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21. 发明授权

US07221479B2 Method for avoiding multiple color moirés in color halftoning 有权
标题翻译：避免彩色色调中多种颜色莫尔色的方法
公开(公告)号：US07221479B2
公开(公告)日：2007-05-22
申请号：US10449424
申请日：2003-05-30
申请人： Zhenhuan Wen
发明人： Zhenhuan Wen
IPC分类号： H04N1/52 , H04N1/58
CPC分类号： H04N1/52
摘要： A method for halftoning an image, including receiving image data including a plurality of color separations and comparing image data for first, second, third, and fourth separations to first, second, third, and fourth halftone screens. The screens are characterized by first, second, third, and fourth pairs of frequency vectors, respectively. The fourth pair of frequency vectors is identical to one of the first, second, and third pairs of frequency vectors. Further, the first, second, third, and fourth screens have an associated fill-in sequence, where the fill-in sequence of the fourth screen is such that overlap between the separation corresponding to the fourth screen and the separation corresponding to the one of the first, second, and third screens to which the fourth screen has an identical pair of frequency vectors does not occur until a combined dot area coverage of the separations is greater than 100%.
摘要翻译：一种用于半色调图像的方法，包括接收包括多个分色的图像数据，并将第一，第二，第三和第四分离的图像数据与第一，第二，第三和第四半色调屏幕进行比较。屏幕分别由第一，第二，第三和第四对频率矢量表征。第四对频率矢量与第一，第二和第三对频率矢量之一相同。此外，第一，第二，第三和第四屏幕具有相关联的填充序列，其中第四屏幕的填充顺序使得对应于第四屏幕的分离与对应于第四屏幕的分离之间的重叠第四屏幕具有相同频率矢量对的第一，第二和第三屏幕直到分离的组合点区域覆盖率大于100％才会发生。

22. 发明申请

US20120293815A1 METHOD OF PROCESSING NEUTRAL GRAY COLOR PRINT JOBS AS MONOCHROME BLACK DURING BILLING DETECTION AND PRINTING AS A NEUTRAL GRAY COMPOSITE BLACK 有权
标题翻译：中性灰色彩色打印作业中的黑色黑色复合黑色处理中的单色黑色处理方法
公开(公告)号：US20120293815A1
公开(公告)日：2012-11-22
申请号：US13562359
申请日：2012-07-31
申请人： Zhenhuan Wen , Francis K. Tse
发明人： Zhenhuan Wen , Francis K. Tse
IPC分类号： G06K15/02
CPC分类号： H04N1/4052
摘要： A method of converting a RIPped K-only page or pixels to composite black in a digital print engine is included which executes the conversion process during current job workflow, while detecting the K-only page or pixels for billing purposes as K-only, and printed out as composite black.
摘要翻译：包括在数字打印引擎中将RIP仅K页面或像素转换为复合黑色的方法，其在当前作业工作流程期间执行转换处理，同时仅将K页面或像素用于计费目的为K，以及印刷为复合黑色。

23. 发明申请

US20100195158A1 Method of processing neutral gray color print jobs as monochrome black during billing detection and printing as a neutral gray composite black 有权
标题翻译：在计费检测和打印期间将中性灰色打印作业处理为单色黑色的方法为中性灰色复合黑色
公开(公告)号：US20100195158A1
公开(公告)日：2010-08-05
申请号：US12366268
申请日：2009-02-05
申请人： Zhenhuan Wen , Francis K. Tse
发明人： Zhenhuan Wen , Francis K. Tse
IPC分类号： H04N1/40
CPC分类号： H04N1/4052
摘要： A method of converting a RIPped K-only page or pixels to composite black in a digital print engine is included which executes the conversion process during current job workflow, while detecting the K-only page or pixels for billing purposes as K-only, and printed out as composite black.
摘要翻译：包括在数字打印引擎中将RIP仅K页面或像素转换为复合黑色的方法，其在当前作业工作流程期间执行转换处理，同时仅将K页面或像素用于计费目的为K，以及印刷为复合黑色。

24. 发明申请

US20090009778A1 Converting black to composite black in digital printing 有权
标题翻译：在数码印刷中将黑色转换为复合黑色
公开(公告)号：US20090009778A1
公开(公告)日：2009-01-08
申请号：US11824689
申请日：2007-07-02
申请人： Zhenhuan Wen
发明人： Zhenhuan Wen
IPC分类号： G06F15/00
CPC分类号： H04N1/46 , H04N1/6022
摘要： A method of converting black to composite/process black in a digital color print engine. A lightness adjustment is employed for converting input image (O, O, O, Kin) to Ko and initial values of Co, Mo, Yo are set equal to Ko and then converted to C1, M1, Y1, K1 by GCR strategy. Values of Cout, Mout, Yout, Kout are determined by Gray Balance Adjustment for values of C1, M1, Y1, K1 and inputted to the color print engine. The user may disable the conversion to composite black and print black ink/tones if desired. The user may also input different parameters for Lightness Adjustment, Gray Component Replacement and Gray Balance Adjustment.
摘要翻译：在数字彩色打印引擎中将黑色转换为复合/处理黑色的方法。采用亮度调整将输入图像（O，O，O，Kin）转换为Ko，Co，Mo，Yo的初始值设置为Ko，然后通过GCR策略转换为C1，M1，Y1，K1。 Cout，Mout，Yout，Kout的值由C1，M1，Y1，K1的值通过灰度平衡调整确定，并输入到彩色打印引擎。如果需要，用户可以禁用转换为复合黑色并打印黑色墨水/色调。用户还可以为亮度调整，灰度元件更换和灰度平衡调整输入不同的参数。

25. 发明授权

US08422078B2 Method of processing neutral gray color print jobs as monochrome black during billing detection and printing as a neutral gray composite black 有权
标题翻译：在计费检测和打印期间将中性灰色打印作业处理为单色黑色的方法为中性灰色复合黑色
公开(公告)号：US08422078B2
公开(公告)日：2013-04-16
申请号：US13562359
申请日：2012-07-31
申请人： Zhenhuan Wen , Francis K. Tse
发明人： Zhenhuan Wen , Francis K. Tse
IPC分类号： H04N1/40
CPC分类号： H04N1/4052
摘要： A method of converting a RIPped K-only page or pixels to composite black in a digital print engine is included which executes the conversion process during current job workflow, while detecting the K-only page or pixels for billing purposes as K-only, and printed out as composite black.
摘要翻译：包括在数字打印引擎中将RIP仅K页面或像素转换为复合黑色的方法，其在当前作业工作流程期间执行转换处理，同时仅将K页面或像素用于计费目的为K，以及印刷为复合黑色。

26. 发明申请

US20070002381A1 Error diffusion method and hardware architecture 有权
标题翻译：错误扩散方法和硬件架构
公开(公告)号：US20070002381A1
公开(公告)日：2007-01-04
申请号：US11172151
申请日：2005-06-30
申请人： David Metcalfe , Zhenhuan Wen , Robert Robideau
发明人： David Metcalfe , Zhenhuan Wen , Robert Robideau
IPC分类号： H04N1/40
CPC分类号： H04N1/4052
摘要： A system and method for performing threshold stamping are disclosed. First and second threshold values corresponding to first and second pixels may be retrieved from a threshold memory. A plurality of upscaled threshold values may optionally be computed based on the first threshold value and the second threshold value. An (upscaled) threshold value may be updated at each of one or more first register blocks. A binary pixel value may be computed based at least in part on the first updated threshold value. The first updated threshold value may be updated at each of one or more second register blocks. A downscaled threshold value may optionally be computed based on a plurality of second updated threshold values. The downscaled threshold value or second updated threshold value may be damped in a damping circuit, and the damped threshold value may be stored in the threshold memory.
摘要翻译：公开了一种执行阈值冲压的系统和方法。可以从阈值存储器检索对应于第一和第二像素的第一和第二阈值。可以可选地基于第一阈值和第二阈值来计算多个放大的阈值。可以在一个或多个第一寄存器块的每个处更新一个（放大的）阈值。可以至少部分地基于第一更新阈值来计算二进制像素值。可以在一个或多个第二寄存器块的每一个处更新第一更新阈值。可以可选地基于多个第二更新阈值来计算缩小的阈值。降低阈值或第二更新阈值可以在阻尼电路中衰减，并且阻尼阈值可以存储在阈值存储器中。

27. 发明授权

US06798539B1 Method for moire-free color halftoning using non-orthogonal cluster screens 有权
标题翻译：使用非正交聚类屏幕进行无云色彩半色调的方法
公开(公告)号：US06798539B1
公开(公告)日：2004-09-28
申请号：US09698104
申请日：2000-10-30
申请人： Shen-Ge Wang , Zhigang Fan , Zhenhuan Wen
发明人： Shen-Ge Wang , Zhigang Fan , Zhenhuan Wen
IPC分类号： H04N152
CPC分类号： H04N1/52
摘要： The invention provides methods for using single-cell non-orthogonal cluster screens to satisfy the moiré-free conditions for color halftoning. The invention also provides methods that combine single-cell non-orthogonal cluster screens and line screens for moiré-free color halftoning. Particularly, the selection of these single-cell halftone screens is determined by satisfying moiré-free conditions provided in the respective spatial or frequency equations.
摘要翻译：本发明提供了使用单细胞非正交聚类屏幕来满足无色无色条件进行彩色半色调的方法。本发明还提供了组合单细胞非正交簇屏和用于无莫尔色调的线屏的方法。特别地，通过满足在相应的空间或频率方程式中提供的无摩尔条件来确定这些单电池半色调屏幕的选择。

28. 发明授权

US07847975B2 Converting black to composite black in digital printing 有权
标题翻译：在数码印刷中将黑色转换为复合黑色
公开(公告)号：US07847975B2
公开(公告)日：2010-12-07
申请号：US11824689
申请日：2007-07-02
申请人： Zhenhuan Wen
发明人： Zhenhuan Wen
IPC分类号： G06F15/00
CPC分类号： H04N1/46 , H04N1/6022
摘要： A method of converting black to composite/process black in a digital color print engine. A lightness adjustment is employed for converting input image (O, O, O, Kin) to Ko and initial values of Co, Mo, Yo are set equal to Ko and then converted to C1, M1, Y1, K1 by GCR strategy. Values of Cout, Mout, Yout, Kout are determined by Gray Balance Adjustment for values of C1, M1, Y1, K1 and inputted to the color print engine. The user may disable the conversion to composite black and print black ink/tones if desired. The user may also input different parameters for Lightness Adjustment, Gray Component Replacement and Gray Balance Adjustment.
摘要翻译：在数字彩色打印引擎中将黑色转换为复合/处理黑色的方法。采用亮度调整将输入图像（O，O，O，Kin）转换为Ko，Co，Mo，Yo的初始值设置为Ko，然后通过GCR策略转换为C1，M1，Y1，K1。 Cout，Mout，Yout，Kout的值由C1，M1，Y1，K1的值通过灰度平衡调整确定，并输入到彩色打印引擎。如果需要，用户可以禁用转换为复合黑色并打印黑色墨水/色调。用户还可以为亮度调整，灰度元件更换和灰度平衡调整输入不同的参数。

29. 发明授权

US07630098B2 Dynamic adjustment of raster image processing performance based on colors seen within several runs 失效
标题翻译：基于几个运行中看到的颜色，动态调整光栅图像处理性能
公开(公告)号：US07630098B2
公开(公告)日：2009-12-08
申请号：US11519068
申请日：2006-09-12
申请人： Ramesh Nagarajan , Fritz Ebner , Zhenhuan Wen
发明人： Ramesh Nagarajan , Fritz Ebner , Zhenhuan Wen
IPC分类号： H04N1/52
CPC分类号： H04N1/52 , H04N1/644
摘要： The presently disclosed embodiments are directed to methods and systems for improving the performance of an image processor color to color tile transformation by caching color tiles most recently calculated. A page of a print job is received. One or more color tiles based on colors found in a previous print job are pre-calculated and stored in a memory. A color present in the page is read. The color is compared to one or more pre-calculated color tiles. If the color does not match a pre-calculated color tile, a new color tile for the color is calculated, a pre-calculated color tile is removed from the memory, the new color tile is added to the memory, and the new color tile is used to print the page. If the color does match a pre-calculated color tile stored in the memory, the pre-calculated color tile is used to print the page.
摘要翻译：目前公开的实施例涉及用于通过缓存最近计算出的颜色瓦来改善图像处理器颜色到彩色瓦片变换的性能的方法和系统。接收到打印作业的页面。基于在先前打印作业中找到的颜色的一个或多个彩色图块被预先计算并存储在存储器中。读取页面中存在的颜色。将颜色与一个或多个预先计算的颜色瓷砖进行比较。如果颜色与预先计算的颜色图块不匹配，则计算颜色的新颜色图块，从存储器中移除预先计算的颜色图块，将新的颜色图块添加到存储器中，并且新的颜色图块用于打印页面。如果颜色与存储在存储器中的预先计算的色块匹配，则使用预先计算的颜色图块来打印页面。

30. 发明授权

US07627188B2 Error diffusion method and hardware architecture 有权
标题翻译：错误扩散方法和硬件架构
公开(公告)号：US07627188B2
公开(公告)日：2009-12-01
申请号：US12274842
申请日：2008-11-20
申请人： David Jon Metcalfe , Zhenhuan Wen , Robert Paul Robideau
发明人： David Jon Metcalfe , Zhenhuan Wen , Robert Paul Robideau
IPC分类号： G06K9/36
CPC分类号： H04N1/4052
摘要： A system and method for performing threshold stamping are disclosed. First and second threshold values corresponding to first and second pixels may be retrieved from a threshold memory. A plurality of upscaled threshold values may optionally be computed based on the first threshold value and the second threshold value. An (upscaled) threshold value may be updated at each of one or more first register blocks. A binary pixel value may be computed based at least in part on the first updated threshold value. The first updated threshold value may be updated at each of one or more second register blocks. A downscaled threshold value may optionally be computed based on a plurality of second updated threshold values. The downscaled threshold value or second updated threshold value may be damped in a damping circuit, and the damped threshold value may be stored in the threshold memory.
摘要翻译：公开了一种执行阈值冲压的系统和方法。可以从阈值存储器检索对应于第一和第二像素的第一和第二阈值。可以可选地基于第一阈值和第二阈值来计算多个放大的阈值。可以在一个或多个第一寄存器块的每个处更新一个（放大的）阈值。可以至少部分地基于第一更新阈值来计算二进制像素值。可以在一个或多个第二寄存器块的每一个处更新第一更新阈值。可以可选地基于多个第二更新阈值来计算缩小的阈值。降低阈值或第二更新阈值可以在阻尼电路中衰减，并且阻尼阈值可以存储在阈值存储器中。

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