公开(公告)号：US20040196498A1

公开(公告)日：2004-10-07

申请号：US10606030

申请日：2003-06-25

Applicant: Xerox Corporation

Inventor： R. Victor Klassen

IPC: G06F015/00 ,  G06K001/00

CPC classification number: G06F3/1212 ,  G06F3/1206 ,  G06F3/124 ,  G06F3/1285

Abstract: A printing system comprised of a printer, a plurality of processing nodes, each processing node being disposed for processing a portion of a print job into a printer dependent format, and a processing manager for spooling the print job into selectively sized chunks and assigning the chunks to selected ones of the nodes for parallel processing of the chunks by the processing nodes into the printer dependent format. The chunks are selectively sized from at least one page to an entire size of the print job in accordance with predetermined splitting factors for enhancing printer printing efficiency. The operating of the printing system includes a method for parallel processing of a print job with a plurality of processing nodes into a printer-ready format for printing the print job, wherein operating modes are provided for: auto-recovery in response to a page fault by executing an auto recovery in serial mode of operation; auto-discovery of system hardware resources; and parallel processing of protected PostScript print jobs.

Abstract translation: 一种由打印机，多个处理节点组成的打印系统，每个处理节点被设置用于将打印作业的一部分处理成打印机相关格式;以及处理管理器，用于将打印作业卷绕成选定大小的块并分配块 到所选择的节点中，用于由处理节点将处理节点并行处理成打印机依赖格式。 根据用于提高打印机打印效率的预定分割因素，该块从打印作业的至少一页到整个尺寸选择性地大小。 打印系统的操作包括用于将具有多个处理节点的打印作业并行处理成用于打印作业的打印机就绪格式的方法，其中提供操作模式用于：响应于页面错误的自动恢复 通过在串行操作模式下执行自动恢复; 自动发现系统硬件资源; 以及受保护的PostScript打印作业的并行处理。

公开(公告)号：US20020075379A1

公开(公告)日：2002-06-20

申请号：US09738573

申请日：2000-12-15

Applicant: XEROX CORPORATION

Inventor： R. Victor Klassen ,  Stephen C. Morgana ,  Robert P. Loce ,  Michael Branciforte ,  Daniel R. Maurer ,  Michael J. Martin ,  Robert M. Lofthus

IPC: B41J002/47

CPC classification number: B41J2/471

Abstract: A method for rendering a raster output level determines an image position of a pixel of interest (POI) within an image. An intended raster output level, which corresponds to the POI, is received into a processing device. A final raster output level is determined as a function of the image position and the intended raster output level. The final output level and the image position are transmitted to an output device. An actual raster output level is rendered, via the output device, at a position on an output medium corresponding to the image position. The actual raster output level substantially matches the intended raster output level.

Abstract translation: 用于渲染光栅输出电平的方法确定图像内的感兴趣像素（POI）的图像位置。 对应于POI的预期光栅输出电平被接收到处理设备中。 最终光栅输出电平被确定为图像位置和预期光栅输出电平的函数。 最终输出电平和图像位置被发送到输出设备。 通过输出设备，在对应于图像位置的输出介质上的位置处渲染实际的光栅输出电平。 实际光栅输出电平基本上与预期的光栅输出电平相匹配。

公开(公告)号：US20040252905A1

公开(公告)日：2004-12-16

申请号：US10458427

申请日：2003-06-11

Applicant: XEROX CORPORATION

Inventor： Howard A. Mizes ,  R. Victor Klassen

IPC: G06K009/40

CPC classification number: H04N1/00002 ,  H04N1/00005 ,  H04N1/00042 ,  H04N1/0005 ,  H04N1/00082 ,  H04N1/00092 ,  H04N1/405 ,  H04N1/6033

Abstract: Diminished intensity defects occur in electrostatic printing between image regions having grey levels, i.e., different electrostatic potential and toner densities. Such defects occur when higher density regions nullstealnull toner from lower density regions. The system and methods according to this invention compensate for these defects by modifying the input image data. The input image data in lighter regions that precede or occur near a light-to-dark transition to a dark region are raised above the input image values. Thus, when printed, the printed image intensity values in such regions are higher than the corresponding image intensity values. As a result, when the higher density regions steal the extra toner provided due to the raised values, the gray level of the printed image corresponds to the desired gray level. The magnitude of these defects is periodically measured with a calibration pattern to generate and/or update compensation factors used in the compensation process.

Abstract translation: 在具有灰度级的图像区域（即，不同的静电电位和调色剂密度）之间的静电印刷中出现缺陷强度缺陷。 当较高密度区域从较低密度区域“偷”“调色剂时，会发生这种缺陷。 根据本发明的系统和方法通过修改输入图像数据来补偿这些缺陷。 在暗区域的暗到暗过渡之前或之后的较亮区域中的输入图像数据升高到输入图像值之上。 因此，当打印时，这些区域中的打印图像强度值高于相应的图像强度值。 结果，当较高密度区域由于升高的值而窃取提供的多余的调色剂时，印刷图像的灰度等于期望的灰度级。 这些缺陷的大小通过校准模式周期性地测量，以产生和/或更新补偿过程中使用的补偿因子。

公开(公告)号：US20040197124A1

公开(公告)日：2004-10-07

申请号：US10408022

申请日：2003-04-04

Applicant: XEROX CORPORATION

Inventor： R. Victor Klassen

IPC: B41J003/42

CPC classification number: G06F3/1211 ,  G06F3/124 ,  G06F3/1247 ,  G06F3/1285

Abstract: A method and system is provided for splitting a print job lacking page independence into selected job portions wherein the job portions can be independently processed in a plurality of processing nodes into a printer dependent format for printing by a printer. The print job is searched for selected tokens/idioms known to normally generate a fault upon the independent processing if the print job were to be split into the selected job portions that were intended to be handled independently. The selected tokens found in the search are saved. The print job is then split into the selected portions and the tokens are then associated with the split job portions for guaranteeing processing independence during the processing by the processing nodes.

公开(公告)号：US20040196496A1

公开(公告)日：2004-10-07

申请号：US10407564

申请日：2003-04-04

Applicant: XEROX CORPORATION

Inventor： R. Victor Klassen

IPC: G06F009/38 ,  G06F003/12 ,  G06F015/00

CPC classification number: G06F3/1212 ,  G06F3/1206 ,  G06F3/124 ,  G06F3/1285

Abstract: A printing system comprised of a printer, a plurality of processing nodes, each processing node being disposed for processing a portion of a print job into a printer dependent format, and a processing manager for spooling the print job into selectively sized chunks and assigning the chunks to selected ones of the nodes for parallel processing of the chunks by the processing nodes into the printer dependent format. The chunks are selectively sized from at least one page to an entire size of the print job in accordance with predetermined splitting factors for enhancing printer printing efficiency.

Abstract translation: 一种由打印机，多个处理节点组成的打印系统，每个处理节点被设置用于将打印作业的一部分处理成打印机相关格式;以及处理管理器，用于将打印作业卷绕成选定大小的块并分配块 到所选择的节点中，用于由处理节点将处理节点并行处理成打印机依赖格式。 根据用于提高打印机打印效率的预定分割因素，该块从打印作业的至少一页到整个尺寸选择性地大小。

公开(公告)号：US20040179090A1

公开(公告)日：2004-09-16

申请号：US10812545

申请日：2004-03-29

Applicant: Xerox Corporation

Inventor： R. Victor Klassen ,  Stephen C. Morgana ,  Robert P. Loce ,  Michael Branciforte ,  Daniel R. Maurer ,  Michael J. Martin ,  Robert M. Lofthus

IPC: B41J002/47

CPC classification number: B41J2/471

Abstract: A method for rendering a raster output level determines an image position of a pixel of interest (POI) within an image. An intended raster output level, which corresponds to the POI, is received into a processing device. A final raster input level is determined as a function of the image position and the intended raster output level. The final input level and the image position are transmitted to an output device. An actual raster output level is rendered, via the output device, at a position on an output medium corresponding to the image position. The actual raster output level substantially matches the intended raster output level.

Abstract translation: 用于渲染光栅输出电平的方法确定图像内的感兴趣像素（POI）的图像位置。 对应于POI的预期光栅输出电平被接收到处理设备中。 根据图像位置和预期的光栅输出电平确定最终光栅输入电平。 最终输入电平和图像位置被发送到输出设备。 通过输出设备，在对应于图像位置的输出介质上的位置处渲染实际的光栅输出电平。 实际光栅输出电平基本上与预期的光栅输出电平相匹配。

公开(公告)号：US20020122207A1

公开(公告)日：2002-09-05

申请号：US09750552

申请日：2000-12-28

Applicant: XEROX CORPORATION

Inventor： R. Victor Klassen ,  Thyagarajan Balasubramanian

IPC: G06K015/00 ,  H04N001/40

CPC classification number: H04N1/6019

Abstract: A method for converting a specified color value from a first color space to a second color space identifies the specified color value in the first color space. A converted color space value is received from a final lookup table. The converted color space value is previously determined as a function of the specified color value and a mid-point interpolation and represents the specified color in the second color space. The converted color space value is stored in a memory device.

Abstract translation: 将指定颜色值从第一颜色空间转换为第二颜色空间的方法识别第一颜色空间中指定的颜色值。 从最终查找表接收转换的颜色空间值。 转换的颜色空间值预先被确定为指定的颜色值和中点内插的函数，并且表示第二颜色空间中的指定颜色。 转换的色彩空间值被存储在存储器件中。

公开(公告)号：US20020067849A1

公开(公告)日：2002-06-06

申请号：US09731346

申请日：2000-12-06

Applicant: XEROX CORPORATION

Inventor： R. Victor Klassen ,  Thyagarajan Balasubramanian

IPC: G06K009/00

CPC classification number: G06K9/00 ,  H04N1/6016 ,  H04N1/6058

Abstract: A method of color transformation is based on non-separable tiling of a color space. Non-separable tiling allows fine granularity where it is desired and coarse granularity where it is tolerable. Non-separable tiling of the color space provides improved transformation quality for a given lookup table size. Color space is recursively tiled and addressed. Transformation information from the tiles is stored in a database. Database searching techniques are used to speed information access. For example, a hashing function and hashing table are employed to store and retrieve transformation information. An image processor operative to perform the method includes a database index generator and a database of transformation information. For example, the database index generator generates a hashing key from pixel information and uses a hashing function to generate a database cell index. The image processor includes an output device. The output device is, for example, a xerographic printer.

Abstract translation: 颜色变换的方法是基于颜色空间的不可分离的平铺。 不可分割的平铺可以在需要的地方进行精细的粒度，在可容忍的地方允许粗粒度。 颜色空间的不可分离的平铺为给定的查找表大小提供了改进的转换质量。 颜色空间被递归地平铺和解决。 来自瓦片的转换信息被存储在数据库中。 数据库搜索技术用于加速信息访问。 例如，使用散列函数和散列表来存储和检索变换信息。 可操作地执行该方法的图像处理器包括数据库索引生成器和变换信息的数据库。 例如，数据库索引生成器从像素信息生成哈希键，并使用散列函数生成数据库单元索引。 图像处理器包括输出装置。 输出设备例如是静电印刷机。

公开(公告)号：US20010033686A1

公开(公告)日：2001-10-25

申请号：US09867346

申请日：2001-05-29

Applicant: Xerox Corporation.

Inventor： R. Victor Klassen

IPC: G06K009/00

CPC classification number: H04N1/58

Abstract: A color printing system which deposits colors on a separation by separation basis is calibrated to determine a printed color responsive to a requested color, based on a mapping of device independent colors to printer output colors. The system provides trapping to correct misregistration between printer output colors due to imperfect placement of said separation color. Such a system includes calibration data stored in a device memory mapping a set of device independent colors to printer output colors; a trapping processor, using calibration data to determine device independent colors for printer colors. Also included is a trapping calculation processor, converting device independent colors to a color space in which equivalent color differences in human color perception are approximately equivalent values, determining whether to trap, a trap color, and a trapping location for the trapping color. An image modification processor is also provided to alter the image accordance with any determinations of said trapping calculation processor.

Abstract translation: 校准基于分离基础分离颜色的彩色打印系统，以基于与设备无关的颜色与打印机输出颜色的映射来确定响应所请求颜色的打印颜色。 该系统由于所述分离颜色的不完全放置而提供捕获以纠正打印机输出颜色之间的重合。 这样的系统包括存储在设备存储器中的校准数据，其将一组与设备无关的颜色映射到打印机输出颜色; 捕获处理器，使用校准数据来确定打印机颜色的独立于设备的颜色。 还包括捕获计算处理器，将设备独立的颜色转换为颜色空间，其中人类颜色感知中的等效颜色差异近似为等价值，确定是否陷阱，陷阱颜色和捕获颜色的捕获位置。 还提供了图像修改处理器以根据所述捕获计算处理器的任何确定来改变图像。

公开(公告)号：US20040196497A1

公开(公告)日：2004-10-07

申请号：US10606024

申请日：2003-06-25

Applicant: Xerox Corporation

Inventor： R. Victor Klassen ,  Jess R. Gentner

IPC: G06F009/38 ,  G06F015/00 ,  G06F003/12

CPC classification number: G06F3/1212 ,  G06F3/1206 ,  G06F3/124 ,  G06F3/1285

Abstract: A printing system comprised of a printer, a plurality of processing nodes, each processing node being disposed for processing a portion of a print job into a printer dependent format, and a processing manager for spooling the print job into selectively sized chunks and assigning the chunks to selected ones of the nodes for parallel processing of the chunks by the processing nodes into the printer dependent format. The chunks are selectively sized from at least one page to an entire size of the print job in accordance with predetermined splitting factors for enhancing printer printing efficiency. The operating of the printing system includes a method for parallel processing of a print job with a plurality of processing nodes into a printer-ready format for printing the print job, wherein the processing nodes communicate with a virtual disk transfer system and control usage thereof by monitoring available space in the virtual disk transfer system.

Abstract translation: 一种由打印机，多个处理节点组成的打印系统，每个处理节点被设置用于将打印作业的一部分处理成打印机相关格式;以及处理管理器，用于将打印作业卷绕成选定大小的块并分配块 到所选择的节点中，用于由处理节点将处理节点并行处理成打印机依赖格式。 根据用于提高打印机打印效率的预定分割因素，该块从打印作业的至少一页到整个尺寸选择性地大小。 打印系统的操作包括用于将具有多个处理节点的打印作业并行处理成用于打印作业的打印机就绪格式的方法，其中处理节点与虚拟盘传送系统通信并且通过 监控虚拟磁盘传输系统中的可用空间。