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1. 发明授权

US06178008B1 Constructing device-state tables for inkjet printing 失效
标题翻译：构建喷墨打印的设备状态表
公开(公告)号：US06178008B1
公开(公告)日：2001-01-23
申请号：US08960766
申请日：1997-10-30
申请人： Francis E. Bockman , Guo Li
发明人： Francis E. Bockman , Guo Li
IPC分类号： G06K1500
CPC分类号： H04N1/52 , G06K15/102 , G06K2215/0094
摘要： An automatic system forms color LUTs (or LUT-forming data) for automated reference—typically in error diffusion (ED). A first aspect is for printers with six or more colorants. Three ramps, for different basic colorants, are photometrically measured; mainly just those results yield a transform from 3D color to system colorants. In a second aspect, some device-state candidate colors are chosen for black replacement. In a variant the choice is subject to (1) maintaining some chromatic colorant in each pixel with black; or (2) modifying use patterns to avoid alternative use of composite black vs. black; or (3) adjustments to allow for composite nonequivalence to black. A related third aspect allows replacement only if there is a given minimum amount of composite. In a fourth aspect, candidate states are dropped that have small changes in number of quanta per pixel, or no companion light colorant quantum with each dark one, best eliminating those with too many quanta of each or all colorants. In a related fifth aspect, one state is assigned to each major entry based on, at a gamut surface except at the dark end, favoring states nearer the surface over those nearer a desired major entry; and at the neutral axis, especially its dark end, favoring real black. Other assigning is best done by entry nearness. In a sixth aspect preferably 1D LUTs are formed for finding major entries based on an input-color spec, not monotonic in entry assignment to indices; precomputed ED distributions attach to indices. In a seventh aspect a state LUT formed to access states based on input specs is used to print nominal neutral colors and measured results used to adjust access. In an eighth facet related to the first, the ramps correspond to fundamental combinations of single colorants, e. g. secondaries.
摘要翻译：自动系统形成用于自动参考的颜色LUT（或LUT形成数据） - 通常在误差扩散（ED）中。第一方面是用于具有六种或更多种着色剂的打印机。对于不同的基础着色剂的三个斜坡进行光度测量; 主要只是这些结果产生了从3D颜色到系统着色剂的转换。在第二方面，一些设备状态候选颜色被选择用于黑色替换。在一个变型中，选择受（1）在每个像素中保持黑色的一些彩色着色剂; 或（2）修改使用模式以避免复合黑与黑的替代使用; 或（3）调整以允许复合非等价到黑色。相关的第三方面允许仅在给定最小量的复合材料时进行替换。在第四方面，丢弃具有每像素的量子数量的小变化的候选状态，或者每个黑色量子的伴随光着色剂量子化，最好消除具有每个或所有着色剂的量子太多的候选状态。在相关的第五方面中，除了在黑暗端以外的色域表面，一个状态被分配给每个主入口，有利于靠近表面的状态比靠近期望的主要条目更近的状态; 在中性轴上，特别是它的黑暗末端，有利于真正的黑色。其他分配最好通过进入附近进行。在第六方面，优选地，1D LUT被形成用于基于输入颜色规范找到主要条目，在对索引的条目分配中不是单调的; 预先计算的ED分发附加到索引。在第七方面，用于基于输入规格访问状态的状态LUT用于打印用于调整访问的标称中性色和测量结果。在与第一个相关的第八个方面，斜坡对应于单一着色剂的基本组合，例如， G。次要

2. 发明授权

US06081344A Device state error diffusion technique for halftoning 失效
标题翻译：用于半色调的器件状态误差扩散技术
公开(公告)号：US06081344A
公开(公告)日：2000-06-27
申请号：US960779
申请日：1997-10-30
申请人： Francis E. Bockman , Guo Li
发明人： Francis E. Bockman , Guo Li
IPC分类号： H04N1/52 , G06F15/00
CPC分类号： H04N1/52
摘要： A halftoning technique is disclosed which uses look-up tables to identify a combination of color ink drops (device states) to be printed by an inkjet printer. The look-up tables are indexed by a particular color to be reproduced. An error is also output by the look-up tables reflecting the difference between the indexing tone level and the printed color spot. The error is applied in a halftoning process to neighboring pixels. A plurality of look-up tables is used, and one of the look-up tables is selected for a particular medium (e.g., glossy paper, plain paper) to be printed upon. In this manner, the number and combination of ink drops can be optimize for a particular type of medium. In one embodiment, six different color inks are used by the printer.
摘要翻译：公开了一种半色调技术，其使用查找表来识别由喷墨打印机打印的彩色墨滴（装置状态）的组合。查找表由要重现的特定颜色索引。查询表也会输出错误，反映了索引音级与打印色点之间的差异。该错误在半色调处理中应用于相邻像素。使用多个查找表，并且为要打印的特定介质（例如光面纸，普通纸）选择一个查找表。以这种方式，可以针对特定类型的介质优化墨滴的数量和组合。在一个实施例中，打印机使用六种不同颜色的油墨。

3. 发明授权

US6030066A Method and apparatus for ink jet printer color balance calibration and correction 失效
标题翻译：喷墨打印机颜色平衡校准和校正的方法和装置
公开(公告)号：US6030066A
公开(公告)日：2000-02-29
申请号：US961730
申请日：1997-10-31
申请人： Guo Li , Francis E. Bockman , Joseph M. Torgerson
发明人： Guo Li , Francis E. Bockman , Joseph M. Torgerson
IPC分类号： B41J29/393 , H04N1/60
CPC分类号： B41J29/393 , H04N1/6033
摘要： A method, for adjusting the color balance of printheads in a color printer, utilizes a matrix of image data including a reference image data set for a reference image and a plurality of color modified image data sets for plural color modified images. The reference image data set includes in-balance component color data values and each of the color-modified image data sets include out-of-balance component color values. A printer is controlled to operate the printheads to print the reference image and each of the color modified images at pre-determined locations on a media sheet in accord with the matrix of image data. If the printheads are not properly adjusted, the printed reference image and each of the color modified images appear positionally offset on the media sheet. A user, upon examining the media sheet selects one image on the media sheet as the reference image (e.g., the image which exhibits best black/white characteristics and contrast). In response to that selection, control signals are altered to the printheads in accord with component color values that are initially established for the matrix position that is now occupied by the image selected as the reference image. Such component color values are thereafter used to correct for subsequent printing.
摘要翻译：一种用于调整彩色打印机中的打印头的色彩平衡的方法利用了包括用于参考图像的参考图像数据集和多个颜色修正图像数据组的图像数据矩阵，用于多个颜色修正图像。参考图像数据组包括平衡分量颜色数据值，并且每个颜色修正图像数据组包括不平衡分量颜色值。控制打印机以操作打印头以根据图像数据的矩阵将参考图像和每个颜色修改的图像打印在介质片上的预定位置。如果打印头未正确调整，则打印的参考图像和每个颜色修改的图像在介质页上显示为位置偏移。用户在检查介质页时选择介质页上的一个图像作为参考图像（例如，显示最佳黑/白特征和对比度的图像）。响应于该选择，控制信号根据最初为被选作参考图像的图像所占据的矩阵位置最初建立的分量颜色值而改变为打印头。此后使用这种组分颜色值来校正随后的打印。

4. 发明授权

US5381349A System for calibrating a color display to enable color-matching 失效
标题翻译：用于校准彩色显示器以实现色彩匹配的系统
公开(公告)号：US5381349A
公开(公告)日：1995-01-10
申请号：US084375
申请日：1993-06-29
申请人： Kirt A. Winter , Francis E. Bockman
发明人： Kirt A. Winter , Francis E. Bockman
IPC分类号： H04N1/60 , H04N1/62 , H04N1/46
CPC分类号： H04N1/6011 , H04N1/622
摘要： A color display screen displays a calibration color patch and a comparison color patch. The calibration color patch manifests a calibration color of a predetermined intensity, and the comparison color patch manifests a comparison color derived from a user determined input value. The system is controlled by a processor and is responsive to a user's indication of a perceived color match between a calibration color patch and a comparison color patch, to determine a transfer function that enables conversion of a value that generated the comparison color to a value assigned to the calibration color. The processor is further responsive to further perceived color matches of first and second color patches with first and second different intensity calibration color patches, respectively, to determine if first and second transfer functions determined for the first and second comparisons are within a transfer function threshold value of each other. If they are, the transfer functions are averaged and employed to calibrate colors transmitted to an attached color printer. If they are not within the transfer function threshold value, an additional comparison test is made. If the resulting transfer function is not within the threshold value, a default color transfer function is substituted.
摘要翻译：彩色显示屏幕显示校准色标和比较色块。校准色标表示预定强度的校准颜色，并且比较色块显示从用户确定的输入值导出的比较颜色。系统由处理器控制，并且响应于用户对校准色块和比较色块之间感知到的颜色匹配的指示，以确定能够将生成比较颜色的值转换为分配值的传递函数校准颜色。处理器进一步响应于分别具有第一和第二不同强度校准色标的第一和第二色块的进一步感知到的颜色匹配，以确定为第一和第二比较确定的第一和第二传递函数是否在传递函数阈值内的对方如果是，传送函数被平均并用于校准传输到附着的彩色打印机的颜色。如果它们不在传递函数阈值内，则进行另外的比较测试。如果所得到的传递函数不在阈值内，则替换默认颜色传递函数。

5. 发明授权

US06179407B2 Multi-pass inkjet printer system and method of using same 有权
标题翻译：多通喷墨打印机系统及其使用方法
公开(公告)号：US06179407B2
公开(公告)日：2001-01-30
申请号：US09197291
申请日：1998-11-20
申请人： Francis E. Bockman
发明人： Francis E. Bockman
IPC分类号： B41J2145
CPC分类号： G06K15/107 , B41J2/2132 , G06K2215/0094
摘要： An inkjet color printer accesses image data to be printed on a pixel by pixel basis and determines the Z number of drops of different color inks to distribute per pixel over a predetermined number of passes in a multi-pass print mode of operation. Predetermined constraints relative to the maximum number of drops of a single ink color per pixel and per pass permit maskless drop ordering and an even distribution of ink over time per pixel.
摘要翻译：喷墨彩色打印机以逐个像素为单位访问要打印的图像数据，并且在多遍打印操作模式中确定不同颜色墨水的Z数量以每像素分布在预定数量的遍数上。相对于每个像素和每次通过的单个墨水颜色的最大滴数的预定约束允许无掩模的下落顺序以及每像素随时间均匀分布墨水。

6. 发明授权

US5450532A Cache memory system for a color ink jet printer 失效
标题翻译：用于彩色喷墨打印机的高速缓存存储器系统
公开(公告)号：US5450532A
公开(公告)日：1995-09-12
申请号：US55073
申请日：1993-04-29
申请人： Francis E. Bockman , Kirt A. Winter
发明人： Francis E. Bockman , Kirt A. Winter
IPC分类号： G06K15/00 , G06F15/00
CPC分类号： G06K15/00 , G06K2215/0094
摘要： A color printer receives P, N-bit values indicating a computer generated color to be printed, there being 2.sup.NP possible combinations of bits in the P, N-bit color values. Each N-bit value has a least significant bit (LSB). Upon receiving P, N-bit color values, the color printer creates an address from P combined multiple-bit segments of each of the received N-bit values, each multiple bit segment excluding at least a LSB of each N-bit value. The color printer includes a cache memory having substantially less addresses than 2.sup.NP, each cache address including first and second entries, a first entry being P values indicative of a computer generated color and a second entry being P values usable by the color printer to reproduce the first entry. A processor determines if there is a match at an address created from a received computer color value between a first entry and the received computer color value, the match disregarding an LSB of each N-bit value comprising the first entry at the address. The processor is responsive to a determined match to access the second entry at the address and to employ the second entry to control the color printer. Exclusion of the LSB's in determination of the presence of a match enables a substantially greater probability of finding such a match in the cache memory.
摘要翻译：彩色打印机接收P，N位值，表示要打印的计算机生成的颜色，存在P，N位颜色值中2NP可能的位组合。每个N位值具有最低有效位（LSB）。在接收到P，N位颜色值时，彩色打印机从接收的每个N位值的P组合多位段创建一个地址，每个多位段除了每个N位值的至少LSB。彩色打印机包括具有比2NP少得多的地址的高速缓冲存储器，每个高速缓存地址包括第一条目和第二条目，第一条目是指示计算机生成的颜色的P值，第二条目是彩色打印机可用的P值，第一次入场处理器确定在从第一条目和接收到的计算机颜色值之间的接收到的计算机颜色值创建的地址是否存在匹配，匹配忽略包括地址处的第一条目的每个N位值的LSB。处理器响应于确定的匹配以访问地址处的第二条目并且使用第二条目来控制彩色打印机。在确定匹配的存在时排除LSB使得能够在高速缓冲存储器中找到这样的匹配的可能性更大。

7. 发明授权

US5510910A Printing with full printer color gamut, through use of gamut superposition in a common perceptual space 失效
标题翻译：用全彩色打印色域，通过在常见的感知空间中使用色域叠加
公开(公告)号：US5510910A
公开(公告)日：1996-04-23
申请号：US238118
申请日：1994-05-03
申请人： Francis E. Bockman , Paul H. Dillinger
发明人： Francis E. Bockman , Paul H. Dillinger
IPC分类号： H04N1/46 , H04N1/52 , H04N1/60
CPC分类号： H04N1/52 , H04N1/60 , H04N1/6016 , H04N1/6022 , H04N1/6058
摘要： A technique of merging or "matching" hue pages of a CRT and printer is used to map CRT control signals through a common perceptual space into printer control signals. The system (1) receives a color specification expressed as CRT control signals, (2) locates the specified color within the CRT perceptual gamut, (3) normalizes the two gamuts in perceptual space, (4) determines the relative position of the same color in the normalized CRT gamut, (5) declares that position to be the relative position of that color in the normalized printer gamut as well, (6) unfolds the normalization to determine the absolute position of the color in the actual printer gamut, (7) expresses that position in terms of printer-control signals, and then (8) applies those signals to the printer, to print the specified color. As a result that color, and color changes, specified in terms of CRT control signals are tracked in terms of both printer control signals and actual printer performance. The two device gamuts are in effect mapped to each other; the full gamuts of both are in effect merged. This new mapping preserves relative positions in color space--and thus the capability of the printer to reproduce distinctions between colors seen on the CRT that appear very closely similar. Such discrimination between colors very adjacent in color space is supported nearly throughout gamuts of both devices, even very near the lightness extrema and maximum-saturation point on a hue page. To facilitate processing, the normalized characterizations for the CRT and printer gamuts (taken as triangular) are approximated for each of 360 hue pages by single-point data representing lightness and chroma at the saturation point--or normalized lightness at that point--plus two common lightness extrema for the gamut solid.
摘要翻译：将CRT和打印机的合并或“匹配”色调页面的技术用于将CRT控制信号通过公共感知空间映射到打印机控制信号中。系统（1）接收以CRT控制信号表示的颜色规格，（2）将指定颜色定位在CRT感知色域内，（3）在感知空间中归一化两个色域，（4）确定相同颜色的相对位置在归一化的CRT色域中，（5）也将该颜色的位置声明为归一化打印机色域中的该颜色的相对位置，（6）展开归一化以确定实际打印机色域中的颜色的绝对位置，（7 ）表示打印机控制信号的位置，然后（8）将这些信号应用于打印机，以打印指定的颜色。因此，根据打印机控制信号和实际打印机性能来跟踪CRT控制信号方面的颜色和颜色变化。两个设备色域实际映射到对方; 两者的全部颜色都被合并。这个新映射保留了颜色空间中的相对位置，因此打印机能够再现出现在非常接近相似的CRT上看到的颜色之间的区别。在色彩空间非常相邻的颜色之间的这种区分几乎遍及两个装置的色域，甚至在色相页上的亮度极值和最大饱和度点附近都被支持。为了便于处理，CRT和打印机色域（被视为三角形）的归一化表征通过单点数据近似于每个360色调页面，该点数据表示在该点处的饱和点或标准化亮度处的亮度和色度 - 加上两个常见的亮度极值为色域固体。

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