A METHOD FOR COMPRESSING DIGITAL DOCUMENTS WITH CONTROL OF IMAGE QUALITY AND COMPRESSION RATE

    公开(公告)号:CA2345218A1

    公开(公告)日:2001-11-01

    申请号:CA2345218

    申请日:2001-04-26

    Applicant: XEROX CORP

    Abstract: A method and apparatus for compressing and decompressing electronic documents, with maximum intradocument independence, and maximum flexibility in optimization of compression modes. The method includes receiving documents containing unknown combinations of a plural data types, including combinations of scanned data, computer rendered data, compressed data and/or rendering tags; dividing the received image into stri ps of blocks determining from the image itself, which data types are present in each block; compressing data of each data type present in each block with a compression method optimized for its data type. Scanned data may be further segmented into plural scanned data types, where each data type is compressed in said compressing data step with a compression method optimized for said scanned image data type. If the received data type is compressed data, the process may include the additional functions of determining a compression ratio thereof, and accepting the compressed data for use as, or decompressing and recompressing the data, based on acceptability of said compression ration determination. An instruction set i s generated that allows detailed decompression instruction data and image data to be combined with transmitted compressed data. A data structure is shown, which segregates data types and instruction data, and allows for block to block and strip to strip processing independence.

    INK JET MULTIPLE FIELD ELECTROSTATIC LENS

    公开(公告)号:CA1133042A

    公开(公告)日:1982-10-05

    申请号:CA337996

    申请日:1979-10-19

    Applicant: XEROX CORP

    Abstract: AN INK JET MULTIPLE FIELD ELECTROSTATIC LENS An ink jet printer is disclosed of the type wherein a plurality of nozzles emit parallel streams of droplets toward a target. Each nozzle has a charging electrode to charge droplets selectively depending upon whether a particular droplet is intended for the target or a gutter. A pair of deflection plates span the paths of the droplet streams and deflects the charged droplets according to information to be printed. A multiple field electrostatic lens is used to align charged droplets from different nozzles to a common line on the target dispite misalignments between nozzles relative to the common line.

    Hybrid single pass, multi-pass full color printing system
    35.
    发明专利
    Hybrid single pass, multi-pass full color printing system 有权
    混合单通,多通彩色打印系统

    公开(公告)号:JP2010009042A

    公开(公告)日:2010-01-14

    申请号:JP2009148445

    申请日:2009-06-23

    Abstract: PROBLEM TO BE SOLVED: To perform spot color changing in a short time. SOLUTION: The hybrid single pass, multi-pass full color printing system 200 comprises a plurality of single-pass image output modules 20-50, each of which includes an image carrying member 10 and a single developer housing 16 containing a monochroic developer forming color image on the image carrying member 10; and at least one single pass, multi-pass image output module 260 having an image bearing member 10 and a plurality of selectable developer housings 216A. Each of the selectable developer housings 216A includes a single spot color developer forming spot color image on the image support member by single pass and by multi-pass for transferring onto the ITB 110. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题:在短时间内进行专色改变。 解决方案:混合单通,多遍全色打印系统200包括多个单遍图像输出模块20-50,每个单遍图像输出模块20-50包括图像承载构件10和单个显影剂外壳16,其包含单色图像 在图像承载部件10上形成彩色图像的显影剂; 以及具有图像承载部件10和多个可选显影剂外壳216A的至少一个单遍,多遍图像输出模块260。 每个可选择的显影剂外壳216A包括通过单程通过图像支持构件上的单次专色显影剂形成专色显影剂,并且通过多遍转印到ITB 110上。(C)2010,JPO和INPIT

    COLOR-MARKING APPARATUS
    36.
    发明专利

    公开(公告)号:JP2002033935A

    公开(公告)日:2002-01-31

    申请号:JP2001128200

    申请日:2001-04-25

    Applicant: XEROX CORP

    Abstract: PROBLEM TO BE SOLVED: To simply calibrate the color adjustment of an output image in a color-marking apparatus. SOLUTION: A target image which is composed of a preselection color, which is selected in advance, is converted into a control signal by a front-end converter 14 according to the color reproduction curve of the color marking apparatus 10. The apparatus 10 performs marking operation of the output image by the control signal, and a parameter which indicates the color of the image is measured by a sensor 12, on the basis of the image. According to the parameter, a point control-type controller 26 creates a control point for tone reproduction curve adjustment. A color balance controller 24 creates a color reproduction curve of the apparatus, on the basis of the control point.

    Method and system which identifies the dimensional depth of a plural number of coded source images in a compound image created by rendering
    37.
    发明专利
    Method and system which identifies the dimensional depth of a plural number of coded source images in a compound image created by rendering 有权
    识别通过渲染创建的复合图像中多个编码源图像的尺寸深度的方法和系统

    公开(公告)号:JP2007168433A

    公开(公告)日:2007-07-05

    申请号:JP2006336098

    申请日:2006-12-13

    CPC classification number: H04N13/0402

    Abstract: PROBLEM TO BE SOLVED: To identify dimensional depth of each of a plural number of multiple coded source images in a compound image created by rendering. SOLUTION: A plural number of source images are coded, and a plural number of source images so coded in the compound images are combined, and the rendering of the compound images is carried out in physical geometry by depositing the narrow band coloring agent chosen on a sheet of paper in image form, and at least one among the first and the second source image is perceived with the different dimensional depth in the compound images where the rendering is performed at the time of controlled illumination of the compound image where the rendering is performed using a plural number of narrow band illuminants. COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题:识别通过渲染创建的复合图像中的多个多个编码源图像中的每一个的尺寸深度。 解决方案:对多个源图像进行编码,并且将复合图像中如此编码的多个源图像组合,并且通过沉积窄带着色剂在物理几何中进行复合图像的渲染 以图像形式在一张纸上选择,并且在复合图像中以不同的尺寸深度感知第一和第二源图像中的至少一个,其中在复合图像的受控照明时执行渲染,其中, 使用多个窄带光源执行渲染。 版权所有(C)2007,JPO&INPIT

    HALFTONE PROCESSOR
    38.
    发明专利

    公开(公告)号:JPH10191057A

    公开(公告)日:1998-07-21

    申请号:JP34309597

    申请日:1997-12-12

    Applicant: XEROX CORP

    Abstract: PROBLEM TO BE SOLVED: To generate halftone dots at a high speed and at a low cost by providing the block of a memory for storing a prescribed halftone dot pattern, a sequence for generating an index as the function of the position of a picture element and a memory address circuit in superscalar design. SOLUTION: A Holladay sequencer 40 is provided with a block 42 for calculating a block index parameter beforehand. The block parameter calculated beforehand is supplied to a dot address sequencer 44 and initial and succeeding Holladay address components are generated for the respective picture elements. The respective first input of a memory block 50 is the output of the sequencer 40 and controls a sequence operation inside the block for indicating the halftone dot. Second input is the picture element or a picture element level to be made into the halftone stored in a latch 52. By using such a circuit, a memory address is generated.

    Common exchange format architecture for color printing in multi-function system
    39.
    发明专利
    Common exchange format architecture for color printing in multi-function system 审中-公开
    用于多功能系统中彩色打印的共同交换格式结构

    公开(公告)号:JP2006033828A

    公开(公告)日:2006-02-02

    申请号:JP2005198593

    申请日:2005-07-07

    CPC classification number: H04N1/00127 H04N2201/0067 H04N2201/0068

    Abstract: PROBLEM TO BE SOLVED: To execute halftoning in a raster image processor. SOLUTION: An image processing system prepares a document image, a raster content image mixed with a common exchange format, from an input device comprising a controller, wherein a document image is formatted in a first document format for outputting from an output device, the output document image is formatted in a second document format, the document image is described with an image signal, a system is inputted by the input device, the image signal formatted in the first document format is converted to the common exchange format, the first document format includes one of a document scanning format and a document creating format, the image signal formatted in the common exchange format is converted to the second document format, and the second document format includes one of a document viewing format and a document marking format. COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题:在光栅图像处理器中执行半色调。 解决方案:图像处理系统从包括控制器的输入设备准备文档图像,与公共交换格式混合的光栅内容图像,其中文档图像被格式化为第一文档格式,用于从输出设备 输出文档图像以第二文档格式格式化,文档图像用图像信号描述,系统由输入设备输入,以第一文档格式格式化的图像信号被转换为公共交换格式, 第一文档格式包括文档扫描格式和文档创建格式之一,以公共交换格式格式化的图像信号被转换为第二文档格式,并且第二文档格式包括文档查看格式和文档标记格式之一 。 版权所有(C)2006,JPO&NCIPI

    Medium/screen lookup table
    40.
    发明专利

    公开(公告)号:JP2004094924A

    公开(公告)日:2004-03-25

    申请号:JP2003194089

    申请日:2003-07-09

    CPC classification number: H04N1/40006 H04N1/4076 H04N1/6097

    Abstract: PROBLEM TO BE SOLVED: To provide a method for compensating variation of system performance related to attributes of an image in an image rendering system. SOLUTION: This method includes steps for selecting first and second attributes to change at least one value of the first and second attributes; for rendering a diagnostic image based on the changed value of the combination of the first and second attributes to sense an image quality from the rendered diagnostic image; for calculating image attribute compensation tone reproduction curve data of the first attribute/the second attribute based on the sensed image quality; for storing tone reproduction curve data of the first and second attributes for using them in rendering an image having the changed value of the combination of the first and second attributes; for receiving formation image data for a formation image having the first and second attribute values; and for applying the stored first/second attribute tone reproduction curve data to the received formation image data to generate compensated image data. COPYRIGHT: (C)2004,JPO

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