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1. 发明授权

US06687023B1 Data processing system and method for producing shifted-element halftone screens 失效
标题翻译：用于生成移位元件半色调网的数据处理系统和方法
公开(公告)号：US06687023B1
公开(公告)日：2004-02-03
申请号：US09550780
申请日：2000-04-17
申请人： Danielle Dittrich , Larry Ernst , Gerhard Robert Thompson , Chai Wah Wu
发明人： Danielle Dittrich , Larry Ernst , Gerhard Robert Thompson , Chai Wah Wu
IPC分类号： H04N1403
CPC分类号： H04N1/4055
摘要： A data processing system and method are described for generating a halftone screened image from an input image. A first threshold matrix is generated which, when utilized to halftone a solid gray input image, generates a first halftoned output image which is a plurality of generally solid vertical lines. The first threshold matrix includes a plurality of matrix elements arranged in a plurality of rows and a plurality of columns. A plurality of groups of the matrix elements are shifted within the first threshold matrix to create a second threshold matrix which, when utilized to halftone the solid gray input image, generates a second halftoned output image which is a checkerboard type pattern of alternating black or white blocks. In one embodiment, groups of the plurality of the rows are shifted horizontally over by at least one adjacent column to generate the second matrix.
摘要翻译：描述了从输入图像生成半色调筛选图像的数据处理系统和方法。产生第一阈值矩阵，当用于将实灰灰色输入图像进行半色调时，生成第一半色调输出图像，该第一半色调输出图像是多个大体上实线的垂直线。第一阈值矩阵包括排列成多行和多列的多个矩阵元素。多个矩阵元素组在第一阈值矩阵内移位以产生第二阈值矩阵，当第二阈值矩阵用于对实灰灰色输入图像进行半色调时，产生第二半色调输出图像，其是交替的黑色或白色的棋盘型图案块。在一个实施例中，多行中的组被水平移动至少一个相邻的列以产生第二矩阵。

2. 发明授权

US09621762B2 Halftone calibration mechanism employing an ink model 有权
公开(公告)号：US09621762B2
公开(公告)日：2017-04-11
申请号：US13346231
申请日：2012-01-09
申请人： Kartheek Chandu , Larry Ernst , Sreenath Rao Vantaram , Mikel J. Stanich , Chai Wah Wu
发明人： Kartheek Chandu , Larry Ernst , Sreenath Rao Vantaram , Mikel J. Stanich , Chai Wah Wu
IPC分类号： G06K15/00 , H04N1/405 , H04N1/407
CPC分类号： H04N1/405 , H04N1/407
摘要： A printing system is disclosed. The printing system includes a halftone calibration system that receives one or more un-calibrated halftones, generates one or more calibrated halftones using an ink model from the one or more un-calibrated halftones, analyzes a printed calibration screen of the one or more calibrated halftones, and performs a halftone calibration.

3. 发明申请

US20130176600A1 Halftone Calibration Mechanism Employing an Ink Model 有权
标题翻译：使用墨水模型的半色调校准机制
公开(公告)号：US20130176600A1
公开(公告)日：2013-07-11
申请号：US13346231
申请日：2012-01-09
申请人： Kartheek Chandu , Larry Ernst , Sreenath Rao Vantaram , Mikel J. Stanich , Chai Wah Wu
发明人： Kartheek Chandu , Larry Ernst , Sreenath Rao Vantaram , Mikel J. Stanich , Chai Wah Wu
IPC分类号： H04N1/405
CPC分类号： H04N1/405 , H04N1/407
摘要： A printing system is disclosed. The printing system includes a halftone calibration system that receives one or more un-calibrated halftones, generates one or more calibrated halftones using an ink model from the one or more un-calibrated halftones, analyzes a printed calibration screen of the one or more calibrated halftones, and performs a halftone calibration.
摘要翻译：公开了一种打印系统。印刷系统包括半色调校准系统，其接收一个或多个未校准的半色调，使用来自一个或多个未校准的半色调的墨水模型生成一个或多个校准的半色调，分析一个或多个校准半色调的印刷校准屏幕，并执行半色调校准。

4. 发明授权

US08506046B2 Inkjet nozzle flushing mechanism 有权
公开(公告)号：US08506046B2
公开(公告)日：2013-08-13
申请号：US13242577
申请日：2011-09-23
申请人： Kartheek Chandu , Larry Ernst
发明人： Kartheek Chandu , Larry Ernst
IPC分类号： B41J2/165
CPC分类号： B41J2/2132 , B41J2/1652 , B41J2002/16529 , G06K15/102
摘要： A method is disclosed. The method includes receiving print job data, rasterizing the print job data to generate image data for each page of the print job data to be printed, calculating a coverage per unit area for two or more color planes of each page of the image data and calculating a flushing mask to flush nozzles of the inkjet print head.

5. 发明申请

US20060215186A1 Method and system for scaling with dot gain control 有权
公开(公告)号：US20060215186A1
公开(公告)日：2006-09-28
申请号：US11085161
申请日：2005-03-22
申请人： Larry Ernst , Hong Li , Yue Qiao , Mikel Stanich , Chai Wu
发明人： Larry Ernst , Hong Li , Yue Qiao , Mikel Stanich , Chai Wu
IPC分类号： G06K15/02
CPC分类号： G06K15/02
摘要： A method (and system) for changing spatial resolution of an image includes systematically creating an image scaling look-up table including at least one pixel replacement pattern and applying a scaling algorithm to modify the image using the image scaling look-up table, thereby allowing a user to scale binary images with easy control of dot gain, output bit depth and other printer parameters.

6. 发明授权

US11077674B2 Dual pass uniformity printing compensation mechanism 有权
公开(公告)号：US11077674B2
公开(公告)日：2021-08-03
申请号：US16557397
申请日：2019-08-30
申请人： Mikel F. Stanich , Nikita Gurudath , Larry Ernst , William E. Manchester
发明人： Mikel F. Stanich , Nikita Gurudath , Larry Ernst , William E. Manchester
IPC分类号： B41J2/52 , H04N1/405 , G06K15/02 , H04N1/60 , G06K15/10
摘要： A printing system is disclosed. The printing system includes a printer to print image data to a medium. The printer includes a first pass channel including a first set of pel forming elements to print a first component of the image data and a second pass channel including a second set of pel forming elements to print a second component of the image data, wherein the first component of the image data and the second component of the image data occupy a same region on the print medium. The printing system also includes a print controller to perform uniformity compensation based on a combined compensation of the first pass channel and the second pass channel.

7. 发明申请

US20130286074A1 Inkjet Nozzle Flushing Mechanism 有权
公开(公告)号：US20130286074A1
公开(公告)日：2013-10-31
申请号：US13935660
申请日：2013-07-05
申请人： Kartheek Chandu , Larry Ernst
发明人： Kartheek Chandu , Larry Ernst
IPC分类号： B41J2/07 , B41J2/165
CPC分类号： B41J2/2132 , B41J2/1652 , B41J2002/16529 , G06K15/102
摘要： A method is disclosed. The method includes receiving print job data, rasterizing the print job data to generate image data for each page of the print job data to be printed, calculating a coverage per unit area for two or more color planes of each page of the image data and calculating a flushing mask to flush nozzles of the inkjet print head.

8. 发明申请

US20120229537A1 Defective Jet Detection Mechanism 审中-公开
标题翻译：喷射检测机制不良
公开(公告)号：US20120229537A1
公开(公告)日：2012-09-13
申请号：US13042857
申请日：2011-03-08
申请人： Larry Ernst , George Promis
发明人： Larry Ernst , George Promis
IPC分类号： B41J29/38
CPC分类号： B41J2/2146
摘要： A method is disclosed. The method includes analyzing an image of a flush line pattern applied to a print medium to extract print quality information for an ink jet print head.
摘要翻译：公开了一种方法。该方法包括分析应用于打印介质的冲洗线图案的图像以提取喷墨打印头的打印质量信息。

9. 发明授权

US09061518B2 Inkjet nozzle flushing mechanism 有权
标题翻译：喷墨喷嘴冲洗机构
公开(公告)号：US09061518B2
公开(公告)日：2015-06-23
申请号：US14524591
申请日：2014-10-27
申请人： Kartheek Chandu , Larry Ernst
发明人： Kartheek Chandu , Larry Ernst
IPC分类号： B41J2/165 , B41J2/21
CPC分类号： B41J2/2132 , B41J2/1652 , B41J2002/16529 , G06K15/102
摘要： A method is disclosed. The method includes receiving print job data, rasterizing the print job data to generate image data for each page of the print job data to be printed, calculating a coverage per unit area for two or more color planes of each page of the image data and calculating a flushing mask to flush nozzles of the inkjet print head.
摘要翻译：公开了一种方法。该方法包括接收打印作业数据，光栅化打印作业数据以生成要打印的打印作业数据的每一页的图像数据，计算图像数据的每一页的两个或更多个彩色平面的每单位面积的覆盖范围并计算用于冲洗喷墨打印头的喷嘴的冲洗面罩。

10. 发明授权

US08625161B2 Multibit digital halftoning, indexing 2D and 3D lookup tables 有权
标题翻译：多位数字半色调，索引2D和3D查找表
公开(公告)号：US08625161B2
公开(公告)日：2014-01-07
申请号：US12621614
申请日：2009-11-19
申请人： Larry Ernst , Tadanobu Inoue , Mikel Stanich , Chai W. Wu
发明人： Larry Ernst , Tadanobu Inoue , Mikel Stanich , Chai W. Wu
IPC分类号： H04N1/405 , H04N1/40
CPC分类号： H04N1/40087 , H04N1/405
摘要： Digital halftoning processes for producing a halftone image include, for each pixel in the image: indexing a two-dimensional look up table using a position of the pixel, identifying a threshold value for the pixel from the two-dimensional look up table, creating an index that indexes a three-dimensional lookup table using the threshold value and the position of the pixel, and obtaining an output value for the pixel from the three-dimensional look up table via the index. The digital halftoning processes also produce a halftone representation of the image from output values for corresponding pixels.
摘要翻译：用于产生半色调图像的数字半色调处理包括对于图像中的每个像素：使用像素的位置对二维查找表进行索引，从二维查找表中识别像素的阈值，创建一个索引，其使用阈值和像素的位置对三维查找表进行索引，并且经由索引从三维查找表获得用于像素的输出值。数字半色调处理还从相应像素的输出值产生图像的半色调表示。

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