BE866727A - PROCESS FOR IMPROVING IMAGE QUALITY DURING FACSIMILE TRANSMISSION - Google Patents

PROCESS FOR IMPROVING IMAGE QUALITY DURING FACSIMILE TRANSMISSION

Info

Publication number
BE866727A
BE866727A BE187411A BE187411A BE866727A BE 866727 A BE866727 A BE 866727A BE 187411 A BE187411 A BE 187411A BE 187411 A BE187411 A BE 187411A BE 866727 A BE866727 A BE 866727A
Authority
BE
Belgium
Prior art keywords
image quality
facsimile transmission
improving image
quality during
during facsimile
Prior art date
Application number
BE187411A
Other languages
French (fr)
Original Assignee
Rudolf Hell G M B H
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 Rudolf Hell G M B H filed Critical Rudolf Hell G M B H
Publication of BE866727A publication Critical patent/BE866727A/en

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)
  • Facsimile Scanning Arrangements (AREA)
  • Solid State Image Pick-Up Elements (AREA)
BE187411A 1977-05-05 1978-05-05 PROCESS FOR IMPROVING IMAGE QUALITY DURING FACSIMILE TRANSMISSION BE866727A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2720079A DE2720079C3 (en) 1977-05-05 1977-05-05 Method for improving the image quality in facsimile transmission

Publications (1)

Publication Number Publication Date
BE866727A true BE866727A (en) 1978-09-01

Family

ID=6008068

Family Applications (1)

Application Number Title Priority Date Filing Date
BE187411A BE866727A (en) 1977-05-05 1978-05-05 PROCESS FOR IMPROVING IMAGE QUALITY DURING FACSIMILE TRANSMISSION

Country Status (14)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2826755A1 (en) * 1978-06-19 1979-12-20 Hell Rudolf Dr Ing Gmbh SAMPLE DEVICE
US4589034A (en) * 1980-12-05 1986-05-13 Canon Kabushiki Kaisha Image processing apparatus
DE3441152A1 (en) * 1984-11-10 1986-05-28 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co KG, 8510 Fürth METHOD FOR MAGNETICALLY RECORDING AND PLAYING BACK TELECOMMUNICATION SIGNALS, IN PARTICULAR VIDEO TEXT AND / OR CABLE TEXT SIGNALS

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 (en) * 1965-07-14 1968-05-22 Hell Rudolf Dr Ing Fa Process for increasing the sharpness in the recording of reproductions of photoelectrically scanned original images
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 (en) * 1971-03-24 1973-09-20 Robert Bosch Fernsehanlagen Gmbh, 6100 Darmstadt Amphtude discriminator for a circuit arrangement for generating a correction signal for flank adjustment of pulses
US3795765A (en) * 1971-12-29 1974-03-05 Xerox Corp Alternate analog encoding method and apparatus

Also Published As

Publication number Publication date
AU518941B2 (en) 1981-10-29
FI781369A (en) 1978-11-06
YU101778A (en) 1982-08-31
IT7822932A0 (en) 1978-05-03
AT372561B (en) 1983-10-25
NL7804772A (en) 1978-11-07
DK191378A (en) 1978-11-06
IT1095722B (en) 1985-08-17
DE2720079B2 (en) 1981-01-22
ATA303978A (en) 1983-02-15
CH627317A5 (en) 1981-12-31
SE7804769L (en) 1978-11-06
DE2720079C3 (en) 1981-11-05
FR2390056A1 (en) 1978-12-01
NO781338L (en) 1978-11-07
DE2720079A1 (en) 1978-11-09
AU3577078A (en) 1979-11-08
GB1604106A (en) 1981-12-02

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: RUDOLF HELL G.M.B.H.

Effective date: 19840505