BR9705899A - Sistema de meios-tons por grupamento de pontos - Google Patents

Sistema de meios-tons por grupamento de pontos

Info

Publication number: BR9705899A
Authority: BR; Brazil
Prior art keywords: grouping points; halftone system; halftone; grouping; points
Prior art date: 1996-11-26

Application number

BR9705899A

Other languages

English (en)

Inventor

Fritz E Ebner

Tse Kee Chan

Shen-Ge Wang

Original Assignee

Xerox Corp

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.)

1996-11-26

Filing date

1997-11-26

Publication date

1999-03-16

1997-11-26 Application filed by Xerox Corp filed Critical Xerox Corp

1999-03-16 Publication of BR9705899A publication Critical patent/BR9705899A/pt

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
- H04N1/405—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
- 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
- H04N1/46—Colour picture communication systems
- H04N1/52—Circuits or arrangements for halftone screening

Landscapes

Engineering & Computer Science (AREA)
Multimedia (AREA)
Signal Processing (AREA)
Image Processing (AREA)
Image Generation (AREA)
Facsimile Image Signal Circuits (AREA)

BR9705899A 1996-11-26 1997-11-26 Sistema de meios-tons por grupamento de pontos BR9705899A (pt)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US08/753,576 US5740279A (en)	1996-11-26	1996-11-26	Cluster dot halftoning system

Publications (1)

Publication Number	Publication Date
BR9705899A true BR9705899A (pt)	1999-03-16

Family

ID=25031248

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR9705899A BR9705899A (pt)	1996-11-26	1997-11-26	Sistema de meios-tons por grupamento de pontos

Country Status (3)

Country	Link
US (1)	US5740279A (pt)
BR (1)	BR9705899A (pt)
CA (1)	CA2217750C (pt)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE69422353T2 (de) *	1993-09-03	2000-06-21	Agfa-Gevaert N.V., Mortsel	Verfahren zur Herstellung eines frequenzmodulierten Halbtonrasters
US5859955A (en) *	1997-01-21	1999-01-12	Xerox Corporation	Stochastically clustered dot halftoning system
US6146799A (en) *	1998-06-17	2000-11-14	Agfa-Gevaert	Method for printing continuous tone images with high density resolution
US6304340B1 (en)	1998-11-18	2001-10-16	Xerox Corporation	Composite halftone screens with stochastically distributed clusters or lines
US6433891B1 (en)	1998-12-14	2002-08-13	Oak Technology, Inc.	Stochastic screening method with dot pattern regularity control and dot growth
GB9915365D0 (en) *	1999-07-02	1999-09-01	Software 2000 Ltd	Stochastic screens for printing
JP2002099401A (ja) *	2000-09-25	2002-04-05	Toshiba Tec Corp	カラープリンタおよびそのドライバソフトウェアを格納した記憶媒体
US7262879B2 (en) *	2001-03-28	2007-08-28	Sharp Laboratories Of America, Inc.	Method for screening of halftone images
US7167185B1 (en)	2002-03-22	2007-01-23	Kla- Tencor Technologies Corporation	Visualization of photomask databases
US20040136035A1 (en) *	2002-12-05	2004-07-15	Rudi Bartels	Method for generating a screened representation of an image
US7557962B2 (en) *	2004-07-13	2009-07-07	Toshiba Corporation	System and method for tone-dependent multi-frequency halftone screening
US7468814B2 (en) *	2005-02-08	2008-12-23	Astro-Med, Inc.	Algorithm for controlling half toning process
US9811923B2 (en)	2015-09-24	2017-11-07	Snaptrack, Inc.	Stochastic temporal dithering for color display devices

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4149194A (en) *	1977-07-07	1979-04-10	Xerox Corporation	Variable angle electronic halftone screening
EP0074422B1 (de) *	1981-09-12	1985-07-03	DR.-ING. RUDOLF HELL GmbH	Verfahren zur Herstellung von Druckformen mittels unregelmässig verteilter Druckpunkte
DE3634939A1 (de) *	1986-10-14	1988-04-28	Du Pont Deutschland	Verfahren zum aufzeichnen von quasihalbtonbildern
JPH02145085A (ja) *	1988-11-25	1990-06-04	Fuji Xerox Co Ltd	フィルム画像読取装置
US5181162A (en) *	1989-12-06	1993-01-19	Eastman Kodak Company	Document management and production system
US5341228A (en) *	1990-12-04	1994-08-23	Research Corporation Technologies	Method and apparatus for halftone rendering of a gray scale image using a blue noise mask
US5704021A (en) *	1994-01-27	1997-12-30	Hewlett-Packard Company	Adaptive color rendering by an inkjet printer based on object type
US5579446A (en) *	1994-01-27	1996-11-26	Hewlett-Packard Company	Manual/automatic user option for color printing of different types of objects
DE69524651T2 (de) *	1994-01-27	2002-06-13	Hewlett-Packard Co.(A Delaware Corporation), Palo Alto	Drucksystem und -methode
US5394252A (en) *	1994-03-02	1995-02-28	Xerox Corporation	Hybrid quantization method for color document reproduction
US5673121A (en) *	1996-06-17	1997-09-30	Xerox Corporation	Stochastic halftoning screening method

1996
- 1996-11-26 US US08/753,576 patent/US5740279A/en not_active Expired - Lifetime
1997
- 1997-10-08 CA CA002217750A patent/CA2217750C/en not_active Expired - Fee Related
- 1997-11-26 BR BR9705899A patent/BR9705899A/pt not_active IP Right Cessation

Also Published As

Publication number	Publication date
CA2217750A1 (en)	1998-05-26
CA2217750C (en)	2000-05-16
US5740279A (en)	1998-04-14

Publication	Publication Date	Title
BR9705080A (pt)	1999-06-29	Sistema de impressão distribuído
BR9708913A (pt)	1999-08-03	Sistema de telecomunicação
BR9602740A (pt)	1998-09-08	Sistema de impressão
BR9600719A (pt)	1997-12-30	Sistema de impressão compartilhado por usuários
PT1226904E (pt)	2003-11-28	Sistema de barbear
BR9708346A (pt)	1999-08-03	Sistema de barbear
BR9606994A (pt)	1997-10-28	Sistema de distribuição de tinta
BR9510571A (pt)	1998-05-19	Sistema de fixação
BR9711476B1 (pt)	2010-08-10	Sistema de adaptador.
BR9704057A (pt)	1998-11-10	Sistema de engrenagens
BR9704486B1 (pt)	2010-08-10	sistema de medição.
BR9509088A (pt)	1998-07-21	Sistema de vácuo
BR9504219A (pt)	1996-07-30	Sistema de impressao
BR9408210A (pt)	1997-08-26	Sistema de sinalização
BR9705899A (pt)	1999-03-16	Sistema de meios-tons por grupamento de pontos
PT876542E (pt)	2003-10-31	Sistema de sepultura
BR9708838A (pt)	1999-08-03	Sistema de extensão
BR9401762A (pt)	1995-01-17	Sistema de telealarme
BR9609224A (pt)	1999-05-11	Sistema
CH687493GA3 (de)	1996-12-31	Schwingsystem.
BR9705059A (pt)	1999-06-08	Sistema de montagem de motores de arranque
BR9602213A (pt)	1998-09-08	Sistema de autoresgate
PT102213A (pt)	2000-04-28	Sistema de simplificacao telefonica
BR9500107A (pt)	1995-09-12	Sistema de anti-assalto
BR9403298A (pt)	1996-05-28	Sistema de telecomicio

Legal Events

Date	Code	Title	Description
2008-01-02	B08F	Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]	Free format text: REFERENTE A 10A ANUIDADE.
2008-06-03	B08K	Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]	Free format text: REFERENTE AO DESPACHO PUBLICADO NA RPI 1930 DE 02/01/2008.