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公开(公告)号：US06853468B2
公开(公告)日：2005-02-08
申请号：US10615349
申请日：2003-07-08
CPC分类号： H04N1/6016
摘要： A technique is described to greatly reduce or avoid the quantization errors that occur when mapping a relatively linear RGB color space into a greatly non-linear printer CMY color space of equal precision, avoiding the contouring or banding that occurs when printing color gradients in a non-linear printing system. The technique performs a dither-like process on the original RGB continuous tone data. The RGB values are dithered to create a range of values that, when mapped to the non-linear printer continuous tone CMY values, creates a range of CMY values that, on average, represent the correct average tone of the input RGB values. The generated CMY continuous tone values are then halftoned and printed.
摘要翻译： 描述了一种技术，以大大减少或避免将相对线性的RGB颜色空间映射到相当精度的非常非线性的打印机CMY颜色空间中时发生的量化误差，避免了当在非打印机中打印色彩渐变时发生的轮廓或条带 线性打印系统。 该技术对原始RGB连续色调数据执行类似抖动的处理。 RGB值被抖动以创建一定范围的值，当映射到非线性打印机连续色调CMY值时，创建平均来说表示输入RGB值的正确平均色调的CMY值的范围。 然后将生成的CMY连续色调值半色调并打印。
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公开(公告)号：US06760122B1
公开(公告)日：2004-07-06
申请号：US09379983
申请日：1999-08-24
IPC分类号： H04N1405
CPC分类号： H04N1/6016
摘要： A technique is described to greatly reduce or avoid the quantization errors that occur when mapping a relatively linear RGB color space into a greatly non-linear printer CMY color space of equal precision, avoiding the contouring or banding that occurs when printing color gradients in a non-linear printing system. The technique performs a dither-like process on the original RGB continuous tone data. The RGB values are dithered to create a range of values that, when mapped to the non-linear printer continuous tone CMY values, creates a range of CMY values that, on average, represent the correct average tone of the input RGB values. The generated CMY continuous tone values are then halftoned and printed.
摘要翻译： 描述了一种技术，以大大减少或避免将相对线性的RGB颜色空间映射到相当精度的非常非线性的打印机CMY颜色空间中时发生的量化误差，避免了当在非打印机中打印色彩渐变时发生的轮廓或条带 线性打印系统。 该技术对原始RGB连续色调数据执行类似抖动的处理。 RGB值被抖动以创建一定范围的值，当映射到非线性打印机连续色调CMY值时，创建平均来说表示输入RGB值的正确平均色调的CMY值的范围。 然后将生成的CMY连续色调值半色调并打印。
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公开(公告)号：US06628411B2
公开(公告)日：2003-09-30
申请号：US09946872
申请日：2001-09-05
申请人： Steven O Miller , Elden Wood
发明人： Steven O Miller , Elden Wood
IPC分类号： H04N726
CPC分类号： H04N1/41
摘要： A fast, raster-based, enhanced, data compression technique for the printing of compound documents, including pre-processing images in an original page description form of the data before the page data is rasterized, greatly improving compressibility. Unscaled image data is filtered before it is rasterized to the final printing resolution. The filtering specifically enables a separate, near loss-less, compression algorithm to operate on a rasterized page description with high compression ratios. A data compression technique enables a system to compress compound document using a relatively fast and simple algorithm with near loss-less print quality.
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4.发明授权Raster row and byte group graphics images data compression method 失效RASTER ROW AND BYTE GROUP GRAPHICS IMAGES DATA COMPRESSION METHOD
公开(公告)号：US5060286A
公开(公告)日：1991-10-22
申请号：US299363
申请日：1989-01-19
申请人： Steven O. Miller
发明人： Steven O. Miller
CPC分类号： H04N1/4175 , H04N1/415
摘要： The invented graphics images data compression method includes software which selectively compresses data on a raster-row-by-raster-row basis or on a byte-group-by-byte-group basis. The raster-row-by-raster-row basis compares bytes within adjacent raster rows and thereby detects repetitions between the rows. When data is compared on a raster-row-by-raster-row basis, the invented method records any differences as relative offset and replacement bytes. The byte-group-by-byte-group basis compares different byte groups within a single raster row, and thereby detects repetitions within the row itself.
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公开(公告)号：US06257693B1
公开(公告)日：2001-07-10
申请号：US08827628
申请日：1997-04-10
IPC分类号： B41J29393
CPC分类号： G06K15/102 , G06K15/02 , G06K15/107 , G06K15/1825 , G06K15/1852 , G06K15/1855 , G06K2215/0011 , G06K2215/0062 , G06K2215/0065 , G06K2215/0094 , H04N1/40 , H04N1/40062
摘要： A method of automatically optimizing the controllable parameters related to producing printed material on a hardcopy output device is provided, along with a hardcopy output device configured for implementing this method. Users require different types of printed objects to have different characteristics. Specifically, business graphics need to be sharp and vivid, photographic images should look realistic, and text must be black, crisp and clear. By extracting, analyzing and conditioning data generated during a printing stream, the various regions of text, graphics and photographic images on a sheet are distinguished, characterized, and printed. The resulting hardcopy output has a custom balancing of color which is pleasing to the human eye for each type of image printed, and which has print characteristics tailored for the specific elements on the page.
摘要翻译： 提供了一种在硬拷贝输出设备上自动优化与制作印刷材料相关的可控参数的方法，以及配置用于实现该方法的硬拷贝输出设备。 用户需要不同类型的打印对象具有不同的特性。 具体来说，商业图形需要清晰和生动，照片图片应该看起来真实，文字必须是黑色，清晰和清晰。 通过提取，分析和调节在打印流期间产生的数据，片材上的文本，图形和照片图像的各个区域被区分，表征和打印。 所得到的硬拷贝输出具有自定义的颜色平衡，其对于打印的每种类型的图像对于人眼是令人愉快的，并且具有针对页面上的特定元素定制的打印特征。
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6.发明授权Automatic optimization of hardcopy output for enhanced appearance and throughput 失效自动优化硬拷贝输出，增强外观和吞吐量
公开(公告)号：US5731823A
公开(公告)日：1998-03-24
申请号：US188618
申请日：1994-01-27
申请人： Steven O. Miller , William J. Allen
发明人： Steven O. Miller , William J. Allen
CPC分类号： G06K15/02 , G06K2215/0011 , G06K2215/0062 , G06K2215/0065 , G06K2215/0094
摘要： A method of automatically optimizing the controllable parameters related to producing printed material on a hardcopy output device is provided, along with a hardcopy output device configured for implementing this method. Users require different types of printed objects to have different characteristics. Specifically, business graphics need to be sharp and vivid, photographic images should look realistic, and text must be black, crisp and clear. By extracting, analyzing and conditioning data generated during a printing stream, the various regions of text, graphics and photographic images on a sheet are distinguished, characterized, and printed with a custom balancing of color pleasing to the human eye for each type of image printed.
摘要翻译： 提供了一种在硬拷贝输出设备上自动优化与制作印刷材料相关的可控参数的方法，以及配置用于实现该方法的硬拷贝输出设备。 用户需要不同类型的打印对象具有不同的特性。 具体来说，商业图形需要清晰和生动，照片图片应该看起来真实，文字必须是黑色，清晰和清晰。 通过提取，分析和调节在打印流中产生的数据，片材上的文本，图形和照片图像的各个区域被区分，表征和打印，以便为每种类型的图像打印出与人眼相似的颜色的定制平衡 。
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公开(公告)号：US5633662A
公开(公告)日：1997-05-27
申请号：US926264
申请日：1992-08-05
申请人： William J. Allen , Steven O. Miller
发明人： William J. Allen , Steven O. Miller
CPC分类号： B41J2/2121 , G06K15/102 , H04N1/40025 , H04N1/52 , G06K2215/0071
摘要： A process is disclosed for controlling ink volume in liquid ink printing systems such as ink jet printers. The process examines the total ink volume per pixel as specified in source image data (typically 24-bit, three color data), i.e. before digital halftoning. For each pixel of data, the specified ink volume is compared to a selected maximum total ink volume per pixel. The maximum total ink volume is selected, depending upon the printing medium and environmental conditions, so as to provide good color coverage while avoiding curl, bleeding and other adverse effects of excessive ink volume. The source image ink volume is reduced so as to form depleted image data in which the ink volumes per pixel do not exceed the selected maximum. Preferably, a threshold ink volume also is selected, below which no ink limiting is applied, thereby avoiding washed-out images at lower ink volumes. Above the threshold, the ink volume is scaled to a value below the maximum, preferably by linear scaling.
摘要翻译： 公开了一种用于控制诸如喷墨打印机的液体油墨印刷系统中的油墨体积的方法。 该过程检查在源图像数据（通常为24位，三色数据）中指定的每像素的总墨水量，即在数字半色调之前。 对于数据的每个像素，将指定的墨水量与每个像素的所选最大总墨水体积进行比较。 根据打印介质和环境条件选择最大总墨量，以提供良好的颜色覆盖，同时避免卷曲，渗色和其他不良影响的墨水量过大。 源图像油墨体积减小以形成耗尽的图像数据，其中每像素的油墨体积不超过所选择的最大值。 优选地，还选择阈值油墨体积，在该阈值油墨体积下方不施加墨水限制，从而避免在较低油墨体积下的冲洗图像。 高于阈值时，油墨体积被缩放到低于最大值的值，优选地通过线性缩放。
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8.发明授权Raster imaging device speed-resolution product multiplying method and resulting pixel image data structure 失效光栅成像设备速度分辨率乘法法和得到的像素图像数据结构
公开(公告)号：US5270728A
公开(公告)日：1993-12-14
申请号：US686898
申请日：1991-04-17
申请人： Mark D. Lund , Steven O. Miller
发明人： Mark D. Lund , Steven O. Miller
IPC分类号： B41J2/51 , B41J2/205 , B41J2/485 , B41J2/505 , G06K15/10 , G06T5/30 , H04N1/40 , H04N1/409 , B41J2/01
CPC分类号： B41J2/5058 , B41J2/2052 , G06K15/102 , H04N1/40068
摘要： A method for multiplying the speed-resolution product of a raster scanning or imaging device such as an inkjet printer, and a resulting pixel image data structure, are disclosed. Illustratively, a 300-dot per inch (dpi) by 600-dpi logical pixel image is mapped to a corresponding, non-overlapping physical dot image, and the printer's inkjets are fired responsive to the dot image to direct generally spherical ink droplets onto paper at 600-dpi resolution grid timing in order effectively to double the horizontal resolution of the printed pixel image, without increasing the firing rate of the print head. In order to accomplish this, and to avoid ink dot overlap, the printable pixel image is thinned before it is printed by a method that leaves no visible horizontal or vertical gaps by selectively turning off pixels within a `black` image that were on and that otherwise would result in ink dot overlap and slower print head speeds were the inkjets cycled at 600-dpi resolution timing. Pixel thinning is performed substantially without adversely affecting pixel image edge definition.
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公开(公告)号：US06373583B1
公开(公告)日：2002-04-16
申请号：US09193321
申请日：1998-11-16
申请人： Elden Wood , Steven O Miller
发明人： Elden Wood , Steven O Miller
IPC分类号： H04N726
CPC分类号： H04N1/648 , H03M7/3077 , H03M7/48
摘要： A fast, raster-based, enhanced, data compression technique for the printing of compound documents, including pre-processing images in an original page description form of the data before the page data is rasterized, greatly improving compressibility. Unscaled image data is filtered before it is rasterized to the final printing resolution. The filtering specifically enables a separate, near loss-less, compression algorithm to operate on a rasterized page description with high compression ratios. A data compression technique enables a system to compress compound document using a relatively fast and simple algorithm with near loss-less print quality.
摘要翻译： 用于打印复合文档的快速，基于光栅的增强型数据压缩技术，包括在页面数据被光栅化之前的数据的原始页面描述形式中预处理图像，大大提高了可压缩性。 在将光标化为最终打印分辨率之前，将过滤未缩放的图像数据。 该滤波专门实现了一种单独的，近无损的压缩算法，可在具有高压缩比的光栅化页面描述上进行操作。 数据压缩技术使得系统能够使用具有近无损打印质量的相对快速和简单的算法来压缩复合文档。
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10.发明授权
公开(公告)号：US5265176A
公开(公告)日：1993-11-23
申请号：US686732
申请日：1991-04-17
申请人： Steven O. Miller
发明人： Steven O. Miller
IPC分类号： B41J2/485 , B41J5/30 , G06F3/12 , G06K15/00 , G06T3/40 , G06K9/42 , G06K9/32 , G09G1/06 , H04N1/32
CPC分类号： G06K15/00 , G06K2215/0005 , G06K2215/0071 , G06K2215/0077
摘要： A method is disclosed of mapping raster data input of a source data set to a destination data set, wherein the source and destination data sets have different resolutions. Initially, a resolution ratio is determined between the source data set and the destination data set. The horizontal component of the source data set is converted to the resolution of the destination data set by copying select discrete groups of the source data to form a desired number of discrete groups of the destination data. A select number of vertical, or raster, rows of the horizontally converted data set are copied to form a required number of rows, thereby completing the destination data set. Look-up tables are provided to efficiently convert the horizontal component of the source data set. An apparatus for mapping raster data input includes a computation mechanism for determining the resolution ratio, and mechanisms for converting the horizontal and vertical components of the source data set into the destination data set. Additionally, a look-up table generator is provided.
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