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WO1990006032A3 - Unite de serigraphie electronique pour arts graphiques - Google Patents

Unite de serigraphie electronique pour arts graphiques Download PDF

Info

Publication number
WO1990006032A3
WO1990006032A3 PCT/US1989/004936 US8904936W WO9006032A3 WO 1990006032 A3 WO1990006032 A3 WO 1990006032A3 US 8904936 W US8904936 W US 8904936W WO 9006032 A3 WO9006032 A3 WO 9006032A3
Authority
WO
WIPO (PCT)
Prior art keywords
image
contone
bit
handler
screener
Prior art date
Application number
PCT/US1989/004936
Other languages
English (en)
Other versions
WO1990006032A2 (fr
Inventor
Edward Maurice Granger
John Franklin Hamilton Jr
Larry Greg Wash
Original Assignee
Eastman Kodak 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
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to EP90900480A priority Critical patent/EP0444135B1/fr
Priority to DE68928366T priority patent/DE68928366T2/de
Publication of WO1990006032A2 publication Critical patent/WO1990006032A2/fr
Publication of WO1990006032A3 publication Critical patent/WO1990006032A3/fr

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
    • H04N1/4058—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 with details for producing a halftone screen at an oblique angle

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
  • Facsimiles In General (AREA)
  • Liquid Crystal (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Color Image Communication Systems (AREA)

Abstract

Un appareil d'impression en demi-teinte utilise un tampon (913) de ligne en demi-teinte, un manipulateur d'images (930), un manipulateur de sérigraphie (950) ainsi qu'une mémoire de caractères (970). Ledit tampon de ligne en demi-teinte fournit successivement chaque valeur de demi-teinte existant dans une ligne d'une image à sérigraphier. Ledit manipulateur d'images suit l'emplacemnt d'un bit d'image produit par ladite unité de sérigraphie. Ledit manipulateur de sérigraphie détermine le bit correct, correspondant à l'emplacement du bit d'image, lequel est à échantillonner dans n'importe quelle configuration de point en demi-teinte différente pour chaque valeur de demi-teinte différente. On utilise chaque valeur de demi-teinte pour sélectionner une configuration de point en demi-teinte de référence particulière à echantillonner, et on utilise les coordonnées d'échantillonnage pour accéder à un bit particulier dans cette configuration.
PCT/US1989/004936 1988-11-16 1989-11-13 Unite de serigraphie electronique pour arts graphiques WO1990006032A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP90900480A EP0444135B1 (fr) 1988-11-16 1989-11-13 Unite de serigraphie electronique pour arts graphiques
DE68928366T DE68928366T2 (de) 1988-11-16 1989-11-13 Elektronische vorrichtung zur halbtonrasterung graphischer vorlagen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US272,568 1988-11-16
US07/272,568 US4918622A (en) 1988-11-16 1988-11-16 Electronic graphic arts screener

Publications (2)

Publication Number Publication Date
WO1990006032A2 WO1990006032A2 (fr) 1990-05-31
WO1990006032A3 true WO1990006032A3 (fr) 1990-07-12

Family

ID=23040361

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1989/004936 WO1990006032A2 (fr) 1988-11-16 1989-11-13 Unite de serigraphie electronique pour arts graphiques

Country Status (6)

Country Link
US (1) US4918622A (fr)
EP (1) EP0444135B1 (fr)
JP (1) JPH04501797A (fr)
AT (1) ATE158912T1 (fr)
DE (1) DE68928366T2 (fr)
WO (1) WO1990006032A2 (fr)

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Also Published As

Publication number Publication date
DE68928366T2 (de) 1998-04-16
WO1990006032A2 (fr) 1990-05-31
EP0444135B1 (fr) 1997-10-01
DE68928366D1 (de) 1997-11-06
US4918622A (en) 1990-04-17
ATE158912T1 (de) 1997-10-15
EP0444135A1 (fr) 1991-09-04
JPH04501797A (ja) 1992-03-26

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