FR2216738A1 - - Google Patents

Info

Publication number
FR2216738A1
FR2216738A1 FR7402358A FR7402358A FR2216738A1 FR 2216738 A1 FR2216738 A1 FR 2216738A1 FR 7402358 A FR7402358 A FR 7402358A FR 7402358 A FR7402358 A FR 7402358A FR 2216738 A1 FR2216738 A1 FR 2216738A1
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.)
Granted
Application number
FR7402358A
Other languages
French (fr)
Other versions
FR2216738B1 (enExample
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.)
MUIRHEAD Inc
Original Assignee
MUIRHEAD Inc
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 MUIRHEAD Inc filed Critical MUIRHEAD Inc
Publication of FR2216738A1 publication Critical patent/FR2216738A1/fr
Application granted granted Critical
Publication of FR2216738B1 publication Critical patent/FR2216738B1/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
    • H04N1/4056—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 varying in one dimension only, e.g. dash length, pulse width modulation [PWM]

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Facsimiles In General (AREA)
  • Facsimile Image Signal Circuits (AREA)
FR7402358A 1973-02-05 1974-01-24 Expired FR2216738B1 (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00329649A US3830967A (en) 1973-02-05 1973-02-05 Apparatus for half tone marking electrostatic paper

Publications (2)

Publication Number Publication Date
FR2216738A1 true FR2216738A1 (enExample) 1974-08-30
FR2216738B1 FR2216738B1 (enExample) 1977-06-10

Family

ID=23286389

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7402358A Expired FR2216738B1 (enExample) 1973-02-05 1974-01-24

Country Status (7)

Country Link
US (1) US3830967A (enExample)
CA (1) CA998164A (enExample)
DE (1) DE2401943A1 (enExample)
FR (1) FR2216738B1 (enExample)
GB (1) GB1447807A (enExample)
IT (1) IT1002481B (enExample)
SE (1) SE400008B (enExample)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4014030A (en) * 1976-02-23 1977-03-22 Xerox Corporation Half-tone imaging with flying spot scanner system
JPS5537092A (en) * 1978-09-05 1980-03-14 Ibm Mode switch for setting threshold value
US4276569A (en) * 1979-04-20 1981-06-30 Exxon Research & Engineering Co. Method and apparatus for producing a facsimile gray scale
JPS57160264A (en) * 1981-03-30 1982-10-02 Canon Inc Recorder of half tone picture
FR2596226B1 (fr) * 1986-03-19 1988-12-02 Vignon Bernard Procede de reproduction d'une image a partir de la numerisation de cette image
JPH02126771A (ja) * 1988-11-07 1990-05-15 Aisin Seiki Co Ltd 画像情報の２値化方法および装置
DE69030252T2 (de) * 1990-01-04 1997-09-04 Eastman Kodak Co Anschlagfreier drucker und grauwertaufzeichnungsverfahren
JPH05300346A (ja) * 1992-04-20 1993-11-12 Konica Corp 画像形成装置
US7553152B2 (en) * 2005-06-23 2009-06-30 Honeywell International Inc. Flame detector trapezoidal excitation generator output control circuit and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1457309A (fr) * 1965-05-13 1966-01-24 Colos Soc Procédé et dispositif électroniques de reproduction des demi-teintes sur électrostencil
CH438419A (de) * 1964-12-30 1967-06-30 Xerox Corp Diskriminatoranordnung zur Eliminierung von in einem Eingangssignal enthaltenen Störimpulsen
FR1587491A (enExample) * 1967-10-16 1970-03-20
FR2035640A5 (enExample) * 1969-02-20 1970-12-18 Ampex

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3469028A (en) * 1965-07-05 1969-09-23 Tokyo Shibaura Electric Co Electrode control systems of a multineedle electrode type electrostatic recording device
US3419676A (en) * 1965-07-20 1968-12-31 Stanford Research Inst Line scan printer
DE1487762A1 (de) * 1965-12-30 1969-01-30 Victor Company Of Japan Einrichtung zum magnetischen Aufzeichnen und Wiedergeben eines Bildsignals
US3631509A (en) * 1969-07-02 1971-12-28 Varian Associates High-speed coincident pulse electrographic printer with gray scale printing capability

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH438419A (de) * 1964-12-30 1967-06-30 Xerox Corp Diskriminatoranordnung zur Eliminierung von in einem Eingangssignal enthaltenen Störimpulsen
FR1457309A (fr) * 1965-05-13 1966-01-24 Colos Soc Procédé et dispositif électroniques de reproduction des demi-teintes sur électrostencil
FR1587491A (enExample) * 1967-10-16 1970-03-20
FR2035640A5 (enExample) * 1969-02-20 1970-12-18 Ampex

Also Published As

Publication number Publication date
SE400008B (sv) 1978-03-06
FR2216738B1 (enExample) 1977-06-10
US3830967A (en) 1974-08-20
GB1447807A (en) 1976-09-02
DE2401943A1 (de) 1974-08-08
CA998164A (en) 1976-10-05
IT1002481B (it) 1976-05-20

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Legal Events

Date Code Title Description
ST Notification of lapse