IT1095722B - PROCEDURE TO IMPROVE THE IMAGE QUALITY IN THE FACSIMILE TRANSMISSION - Google Patents

PROCEDURE TO IMPROVE THE IMAGE QUALITY IN THE FACSIMILE TRANSMISSION

Info

Publication number: IT1095722B
Authority: IT; Italy
Prior art keywords: procedure; improve; image quality; facsimile transmission; facsimile
Prior art date: 1977-05-05

Application number

IT22932/78A

Other languages

Italian (it)

Other versions

IT7822932A0 (en

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.)

1977-05-05

Filing date

1978-05-03

Publication date

1985-08-17

1978-05-03 Application filed by Hell Rudolf Gmbh filed Critical Hell Rudolf Gmbh

1978-05-03 Publication of IT7822932A0 publication Critical patent/IT7822932A0/en

1985-08-17 Application granted granted Critical

1985-08-17 Publication of IT1095722B publication Critical patent/IT1095722B/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)

IT22932/78A 1977-05-05 1978-05-03 PROCEDURE TO IMPROVE THE IMAGE QUALITY IN THE FACSIMILE TRANSMISSION IT1095722B (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 (2)

Publication Number	Publication Date
IT7822932A0 IT7822932A0 (en)	1978-05-03
IT1095722B true IT1095722B (en)	1985-08-17

Family

ID=6008068

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT22932/78A IT1095722B (en)	1977-05-05	1978-05-03	PROCEDURE TO IMPROVE THE IMAGE QUALITY IN THE 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

1977
- 1977-05-05 DE DE2720079A patent/DE2720079C3/en not_active Expired
1978
- 1978-04-07 CH CH375478A patent/CH627317A5/en not_active IP Right Cessation
- 1978-04-17 NO NO781338A patent/NO781338L/en unknown
- 1978-04-26 SE SE7804769A patent/SE7804769L/en unknown
- 1978-04-27 AT AT0303978A patent/AT372561B/en not_active IP Right Cessation
- 1978-04-27 YU YU01017/78A patent/YU101778A/en unknown
- 1978-05-03 DK DK191378A patent/DK191378A/en not_active Application Discontinuation
- 1978-05-03 FR FR7813231A patent/FR2390056A1/fr not_active Withdrawn
- 1978-05-03 IT IT22932/78A patent/IT1095722B/en active
- 1978-05-03 NL NL7804772A patent/NL7804772A/en not_active Application Discontinuation
- 1978-05-03 FI FI781369A patent/FI781369A/en not_active Application Discontinuation
- 1978-05-04 AU AU35770/78A patent/AU518941B2/en not_active Expired
- 1978-05-05 BE BE187411A patent/BE866727A/en not_active IP Right Cessation
- 1978-05-05 GB GB18069/78A patent/GB1604106A/en not_active Expired

Also Published As

Publication number	Publication date
DE2720079B2 (en)	1981-01-22
IT7822932A0 (en)	1978-05-03
SE7804769L (en)	1978-11-06
NL7804772A (en)	1978-11-07
DK191378A (en)	1978-11-06
FI781369A (en)	1978-11-06
AU518941B2 (en)	1981-10-29
AT372561B (en)	1983-10-25
CH627317A5 (en)	1981-12-31
AU3577078A (en)	1979-11-08
YU101778A (en)	1982-08-31
GB1604106A (en)	1981-12-02
BE866727A (en)	1978-09-01
DE2720079C3 (en)	1981-11-05
DE2720079A1 (en)	1978-11-09
FR2390056A1 (en)	1978-12-01
NO781338L (en)	1978-11-07
ATA303978A (en)	1983-02-15

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