FI781369A - Foerfarande foer foerbaettrande av bildkvaliteten vid faksimile-oeverfoering - Google Patents

Foerfarande foer foerbaettrande av bildkvaliteten vid faksimile-oeverfoering

Info

Publication number
FI781369A
FI781369A FI781369A FI781369A FI781369A FI 781369 A FI781369 A FI 781369A FI 781369 A FI781369 A FI 781369A FI 781369 A FI781369 A FI 781369A FI 781369 A FI781369 A FI 781369A
Authority
FI
Finland
Prior art keywords
foerfoerbaettrande
faksimile
bildkvaliteten
oeverfoering
foerfarande
Prior art date
Application number
FI781369A
Other languages
English (en)
Inventor
Juergen Muenchow
Ruediger Sommer
Original Assignee
Hell Rudolf Gmbh
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 Hell Rudolf Gmbh filed Critical Hell Rudolf Gmbh
Publication of FI781369A publication Critical patent/FI781369A/fi

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
    • H04N1/409—Edge or detail enhancement; Noise or error suppression
    • H04N1/4092—Edge or detail enhancement
    • 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)
  • Facsimile Image Signal Circuits (AREA)
  • Solid State Image Pick-Up Elements (AREA)
  • Facsimile Scanning Arrangements (AREA)
FI781369A 1977-05-05 1978-05-03 Foerfarande foer foerbaettrande av bildkvaliteten vid faksimile-oeverfoering FI781369A (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2720079A DE2720079C3 (de) 1977-05-05 1977-05-05 Verfahren zur Verbesserung der Bildqualität bei der Faksimile-Übertragung

Publications (1)

Publication Number Publication Date
FI781369A true FI781369A (fi) 1978-11-06

Family

ID=6008068

Family Applications (1)

Application Number Title Priority Date Filing Date
FI781369A FI781369A (fi) 1977-05-05 1978-05-03 Foerfarande foer foerbaettrande av bildkvaliteten vid faksimile-oeverfoering

Country Status (14)

Country Link
AT (1) AT372561B (fi)
AU (1) AU518941B2 (fi)
BE (1) BE866727A (fi)
CH (1) CH627317A5 (fi)
DE (1) DE2720079C3 (fi)
DK (1) DK191378A (fi)
FI (1) FI781369A (fi)
FR (1) FR2390056A1 (fi)
GB (1) GB1604106A (fi)
IT (1) IT1095722B (fi)
NL (1) NL7804772A (fi)
NO (1) NO781338L (fi)
SE (1) SE7804769L (fi)
YU (1) YU101778A (fi)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2826755A1 (de) * 1978-06-19 1979-12-20 Hell Rudolf Dr Ing Gmbh Abtasteinrichtung
US4589034A (en) * 1980-12-05 1986-05-13 Canon Kabushiki Kaisha Image processing apparatus
DE3441152A1 (de) * 1984-11-10 1986-05-28 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co KG, 8510 Fürth Verfahren zur magnetischen aufzeichnung und wiedergabe von telekommunikations-signalen, insbesondere von videotext- und/oder kabeltext-signalen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189685A (en) * 1961-04-21 1965-06-15 Philco Corp Two-level quantization system
DE1268657B (de) * 1965-07-14 1968-05-22 Hell Rudolf Dr Ing Fa Verfahren zur Steigerung der Schaerfe bei der Aufzeichnung der Reproduktionen lichtelektrisch abgetasteter Bildvorlagen
US3538246A (en) * 1968-05-22 1970-11-03 Southern Pacific Transport Co Bandwidth reduction technique for analog signals
US3495032A (en) * 1968-10-07 1970-02-10 Graphic Transmission Systems I Bandwidth reduction system
US3761610A (en) * 1971-02-16 1973-09-25 Graphics Sciences Inc High speed fascimile systems
DE2114149C3 (de) * 1971-03-24 1973-09-20 Robert Bosch Fernsehanlagen Gmbh, 6100 Darmstadt Amphtudendiskriminator fur eine Schaltungsanordnung zur Erzeugung eines Korrektursignals zur Flankenverstelle rung von Impulsen
US3795765A (en) * 1971-12-29 1974-03-05 Xerox Corp Alternate analog encoding method and apparatus

Also Published As

Publication number Publication date
IT7822932A0 (it) 1978-05-03
DE2720079C3 (de) 1981-11-05
FR2390056A1 (fi) 1978-12-01
AU3577078A (en) 1979-11-08
NO781338L (no) 1978-11-07
ATA303978A (de) 1983-02-15
AT372561B (de) 1983-10-25
IT1095722B (it) 1985-08-17
BE866727A (fr) 1978-09-01
SE7804769L (sv) 1978-11-06
YU101778A (en) 1982-08-31
AU518941B2 (en) 1981-10-29
DK191378A (da) 1978-11-06
GB1604106A (en) 1981-12-02
NL7804772A (nl) 1978-11-07
CH627317A5 (en) 1981-12-31
DE2720079B2 (de) 1981-01-22
DE2720079A1 (de) 1978-11-09

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Legal Events

Date Code Title Description
FD Application lapsed

Owner name: RUDOLF HELL GMBH