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    • 12. 发明授权
    • Error diffusion with averaged directional biases
    • 误差扩散与平均方向偏差
    • US07265872B2
    • 2007-09-04
    • US10684641
    • 2003-10-15
    • Charles P. Tresser
    • Charles P. Tresser
    • G06F15/00G06K1/00G06K15/00
    • H04N1/4052
    • A method and system are provided to perform digital printing using error diffusion but without the usual problems of the anisotropy associated with that method. The method computes several error diffused digital images on a variety of rasters, and averages them with some chosen set of weights. The method works directly for printers with more than two choices per color per pixel, and can be implemented by defining super-pixels, even with the simpler printers that have only white and black or two color value per color coordinate.
    • 提供了一种使用误差扩散来执行数字打印但没有与该方法相关联的各向异性的常见问题的方法和系统。 该方法在各种光栅上计算出几个误差扩散的数字图像,并用一些选定的权重进行平均。 该方法直接用于每个像素每个颜色有两个以上选择的打印机,并且可以通过定义超像素来实现,即使使用仅具有每个颜色坐标的白色和黑色或两个颜色值的更简单的打印机。
    • 17. 发明授权
    • Method and apparatus for depositing ordinary checks from home or office
    • 从家庭或办公室存放普通支票的方法和装置
    • US06450403B1
    • 2002-09-17
    • US09989697
    • 2001-11-21
    • Marco MartensCharles P. TresserRobert J. von GutfeldChai W. Wu
    • Marco MartensCharles P. TresserRobert J. von GutfeldChai W. Wu
    • G06F1760
    • G06Q20/04G06K7/10861G06Q20/042
    • An apparatus and method allow to deposit ordinary checks from home or office. A special scanner is used to scan an endorsed check for deposit. The check may have printed thereon encryptions in at least selected locations. Scanning the endorsed check with the scanner to generates a digitized version of the check. The scanner virtually partitions the digitized version of the check into a plurality of regions. These regions may be stripes or zones. Each region is successively examined to extract from the digitized version of the check information from that region. The information extracted from a region is encrypted and transmitted to a bank. Upon acknowledgment from the bank, at least some of the regions of the plurality of regions voided by a form of indelible but non-invasive (e.g. allowing reading after voiding) marking such as punched holes, burned areas, overprinting of a pattern. The processing by the scanner continues until all regions have been processed. This progressively voiding scheme is an important security feature of the invention. The scanner is preferably contained in a secure housing with an encryption processor and the housing preferably includes an arrangement for detecting tampering and preventing normal operation if tampering is detected.
    • 一种装置和方法允许从家庭或办公室存放普通支票。 使用特殊扫描仪扫描支票支票以进行存款。 该检查可以在至少选定的位置上印刷有加密。 用扫描仪扫描已核准的支票,以生成支票的数字化版本。 扫描仪将支票的数字化版本实际上分成多个区域。 这些区域可以是条纹或区域。 连续检查每个区域以从该区域的检查信息的数字化版本中提取。 从区域提取的信息被加密并传送到银行。 在来自银行的确认之后,多个区域的至少一些区域通过不可磨灭但非侵入性的形式(例如,允许在排空之后读取)标记被消除,例如冲孔,烧焦区域,图案的套印。 扫描仪继续处理,直到所有区域都被处理。 这种逐渐排空方案是本发明的重要的安全特征。 扫描器优选地包含在具有加密处理器的安全壳体中,并且壳体优选地包括用于检测篡改并且如果检测到篡改则防止正常操作的装置。