Resources Contact Us Home
Browse by Category: Main > Communications
Class Information
Number: 358/3.03
Name: Facsimile and static presentation processing > Static presentation processing (e.g., processing data for printer, etc.) > Attribute control > Multi-level image reproduction (e.g., gray level reproduction) > Error diffusion in gray level or halftone generation
Description: Subject matter wherein the difference or error between a density value of a continuous tone or multi-level (gray level) image and the resulting density value after a thresholding or quantization process is used to convert the continuous tone image to a multi-level image or to convert the multi-level image to a halftone image (i.e., a thresholding or quantization error) is distributed or added to unprocessed density values of the continuous tone or multi-level image.

Sub-classes under this class:

Class Number Class Name Patents
358/3.05 Adaptive error diffusion 189
358/3.04 Property of error weighting filter (e.g., adaptive, deterministic, random) 119

Patents under this class:
1 2 3 4 5 6 7 8 9 10

Patent Number Title Of Patent Date Issued
8681382 Threshold matrix diffusion halftoning Mar. 25, 2014
8681381 Pixel stacking avoidance error diffusion halftone Mar. 25, 2014
8665485 Swapping resolution factors for direct marking printing Mar. 4, 2014
8655065 Image processing device using adding module for adding error diffusion value or error diffusion seed Feb. 18, 2014
8649059 Mutual optimization system for class matrix and diffusion weighting used in halftone image processing technique Feb. 11, 2014
8643904 Image processing device selecting halftone method for each set of pixel data of image data Feb. 4, 2014
8625156 Image forming apparatus and control method thereof Jan. 7, 2014
8625145 Method and apparatus for estimating usage of print substance in a printer Jan. 7, 2014
8619330 Image processing apparatus and image processing method Dec. 31, 2013
8605330 Image processing apparatus and method for converting multivalue image data into multivalue image data corresponding to relative movements Dec. 10, 2013
8599439 Laser color copy image processing independent of classifications Dec. 3, 2013
8587836 Image forming apparatus and control method thereof Nov. 19, 2013
8577162 Output apparatus and output method Nov. 5, 2013
8576456 Secondary scan to ensure transient document erasure Nov. 5, 2013
8576452 Image processing apparatus and image processing method Nov. 5, 2013
8576451 Versatile moire-free halftone geometry that uses frequency vector shearing Nov. 5, 2013
8576449 Parametrically controlled halftone spot function for an irregular halftone grid Nov. 5, 2013
8576447 Error diffusion halftoning with bandpass noise shaping Nov. 5, 2013
8570597 Image forming apparatus and image forming method which enhance graininess and also reduce a total toner amount without deteriorating image quality in image formation using toner of high chroma Oct. 29, 2013
8564838 Image processing apparatus and method for determining arrangement of dot count or recording material amount by error diffusion process Oct. 22, 2013
8559082 Image processing apparatus for gamma conversion of image data Oct. 15, 2013
8547597 Image forming apparatus, control method of image forming apparatus, and computer program product for forming an image comprised of overlapping color and transparent images Oct. 1, 2013
8542409 Printing apparatus, printing method and method of generating dither mask Sep. 24, 2013
8537412 Printing control device Sep. 17, 2013
8532379 Image processing apparatus and image processing method Sep. 10, 2013
8520261 Controller and halftone dot signal generating method capable of controlling glossiness of image Aug. 27, 2013
8520277 Image processing apparatus, image processing method, and storage medium Aug. 27, 2013
8514454 Image processing apparatus and method for selecting a processing mode based on number of relative movements of a recording head Aug. 20, 2013
8508809 Image reading apparatus and image reading method Aug. 13, 2013
8508797 Image processing device and image processing method Aug. 13, 2013
8503031 Image processing apparatus and image processing method Aug. 6, 2013
8482792 Image forming apparatus and control method thereof Jul. 9, 2013
8482798 Image processing apparatus and image processing method to suppress color nonuniformity Jul. 9, 2013
8482801 Storage of stamp information for error diffusion Jul. 9, 2013
8477374 Cost-effective binary printer models for multi-color printers by improved reflectance modeling and patch clustering Jul. 2, 2013
8477378 Image processing apparatus and image processing method Jul. 2, 2013
8472080 Image forming method and system for performing different halftoning processes according to developer Jun. 25, 2013
8467100 Halftoner block employing average values and shifts Jun. 18, 2013
8467102 Image forming apparatus and image correction method for correcting scan-line position error Jun. 18, 2013
8456693 Image-processing apparatus and image-processing method Jun. 4, 2013
8451499 Multi-level image conversion using error-diffusion with improved speed by processing quadrangular image segments May. 28, 2013
8446653 Image forming apparatus and image forming method which prevent toner from peeling from a secondary color area of a multicolor image while the image is on the photosensitive member of the appar May. 21, 2013
8441688 Image processing apparatus and method thereof May. 14, 2013
8437046 Image processing apparatus and method for outputting an image subjected to pseudo-halftone processing May. 7, 2013
8432580 Error diffusion processing method and apparatus Apr. 30, 2013
8432563 Systems and methods for dynamically re-configuring imager and caching modules to optimize raster image processing performance Apr. 30, 2013
8427706 Error diffusion halftoning techniques and configurations Apr. 23, 2013
8422079 Image forming apparatus and image correction method for correcting scan-line position error with error diffusion Apr. 16, 2013
8422080 Image processing apparatus and image processing method in which composite tone pixel data is provided based on tone pixel data generated by error diffusion processing and dither processing Apr. 16, 2013
8416457 Printing apparatus, printing data generating apparatus, printing method and program thereof Apr. 9, 2013

1 2 3 4 5 6 7 8 9 10

  Recently Added Patents
Methods and apparatus for monitoring communication through identification of priority-ranked keywords
Display panel and gate driving circuit and driving method for gate driving circuit
Information processing apparatus and update information obtainment method
Stacked magnetoresistance device responsive to a magnetic field generally perpendicular to a side face running along a channel of the device
Image processing apparatus, remote management system, license update method, and computer program product
Package for product
Pattern transfer apparatus and method for fabricating semiconductor device
  Randomly Featured Patents
Method of making iron powder
Textile apron and method of making same
Aligning method of ferroelectric liquid crystal display and ferroelectric liquid crystal display apparatus using the same
Adjustable waterbed mattress support
Actuating means for a motor vehicle locking brake
Process for connecting electric contact points using anodic bonding
Method for improving primary memory and/or learning
Arrangement for predicting failure in fluorescent lamp systems