DE69027870D1 - Bildverarbeitungsgerät - Google Patents

Bildverarbeitungsgerät

Info

Publication number: DE69027870D1
Authority: DE; Germany
Prior art keywords: image processing; processing device; image; processing
Prior art date: 1989-02-10
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 - Fee Related

Application number

DE69027870T

Other languages

English (en)

Other versions

DE69027870T2 (de

Inventor

Yasuhiro Yamada

Hiroshi Tanioka

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.)

Canon Inc

Original Assignee

Canon 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.)

1989-02-10

Filing date

1990-02-12

Publication date

1996-08-29

1989-02-10 Priority claimed from JP1031408A external-priority patent/JP2810395B2/ja

1989-02-10 Priority claimed from JP1031404A external-priority patent/JPH02210959A/ja

1989-02-10 Priority claimed from JP1031411A external-priority patent/JP2810396B2/ja

1989-02-10 Priority claimed from JP1031409A external-priority patent/JP2683085B2/ja

1989-02-10 Priority claimed from JP1031405A external-priority patent/JP2683084B2/ja

1989-11-02 Priority claimed from JP1284879A external-priority patent/JPH03147480A/ja

1990-02-12 Application filed by Canon Inc filed Critical Canon Inc

1996-08-29 Publication of DE69027870D1 publication Critical patent/DE69027870D1/de

1997-01-09 Application granted granted Critical

1997-01-09 Publication of DE69027870T2 publication Critical patent/DE69027870T2/de

2010-02-13 Anticipated expiration legal-status Critical

Status Expired - Fee Related 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
- H04N1/40—Picture signal circuits
- H04N1/40087—Multi-toning, i.e. converting a continuous-tone signal for reproduction with more than two discrete brightnesses or optical densities, e.g. dots of grey and black inks on white paper
- 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
- H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
- H04N1/4051—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size
- H04N1/4052—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size by error diffusion, i.e. transferring the binarising error to neighbouring dot decisions

Landscapes

Engineering & Computer Science (AREA)
Multimedia (AREA)
Signal Processing (AREA)
Physics & Mathematics (AREA)
Discrete Mathematics (AREA)
General Physics & Mathematics (AREA)
Facsimile Image Signal Circuits (AREA)
Image Processing (AREA)
Image Analysis (AREA)

DE1990627870 1989-02-10 1990-02-12 Bildverarbeitungsgerät Expired - Fee Related DE69027870T2 (de)

Applications Claiming Priority (6)

Application Number	Priority Date	Filing Date	Title
JP1031408A JP2810395B2 (ja)	1989-02-10	1989-02-10	画像処理装置
JP1031404A JPH02210959A (ja)	1989-02-10	1989-02-10	画像処理装置
JP1031411A JP2810396B2 (ja)	1989-02-10	1989-02-10	画像処理装置
JP1031409A JP2683085B2 (ja)	1989-02-10	1989-02-10	画像処理装置
JP1031405A JP2683084B2 (ja)	1989-02-10	1989-02-10	画像処理装置
JP1284879A JPH03147480A (ja)	1989-11-02	1989-11-02	画像処理装置

Publications (2)

Publication Number	Publication Date
DE69027870D1 true DE69027870D1 (de)	1996-08-29
DE69027870T2 DE69027870T2 (de)	1997-01-09

Family

ID=27549596

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
DE1990627870 Expired - Fee Related DE69027870T2 (de)	1989-02-10	1990-02-12	Bildverarbeitungsgerät
DE1990626846 Expired - Fee Related DE69026846T2 (de)	1989-02-10	1990-02-12	Bildverarbeitungsvorrichtung

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
DE1990626846 Expired - Fee Related DE69026846T2 (de)	1989-02-10	1990-02-12	Bildverarbeitungsvorrichtung

Country Status (2)

Country	Link
EP (2)	EP0382581B1 (de)
DE (2)	DE69027870T2 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE69033372T2 (de) *	1989-04-27	2000-05-11	Canon K.K., Tokio/Tokyo	Bildverarbeitungsvorrichtung
US5515180A (en) *	1992-11-24	1996-05-07	Sharp Kabushiki Kaisha	Image processing device
DE69520703T2 (de) *	1994-03-02	2001-08-02	Hewlett-Packard Co. (N.D.Ges.D.Staates Delaware), Palo Alto	Erzeugung von Mehrfachtonbildern
DE69521638T2 (de) *	1994-03-02	2001-10-25	Hewlett-Packard Co. (N.D.Ges.D.Staates Delaware), Palo Alto	Erzeugung von Mehrfachtonbildern
EP0683596B1 (de) *	1994-05-18	2000-08-30	Sharp Kabushiki Kaisha	Kartenartige Kamera mit Bildverarbeitungsfunktion
DE69526559T2 (de) *	1994-11-08	2002-08-22	Xerox Corp., Rochester	Halbtonrasterung von Bildelementpaaren für einen Drucker mit hoher Schärfe
EP0893910A1 (de) *	1997-07-21	1999-01-27	SYFAL S.p.A.	Verfahren zur Reproduktion von hochauflösenden Bildern
US7268919B2 (en)	2002-01-17	2007-09-11	Seiko Epson Corporation	Image data processing apparatus, method, and program that diffuses gradiation error for each pixel in target block

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS57104369A (en) *	1980-12-22	1982-06-29	Toshiba Corp	Binary device for picture with contrast
JPS60157375A (ja) *	1983-12-21	1985-08-17	Fuji Xerox Co Ltd	中間調表現方式
JPS60214160A (ja) *	1984-04-09	1985-10-26	Ricoh Co Ltd	画信号２値化方式
EP0174721B1 (de) *	1984-07-25	1991-07-17	Matsushita Electric Industrial Co., Ltd.	Bildsignalverarbeitungsgerät
EP0248616A3 (de) *	1986-06-02	1990-03-07	Kabushiki Kaisha Toshiba	Bilddruckgerät
US4972502A (en) *	1987-02-17	1990-11-20	Sharp Kabushiki Kaisha	Image signal binary encoder

1990
- 1990-02-12 EP EP19900301476 patent/EP0382581B1/de not_active Expired - Lifetime
- 1990-02-12 DE DE1990627870 patent/DE69027870T2/de not_active Expired - Fee Related
- 1990-02-12 EP EP19900301475 patent/EP0382580B1/de not_active Expired - Lifetime
- 1990-02-12 DE DE1990626846 patent/DE69026846T2/de not_active Expired - Fee Related

Also Published As

Publication number	Publication date
EP0382580A2 (de)	1990-08-16
EP0382581A3 (de)	1991-10-16
DE69026846T2 (de)	1997-01-09
EP0382581A2 (de)	1990-08-16
EP0382581B1 (de)	1996-05-08
DE69027870T2 (de)	1997-01-09
EP0382580B1 (de)	1996-07-24
DE69026846D1 (de)	1996-06-13
EP0382580A3 (de)	1991-10-02

Legal Events

Date	Code	Title	Description
1997-08-21	8364	No opposition during term of opposition
2009-12-17	8339	Ceased/non-payment of the annual fee

Publication	Publication Date	Title
DE69033372D1 (de)	2000-01-05	Bildverarbeitungsvorrichtung
DE68926785D1 (de)	1996-08-08	Bildverarbeitungsgerät
DE68927696D1 (de)	1997-03-06	Bildverarbeitungsgerät
DE68927080D1 (de)	1996-10-10	Bildverarbeitungsvorrichtung
DE69026159D1 (de)	1996-05-02	Bildverarbeitungsgerät
DE69023618D1 (de)	1995-12-21	Bildverarbeitungsvorrichtung.
DE69133366D1 (de)	2004-03-25	Bildverarbeitungsvorrichtung
DE69133323D1 (de)	2003-11-06	Bildverarbeitungsgerät
DE69032908D1 (de)	1999-03-04	Bildverarbeitungsgerät
DE69129244D1 (de)	1998-05-20	Bildverarbeitungsgerät
DE69031769D1 (de)	1998-01-15	Bildverarbeitungsgerät
DE68926702D1 (de)	1996-07-25	Bildverarbeitungsgerät
DE68926354D1 (de)	1996-05-30	Bildverarbeitungsgerät
DE69125414D1 (de)	1997-05-07	Bildverarbeitungsgerät
DE69023457D1 (de)	1995-12-14	Bildverarbeitungsgerät.
DE69126457D1 (de)	1997-07-17	Bildverarbeitungsvorrichtung
DE69033844D1 (de)	2001-12-06	Bildverarbeitungseinrichtung
DE69027636D1 (de)	1996-08-08	Bildverarbeitungsvorrichtung
DE69020622D1 (de)	1995-08-10	Bildverarbeitungsgerät.
DE69028668D1 (de)	1996-10-31	Bildverarbeitungsgerät
DE69030984D1 (de)	1997-08-07	Bildverarbeitungsgerät
DE69030714D1 (de)	1997-06-19	Bildverarbeitungsgerät
DE68928122D1 (de)	1997-07-17	Bildaufbereitungsgerät
DE69033539D1 (de)	2000-06-08	Bildverarbeitungsgerät
DE69132933D1 (de)	2002-03-21	Bildverarbeitungsgerät