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
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 AG
Original Assignee
Siemens AG
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 AG filed Critical Siemens AG
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)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Facsimiles In General (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Studio Circuits (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
DE19752516332 DE2516332A1 (en) 1975-04-15 1975-04-15 METHOD OF ENCODING ELECTRICAL SIGNALS OBTAINED WHEN SCANNING A GRAPHIC PATTERN WITH CONTENT MIXED FROM TEXT AND IMAGE

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 (en)
DE (1) DE2516332A1 (en)
FR (1) FR2308262A1 (en)
GB (1) GB1549739A (en)
IT (1) IT1059715B (en)
NL (1) NL7603416A (en)
NO (1) NO148765C (en)

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
EP0369250A2 (en) * 1988-11-15 1990-05-23 Agfa-Gevaert AG Computer output microfilm printer and method for using it
US5018024A (en) * 1983-12-26 1991-05-21 Canon Kabushiki Kaisha Image processing apparatus using two-dimensional space frequency to discriminate image type
EP0748110A2 (en) * 1995-06-07 1996-12-11 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 (en) * 1977-09-17 1981-05-21 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Engraving device for the production of printing forms
DE2825912A1 (en) * 1978-06-13 1980-01-03 Siemens Ag METHOD FOR TRANSMITTING RECORDINGS WITH A MIXED DISPLAY CONTENT TO A VIEWING DISPLAY, ESPECIALLY IN TELEPHONE SYSTEMS
US4194221A (en) * 1978-12-26 1980-03-18 Xerox Corporation Automatic multimode continuous halftone line copy reproduction
DE3024322A1 (en) * 1980-06-27 1982-01-21 Siemens AG, 1000 Berlin und 8000 München METHOD FOR CODING ELECTRICAL SIGNALS WHICH ARE OBTAINED WHILE SCANNING A GRAPHIC PATTERN WITH CONTENT MIXED FROM TEXT AND IMAGES
JPS5725771A (en) * 1980-07-23 1982-02-10 Canon Inc Picture signal processor
DE3107655A1 (en) * 1981-02-27 1982-09-16 Siemens AG, 1000 Berlin und 8000 München METHOD FOR FINDING AND DEFINING TEXT AREAS ON A TEMPLATE THAT MAY CONTAIN TEXT, GRAPHICS AND / OR IMAGE AREAS
DE3113555A1 (en) * 1981-04-03 1982-10-21 Siemens AG, 1000 Berlin und 8000 München METHOD FOR AUTOMATICALLY RECOGNIZING WHITE BLOCKS AND TEXT, GRAPHIC AND / OR GRAY IMAGE AREAS ON PRINT ORIGINALS
DE3250064C2 (en) * 1981-04-27 1993-10-21 Canon Kk Ink jet recorder
US4495522A (en) * 1981-07-07 1985-01-22 Konishiroku Photo Industry Co., Ltd. Recording apparatus and method of picture image
BE889996A (en) * 1981-08-18 1981-12-16 Belge Lampes Mat Electr Mble FACSIMILE TRANSFER DEVICE
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 (en) * 1983-03-17 1994-10-19 キヤノン株式会社 Image processing method
US4694352A (en) * 1984-09-21 1987-09-15 Canon Kabushiki Kaisha Image information processing system
DE19706268A1 (en) * 1997-02-18 1998-08-20 Christian Wenz Data-format specific compression process for video and sound data
DE19754488A1 (en) * 1997-12-09 1999-06-10 Thomas Dr Wagner Optic or electronic document recognition device

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 (en) * 1971-06-03 1982-04-29 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Transmission system for original copies using run length coding - reduces redundancy with one bit length for word of black dot and other for white dot
DE2255887C3 (en) * 1972-11-15 1981-02-26 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Method for coding image signals, in particular facsimile signals

Cited By (7)

* 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
EP0369250A2 (en) * 1988-11-15 1990-05-23 Agfa-Gevaert AG Computer output microfilm printer and method for using it
EP0369250A3 (en) * 1988-11-15 1992-03-04 Agfa-Gevaert AG Computer output microfilm printer and method for using it
US5963342A (en) * 1994-10-19 1999-10-05 Canon Kabushiki Kaisha Image processing apparatus and method thereof
EP0748110A2 (en) * 1995-06-07 1996-12-11 Xerox Corporation Image segmentation system and method
EP0748110A3 (en) * 1995-06-07 1998-01-07 Xerox Corporation Image segmentation system and method

Also Published As

Publication number Publication date
FR2308262B1 (en) 1979-04-20
NO148765B (en) 1983-08-29
FR2308262A1 (en) 1976-11-12
IT1059715B (en) 1982-06-21
DE2516332C2 (en) 1987-01-22
BE840787A (en) 1976-08-02
NO761147L (en) 1976-10-18
NL7603416A (en) 1976-10-19
DE2516332A1 (en) 1976-10-28
NO148765C (en) 1983-12-07

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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