IT979204B - Procedimento e sistema di com pressione di dati a linea dop pia per comprimere trasmettere e riprodurre dati di facsimile - Google Patents

Procedimento e sistema di com pressione di dati a linea dop pia per comprimere trasmettere e riprodurre dati di facsimile

Info

Publication number
IT979204B
IT979204B IT2050673A IT2050673A IT979204B IT 979204 B IT979204 B IT 979204B IT 2050673 A IT2050673 A IT 2050673A IT 2050673 A IT2050673 A IT 2050673A IT 979204 B IT979204 B IT 979204B
Authority
IT
Italy
Prior art keywords
reproduce
compress
transmit
procedure
data
Prior art date
Application number
IT2050673A
Other languages
English (en)
Original Assignee
Daoom 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 Daoom Inc filed Critical Daoom Inc
Application granted granted Critical
Publication of IT979204B publication Critical patent/IT979204B/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
    • H04N1/41—Bandwidth or redundancy reduction
    • H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
    • H04N1/413—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information
    • H04N1/415—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information in which the picture-elements are subdivided or grouped into fixed one-dimensional or two-dimensional blocks

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
IT2050673A 1972-02-17 1973-02-16 Procedimento e sistema di com pressione di dati a linea dop pia per comprimere trasmettere e riprodurre dati di facsimile IT979204B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22714972A 1972-02-17 1972-02-17

Publications (1)

Publication Number Publication Date
IT979204B true IT979204B (it) 1974-09-30

Family

ID=22851959

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2050673A IT979204B (it) 1972-02-17 1973-02-16 Procedimento e sistema di com pressione di dati a linea dop pia per comprimere trasmettere e riprodurre dati di facsimile

Country Status (6)

Country Link
JP (1) JPS5424604B2 (it)
CA (1) CA1002175A (it)
DE (1) DE2307511C2 (it)
FR (1) FR2172400B1 (it)
GB (2) GB1409364A (it)
IT (1) IT979204B (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2257183B1 (fr) * 1974-01-04 1976-11-26 Cit Alcatel Systeme de transmission fac-simile d'une image
JPS51132015A (en) * 1974-12-23 1976-11-16 Fujitsu Ltd Picture signal encoding transmission system
JPS5290216A (en) * 1976-01-24 1977-07-29 Mita Industrial Co Ltd Picture signal band compressing method
JPS5295113A (en) * 1976-02-05 1977-08-10 Fujitsu Ltd Band compression transmission system
JPS5826713B2 (ja) * 1976-06-28 1983-06-04 日本電信電話株式会社 ２値信号の逐次境界差分符号化伝送方式
JPS5666971A (en) * 1979-11-05 1981-06-05 Dainippon Screen Mfg Co Ltd Picture data compressing method
DE3326224A1 (de) * 1983-07-21 1985-02-07 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Schaltungsanordnung zum ansteuern einer anzeigeeinrichtung
JPS60251775A (ja) * 1984-05-28 1985-12-12 Ricoh Co Ltd デ−タ転送方式
JPH0671312B2 (ja) * 1989-05-29 1994-09-07 キヤノン株式会社 ファクシミリ装置
DE4028927A1 (de) * 1990-08-07 1992-02-13 Dirr Josef Verfahren fuer die codierung und uebertragung von information, insbesondere von vorlagen und bildern und fuer das fernsehen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3502806A (en) * 1966-08-01 1970-03-24 Xerox Corp Modified run length data reduction system
FR1546604A (fr) * 1966-08-15 1968-11-22 Xeros Corp Installation de communication phototélégraphique
US4135214A (en) * 1969-07-02 1979-01-16 Dacom, Inc. Method and apparatus for compressing facsimile transmission data
JPS5123408B1 (it) * 1971-07-10 1976-07-16

Also Published As

Publication number Publication date
DE2307511A1 (de) 1973-09-06
GB1409364A (en) 1975-10-08
GB1409365A (en) 1975-10-08
DE2307511C2 (de) 1983-05-11
AU5227973A (en) 1974-08-22
JPS5424604B2 (it) 1979-08-22
FR2172400B1 (it) 1978-06-23
JPS4985913A (it) 1974-08-17
FR2172400A1 (it) 1973-09-28
CA1002175A (en) 1976-12-21

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