FR1605174A - - Google Patents

Info

Publication number
FR1605174A
FR1605174A FR1605174DA FR1605174A FR 1605174 A FR1605174 A FR 1605174A FR 1605174D A FR1605174D A FR 1605174DA FR 1605174 A FR1605174 A FR 1605174A
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.)
Expired
Application number
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 filed Critical
Application granted granted Critical
Publication of FR1605174A publication Critical patent/FR1605174A/fr
Expired 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
FR1605174D 1967-03-22 1968-03-21 Expired FR1605174A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62503867A 1967-03-22 1967-03-22

Publications (1)

Publication Number Publication Date
FR1605174A true FR1605174A (fr) 1973-04-16

Family

ID=24504320

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1605174D Expired FR1605174A (fr) 1967-03-22 1968-03-21

Country Status (7)

Country Link
CH (1) CH486322A (fr)
DE (1) DE1772022C3 (fr)
DK (1) DK145136C (fr)
FR (1) FR1605174A (fr)
GB (1) GB1206681A (fr)
NL (1) NL152670B (fr)
SE (1) SE326892B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4189752A (en) * 1973-11-12 1980-02-19 Printing Developments, Inc. Electronic screening with galvanometer recorders
FR2467078A1 (fr) * 1979-10-11 1981-04-17 Machulka Grigory Dispositif a laser pour la fabrication des formes d'impression

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983319A (en) * 1973-11-12 1976-09-28 Printing Developments, Inc. Electronic screening for image reproduction
DE2844158C3 (de) 1978-10-10 1981-10-15 Burda Verwaltungs Kg Schutterwald, 7600 Offenburg Verfahren zur Reproduktion von Originalvorlagen welche bezüglich ihres Farbgehaltes nach einem Dreibereichsverfahren abgetastet werden
ATE25453T1 (de) * 1981-10-19 1987-02-15 Hell Rudolf Dr Ing Gmbh Verfahren zur verbesserung der kontrastanhebung.
US4701808A (en) * 1983-11-01 1987-10-20 Canon Kabushiki Kaisha Image processing apparatus with variable magnification and gray level processing
DE4038057C2 (de) * 1990-11-29 1997-05-15 Hell Ag Linotype Verfahren zur Generierung und Speicherung von digitalisierten Dichteschwellwerten zur Rasterung einer Halbtonbildvorlage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4189752A (en) * 1973-11-12 1980-02-19 Printing Developments, Inc. Electronic screening with galvanometer recorders
FR2467078A1 (fr) * 1979-10-11 1981-04-17 Machulka Grigory Dispositif a laser pour la fabrication des formes d'impression

Also Published As

Publication number Publication date
DE1772022B2 (fr) 1975-03-06
DE1772022C3 (de) 1975-10-16
DK145136B (da) 1982-09-13
SE326892B (fr) 1970-08-03
DE1772022A1 (de) 1970-08-06
DK145136C (da) 1983-03-28
GB1206681A (en) 1970-09-30
NL6804028A (fr) 1968-09-23
CH486322A (de) 1970-02-28
NL152670B (nl) 1977-03-15

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