DE68927335T2 - Stückweise Druckbildvergrösserung für Punktmatrixdrucker - Google Patents

Stückweise Druckbildvergrösserung für Punktmatrixdrucker

Info

Publication number
DE68927335T2
DE68927335T2 DE68927335T DE68927335T DE68927335T2 DE 68927335 T2 DE68927335 T2 DE 68927335T2 DE 68927335 T DE68927335 T DE 68927335T DE 68927335 T DE68927335 T DE 68927335T DE 68927335 T2 DE68927335 T2 DE 68927335T2
Authority
DE
Germany
Prior art keywords
piecewise
enlargement
print image
dot matrix
matrix printers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE68927335T
Other languages
English (en)
Other versions
DE68927335D1 (de
Inventor
Charles Cheng-Yuan Tung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hewlett Packard Development Co LP
Original Assignee
Hewlett Packard Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26926349&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE68927335(T2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US07/232,814 external-priority patent/US4847641A/en
Application filed by Hewlett Packard Co filed Critical Hewlett Packard Co
Application granted granted Critical
Publication of DE68927335D1 publication Critical patent/DE68927335D1/de
Publication of DE68927335T2 publication Critical patent/DE68927335T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/12—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers
    • G06K15/128—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers generating or processing printable items, e.g. characters
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/12—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K2215/00—Arrangements for producing a permanent visual presentation of the output data
    • G06K2215/0002—Handling the output data
    • G06K2215/002—Generic data access
    • G06K2215/0022—Generic data access characterised by the storage means used
    • G06K2215/0025—Removable memories, e.g. cartridges
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K2215/00—Arrangements for producing a permanent visual presentation of the output data
    • G06K2215/0002—Handling the output data
    • G06K2215/004—Generic data transformation
    • G06K2215/006—Anti-aliasing raster data

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Color, Gradation (AREA)
DE68927335T 1988-08-16 1989-08-02 Stückweise Druckbildvergrösserung für Punktmatrixdrucker Expired - Fee Related DE68927335T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/232,814 US4847641A (en) 1988-08-16 1988-08-16 Piece-wise print image enhancement for dot matrix printers
US07/374,494 US5005139A (en) 1988-08-16 1989-06-30 Piece-wise print image enhancement for dot matrix printers

Publications (2)

Publication Number Publication Date
DE68927335D1 DE68927335D1 (de) 1996-11-21
DE68927335T2 true DE68927335T2 (de) 1997-03-06

Family

ID=26926349

Family Applications (2)

Application Number Title Priority Date Filing Date
DE68929094T Expired - Fee Related DE68929094T2 (de) 1988-08-16 1989-08-02 Stückweise Druckbildverbesserung für Punktmatrixdrucker
DE68927335T Expired - Fee Related DE68927335T2 (de) 1988-08-16 1989-08-02 Stückweise Druckbildvergrösserung für Punktmatrixdrucker

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE68929094T Expired - Fee Related DE68929094T2 (de) 1988-08-16 1989-08-02 Stückweise Druckbildverbesserung für Punktmatrixdrucker

Country Status (3)

Country Link
US (1) US5005139A (de)
EP (2) EP0710565B1 (de)
DE (2) DE68929094T2 (de)

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US5696845A (en) * 1993-12-17 1997-12-09 Xerox Corporation Method for design and implementation of an image resolution enhancement system that employs statistically generated look-up tables
US5579445A (en) * 1993-12-17 1996-11-26 Xerox Corporation Image resolution conversion method that employs statistically generated multiple morphological filters
US5387985A (en) * 1993-12-17 1995-02-07 Xerox Corporation Non-integer image resolution conversion using statistically generated look-up tables
US5359423A (en) * 1993-12-17 1994-10-25 Xerox Corporation Method for statistical generation of density preserving templates for print enhancement
US5537495A (en) * 1994-03-11 1996-07-16 Hewlett-Packard Company Pixel correction and smoothing method
US5483355A (en) * 1994-03-11 1996-01-09 Hewlett-Packard Co. Pixel correctional and smoothing method
US5440407A (en) * 1994-03-11 1995-08-08 Hewlett-Packard Company Pixel correction and smoothing method
JP3029533B2 (ja) * 1994-04-12 2000-04-04 シャープ株式会社 画像形成装置
US5729270A (en) * 1994-07-27 1998-03-17 Lexmark International, Inc. Toner conservation by pel modulation with operator control
US6389163B1 (en) * 1994-11-18 2002-05-14 Xerox Corporation Method and apparatus for automatic image segmentation using template matching filters
US6072510A (en) * 1994-11-23 2000-06-06 Compaq Computer Corporation Anti-aliasing apparatus and method using pixel subset analysis and center pixel correction including specialized sample window
US5596684A (en) * 1994-11-23 1997-01-21 Compaq Computer Corporation Anti-aliasing apparatus and method using fast scan-line memory mapping for sampling pixel patterns
US5680485A (en) * 1994-12-19 1997-10-21 Xerox Corporation Method and apparatus employing erosion-based filter pairs for image mapping
JPH08238797A (ja) * 1995-03-03 1996-09-17 Fujitsu Ltd 画像形成装置
US5703695A (en) * 1995-03-20 1997-12-30 Nguyen; Hugh P. Multi-dot dither matrix generation
US5526468A (en) * 1995-03-27 1996-06-11 Lexmark International, Inc. Method and apparatus for smoothing an expanded bitmap for two-state image data
US5687297A (en) * 1995-06-29 1997-11-11 Xerox Corporation Multifunctional apparatus for appearance tuning and resolution reconstruction of digital images
US5666470A (en) * 1995-06-29 1997-09-09 Xerox Corporation Method and apparatus for appearance tuning of bitmap images
US5920336A (en) * 1995-09-12 1999-07-06 Hewlett-Packard Company Beam deflecting for resolution enhancement and banding reduction in a laser printer
US5742703A (en) * 1995-10-11 1998-04-21 Xerox Corporation Method and apparatus for the resolution enhancement of gray-scale images that include text and line art
US5754751A (en) * 1996-03-07 1998-05-19 Hewlett-Packard Company Software-based procedure and apparatus for enhancement of a gray level image
US5657430A (en) * 1996-03-07 1997-08-12 Hewlett-Packard Company Software-based procedure for conversion of a scalable font character bitmap to a gray level bitmap
JP3305576B2 (ja) * 1996-06-26 2002-07-22 シャープ株式会社 画質測定方法
US6021256A (en) * 1996-09-03 2000-02-01 Eastman Kodak Company Resolution enhancement system for digital images
US5937147A (en) * 1996-09-03 1999-08-10 Eastman Kodak Company Printing of enhanced images
US5862305A (en) * 1996-09-26 1999-01-19 Xerox Corporation Logic filters for resolution conversion of digital images
US5758034A (en) * 1996-09-26 1998-05-26 Xerox Corporation Video path architecture including logic filters for resolution conversion of digital images
JP3319959B2 (ja) * 1996-10-16 2002-09-03 シャープ株式会社 画像形成装置
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JP3634940B2 (ja) 1997-05-12 2005-03-30 株式会社日立製作所 画像記録装置
US6678426B1 (en) 1997-05-13 2004-01-13 Hewlett-Packard Development Company, L.P. Programmable mapping of lower resolution digital data to a higher resolution for output on a lower resolution device
US5973796A (en) * 1998-01-13 1999-10-26 Hewlett-Packard Company Scanner carriage mirror mounting to reduce footprint
US6266153B1 (en) 1998-05-12 2001-07-24 Xerox Corporation Image forming device having a reduced toner consumption mode
JP3679621B2 (ja) * 1998-09-14 2005-08-03 株式会社リコー 画像形成装置
US6978045B1 (en) 1998-10-02 2005-12-20 Minolta Co., Ltd. Image-processing apparatus
US6438273B1 (en) 1998-12-23 2002-08-20 Xerox Corporation Method and apparatus for using rotatable templates within look-up tables to enhance image reproduction
US6343159B1 (en) 1998-12-23 2002-01-29 Xerox Corporation Method and apparatus for modeling and reconstruction of halftoned images
US6356654B1 (en) 1998-12-23 2002-03-12 Xerox Corporation Systems and methods for template matching of multicolored images
US6363177B1 (en) 1998-12-30 2002-03-26 Xerox Corporation Systems and methods for rotating high addressability images
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US6295078B1 (en) 1999-05-26 2001-09-25 Hewlett-Packard Company Methods of providing lower resolution format data into a higher resolution format
US6678414B1 (en) 2000-02-17 2004-01-13 Xerox Corporation Loose-gray-scale template matching
US6834124B1 (en) 2000-10-16 2004-12-21 Xerox Corporation Adaptive image enhancement filter
US6738517B2 (en) 2000-12-19 2004-05-18 Xerox Corporation Document image segmentation using loose gray scale template matching
US6757431B2 (en) 2000-12-19 2004-06-29 Xerox Corporation Resolution conversion for anti-aliased images using loose gray scale template matching
US7139442B2 (en) * 2002-12-16 2006-11-21 Xerox Corporation Template matching applied to selector planes for multiple raster content (MRC) representation of documents
US7422310B2 (en) * 2003-04-25 2008-09-09 Hewlett-Packard Development Company, L.P. Methods and apparatus for selecting image enhancement techniques
US7483167B2 (en) * 2003-08-27 2009-01-27 Marvell International Ltd. Image forming apparatus for identifying undesirable toner placement
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Also Published As

Publication number Publication date
EP0356038A2 (de) 1990-02-28
EP0356038B1 (de) 1996-10-16
EP0356038A3 (de) 1990-12-05
US5005139A (en) 1991-04-02
EP0710565B1 (de) 1999-10-27
DE68929094D1 (de) 1999-12-02
EP0710565A3 (de) 1996-05-15
DE68927335D1 (de) 1996-11-21
EP0710565A2 (de) 1996-05-08
DE68929094T2 (de) 2000-02-10

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: HEWLETT-PACKARD CO. (N.D.GES.D.STAATES DELAWARE),

8327 Change in the person/name/address of the patent owner

Owner name: HEWLETT-PACKARD DEVELOPMENT CO., L.P., HOUSTON, TE

8339 Ceased/non-payment of the annual fee