IT7920898A0 - Procedimento per la conversione di un segnale video in un segnale bianco nero per la riproduzione in facsimile - Google Patents

Procedimento per la conversione di un segnale video in un segnale bianco nero per la riproduzione in facsimile

Info

Publication number
IT7920898A0
IT7920898A0 IT7920898A IT2089879A IT7920898A0 IT 7920898 A0 IT7920898 A0 IT 7920898A0 IT 7920898 A IT7920898 A IT 7920898A IT 2089879 A IT2089879 A IT 2089879A IT 7920898 A0 IT7920898 A0 IT 7920898A0
Authority
IT
Italy
Prior art keywords
converting
procedure
signal
facsimile reproduction
black white
Prior art date
Application number
IT7920898A
Other languages
English (en)
Other versions
IT1166686B (it
Original Assignee
Hell Rudolf Gmbh
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 Hell Rudolf Gmbh filed Critical Hell Rudolf Gmbh
Publication of IT7920898A0 publication Critical patent/IT7920898A0/it
Application granted granted Critical
Publication of IT1166686B publication Critical patent/IT1166686B/it

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
    • H04N1/40093—Modification of content of picture, e.g. retouching

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
IT20898/79A 1978-04-06 1979-03-12 Procedimento per la conversione di un segnale video in un segnale bianco nero per la riproduzione in facsimile IT1166686B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2814891A DE2814891C3 (de) 1978-04-06 1978-04-06 Verfahren zur Umwandlung eines Videosignals in ein Schwarz/Weiß-Signal

Publications (2)

Publication Number Publication Date
IT7920898A0 true IT7920898A0 (it) 1979-03-12
IT1166686B IT1166686B (it) 1987-05-06

Family

ID=6036313

Family Applications (1)

Application Number Title Priority Date Filing Date
IT20898/79A IT1166686B (it) 1978-04-06 1979-03-12 Procedimento per la conversione di un segnale video in un segnale bianco nero per la riproduzione in facsimile

Country Status (7)

Country Link
US (1) US4257070A (it)
JP (1) JPS54137216A (it)
AU (1) AU4577179A (it)
DE (1) DE2814891C3 (it)
FR (1) FR2422301A1 (it)
GB (1) GB2022956B (it)
IT (1) IT1166686B (it)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57145475A (en) * 1981-03-05 1982-09-08 Canon Inc Digital image reproducer
SE8404576L (sv) * 1983-09-23 1985-03-24 American Telephone & Telegraph Detaljdetektor for maskinvideo
US4688031A (en) * 1984-03-30 1987-08-18 Wang Laboratories, Inc. Monochromatic representation of color images
US4703318A (en) * 1984-03-30 1987-10-27 Wang Laboratories, Inc. Character-based monochromatic representation of color images
US4704637A (en) * 1985-06-21 1987-11-03 Canon Kabushiki Kaisha Image processing apparatus
US5515182A (en) * 1992-08-31 1996-05-07 Howtek, Inc. Rotary scanner
US5376830A (en) * 1993-09-17 1994-12-27 International Business Machines Corporation High frequency slope compensation circuit for current programmed converter
US5521809A (en) * 1993-09-17 1996-05-28 International Business Machines Corporation Current share circuit for DC to DC converters
US5563540A (en) * 1993-09-17 1996-10-08 International Business Machines Corporation Electronic switch having programmable means to reduce noise coupling
US7382915B2 (en) * 2004-03-16 2008-06-03 Xerox Corporation Color to grayscale conversion method and apparatus
US8179565B2 (en) * 2005-09-08 2012-05-15 Go Daddy Operating Company, LLC Document color and shades of gray optimization using outlining
US7502135B2 (en) * 2005-09-08 2009-03-10 The Go Daddy Group, Inc. Document color and shades of gray optimization using dithered monochrome surfaces
US7777917B2 (en) * 2005-09-08 2010-08-17 The Go Daddy Group, Inc. Document color and shades of gray optimization using solid monochrome colors

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL278517A (it) * 1961-05-16
US3472958A (en) * 1966-08-01 1969-10-14 Xerox Corp Facsimile system
US3757036A (en) * 1972-04-05 1973-09-04 Eg & G Inc Electrostatic recording method and apparatus
DE2450529C3 (de) * 1974-10-24 1979-01-25 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren und Vorrichtung zur Erzeugung binärer Signale
US4072818A (en) * 1975-06-10 1978-02-07 Westinghouse Electric Corp. System for converting tonal images to line drawings

Also Published As

Publication number Publication date
FR2422301A1 (fr) 1979-11-02
AU4577179A (en) 1979-10-11
IT1166686B (it) 1987-05-06
DE2814891A1 (de) 1979-10-18
US4257070A (en) 1981-03-17
DE2814891C3 (de) 1982-02-11
GB2022956A (en) 1979-12-19
GB2022956B (en) 1982-11-03
DE2814891B2 (de) 1981-05-27
JPS54137216A (en) 1979-10-24

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