FR2007849A1 - - Google Patents

Info

Publication number
FR2007849A1
FR2007849A1 FR6914237A FR6914237A FR2007849A1 FR 2007849 A1 FR2007849 A1 FR 2007849A1 FR 6914237 A FR6914237 A FR 6914237A FR 6914237 A FR6914237 A FR 6914237A FR 2007849 A1 FR2007849 A1 FR 2007849A1
Authority
FR
France
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.)
Withdrawn
Application number
FR6914237A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of FR2007849A1 publication Critical patent/FR2007849A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
    • H04N1/4055—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern
    • H04N1/4057—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern the pattern being a mixture of differently sized sub-patterns, e.g. spots having only a few different diameters

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
FR6914237A 1968-05-04 1969-05-05 Withdrawn FR2007849A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1772367A DE1772367C3 (de) 1968-05-04 1968-05-04 Verfahren zur gerasterten Reproduktion von Halbtonbildern

Publications (1)

Publication Number Publication Date
FR2007849A1 true FR2007849A1 (de) 1970-01-16

Family

ID=5701220

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6914237A Withdrawn FR2007849A1 (de) 1968-05-04 1969-05-05

Country Status (5)

Country Link
US (1) US3681650A (de)
DE (1) DE1772367C3 (de)
FR (1) FR2007849A1 (de)
GB (1) GB1269093A (de)
NL (1) NL160402C (de)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0259695A2 (de) * 1986-08-25 1988-03-16 Dainippon Screen Mfg. Co., Ltd. Verfahren und Vorrichtung zur Erzeugung von Bilddaten, die beim Gradationsbildaufzeichnen verwendet werden
FR2604537A1 (fr) * 1986-09-30 1988-04-01 Lesouef Serge Procede pour obtenir des impressions degradees en imprimerie
EP0270259A2 (de) * 1986-12-04 1988-06-08 Quantel Limited Videosignalverarbeitungssysteme
EP0274196A1 (de) * 1986-11-26 1988-07-13 Crosfield Electronics Limited Erzeugung von Halbtonreproduktionen
EP0341984A2 (de) * 1988-05-11 1989-11-15 Canon Kabushiki Kaisha Bildverarbeitungsverfahren und -vorrichtung
EP0357191A2 (de) * 1988-09-01 1990-03-07 Adobe Systems Inc. Farbauswahlverfahren für Anzeige und Druckausgabe
WO1990006033A2 (en) * 1988-11-16 1990-05-31 Eastman Kodak Company Apparatus for addressing a font to suppress moire patterns occurring thereby and a method for use therein
EP0457229A2 (de) * 1990-05-18 1991-11-21 Hitachi, Ltd. Druckgerät und Informationverarbeitungsgerät mit demselben
WO1992016070A1 (de) * 1991-03-09 1992-09-17 Linotype-Hell Ag Verfahren und vorrichtung zur aufzeichnung gerasterter bilder
WO1992017979A1 (en) * 1991-04-01 1992-10-15 Eastman Kodak Company Method for generating halftone image data with randomly selected threshold matrices
EP0547382A1 (de) * 1991-12-19 1993-06-23 E.I. Du Pont De Nemours And Company Verfahren zur Erzeugung von Mehrfachtonbildern
EP0581574A1 (de) * 1992-07-27 1994-02-02 Tektronix, Inc. System und Verfahren zum intensitätsvariablen Drucken
EP0597596A3 (en) * 1992-10-15 1994-06-15 Digital Equipment Corp Imaging system with translated input levels.
EP0650289A1 (de) * 1993-10-04 1995-04-26 Eastman Kodak Company Verfahren und Gerät zur Erzeugung von Halbtonmustern für eine Multipegelausgabeeinrichtung
EP0652671A2 (de) * 1993-11-05 1995-05-10 International Business Machines Corporation Umsetzung von digitalen Farbbildern
EP0670654A1 (de) * 1994-03-02 1995-09-06 Hewlett-Packard Company Erzeugung von Mehrfachtonbildern
EP0677950A1 (de) * 1994-04-15 1995-10-18 Hewlett-Packard Company System und Verfahren zum Zittern und zur Quantisierung von Bilddaten zur Optimierung der visuellen Qualität eines rückgewonnenen Bildes
EP0741485A1 (de) * 1995-05-05 1996-11-06 Agfa-Gevaert N.V. Verfahren zur Erzeugung von halbtongerasterten Bildeinblendungen für Kombination mit halbtongerasterten Bildern
EP0859507A2 (de) * 1996-12-18 1998-08-19 Seiko Epson Corporation Mehrstufige Rasterung für Farblaserdrucker

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3803583A (en) * 1972-09-28 1974-04-09 Redactron Corp Display system for several fonts of characters
US3911480A (en) * 1972-12-08 1975-10-07 John P Brucker Generating screened half-tones by scanning
JPS4998521A (de) * 1973-01-22 1974-09-18
US4084259A (en) * 1973-11-30 1978-04-11 The Mead Corporation Apparatus for dot matrix recording
US3961132A (en) * 1974-07-15 1976-06-01 Log Etronics Inc. Sequential image-modulated dot-area recording
US4051536A (en) * 1975-03-14 1977-09-27 Xerox Corporation Electronic halftone imaging system
US3977007A (en) * 1975-06-02 1976-08-24 Teletype Corporation Gray tone generation
US4059357A (en) * 1976-04-02 1977-11-22 Beckman Instruments, Inc. Densitometer calibrated reference standard
US4196452A (en) * 1978-12-01 1980-04-01 Xerox Corporation Tone error control for image contour removal
DE3030648C2 (de) * 1980-08-13 1983-11-10 Siemens AG, 1000 Berlin und 8000 München Verfahren und Anordnung zum Darstellen von Grauwerten bei einer Faksimile-Übertragung
JPS57160264A (en) * 1981-03-30 1982-10-02 Canon Inc Recorder of half tone picture
US4661859A (en) * 1981-06-03 1987-04-28 Xerox Corporation Pulse width modulation greyscale system for halftone printer
DE3317579A1 (de) * 1982-05-14 1983-11-17 Canon K.K., Tokyo Verfahren und einrichtung zur bilderzeugung
US4560997A (en) * 1982-07-07 1985-12-24 Canon Kabushiki Kaisha Method and apparatus for forming a pattern
DE3326557A1 (de) * 1982-07-23 1984-01-26 Canon K.K., Tokyo Verfahren und einrichtung zur bilderzeugung
DE3326330C2 (de) * 1982-07-23 1994-06-09 Canon Kk Verfahren zur Erzeugung eines Graustufenbildes
JPS5941970A (ja) * 1982-09-01 1984-03-08 Canon Inc 画像形成方法及び装置
JPS5952658A (ja) * 1982-09-18 1984-03-27 Canon Inc 画像形成装置
US4555802A (en) * 1983-01-10 1985-11-26 International Business Machines Corporation Compaction and decompaction of non-coded information bearing signals
GB2139450B (en) * 1983-03-08 1987-12-16 Canon Kk Color picture forming apparatus
JPS60152172A (ja) * 1984-01-19 1985-08-10 Canon Inc カラ−画像形成装置
JPS6125365A (ja) * 1984-07-13 1986-02-04 Canon Inc 中間調画像形成方法
US4686538A (en) * 1984-10-31 1987-08-11 Canon Kabushiki Kaisha Tone recording method
JPS61170185A (ja) * 1985-01-23 1986-07-31 Victor Co Of Japan Ltd 画素情報処理方式
US5175807A (en) * 1986-12-04 1992-12-29 Quantel Limited Video signal processing with added probabilistic dither
USH996H (en) 1987-01-20 1991-11-05 Recognition Equipment Incorporated High resolution page image display system
JPH0743763B2 (ja) * 1987-11-07 1995-05-15 大日本スクリーン製造株式会社 ルックアップテーブルによる階調変換回路
DE3738014A1 (de) * 1987-11-09 1989-05-18 Winrich Dipl Ing Gall Verfahren zur erzeugung farbiger bilder auf einer traegerflaeche
US5642436A (en) * 1990-07-18 1997-06-24 Linotype-Hell Ag Method for generating and storing digitalized density threshold values for the rastering of a half-tone picture original
US5193011A (en) * 1990-10-03 1993-03-09 Xerox Corporation Method and apparatus for producing variable width pulses to produce an image having gray levels
US5914731A (en) * 1993-09-30 1999-06-22 Canon Kabushiki Kaisha Data recording using randomized variations to prevent visual artifacts due to non-uniformities in a printing apparatus
US5625397A (en) * 1994-11-23 1997-04-29 Iris Graphics, Inc. Dot on dot ink jet printing using inks of differing densities
JPH08237483A (ja) * 1994-12-01 1996-09-13 Xerox Corp イメージデータを処理するためのシステム及び方法
EP0781034B1 (de) * 1995-12-21 2004-03-24 Canon Kabushiki Kaisha Bildverarbeitungsgerät und -verfahren
US6603564B1 (en) * 1998-03-12 2003-08-05 Brother Kogyo Kabushiki Kaisha Printing device, printing system, and storage medium
US6025922A (en) * 1998-12-18 2000-02-15 Electronics For Imaging Reduction of banding in printed images
JP3969981B2 (ja) * 2000-09-22 2007-09-05 キヤノン株式会社 電子源の駆動方法、駆動回路、電子源および画像形成装置
JP3969985B2 (ja) 2000-10-04 2007-09-05 キヤノン株式会社 電子源及び画像形成装置の駆動方法、並びに画像形成装置
JP4116265B2 (ja) * 2001-05-16 2008-07-09 東芝テック株式会社 画像処理方法及び画像処理装置

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0259695A3 (en) * 1986-08-25 1990-03-07 Dainippon Screen Mfg. Co., Ltd. Method of and apparatus for generating image data used to record an image having gradation
EP0259695A2 (de) * 1986-08-25 1988-03-16 Dainippon Screen Mfg. Co., Ltd. Verfahren und Vorrichtung zur Erzeugung von Bilddaten, die beim Gradationsbildaufzeichnen verwendet werden
FR2604537A1 (fr) * 1986-09-30 1988-04-01 Lesouef Serge Procede pour obtenir des impressions degradees en imprimerie
EP0264319A1 (de) * 1986-09-30 1988-04-20 Serge Philippe Lesouef Verfahren zur Erzielung degradierter Abdrücke bei der Druckerei
EP0274196A1 (de) * 1986-11-26 1988-07-13 Crosfield Electronics Limited Erzeugung von Halbtonreproduktionen
US4821109A (en) * 1986-11-26 1989-04-11 Wisconsin Alumni Research Foundation Generating half-tone representations
EP0270259A2 (de) * 1986-12-04 1988-06-08 Quantel Limited Videosignalverarbeitungssysteme
EP0270259A3 (en) * 1986-12-04 1990-01-31 Quantel Limited Improvements relating to video signal processing systems
EP0341984A3 (de) * 1988-05-11 1991-03-20 Canon Kabushiki Kaisha Bildverarbeitungsverfahren und -vorrichtung
EP0603167A1 (de) * 1988-05-11 1994-06-22 Canon Kabushiki Kaisha Bildverarbeitungsverfahren und -vorrichtung
EP0341984A2 (de) * 1988-05-11 1989-11-15 Canon Kabushiki Kaisha Bildverarbeitungsverfahren und -vorrichtung
US5159470A (en) * 1988-05-11 1992-10-27 Canon Kabushiki Kaisha Image processing method and apparatus with reduction of granular noise, etc.
EP0357191A2 (de) * 1988-09-01 1990-03-07 Adobe Systems Inc. Farbauswahlverfahren für Anzeige und Druckausgabe
EP0357191A3 (de) * 1988-09-01 1991-11-06 Adobe Systems Inc. Farbauswahlverfahren für Anzeige und Druckausgabe
WO1990006033A2 (en) * 1988-11-16 1990-05-31 Eastman Kodak Company Apparatus for addressing a font to suppress moire patterns occurring thereby and a method for use therein
WO1990006033A3 (en) * 1988-11-16 1990-07-26 Eastman Kodak Co Apparatus for addressing a font to suppress moire patterns occurring thereby and a method for use therein
EP0457229A2 (de) * 1990-05-18 1991-11-21 Hitachi, Ltd. Druckgerät und Informationverarbeitungsgerät mit demselben
EP0457229A3 (en) * 1990-05-18 1993-03-03 Hitachi, Ltd. Printing apparatus and information processing apparatus using the same
WO1992016070A1 (de) * 1991-03-09 1992-09-17 Linotype-Hell Ag Verfahren und vorrichtung zur aufzeichnung gerasterter bilder
WO1992017979A1 (en) * 1991-04-01 1992-10-15 Eastman Kodak Company Method for generating halftone image data with randomly selected threshold matrices
EP0547382A1 (de) * 1991-12-19 1993-06-23 E.I. Du Pont De Nemours And Company Verfahren zur Erzeugung von Mehrfachtonbildern
EP0581574A1 (de) * 1992-07-27 1994-02-02 Tektronix, Inc. System und Verfahren zum intensitätsvariablen Drucken
EP0597596A3 (en) * 1992-10-15 1994-06-15 Digital Equipment Corp Imaging system with translated input levels.
US5586203A (en) * 1993-10-04 1996-12-17 Eastman Kodak Company Method and apparatus for generating a halftone pattern for a multi-level output device
EP0650289A1 (de) * 1993-10-04 1995-04-26 Eastman Kodak Company Verfahren und Gerät zur Erzeugung von Halbtonmustern für eine Multipegelausgabeeinrichtung
EP0652671A2 (de) * 1993-11-05 1995-05-10 International Business Machines Corporation Umsetzung von digitalen Farbbildern
EP0652671A3 (de) * 1993-11-05 1995-06-21 Ibm Umsetzung von digitalen Farbbildern.
US5619230A (en) * 1993-11-05 1997-04-08 International Business Machines Corporation System and method for real-time image display palette mapping
EP0670654A1 (de) * 1994-03-02 1995-09-06 Hewlett-Packard Company Erzeugung von Mehrfachtonbildern
EP0677950A1 (de) * 1994-04-15 1995-10-18 Hewlett-Packard Company System und Verfahren zum Zittern und zur Quantisierung von Bilddaten zur Optimierung der visuellen Qualität eines rückgewonnenen Bildes
US5649083A (en) * 1994-04-15 1997-07-15 Hewlett-Packard Company System and method for dithering and quantizing image data to optimize visual quality of a color recovered image
EP0741485A1 (de) * 1995-05-05 1996-11-06 Agfa-Gevaert N.V. Verfahren zur Erzeugung von halbtongerasterten Bildeinblendungen für Kombination mit halbtongerasterten Bildern
EP0859507A2 (de) * 1996-12-18 1998-08-19 Seiko Epson Corporation Mehrstufige Rasterung für Farblaserdrucker
EP0859507A3 (de) * 1996-12-18 2001-03-07 Seiko Epson Corporation Mehrstufige Rasterung für Farblaserdrucker

Also Published As

Publication number Publication date
GB1269093A (en) 1972-03-29
DE1772367A1 (de) 1970-12-17
US3681650A (en) 1972-08-01
DE1772367C3 (de) 1974-10-31
NL160402B (nl) 1979-05-15
NL160402C (nl) 1979-10-15
NL6906683A (de) 1969-11-06
DE1772367B2 (de) 1974-03-21

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Legal Events

Date Code Title Description
CN Change in juridical nature
ST Notification of lapse