FR2171316A1 - - Google Patents

Info

Publication number
FR2171316A1
FR2171316A1 FR7304514A FR7304514A FR2171316A1 FR 2171316 A1 FR2171316 A1 FR 2171316A1 FR 7304514 A FR7304514 A FR 7304514A FR 7304514 A FR7304514 A FR 7304514A FR 2171316 A1 FR2171316 A1 FR 2171316A1
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
FR7304514A
Other versions
FR2171316B1 (fr
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
Publication of FR2171316A1 publication Critical patent/FR2171316A1/fr
Application granted granted Critical
Publication of FR2171316B1 publication Critical patent/FR2171316B1/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)
  • Facsimile Image Signal Circuits (AREA)
FR7304514A 1972-02-08 1973-02-08 Expired FR2171316B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47013318A JPS4883724A (fr) 1972-02-08 1972-02-08

Publications (2)

Publication Number Publication Date
FR2171316A1 true FR2171316A1 (fr) 1973-09-21
FR2171316B1 FR2171316B1 (fr) 1977-08-19

Family

ID=11829808

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7304514A Expired FR2171316B1 (fr) 1972-02-08 1973-02-08

Country Status (3)

Country Link
JP (1) JPS4883724A (fr)
DE (1) DE2305513A1 (fr)
FR (1) FR2171316B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475333A1 (fr) * 1980-02-04 1981-08-07 Nippon Telegraph & Telephone Systeme de commande pour une reproduction a niveaux multiples de gradation, notamment pour un recepteur de fac-similes
FR2605771A1 (fr) * 1985-12-06 1988-04-29 Canon Kk Appareil de traitement de donnees d'images
EP0272147A2 (fr) * 1986-12-19 1988-06-22 Matsushita Electric Industrial Co., Ltd. Appareil de traitement de signaux pour la visualisation d'images à deux niveaux

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50116215A (fr) * 1974-02-26 1975-09-11
JPS51132726A (en) * 1975-05-14 1976-11-18 Kokusai Electric Co Ltd Image-display unit
US4087792A (en) * 1977-03-03 1978-05-02 Westinghouse Electric Corp. Electro-optic display system
JPS5694876A (en) * 1979-12-27 1981-07-31 Fujitsu Ltd Video signal processing method
JPS5694875A (en) * 1979-12-28 1981-07-31 Fujitsu Ltd Binary signal processor
JPS5694874A (en) * 1979-12-28 1981-07-31 Fujitsu Ltd Video signal processor
US4394662A (en) * 1980-07-31 1983-07-19 Matsushita Research Institute Tokyo, Inc. Dot printer for reproduction of halftone images
JPS57205787A (en) * 1981-06-15 1982-12-16 Tokyo Shibaura Electric Co Half tone display system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475333A1 (fr) * 1980-02-04 1981-08-07 Nippon Telegraph & Telephone Systeme de commande pour une reproduction a niveaux multiples de gradation, notamment pour un recepteur de fac-similes
FR2605771A1 (fr) * 1985-12-06 1988-04-29 Canon Kk Appareil de traitement de donnees d'images
EP0272147A2 (fr) * 1986-12-19 1988-06-22 Matsushita Electric Industrial Co., Ltd. Appareil de traitement de signaux pour la visualisation d'images à deux niveaux
EP0272147A3 (en) * 1986-12-19 1989-10-25 Matsushita Electric Industrial Co., Ltd. Bi-level image display signal processing apparatus
US4891710A (en) * 1986-12-19 1990-01-02 Matsushita Electric Industrial Co., Ltd. Bi-level image display signal processing apparatus
EP0507356A2 (fr) * 1986-12-19 1992-10-07 Matsushita Electric Industrial Co., Ltd. Appareil de traitement de signaux pour la visualisation d'images à deux niveaux
EP0507356A3 (en) * 1986-12-19 1993-07-14 Matsushita Electric Industrial Co., Ltd Bi-level image display signal processing apparatus

Also Published As

Publication number Publication date
DE2305513A1 (de) 1973-08-16
JPS4883724A (fr) 1973-11-08
FR2171316B1 (fr) 1977-08-19

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Legal Events

Date Code Title Description
ST Notification of lapse