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    • 46. 发明授权
    • Print N-tone images with imperceptible dots
    • 打印带有不可察觉的点的N色调图像
    • US5615021A
    • 1997-03-25
    • US459143
    • 1995-06-02
    • Qian Lin
    • Qian Lin
    • B41J2/52G06F3/12G06K3/00G06K15/00G06K15/02G06K15/10H04N1/40H04N1/405
    • H04N1/4055H04N1/4057
    • Generating a N-tone image relatively inexpensively with substantially imperceptible dots. The method generates the N-tone image from a grey scale image, both images have many pixels, with each pixel in the grey scale image having a grey level that is within a maximum and a minimum level, and with each pixel in the N-tone image having a level that is one of N levels with N bigger than two and less than the number of levels available for the grey scale image. The method includes the steps of determining the level of each pixel in the N-tone image based on the levels of its corresponding pixel in the grey scale image, and based on either an original dither matrix or an error diffusion technique. Each pixel is modelled by a number of sub-pixels, and each sub-pixel is modelled by a number of segments. Each segment has an intensity whose value depends on its corresponding pixel. The different intensities of the segments when combined together generate N substantially reproducible levels for the N-tone image. Based on the modelling step, the N-tone image is generated with substantially imperceptible dots.
    • 用基本上不可察觉的点相对便宜地生成N色调图像。 该方法从灰度图像生成N色调图像,两个图像具有许多像素,灰度图像中的每个像素具有在最大和最小水平内的灰度级,并且每个像素在N- 具有N级大于2并且小于可用于灰度图像的级数的N级的音调图像。 该方法包括以下步骤:基于灰度图像中其对应像素的电平,并且基于原始抖动矩阵或误差扩散技术来确定N色调图像中的每个像素的电平。 每个像素由多个子像素建模,并且每个子像素由多个片段建模。 每个段具有其值取决于其相应像素的强度。 当组合时,段的不同强度为N色调图像产生N个基本上可再现的电平。 基于建模步骤,产生具有基本上不可察觉的点的N色调图像。
    • 48. 发明授权
    • Application of human readable and machine readable labels
    • 人类可读和机器可读标签的应用
    • US3989929A
    • 1976-11-02
    • US573595
    • 1975-04-30
    • Fritz F. Treiber
    • Fritz F. Treiber
    • B65C9/42B65C9/46G06K3/00
    • B65C9/46B65C9/42
    • A system for weighing and labeling random weight packages of commodities includes a weighing scale, a price computer, and printers for printing both human readable and machine readable information. A commodity key includes a printing area for reproducing readable commodity identification and coded identification which is used to produce machine readable commodity identification. Entry of the key into the human readable printer also enters the coded identification. A second computer coacts with the machine readable label printer to produce a unique check character which is included in the printed information. Two labels are supplied, unique to each package, and are so presented from the printers that the label applicators guide the package to align the two labels on opposite sides of the package.
    • 用于称重和标注商品的随机重量包的系统包括称重秤,价格计算机和用于打印人类可读和机器可读信息的打印机。 商品密钥包括用于再现用于产生机器可读商品标识的可读商品标识和编码标识的打印区域。 钥匙进入人类可读打印机也输入编码标识。 第二台计算机与机器可读标签打印机共同生成包含在打印信息中的唯一检查字符。 提供了两个标签,每个包装都是独一无二的,并且从打印机那里呈现,标签贴标器引导包装,使包装的相对侧上的两个标签对齐。