JPH0314266B2 - - Google Patents

Info

Publication number
JPH0314266B2
JPH0314266B2 JP58241635A JP24163583A JPH0314266B2 JP H0314266 B2 JPH0314266 B2 JP H0314266B2 JP 58241635 A JP58241635 A JP 58241635A JP 24163583 A JP24163583 A JP 24163583A JP H0314266 B2 JPH0314266 B2 JP H0314266B2
Authority
JP
Japan
Prior art keywords
matrix
dots
dot
pixel pattern
pixel
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 - Lifetime
Application number
JP58241635A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60157375A (ja
Inventor
Masayuki Hisatake
Haruhiko Moriguchi
Toshiji Inui
Akio Noguchi
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.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox Co Ltd
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 Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP58241635A priority Critical patent/JPS60157375A/ja
Priority to US06/678,877 priority patent/US4622595A/en
Publication of JPS60157375A publication Critical patent/JPS60157375A/ja
Publication of JPH0314266B2 publication Critical patent/JPH0314266B2/ja
Granted 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)
  • Dot-Matrix Printers And Others (AREA)
  • Color, Gradation (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Image Processing (AREA)
JP58241635A 1983-12-21 1983-12-21 中間調表現方式 Granted JPS60157375A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP58241635A JPS60157375A (ja) 1983-12-21 1983-12-21 中間調表現方式
US06/678,877 US4622595A (en) 1983-12-21 1984-12-06 Image display unit capable of tone reproduction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58241635A JPS60157375A (ja) 1983-12-21 1983-12-21 中間調表現方式

Publications (2)

Publication Number Publication Date
JPS60157375A JPS60157375A (ja) 1985-08-17
JPH0314266B2 true JPH0314266B2 (US20030157376A1-20030821-M00001.png) 1991-02-26

Family

ID=17077244

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58241635A Granted JPS60157375A (ja) 1983-12-21 1983-12-21 中間調表現方式

Country Status (2)

Country Link
US (1) US4622595A (US20030157376A1-20030821-M00001.png)
JP (1) JPS60157375A (US20030157376A1-20030821-M00001.png)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4651287A (en) * 1984-06-14 1987-03-17 Tsao Sherman H Digital image processing algorithm for output devices with discrete halftone gray scale capability
JPS6265563A (ja) * 1985-09-18 1987-03-24 Canon Inc 中間調再現方式
US5175807A (en) * 1986-12-04 1992-12-29 Quantel Limited Video signal processing with added probabilistic dither
US4965672A (en) * 1987-05-11 1990-10-23 The Mead Corporation Method and apparatus for halftone imaging
US5020113A (en) * 1988-08-08 1991-05-28 Hughes Aircraft Company Maskable bilevel correlators
US5254982A (en) * 1989-01-13 1993-10-19 International Business Machines Corporation Error propagated image halftoning with time-varying phase shift
EP0382581B1 (en) * 1989-02-10 1996-05-08 Canon Kabushiki Kaisha Image processing apparatus
US5130821A (en) * 1990-04-16 1992-07-14 Eastman Kodak Company Method and apparatus for digital halftoning employing density distribution for selection of a threshold template
JP2648400B2 (ja) * 1990-10-12 1997-08-27 三菱電機株式会社 画像処理装置
US5191640A (en) * 1990-12-26 1993-03-02 Xerox Corporation Method for optimal discrete rendering of images
DE69231481T2 (de) * 1991-07-10 2001-02-08 Fujitsu Ltd Bilderzeugungsgerät
JP6409379B2 (ja) * 2014-07-11 2018-10-24 コニカミノルタ株式会社 インクジェットヘッド及びインクジェット記録装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5481013A (en) * 1977-12-12 1979-06-28 Hitachi Ltd Intermediate tone recording sysem
JPS56127468A (en) * 1980-03-12 1981-10-06 Sony Corp Drive circuit of thermal head
JPS5775063A (en) * 1980-10-27 1982-05-11 Matsushita Graphic Commun Syst Inc Picture signal processing device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1448112A (en) * 1973-02-13 1976-09-02 Int Publishing Corp Ltd Electronic screening
US4245258A (en) * 1979-11-05 1981-01-13 Xerox Corporation Method and apparatus for reduction of false contours in electrically screened images
US4491875A (en) * 1980-10-30 1985-01-01 Canon Kabushiki Kaisha Apparatus and method for tonal image processing
US4389677A (en) * 1980-12-08 1983-06-21 Ncr Canada Ltd - Ncr Canada Ltee Method and apparatus for removing erroneous elements from digital images
ATE14164T1 (de) * 1981-09-12 1985-07-15 Hell Rudolf Dr Ing Gmbh Verfahren zur herstellung von druckformen mittels unregelmaessig verteilter druckpunkte.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5481013A (en) * 1977-12-12 1979-06-28 Hitachi Ltd Intermediate tone recording sysem
JPS56127468A (en) * 1980-03-12 1981-10-06 Sony Corp Drive circuit of thermal head
JPS5775063A (en) * 1980-10-27 1982-05-11 Matsushita Graphic Commun Syst Inc Picture signal processing device

Also Published As

Publication number Publication date
US4622595A (en) 1986-11-11
JPS60157375A (ja) 1985-08-17

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