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1. 发明授权

US6042211A Ink drop volume variance compensation for inkjet printing 失效
标题翻译：喷墨打印的墨滴体积方差补偿
公开(公告)号：US6042211A
公开(公告)日：2000-03-28
申请号：US978040
申请日：1997-11-25
申请人： Kevin R. Hudson , Philip B Cowan , Jay S Gondek
发明人： Kevin R. Hudson , Philip B Cowan , Jay S Gondek
IPC分类号： B41J2/21 , H04N1/50 , H04N1/60 , B41J2/205
CPC分类号： H04N1/6016 , B41J2/2128 , H04N1/502 , H04N1/603
摘要： A printing technique is disclosed which takes into account the actual ink drop volumes of the print cartridges used in an inkjet printer. In one embodiment, each of the print cartridges is tested by the manufacturer, and its actual ink drop volume is determined. This actual ink drop volume, or the variance from the nominal ink drop volume, is encoded on the print cartridge itself using any number of techniques. The host computer, which converts RGB tone values to CMYK ink tone values to be printed, reads the information regarding the ink drop volume and adjusts the CMYK tone values as necessary to compensate for the variance in the ink drop volumes. Accordingly, the printer and host computer will adjust the number of CMYK ink drops printed for a particular pixel position on the medium based upon the actual ink drop volumes for the color print cartridges used in the printer.
摘要翻译：公开了一种打印技术，其考虑了在喷墨打印机中使用的打印墨盒的实际墨滴体积。在一个实施例中，每个打印墨盒由制造商进行测试，并确定其实际的墨滴体积。使用任何数量的技术，这种实际的墨滴体积或者与标称墨滴体积的差异被编码在打印墨盒本身上。将RGB色调值转换为要打印的CMYK墨水色调值的主机读取关于墨滴量的信息，并根据需要调整CMYK色调值，以补偿墨滴体积的变化。因此，打印机和主计算机将基于打印机中使用的彩色墨盒的实际墨滴量来调整为介质上的特定像素位置打印的CMYK墨滴的数量。

2. 发明授权

US06693726B2 Automatic color map conversion 有权
标题翻译：自动色图转换
公开(公告)号：US06693726B2
公开(公告)日：2004-02-17
申请号：US09944641
申请日：2001-08-31
申请人： David Walter Childs , Philip B Cowan , Jay S Gondek , Julie Hong Ouyang
发明人： David Walter Childs , Philip B Cowan , Jay S Gondek , Julie Hong Ouyang
IPC分类号： G06K1500
CPC分类号： H04N1/6022 , H04N1/6058
摘要： A method of converting a source color map from a source print mode to a destination print mode comprises the steps of performing a constant hue clipping process to preserve ink ratios of destination colors to source colors and performing a channel independent clipping process to preserve ink volume.
摘要翻译：将源颜色映射从源打印模式转换为目标打印模式的方法包括以下步骤：执行恒定色调剪切处理以将目的地颜色的油墨比保持为源颜色，并执行不依赖频道的剪切处理以保持墨水量。

3. 发明授权

US07023584B2 Color calibration method and apparatus 有权
标题翻译：颜色校准方法和装置
公开(公告)号：US07023584B2
公开(公告)日：2006-04-04
申请号：US09969682
申请日：2001-10-02
申请人： Philip B Cowan , Kevin R Hudson
发明人： Philip B Cowan , Kevin R Hudson
IPC分类号： B41J1/00 , G06F15/00 , G06K9/00
CPC分类号： H04N1/6033
摘要： A method, includes depositing a first quantity of a first colorant corresponding to a first color value and a second quantity of a second colorant corresponding to a second color value on a region of media, determining a value related to a hue of the region, determining a difference between the value and a predetermined value. In addition, the method includes changing an association between the first color value and a first colorant quantity value, corresponding to the first quantity of the first colorant, according to the difference. An apparatus includes a spectral measurement device configured to generate output corresponding to a spectral content of light reflected from a region on media formed by depositing a first quantity of a first colorant and a second quantity of a second colorant onto the media. In addition, the apparatus includes a memory to store a plurality of color values and a corresponding plurality of first colorant quantity values. Furthermore, the apparatus includes a a processing device coupled to the memory and arranged to receive the output from the spectral measurement device and configured to determine a value related to a hue of the region using the output, configured to determine a difference between the value and a predetermined value, and configured to change an association between the plurality of color values and the plurality of first colorant quantity values according to the difference.
摘要翻译：一种方法包括在介质区域上沉积第一量对应于第一颜色值的第一着色剂和对应于第二颜色值的第二着色剂，确定与该区域的色相相关的值，确定该值与预定值之间的差。此外，该方法包括根据该差异来改变与第一着色剂的第一量对应的第一颜色值和第一着色剂量值之间的关联。一种装置包括光谱测量装置，其被配置为产生对应于从通过将第一量的第一着色剂和第二量的第二着色剂沉积到介质上而形成的介质上的区域的光的光谱含量的光谱含量。此外，该装置包括存储多个颜色值的存储器和相应的多个第一着色剂量值。此外，该装置包括耦合到存储器并被配置为接收来自频谱测量装置的输出并被配置为使用该输出来确定与该区域的色相相关的值的处理装置，该值被配置为确定该值与一个并且被配置为根据差异来改变多个颜色值和多个第一着色剂量值之间的关联。

4. 发明授权

US07184175B2 System and method for color calibration 失效
标题翻译：颜色校准系统和方法
公开(公告)号：US07184175B2
公开(公告)日：2007-02-27
申请号：US10231572
申请日：2002-08-29
申请人： Yifeng Wu , Philip B Cowan , David Kinkley
发明人： Yifeng Wu , Philip B Cowan , David Kinkley
IPC分类号： H04N1/50 , H04N1/60
CPC分类号： H04N1/6033
摘要： A method of detecting color miscalibration in a color output device. Accordingly, the method includes providing a calibration mask having a target color and a plurality of windows, and outputting a test array that includes a plurality of test samples arranged for viewing through the windows of the calibration mask, wherein each test sample has an associated test color. The windows may be at least partially aligned with at least one of the test samples, and the target color of the calibration mask may be compared to the test colors of the framed test samples.
摘要翻译：一种检测彩色输出装置中色彩错误的方法。因此，该方法包括提供具有目标颜色和多个窗口的校准掩模，并且输出包括多个测试样本的测试阵列，该测试阵列布置成通过校准掩模的窗口进行观察，其中每个测试样本具有相关测试颜色。窗口可以至少部分地与至少一个测试样本对准，并且校准掩模的目标颜色可以与框架测试样本的测试颜色进行比较。

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