通过利用定时数据增加采样间隔数据,可以保持每个采样间隔上每个频率的适当定相。 具体地说,当采用多个间隔的数据时,也记录缺陷源一次信号和寻呼同步信号。 该信息的组合允许算法使用新的基于匹配滤波器的参数估计算法从采样间隔中提取带状缺陷的相位和幅度信息。 然后从已知频率,估计的幅度和相位值产生估计的带状分布。
    • 96. 发明授权
    • Dual mode, dual information, document bar coding and reading system
    • 双模,双信息,文件条编码和阅读系统
    • US06457651B2
    • 2002-10-01
    • US09410986
    • 1999-10-01
    • Peter PaulGrace T. Brewington
    • Peter PaulGrace T. Brewington
    • G06K1906
    • G06K19/06028
    • A dual level encryption method, and document, for providing and obtaining a substantially increased amount of optically readable information from an otherwise conventional and highly visible printed bar code pattern area on a document without interfering with the conventional optical reading of the conventional information in the bar code, comprising integrally printing a second and very much finer pattern of encoded optically machine readable glyph code or other such indicia within the bar code pattern area, containing a much higher level of information, to provide two different levels of information within the same area. Scanning the bar code pattern with a conventional bar code reader extracts conventional bar coded information embedded in the bar code without interference from the second indicia. Scanning the same bar code pattern area with a different, higher resolution, optical scanner extracts the much greater amount of information from the second, much finer, optically readable indicia pattern.
    • 一种双级加密方法和文件,用于提供并从文档中的其他常规和高度可见的打印条形码图案区域获得显着增加的光学可读信息量,而不会干扰常规信息在条中的常规光学读取 代码,包括在包含更高级别的信息的条形码图案区域内整合地打印编码的光学机器可读字形码或其他此类标记的第二和非常精细的图案,以在同一区域内提供两个不同级别的信息。 用传统的条形码读取器扫描条形码图案,提取嵌入在条形码中的常规条形码信息,而不受第二标记的干扰。 使用不同的,更高分辨率的光学扫描仪扫描相同的条形码图案区域从第二,更精细的光学可读标记图案中提取更大量的信息。