公开(公告)号：US5983065A

公开(公告)日：1999-11-09

申请号：US898824

申请日：1997-07-23

申请人： Jeffrey J. Folkins ,  Michael M. Shahin ,  Craig A. Smith ,  Michael A. Parisi ,  Lingappa K. Mestha

发明人： Jeffrey J. Folkins ,  Michael M. Shahin ,  Craig A. Smith ,  Michael A. Parisi ,  Lingappa K. Mestha

IPC分类号： B41M3/14 ,  G03G21/04 ,  H04N1/00

CPC分类号： H04N1/00795 ,  B41M3/14 ,  G03G21/043 ,  H04N1/00883 ,  H04N1/00925

摘要： A method including:providing a facility with at least one controlled access electronic printing machine;printing original documents with the controlled access electronic printing machine, wherein printed images formed thereby arise from marking materials containing at least one photoactive additive;equipping all uncontrolled access reprographic devices within the facility with a secure illumination source capable of exposing an object document with sufficient intensity to activate the photoactive additive; andilluminating the object document with the secure illumination source of the uncontrolled access reprographic device, wherein the object documents having original document images printed thereon cannot be copied or scanned in a normal copy or scan illumination interval.

摘要翻译： 一种方法，包括：向设施提供至少一个受控访问电子打印机; 用受控访问电子印刷机打印原始文件，其中形成的印刷图像由含有至少一种光活性添加剂的标记材料产生; 为设备内的所有不受控制的访问复制设备装备一个安全的照明源，能够以足够的强度曝光目标文件来激活光活性添加剂; 并且用不受控制的访问复制设备的安全照明源照亮对象文档，其中在其上打印有原始文档图像的对象文档不能以正常复印或扫描照明间隔被复制或扫描。

公开(公告)号：US06690471B2

公开(公告)日：2004-02-10

申请号：US10377910

申请日：2003-02-28

申请人： Jagdish C. Tandon ,  Lingappa K. Mestha

发明人： Jagdish C. Tandon ,  Lingappa K. Mestha

IPC分类号： G01N2125

CPC分类号： G01J3/02 ,  G01J3/0208 ,  G01J3/501 ,  G01J3/51 ,  G01J3/513 ,  G01J3/52 ,  G01J3/524 ,  G03G15/01 ,  G03G2215/00063 ,  G03G2215/00067 ,  H04N1/6033

摘要： An improved and lower cost color spectrophotometer, especially suitable for on-line color printer color control systems, incorporating a low cost commercial imaging chip, which normally only forms part of a three row, three color, document imaging bar used for imaging documents in scanners, digital copiers, or multifunction products, having multiple photo-sites with at least three different color filters in three rows. This multiple photo-sites chip may be modified to also provide unfiltered photo-sites. This spectrophotometer may have a substantially reduced number of different LED or other spectral illumination sources, one of which may be for white light, yet provide multiple spectral data outputs from the differently filtered photo-sites being simultaneous illuminated by the light reflected from a color test target area which is being sequentially illuminated by the respective limited number of LEDs, enabling broad spectrum information and color control.

摘要翻译： 一种改进且成本较低的彩色分光光度计，特别适用于在线彩色打印机色彩控制系统，结合了低成本的商业成像芯片，通常仅形成扫描仪中成像文档的三行三色文档成像条的一部分 ，数字复印机或多功能产品，具有三行具有至少三种不同滤色片的多个照片位置。 可以修改该多个照片位置芯片，以提供未过滤的照片位置。 该分光光度计可以具有基本上减少数量的不同的LED或其它光谱照明源，其中一个可以用于白光，但是提供来自不同滤光的光点的多个光谱数据输出，由来自颜色测试反射的光同时照亮 目标区域由相应有限数量的LED顺序地照亮，从而实现广谱信息和颜色控制。

公开(公告)号：US06636628B1

公开(公告)日：2003-10-21

申请号：US09487587

申请日：2000-01-19

申请人： Yao Rong Wang ,  Lingappa K. Mestha ,  Daniel Edgardo Viassolo ,  Sohail A. Dianat

发明人： Yao Rong Wang ,  Lingappa K. Mestha ,  Daniel Edgardo Viassolo ,  Sohail A. Dianat

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。

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

IPC分类号： B41J2/52 ,  B41J2/47 ,  G03G15/00 ,  G03G15/08 ,  H04N1/405 ,  H04N1/407

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。

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。

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

IPC分类号： G06F15/00 ,  H04N1/46 ,  G03F3/08

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。

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。

公开(公告)号：US06621576B2

公开(公告)日：2003-09-16

申请号：US09862247

申请日：2001-05-22

申请人： Jagdish C. Tandon ,  Lingappa K. Mestha

发明人： Jagdish C. Tandon ,  Lingappa K. Mestha

IPC分类号： G01J342

CPC分类号： G01J3/02 ,  G01J3/0208 ,  G01J3/501 ,  G01J3/51 ,  G01J3/513 ,  G01J3/52 ,  G01J3/524 ,  G03G15/01 ,  G03G2215/00063 ,  G03G2215/00067 ,  H04N1/6033

摘要： An improved and lower cost color spectrophotometer, especially suitable for on-line color printer color control systems, incorporating a low cost commercial imaging chip, which normally only forms part of a three row, three color, document imaging bar used for imaging documents in scanners, digital copiers, or multifunction products, having multiple photo-sites with at least three different color filters in three rows. This multiple photo-sites chip may be modified to also provide unfiltered photo-sites. This spectrophotometer may have a substantially reduced number of different LED or other spectral illumination sources, one of which may be for white light, yet provide multiple spectral data outputs from the differently filtered photo-sites being simultaneous illuminated by the light reflected from a color test target area which is being sequentially illuminated by the respective limited number of LEDs, enabling broad spectrum information and color control.

公开(公告)号：US06344902B1

公开(公告)日：2002-02-05

申请号：US09232465

申请日：1999-01-19

申请人： Charles B. Duke ,  Lingappa K. Mestha ,  Marty E. Banton ,  Tracy E. Thieret ,  Edward J. Solcz

发明人： Charles B. Duke ,  Lingappa K. Mestha ,  Marty E. Banton ,  Tracy E. Thieret ,  Edward J. Solcz

IPC分类号： B41B1500

CPC分类号： H04N1/6097 ,  H04N1/6011 ,  H04N1/6033

摘要： A method and apparatus for using feedback and feedforward in generating predictable, reproducible and pleasing images in a distributed digital image processing system monitors presentation images and provides feedback to a customer that assembled the original image. The originating customer can view the image as it appears on a remote output device and/or adjust the image so that the presentation image will match the image appearing on the image originating device. The system can also automatically adjust the digital images as they are processed by the system to insure that a remotely outputted presentation image matches the original image on the image originating device or on a local output device proximal with the image originating device.

摘要翻译： 一种用于在分布式数字图像处理系统中生成可预测，可再现和令人愉快的图像的反馈和前馈的方法和装置监视呈现图像并向组装原始图像的客户提供反馈。 原始客户可以查看出现在远程输出设备上的图像和/或调整图像，使得呈现图像与出现在图像发起设备上的图像相匹配。 系统还可以在系统处理数字图像时自动调整数字图像，以确保远程输出的呈现图像与图像发起设备上的原始图像或与图像发起设备相邻的本地输出设备匹配。

公开(公告)号：US5784667A

公开(公告)日：1998-07-21

申请号：US754907

申请日：1996-11-22

申请人： Lingappa K. Mestha ,  Thomas Allen Henderson

发明人： Lingappa K. Mestha ,  Thomas Allen Henderson

IPC分类号： G03G15/00 ,  H04N1/407 ,  G03G15/08

CPC分类号： G03G15/5041 ,  H04N1/4078 ,  G03G2215/00042

摘要： A method of development control by storing a reference tone reproduction curve and sensing a relatively small segment of an arbitrary image on an imaging surface. The relatively small segment of the arbitrary image on the imaging surface is then converted into suitable density values, such as background, solid area, and halftone and a control responds to the density values to adjust the machine operation for print quality correction.

摘要翻译： 一种通过存储参考色调再现曲线并且在成像表面上感测任意图像的相对较小的片段的显影控制方法。 然后将成像表面上的任意图像的相对小的片段转换成适当的浓度值，例如背景，实心区域和半色调，并且控制器响应于浓度值以调整机器操作以进行打印质量校正。