GB1549739A - Coding of electrical signals obtained from pictorial representation - Google Patents

Coding of electrical signals obtained from pictorial representation

Info

Publication number
GB1549739A
GB1549739A GB15259/76A GB1525976A GB1549739A GB 1549739 A GB1549739 A GB 1549739A GB 15259/76 A GB15259/76 A GB 15259/76A GB 1525976 A GB1525976 A GB 1525976A GB 1549739 A GB1549739 A GB 1549739A
Authority
GB
United Kingdom
Prior art keywords
coding
electrical signals
signals obtained
pictorial representation
pictorial
Prior art date
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
GB15259/76A
Other languages
English (en)
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.)
Siemens Corp
Original Assignee
Siemens Corp
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 Siemens Corp filed Critical Siemens Corp
Publication of GB1549739A publication Critical patent/GB1549739A/en
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
    • H04N1/23—Reproducing arrangements
    • 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
    • H04N1/41—Bandwidth or redundancy reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Studio Circuits (AREA)
  • Facsimiles In General (AREA)
  • Image Processing (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
GB15259/76A 1975-04-15 1976-04-14 Coding of electrical signals obtained from pictorial representation Expired GB1549739A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2516332A DE2516332C2 (de) 1975-04-15 1975-04-15 Verfahren zur Codierung von elektrischen Signalen, die bei der Abtastung eines graphischen Musters mit aus Text und Bild gemischtem Inhalt gewonnen werden

Publications (1)

Publication Number Publication Date
GB1549739A true GB1549739A (en) 1979-08-08

Family

ID=5943883

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15259/76A Expired GB1549739A (en) 1975-04-15 1976-04-14 Coding of electrical signals obtained from pictorial representation

Country Status (7)

Country Link
BE (1) BE840787A (enExample)
DE (1) DE2516332C2 (enExample)
FR (1) FR2308262A1 (enExample)
GB (1) GB1549739A (enExample)
IT (1) IT1059715B (enExample)
NL (1) NL7603416A (enExample)
NO (1) NO148765C (enExample)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4924509A (en) * 1983-05-25 1990-05-08 Canon Kabushiki Kaisha Image processing apparatus
US5018024A (en) * 1983-12-26 1991-05-21 Canon Kabushiki Kaisha Image processing apparatus using two-dimensional space frequency to discriminate image type
EP0369250A3 (de) * 1988-11-15 1992-03-04 Agfa-Gevaert AG Computer-Output-Mikrofilm-Drucker und Verfahren zu dessen Verwendung
EP0748110A3 (en) * 1995-06-07 1998-01-07 Xerox Corporation Image segmentation system and method
US5963342A (en) * 1994-10-19 1999-10-05 Canon Kabushiki Kaisha Image processing apparatus and method thereof

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087788A (en) * 1977-01-14 1978-05-02 Ncr Canada Ltd - Ncr Canada Ltee Data compression system
DE2741953C3 (de) 1977-09-17 1981-05-21 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Graviervorrichtung zum Herstellen von Druckformen
DE2825912A1 (de) * 1978-06-13 1980-01-03 Siemens Ag Verfahren zur uebertragung von aufzeichnungen mit gemischtem darstellungsinhalt auf einen sichtanzeigeschirm, insbesondere in fernsprechanlagen
US4194221A (en) * 1978-12-26 1980-03-18 Xerox Corporation Automatic multimode continuous halftone line copy reproduction
DE3024322A1 (de) * 1980-06-27 1982-01-21 Siemens AG, 1000 Berlin und 8000 München Verfahren zur codierung von elektrischen signalen, die bei der abtastung eines grafischen musters mit aus text und bildern gemischtem inhalt gewonnen werden
JPS5725771A (en) * 1980-07-23 1982-02-10 Canon Inc Picture signal processor
DE3107655A1 (de) * 1981-02-27 1982-09-16 Siemens AG, 1000 Berlin und 8000 München Verfahren zum auffinden und abgrenzen von textbereichen auf einer vorlage, die text-, graphik- und/oder bildbereiche enthalten kann
DE3113555A1 (de) * 1981-04-03 1982-10-21 Siemens AG, 1000 Berlin und 8000 München Verfahren zum automatischen erkennen von weissbloecken sowie text-, graphik- und/oder graubildbereichen auf druckvorlagen
FR2504456B1 (fr) * 1981-04-27 1991-07-19 Canon Kk Appareil d'impression pour la copie d'originaux
US4495522A (en) * 1981-07-07 1985-01-22 Konishiroku Photo Industry Co., Ltd. Recording apparatus and method of picture image
BE889996A (nl) * 1981-08-18 1981-12-16 Belge Lampes Mat Electr Mble Facsimile overdrachtsinrichting
GB2115256B (en) * 1981-12-19 1986-01-29 Konishiroku Photo Ind Picture image discriminating apparatus
GB2114847B (en) * 1981-12-26 1986-02-12 Konishiroku Photo Ind Apparatus for discriminating between linear and tonal picture video signals
JPH0683357B2 (ja) * 1983-03-17 1994-10-19 キヤノン株式会社 画像処理方法
US4694352A (en) * 1984-09-21 1987-09-15 Canon Kabushiki Kaisha Image information processing system
DE19706268A1 (de) * 1997-02-18 1998-08-20 Christian Wenz Dateiformatspezifisches Packverfahren
DE19754488A1 (de) * 1997-12-09 1999-06-10 Thomas Dr Wagner Vorrichtung und Verfahren zum inhaltsabhängigen Scannen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3394352A (en) * 1965-07-22 1968-07-23 Electronic Image Systems Corp Method of and apparatus for code communication
US3646257A (en) * 1969-03-13 1972-02-29 Electronic Image Systems Corp Communication system having plural coding vocabularies
DE2127516C2 (de) * 1971-06-03 1982-04-29 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zur Übertragung binärcodierter Signale von Bildvorlagen oder Schriftvorlagen
DE2255887C3 (de) * 1972-11-15 1981-02-26 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zur Codierung von Bild-, insbesondere Faksimilesignalen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4924509A (en) * 1983-05-25 1990-05-08 Canon Kabushiki Kaisha Image processing apparatus
US5018024A (en) * 1983-12-26 1991-05-21 Canon Kabushiki Kaisha Image processing apparatus using two-dimensional space frequency to discriminate image type
EP0369250A3 (de) * 1988-11-15 1992-03-04 Agfa-Gevaert AG Computer-Output-Mikrofilm-Drucker und Verfahren zu dessen Verwendung
US5963342A (en) * 1994-10-19 1999-10-05 Canon Kabushiki Kaisha Image processing apparatus and method thereof
EP0748110A3 (en) * 1995-06-07 1998-01-07 Xerox Corporation Image segmentation system and method

Also Published As

Publication number Publication date
FR2308262A1 (fr) 1976-11-12
DE2516332A1 (de) 1976-10-28
NL7603416A (nl) 1976-10-19
NO761147L (enExample) 1976-10-18
IT1059715B (it) 1982-06-21
FR2308262B1 (enExample) 1979-04-20
NO148765B (no) 1983-08-29
NO148765C (no) 1983-12-07
BE840787A (fr) 1976-08-02
DE2516332C2 (de) 1987-01-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee