Patents by Inventor Raymond J. Clark

Raymond J. Clark has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9561644
    Abstract: A method and system compensates for malfunctioning inkjets using contone values for an image prior to the contone values being rendered for printing of the image. The method generates contone values for color space components in a compensation level for each malfunctioning inkjet. The contone values in each compensation level are modified with reference to a profile selected for each malfunctioning inkjet and with reference to the modification of the contone values in the vicinity of each malfunctioning with the compensative level. The modified contone values of each compensation level are merged with the contone values in the vicinity of each malfunctioning inkjet. The contone values are then rendered and used to operate inkjets for forming an ink image on an ink receiving member.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: February 7, 2017
    Assignee: Xerox Corporation
    Inventors: Raymond J. Clark, Roger L. Triplett, Stuart A. Schweid, Martin L. Frachioni
  • Patent number: 9302519
    Abstract: A printer detects malfunctioning ejectors during printing of three-dimensional objects or two-dimensional printed matter. The printer operates the printhead or printheads in the printer to form convex drops of material on a substrate. A camera is positioned to minimize light reflections from the substrate into the camera. The camera is configured to generate image data of the light reflected from the substrate and specularly from the convex drops on the substrate. A controller analyzes the image data to identify malfunctioning inkjets.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: April 5, 2016
    Assignee: Xerox Corporation
    Inventors: Raymond J. Clark, Frank B. Tamarez Gomez, Timothy P. Foley, Paul S. Bonino
  • Patent number: 9090113
    Abstract: An apparatus detects inoperative ejectors during printing of three-dimensional objects. The apparatus operates the printhead or printheads in the printer to form test pattern on a substrate. A pneumatic sensor directs a pneumatic stream towards substrate and measures the pneumatic impedance. The impedance differences between area where the test pattern is formed and bare areas are analyzed to identify inoperative inkjets.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: July 28, 2015
    Assignee: Xerox Corporation
    Inventors: Timothy P. Foley, Paul S. Bonino, Raymond J. Clark, Frank B. Tamarez Gomez
  • Patent number: 9079440
    Abstract: An apparatus detects inoperative inkjets during printing. The apparatus includes a light transmitting substrate onto which a test pattern of material is ejected. A light source directs light into the substrate and an optical sensor generates image data of a surface of the substrate. Light propagates through the substrate unless it reaches a position where the material is present on the surface. Thus, the material emits light so a contrast exists between the surface of the substrate and the material emitting light. By comparing the image data to the positions of the light emitting areas on the surface, inoperative inkjets are detected.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: July 14, 2015
    Assignee: Xerox Corporation
    Inventors: Paul S. Bonino, Frank B. Tamarez Gomez, Raymond J. Clark, Timothy P. Foley
  • Patent number: 8807695
    Abstract: An inkjet printer estimates ink usage in the printer with reference to image pixels and a history of inkjet firing for each inkjet. The printer includes an apparatus that generates an ink mass for each image pixel with reference to the image pixel and a predetermined number of previously ejected image pixels and identifies a total ink mass measurement for a printhead with reference to the ink masses generated for the image pixels of an image to be printed by the inkjet printer.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: August 19, 2014
    Assignee: Xerox Corporation
    Inventors: David A. Mantell, David J. Metcalfe, Martin L. Frachioni, Raymond J. Clark
  • Publication number: 20140210898
    Abstract: An inkjet printer estimates ink usage in the printer with reference to image pixels and a history of inkjet firing for each inkjet. The printer includes an apparatus that generates an ink mass for each image pixel with reference to the image pixel and a predetermined number of previously ejected image pixels and identifies a total ink mass measurement for a printhead with reference to the ink masses generated for the image pixels of an image to be printed by the inkjet printer.
    Type: Application
    Filed: January 30, 2013
    Publication date: July 31, 2014
    Applicant: XEROX CORPORATION
    Inventors: David A. Mantell, David J. Metcalfe, Martin L. Frachioni, Raymond J. Clark
  • Patent number: 8712925
    Abstract: Disclosed is a processor-implemented method for processing images. The processor receives image data of a color space defined by input provided to a system by a user, determines at least one color attribute of the pixels in the received image correlating to at least perceptual image characteristics, determines statistics using the attribute(s), and analyzes the statistics to classify the image into a category. Based on at least the category, a billing structure for the image is determined. For example, chroma and/or hue of pixels can be used to create histograms, whose data is used to determine a degree of color and/or content of an image, which is categorized. Color space components of received pixels can also be statistically analyzed. Such determinations consider billing based on human perception of use of color. Billing for color images in this manner satisfies the user and increases use of color output (e.g., printing).
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: April 29, 2014
    Assignee: Xerox Corporation
    Inventors: Raymond J. Clark, Stuart A. Schweid, Roger Lee Triplett
  • Patent number: 8670154
    Abstract: The present application provides a mixed resolution, interleaving-based, cross-channel data flow and data format for a printer image path. The architecture provides pixel data for a colorant of a given writing channel at its nominal (full) resolution, while pixel data for other colorants is provided at lowered resolution. Pixel data for a primary channel at its full resolution is interleaved with data for other secondary channels at lower resolution. Known sub-sampling or compression techniques can be used to lower the resolution of the secondary channels. The data at the different resolutions is generated by the digital front end (DFE), which distributes the data for each writing channel at the time it is needed. Preferably, the low resolution data is sent first to the writer, followed by high resolution data, so that data buffering is minimized.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: March 11, 2014
    Assignee: Xerox Corporation
    Inventors: Peter A. Crean, Robert Paul Loce, Raymond J. Clark
  • Patent number: 8660373
    Abstract: Systems and methods are described that facilitate identifying objects in a document (e.g., a PDF document) for automatic image enhancement (AIE). A PDF document is “chunked” or segmented into chunks, and boundaries between chunks are identified as real or imaginary. Chunks sharing imaginary boundaries are combined, while real boundaries are retained, to generate “de-chunked” objects. These objects are then classified, and an AIE application is executed on objects meeting pre-specified classification criteria. In this manner, objects of r which AIE is not desired are not subjected to the AIE application, thereby saving time and processing resources associated with enhancing the document.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: February 25, 2014
    Assignee: Xerox Corporation
    Inventors: Zhigang Fan, Reiner Eschbach, Michael Branciforte, Farzin Blurfrushan, Roger L. Triplett, Raymond J. Clark, William A. Fuss, Michael E. Farrell, David E. Rumph
  • Publication number: 20130097099
    Abstract: Disclosed is a processor-implemented method for processing images. The processor receives image data of a color space defined by input provided to a system by a user, determines at least one color attribute of the pixels in the received image correlating to at least perceptual image characteristics, determines statistics using the attribute(s), and analyzes the statistics to classify the image into a category. Based on at least the category, a billing structure for the image is determined. For example, chroma and/or hue of pixels can be used to create histograms, whose data is used to determine a degree of color and/or content of an image, which is categorized. Color space components of received pixels can also be statistically analyzed. Such determinations consider billing based on human perception of use of color. Billing for color images in this manner satisfies the user and increases use of color output (e.g., printing).
    Type: Application
    Filed: October 18, 2011
    Publication date: April 18, 2013
    Applicant: XEROX CORPORATION
    Inventors: Raymond J. CLARK, Stuart A. Schweid, Roger Lee Triplett
  • Patent number: 8305640
    Abstract: A system renders print jobs via a marking engine. A raster image processor receives the job from the input module and renders it to one or more raster images. One or more contone image processors receive the one or more raster images to perform cross-channel image processing to render the raster images into a form compatible with the marking engine, wherein the output is partially sub-partitioned by color separation. An image refactoring and distribution network completes the sub-partitioning by separation of the rendered contone raster images by color separation and distributes each color sub-partition to a marker channel module specific to each color sub-partition. A marking engine receives the color sub-partitioned image data, marks the image onto a substrate and outputs a hardcopy of the image.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: November 6, 2012
    Assignee: Xerox Corporation
    Inventors: Isaak Rivshin, Raymond J. Clark, Daniel Davies, Dale T. Platteter, Michael W. Marchetti
  • Publication number: 20120274955
    Abstract: The present application provides a mixed resolution, interleaving-based, cross-channel data flow and data format for a printer image path. The architecture provides pixel data for a colorant of a given writing channel at its nominal (full) resolution, while pixel data for other colorants is provided at lowered resolution. Pixel data for a primary channel at its full resolution is interleaved with data for other secondary channels at lower resolution. Known sub-sampling or compression techniques can be used to lower the resolution of the secondary channels. The data at the different resolutions is generated by the digital front end (DFE), which distributes the data for each writing channel at the time it is needed. Preferably, the low resolution data is sent first to the writer, followed by high resolution data, so that data buffering is minimized.
    Type: Application
    Filed: May 23, 2011
    Publication date: November 1, 2012
    Applicant: Xerox Corporation
    Inventors: PETER A. CREAN, ROBERT PAUL LOCE, RAYMOND J. CLARK
  • Publication number: 20110194125
    Abstract: A system renders print jobs via a marking engine. A raster image processor receives the job from the input module and renders it to one or more raster images. One or more contone image processors receive the one or more raster images to perform cross-channel image processing to render the raster images into a form compatible with the marking engine, wherein the output is partially sub-partitioned by color separation. An image refactoring and distribution network completes the sub-partitioning by separation of the rendered contone raster images by color separation and distributes each color sub-partition to a marker channel module specific to each color sub-partition. A marking engine receives the color sub-partitioned image data, marks the image onto a substrate and outputs a hardcopy of the image.
    Type: Application
    Filed: February 10, 2010
    Publication date: August 11, 2011
    Applicant: XEROX CORPORATION
    Inventors: Isaak Rivshin, Raymond J. Clark, Daniel Davies, Dale T. Platteter, Michael W. Marchetti
  • Publication number: 20100021069
    Abstract: Systems and methods are described that facilitate identifying objects in a document (e.g., a PDF document) for automatic image enhancement (AIE). A PDF document is “chunked” or segmented into chunks, and boundaries between chunks are identified as real or imaginary. Chunks sharing imaginary boundaries are combined, while real boundaries are retained, to generate “de-chunked” objects. These objects are then classified, and an AIE application is executed on objects meeting pre-specified classification criteria. In this manner, objects of r which AIE is not desired are not subjected to the AIE application, thereby saving time and processing resources associated with enhancing the document.
    Type: Application
    Filed: July 22, 2008
    Publication date: January 28, 2010
    Applicant: Xerox Corporation
    Inventors: Zhigang Fan, Reiner Eschbach, Michael Branciforte, Farzin Blufrushan, Roger L. Triplett, Raymond J. Clark, William A. Fuss, Michael E. Farrell, David E. Rumph
  • Patent number: 6631215
    Abstract: A method and apparatus are provided for determining a weighted average measured reflectance parameter Rm for pixels in an image for use in integrated cavity effect correction of the image. For each pixel of interest Pi,j in the image, an approximate spatial dependent average Ai,j, Bi,j of video values in a region of W pixels by H scan lines surrounding the pixel of interest Pi,j is computed by convolving video values Vi,j of the image in the region with a uniform filter. For each pixel of interest Pi,j a result of the convolving step is used as the reflectance parameter Rm. The apparatus includes a video buffer for storing the pixels of the original scanned image, and first and second stage average buffers for storing the computed approximate spatial dependent averages Ai,j, Bi,j. First and second stage processing circuits respectively generate the first and second stage average values Ai,j, Bi,j by convolving the video values of the image in a preselected region with a uniform filter.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: October 7, 2003
    Assignee: Xerox Corporation
    Inventors: Jeng-nan Shiau, Raymond J. Clark, Stuart A. Schweid, Terri A. Clingerman
  • Patent number: 6411735
    Abstract: A method and apparatus are disclosed for distinguishing noisy continuous tone document types from other document types such as halftone or text, in order to maintain reliable image segmentation. In both cases a Range of Video microclassifier is added to the other microclassifiers (Sij, estimated halftone frequency, etc.) to disqualify noisy continuous tone images from being incorrectly classified as other document types such as halftone or text document types.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: June 25, 2002
    Assignee: Xerox Corporation
    Inventors: Leon C. Williams, Raymond J. Clark, Stuart A. Schweid
  • Patent number: 6347153
    Abstract: A system and method classify a pixel of image data as one of a plurality of image types. A first image characteristic value for the pixel, a second image characteristic value for the pixel, a third image characteristic value for the pixel, and a fourth image characteristic for the pixel is determined. Some of these determinations may be resolution dependent. The values from these determination are utilized in assigning an image type classification to the pixel. An auto-segmentation circuit enables classifying a pixel as a continuous tone and detecting a gradient in the window of pixels of which the pixel is a member. A filter enhances the image data of the pixel tone when a gradient indicating that image data within the window of pixels is changing at a rate greater than a predetermined threshold is detected or lowpasses the image data of the pixel tone when a gradient indicating that image data within the window of pixels is changing at a rate less than a predetermined threshold is detected.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: February 12, 2002
    Assignee: Xerox Corporation
    Inventors: Roger L. Triplett, Raymond J. Clark, Jeng-Nan Shiau
  • Patent number: 6229923
    Abstract: A system and method classify a pixel of image data as one of a plurality of image types. A first image characteristic value for the pixel, a second image characteristic value for the pixel, a third image characteristic value for the pixel, and a fourth image characteristic for the pixel is determined. Some of these determinations may be resolution dependent. The values from these determination are utilized in assigning an image type classification to the pixel. Moreover, if at least one of the image characteristic values is greater than a predetermined threshold value the pixel is classified as a halftone peak value.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: May 8, 2001
    Assignee: Xerox Corporation
    Inventors: Leon C. Williams, Raymond J. Clark, Jeng-Nan Shiau
  • Patent number: 6185336
    Abstract: A system and method electronically image process a pixel belonging to a set of digital image data with respect to a membership of the pixel in a plurality of image classes. This process uses fuzzy classification to determine a membership value for the pixel for each image classes and generates an effect tag for the pixel based on the fuzzy classification determination. The pixel is image processed based on the membership vector of the pixel. The determination of the membership value also includes the determination of the halftone frequency of the pixel. The present process injects random noise into the frequency estimate before classification to avoid having a sharp shift in the pixel classification population as the ripple in the frequency microclassifier crosses the quantization threshold.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: February 6, 2001
    Assignee: Xerox Corporation
    Inventors: Raymond J. Clark, Stuart A. Schweid
  • Patent number: 6181829
    Abstract: A system and method classify a pixel of image data as one of a plurality of image types. A first image characteristic value for the pixel, a second image characteristic value for the pixel ,a third image characteristic value for the pixel, and a fourth image characteristic for the pixel is determined. Some of these determinations may be resolution dependent. The values from these determination are utilized in assigning an image type classification to the pixel. Moreover, if at least one of the image characteristic values is greater than a predetermined threshold value the pixel is classified as a halftone peak value.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: January 30, 2001
    Assignee: Xerox Corporation
    Inventors: Raymond J. Clark, Leon C. Williams, Stuart A. Schweid, Jeng-Nan Shiau