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公开(公告)号：US06744531B1
公开(公告)日：2004-06-01
申请号：US09221996
申请日：1998-12-29
申请人： Lingappa K. Mestha , Eric Jackson , Yao Rong Wang , Martin E. Banton , Peter A. Crean , Steven J. Harrington , Edward J. Solcz
发明人： Lingappa K. Mestha , Eric Jackson , Yao Rong Wang , Martin E. Banton , Peter A. Crean , Steven J. Harrington , Edward J. Solcz
IPC分类号： G06F1500
CPC分类号： H04N1/6022
摘要： An apparatus and method that provide consistent output across a plurality of different hard copy output devices which may be included in a system comprising an image data source and a hard copy output device. The image data source supplies image data to a printable image data adjusting apparatus. The image data supplied may be in a device-dependent color space or a device-independent color space. If the image data is in a device-dependent color space, the printable image data adjusting apparatus first converts the image data into device-independent image data and stores it in memory as target image data. If the image data is already device-independent image data, the image data are simply stored in the memory of the printable image data adjusting apparatus as target image data. The printable image data adjusting apparatus then uses the target image data to generate printable image data. The hard copy output device uses the printable image data to generate a hard copy image. The hard copy image is then passed within the optical field of a sensor that detects device-independent image data values of the hard copy image. The detected device-independent image data values are then compared against the target image data to generate color adjustment factors. The color adjustment factors are then used to produce a hard copy image having detected device-independent image data values that more closely represent the target image data. The apparatus and method may be implemented in real-time with or without human intervention.
摘要翻译： 提供跨多个不同硬拷贝输出设备的一致输出的装置和方法，其可包括在包括图像数据源和硬拷贝输出设备的系统中。 图像数据源将图像数据提供给可打印图像数据调整装置。 所提供的图像数据可以在依赖于设备的色彩空间或与设备无关的色彩空间中。 如果图像数据处于依赖于设备的色彩空间中，则可打印图像数据调整装置首先将图像数据转换为与设备无关的图像数据，并将其存储在存储器中作为目标图像数据。 如果图像数据已经是与设备无关的图像数据，则将图像数据简单地存储在可打印图像数据调整装置的存储器中作为目标图像数据。 然后，可打印图像数据调整装置使用目标图像数据来生成可打印的图像数据。 硬拷贝输出设备使用可打印的图像数据来生成硬拷贝图像。 然后在检测硬拷贝图像的设备无关图像数据值的传感器的光学场内传递硬拷贝图像。 然后将检测到的与设备无关的图像数据值与目标图像数据进行比较以产生颜色调整因子。 然后使用颜色调节因子来产生具有更接近地表示目标图像数据的检测到的与设备无关的图像数据值的硬拷贝图像。 该装置和方法可以在有或没有人为干预的情况下实时地实现。
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2.发明授权公开(公告)号：US07307752B1
公开(公告)日：2007-12-11
申请号：US09566291
申请日：2000-05-05
申请人： Lingappa K. Mestha , Peter A. Crean , Martin S. Maltz , Robert J. Rolleston , Yao Rong Wang , Eric Jackson , Thyagarajan Balasubramanian
发明人： Lingappa K. Mestha , Peter A. Crean , Martin S. Maltz , Robert J. Rolleston , Yao Rong Wang , Eric Jackson , Thyagarajan Balasubramanian
CPC分类号： G06F15/00 , H04N1/4078 , H04N1/6027 , H04N1/6033
摘要： A color marking device including a control system for calibration of the device based upon dynamic color balance control of an output image. The system comprises a front end converter for converting an input signal representative of a target image comprising a preselected color into a device-dependent control signal in accordance with a device TRC, a color marking device for outputting an output image in response to the control signal, a sensor for measuring a parameter from the output image representative of a color of the output image, and, a point-wise controller for comparing the parameter with a corresponding parameter from the target image and constructing adjusted controlled points for the device TRC when the measured parameter and the corresponding parameter vary by a preselected value, a color balance controller for constructing an adjusted device TRC from the controlled points, whereby subsequently generated output images are output with the adjusted device TRC and, more accurately represent target input images.
摘要翻译： 一种彩色标记装置，包括基于输出图像的动态色彩平衡控制来校准装置的控制系统。 该系统包括：前端转换器，用于根据设备TRC将表示包括预选颜色的目标图像的输入信号转换成依赖于设备的控制信号;响应于控制信号输出输出图像的颜色标记装置 ，用于从表示输出图像的颜色的输出图像中测量参数的传感器，以及用于将参数与来自目标图像的相应参数进行比较的逐点控制器，并且当所述设备TRC的调整的控制点在 测量参数和相应的参数由预选值变化，用于从受控点构建调整的设备TRC的色平衡控制器，由此随后生成的输出图像被调整的设备TRC输出，并且更精确地表示目标输入图像。
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公开(公告)号：US5963244A
公开(公告)日：1999-10-05
申请号：US754561
申请日：1996-11-21
申请人： Lingappa K. Mestha , Yao Rong Wang , Sohail A. Dianat , Pramod P. Khargonekar , Daniel E. Koditschek , Eric Jackson , Tracy E. Thieret
发明人： Lingappa K. Mestha , Yao Rong Wang , Sohail A. Dianat , Pramod P. Khargonekar , Daniel E. Koditschek , Eric Jackson , Tracy E. Thieret
CPC分类号： B41J2/471 , H04N1/4078
摘要： A method of machine control including the recreation of a tone reproduction curve by providing a look up table. The look up table incorporates a covariance matrix of elements containing n tone reproduction samples. A matrix multiplier responds to sensed developed patch samples and to the look up table to reproduce a complete tone reproduction curve. A control reacts to the reproduced tone reproduction curve to adjust machine quality.
摘要翻译： 一种机器控制的方法，包括通过提供查找表来重建色调再现曲线。 查找表包含包含n个色调再现样本的元素的协方差矩阵。 矩阵乘法器响应于感测到的显影补片样本和查找表，以再现完整的色调再现曲线。 控制器对再现的色调再现曲线进行反应以调节机器质量。
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公开(公告)号：US5749020A
公开(公告)日：1998-05-05
申请号：US754571
申请日：1996-11-21
申请人： Lingappa K. Mestha , Yao Rong Wang , Sohail A. Dianat , Pramod P. Khargonekar , Daniel E. Koditschek , Eric Jackson , Tracy E. Thieret
发明人： Lingappa K. Mestha , Yao Rong Wang , Sohail A. Dianat , Pramod P. Khargonekar , Daniel E. Koditschek , Eric Jackson , Tracy E. Thieret
CPC分类号： G03G15/5041 , G03G2215/00042
摘要： Fundamental machine functions such as the Tone Reproduction Curve need to be divided into regions of smaller units so that each unit can be interrelated to some aspects of the internal machine process. A first step toward that is by decomposing measured TRC in terms of what are known as "orthogonal basis functions". Two significant applications for orthogonal basis functions may be extensive use in color controls to maintain color consistency for every page, every time and all the time. The use of basis functions might also lead to a new soft sensor for use in certain machines.
摘要翻译： 基本机器功能，如音调再现曲线需要分为较小单位的区域，以便每个单元可以与内部机器过程的某些方面相互关联。 第一步是通过将所谓的“正交基函数”分解为测量的TRC。 正交基函数的两个重要应用可能在颜色控制中广泛使用，以保持每一页，每一次和所有时间的颜色一致性。 基础功能的使用也可能导致用于某些机器的新型软传感器。
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5.发明授权Color gamut mapping for accurately mapping certain critical colors and corresponding transforming of nearby colors and enhancing global smoothness 有权色域映射，用于准确地映射某些关键颜色和相应的附近颜色变换，增强全局平滑度公开(公告)号：US06625306B1
公开(公告)日：2003-09-23
申请号：US09455761
申请日：1999-12-07
IPC分类号： G06K900
CPC分类号： H04N1/603 , H04N1/6058
摘要： A mapping system for converting an input signal value to an output value wherein certain outputs are predetermined to be critical. An engine for converting input values to output values is associated with an input value transforming system wherein certain input values corresponding to the critical output values are transformed prior to input to the engine for adjusting the input value so that the engine generates a particularly desired output. The transforming comprises selecting a set of basis functions for effecting a warping of input values near the input value corresponding to the critical output value. The basis functions determine the extent and gradient of input value adjustment for nearby values to the critical value. The basis functions are included within an objective function defining the purpose of the system and the functions are solved to generate the desired adjusted input value. The system has particular applicability to color gamut mapping in a print system wherein output color needs to be accurately printed and colors nearby the critical color can be generated with minimal image artifacts.
摘要翻译： 一种映射系统，用于将输入信号值转换为预定为关键的某些输出的输出值。 用于将输入值转换为输出值的引擎与输入值转换系统相关联，其中对应于临界输出值的某些输入值在输入到引擎之前被变换以用于调整输入值，使得发动机产生特别期望的输出。 变换包括选择一组基函数，以实现与临界输出值对应的输入值附近的输入值的变形。 基础函数确定临近值附近值的输入值调整的范围和梯度。 基函数包括在定义系统目的的目标函数中，并且解决函数以产生期望的调整输入值。 该系统特别适用于打印系统中的色域映射，其中输出颜色需要被精确地打印，并且可以以最少的图像伪影来生成临界颜色附近的颜色。
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6.发明授权公开(公告)号：US06636628B1
公开(公告)日：2003-10-21
申请号：US09487587
申请日：2000-01-19
IPC分类号： G06K900
CPC分类号： H04N1/603
摘要： This invention provides an iteratively clustered interpolation (ICI) algorithm for use with irregularly sampled color data to develop a structured inverse. This algorithm improves device independent color across devices, such as, for example, printers, scanners and displays.
摘要翻译： 本发明提供了一种迭代聚类插值（ICI）算法，用于使用不规则采样的颜色数据来开发结构化逆。 该算法提高了设备独立于设备的颜色，例如打印机，扫描仪和显示器。
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7.发明授权Feedback control system for controlling developability of a xerographic imaging device 失效用于控制静电复印成像设备的显影性的反馈控制系统
公开(公告)号：US5950040A
公开(公告)日：1999-09-07
申请号：US83140
申请日：1998-05-22
申请人： Lingappa K. Mestha , Meera Sampath , Yao Rong Wang
发明人： Lingappa K. Mestha , Meera Sampath , Yao Rong Wang
IPC分类号： G03G15/00
CPC分类号： G03G15/5037 , G03G2215/00042 , G03G2215/00054 , G03G2215/00063 , G03G2215/0187
摘要： A feedback control system controls developability of a xerographic imaging device that uses optical sensors for measuring development values based upon a target value. The feedback control system includes a controller device and a feedforward device. The controller device includes an input summing node, a gain device, an integrator and a nominal summing node which are serially connected in communication with each other. The input summing node, the gain device and the integrator are operative in combination with each other to receive and process the measured value and the target value to provide an new corrected actuator value to the integrator summing node. The feedforward device is connected to the nominal summing node and receives and responds to the target value to output a nominal actuator value to the nominal summing node. The nominal summing node combines the new corrected actuator value and the nominal actuator value to provide an actuator value to the xerographic imaging device for controlling the developability of the xerographic imaging device. A method for controlling developability of a xerographic imaging device is also described.
摘要翻译： 反馈控制系统控制使用光学传感器来基于目标值测量显影值的静电复印成像装置的显影性。 反馈控制系统包括控制器装置和前馈装置。 控制器装置包括彼此串联连接的输入求和节点，增益装置，积分器和标称求和节点。 输入求和节点，增益装置和积分器彼此组合操作以接收和处理测量值和目标值，以向积分器求和节点提供新的校正致动器值。 前馈设备连接到标称求和节点，并接收并响应目标值，以将标称执行器值输出到标称求和节点。 标称求和节点组合新修正的致动器值和标称致动器值，以向静电摄影成像装置提供致动器值，以控制静电复印成像装置的显影性。 还描述了一种用于控制静电印刷成像装置的显影性的方法。
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8.发明授权公开(公告)号：US06185385B2
公开(公告)日：2001-02-06
申请号：US09083142
申请日：1998-05-22
IPC分类号： G03G1500
CPC分类号： G03G15/5041 , G03G2215/00042 , G03G2215/00054 , G03G2215/0174
摘要： An online printing parameter establishment apparatus is used with a xerographic printing device for printing high quality prints given a target value. The xerographic printing device is capable of producing at least one print control patch on a photoreceptor and is capable of sensing a value of the at least one print control patch. The xerographic printing device has a plurality of sets of inherent performance characteristic values. The online printing parameter establishment apparatus includes a controller device and a switch device. The controller device is operative to produce a first database of different ones of the sensed values. Each sensed value is associated with a respective one of the plurality of sets of inherent performance characteristic values based upon the target value. The controller device is also operative to produce a second database of a plurality of control values. Each one of the control values is extracted from a respective one of the sensed values and the associated set of inherent performance characteristic values. Further, the controller device selects one of the control values which is closely comparable to the target value. A method for online establishment of print control parameters to render high quality prints using a xerographic printing process is also described.
摘要翻译： 在线打印参数建立装置与静电印刷装置一起使用，用于打印给定目标值的高质量打印。 静电印刷装置能够在感光体上产生至少一个打印控制贴片并且能够感测至少一个打印控制贴片的值。 静电印刷装置具有多组固有的性能特征值。 在线打印参数设置装置包括控制器设备和开关设备。 控制器装置可操作以产生不同感测值的第一数据库。 基于目标值，每个感测值与多组固有性能特征值中的相应一个相关联。 控制器设备还可操作以产生多个控制值的第二数据库。 控制值中的每一个都从相应的一个感测值和相关的固有性能特征值集合中提取出来。 此外，控制器设备选择与目标值非常相似的一个控制值。 还描述了用于在线建立打印控制参数以使用静电印刷处理来呈现高质量打印的方法。
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9.发明授权Sensorless quality control apparatus used upon malfunction of a quality control sensor and method therefor 失效用于质量控制传感器故障时使用的无传感器质量控制装置及其方法
公开(公告)号：US6021285A
公开(公告)日：2000-02-01
申请号：US83141
申请日：1998-05-22
CPC分类号： G03G15/55 , H04N1/00002 , H04N1/00015 , H04N1/00034 , H04N1/00037 , H04N1/00082 , G03G2215/00042
摘要： An image quality control apparatus controls quality of xerographic images formed by a xerographic imaging system onto a recording medium when at least one sensor which is operative to provide signals to the xerographic imaging system for quality control malfunctions. The image quality control apparatus includes a controller device in communication with the xerographic imaging system. The controller includes a data collection device, a determining device and an input generating device. The data collection device collects and processes sensor data received from the at least one sensor while the at least one sensor is operative. The determining device determines whether the at least one sensor malfunctions. The input generating device generates a controller input signal by using the sensor data collected by the data collection device and provides the controller input signal to the xerographic imaging system to control quality of the xerographic images when the determining device determines that the at least one sensor has malfunctioned. A method for controlling quality of a xerographic print after malfunction of a quality control sensor is also described.
摘要翻译： 当至少一个传感器可操作以向静电影像成像系统提供信号以进行质量控制故障时，图像质量控制装置将由静电复印成像系统形成的静电复印图像的质量控制在记录介质上。 图像质量控制装置包括与静电复印成像系统通信的控制器装置。 控制器包括数据采集装置，确定装置和输入产生装置。 当所述至少一个传感器可操作时，所述数据收集装置收集并处理从所述至少一个传感器接收的传感器数据。 确定装置确定至少一个传感器是否发生故障。 所述输入产生装置通过使用由所述数据收集装置收集的传感器数据来生成控制器输入信号，并且当所述确定装置确定所述至少一个传感器具有所述静电图像时，将所述控制器输入信号提供给所述静电复印图像成像系统以控制所述静电复印图像的质量 发生故障 还描述了在质量控制传感器故障之后控制静电印刷品质的方法。
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10.发明授权
公开(公告)号：US5995776A
公开(公告)日：1999-11-30
申请号：US83142
申请日：1998-05-22
IPC分类号： G03G15/00
CPC分类号： G03G15/5041 , G03G2215/00042 , G03G2215/00054 , G03G2215/0174
摘要： An online printing parameter establishment apparatus is used with a xerographic printing device for printing high quality prints given a target value. The xerographic printing device is capable of producing at least one print control patch on a photoreceptor and is capable of sensing a value of the at least one print control patch. The xerographic printing device has a plurality of sets of inherent performance characteristic values. The online printing parameter establishment apparatus includes a controller device and a switch device. The controller device is operative to produce a first database of different ones of the sensed values. Each sensed value is associated with a respective one of the plurality of sets of inherent performance characteristic values based upon the target value. The controller device is also operative to produce a second database of a plurality of control values. Each one of the control values is extracted from a respective one of the sensed values and the associated set of inherent performance characteristic values. Further, the controller device selects one of the control values which is closely comparable to the target value. A method for online establishment of print control parameters to render high quality prints using a xerographic printing process is also described.
摘要翻译： 在线打印参数建立装置与静电印刷装置一起使用，用于打印给定目标值的高质量打印。 静电印刷装置能够在感光体上产生至少一个打印控制贴片并且能够感测至少一个打印控制贴片的值。 静电印刷装置具有多组固有的性能特征值。 在线打印参数设置装置包括控制器设备和开关设备。 控制器装置可操作以产生不同感测值的第一数据库。 基于目标值，每个感测值与多组固有性能特征值中的相应一个相关联。 控制器设备还可操作以产生多个控制值的第二数据库。 控制值中的每一个都从相应的一个感测值和相关的固有性能特征值集合中提取出来。 此外，控制器设备选择与目标值非常相似的一个控制值。 还描述了用于在线建立打印控制参数以使用静电印刷处理来呈现高质量打印的方法。
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