IT1251794B - Metodo e dispositivo per cancellazione di interferenza di moire' in visualizzatore a tubo catodico a colori. - Google Patents

Metodo e dispositivo per cancellazione di interferenza di moire' in visualizzatore a tubo catodico a colori.

Info

Publication number
IT1251794B
IT1251794B ITMI911959A ITMI911959A IT1251794B IT 1251794 B IT1251794 B IT 1251794B IT MI911959 A ITMI911959 A IT MI911959A IT MI911959 A ITMI911959 A IT MI911959A IT 1251794 B IT1251794 B IT 1251794B
Authority
IT
Italy
Prior art keywords
interference
phase
moiré
cancellation
moire
Prior art date
Application number
ITMI911959A
Other languages
English (en)
Inventor
Abraham E Rindal
Original Assignee
Sun Microsystems 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.)
Filing date
Publication date
Application filed by Sun Microsystems Inc filed Critical Sun Microsystems Inc
Publication of ITMI911959A0 publication Critical patent/ITMI911959A0/it
Publication of ITMI911959A1 publication Critical patent/ITMI911959A1/it
Application granted granted Critical
Publication of IT1251794B publication Critical patent/IT1251794B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/646—Circuits for processing colour signals for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

Si elimina l'interferenza di Moiré in tubi a raggi catodici (CRT) spostando alternativamente la fase del segnale di sincronizzazione orizzontale o dei segnali video, così che la fase di ciascuna linea video, e quindi la fase dell'interferenza di Moiré risultante associata con quella linea video, sia anche spostata alternativamente. La fase delle interferenze di Moiré è spostata in modo che la persistenza della visione nell'occhio umano medi le variazioni di intensità di punti di fosforo di fase opposta che si hanno su linee di scansione e/o su campi verticali alternati. All'osservazione da parte di un utilizzatore del CRT, risulta la cancellazione ottica delle figure di interferenza di Moiré.
ITMI911959A 1991-01-18 1991-07-15 Metodo e dispositivo per cancellazione di interferenza di moire' in visualizzatore a tubo catodico a colori. IT1251794B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/642,817 US5107188A (en) 1991-01-18 1991-01-18 Method and apparatus for cancellation of Moire interference in color cathode ray tube displays

Publications (3)

Publication Number Publication Date
ITMI911959A0 ITMI911959A0 (it) 1991-07-15
ITMI911959A1 ITMI911959A1 (it) 1993-01-15
IT1251794B true IT1251794B (it) 1995-05-26

Family

ID=24578149

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI911959A IT1251794B (it) 1991-01-18 1991-07-15 Metodo e dispositivo per cancellazione di interferenza di moire' in visualizzatore a tubo catodico a colori.

Country Status (12)

Country Link
US (1) US5107188A (it)
KR (1) KR940011068B1 (it)
CN (2) CN1024385C (it)
CA (1) CA2039904C (it)
DE (1) DE4200699C2 (it)
FR (1) FR2671926B1 (it)
GB (1) GB2252025B (it)
HK (1) HK75595A (it)
IT (1) IT1251794B (it)
NL (1) NL194419C (it)
SG (1) SG23995G (it)
TW (1) TW222734B (it)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0557970B1 (en) * 1992-02-25 1998-06-10 Matsushita Electric Industrial Co., Ltd. Moire cancel circuit
US5440353A (en) * 1992-02-25 1995-08-08 Matsushita Electric Industrial Co., Ltd. Display monitor including moire cancellation circuit
US5659339A (en) * 1994-09-30 1997-08-19 Sun Microsystems, Inc. Method and apparatus for reducing electromagnetic interference radiated by flat panel display systems
GB2294172A (en) * 1994-10-14 1996-04-17 Ibm Moire interference detection for raster-scanned CRT displays
CN1059994C (zh) * 1994-11-29 2000-12-27 联华电子股份有限公司 相位延迟装置
JP3013736B2 (ja) * 1995-03-15 2000-02-28 日本電気株式会社 映像帯域制御装置を有する表示装置
KR0152854B1 (ko) * 1995-03-17 1998-10-15 구자홍 씨알티의 모아레 제거회로
US5841247A (en) * 1995-11-24 1998-11-24 U.S. Philips Corporation Cathode ray tube, display system incorporating same and computer including control means for display system
US6020939A (en) * 1996-01-19 2000-02-01 Sun Microsystems, Inc. Method and apparatus for reducing electromagnetic interference radiated by cathode ray tube displays
US5929574A (en) * 1996-06-29 1999-07-27 Samsung Electronics Co., Ltd. Moire clear circuit
US5757338A (en) * 1996-08-21 1998-05-26 Neomagic Corp. EMI reduction for a flat-panel display controller using horizontal-line based spread spectrum
US6239772B1 (en) * 1998-02-17 2001-05-29 U.S. Philips Corporation Video moire reduction
US6281889B1 (en) * 1998-03-02 2001-08-28 Motorola, Inc. Moire cancellation circuit
FR2779862A1 (fr) * 1998-06-10 1999-12-17 Sgs Thomson Microelectronics Dispositif anti moire d'ecran a tube cathodique
US6225762B1 (en) 1998-10-01 2001-05-01 Sony Corporation Method and apparatus for providing moiré effect correction on a multi-scan display monitor
US6094018A (en) * 1998-10-01 2000-07-25 Sony Corporation Method and apparatus for providing moire effect correction based on displayed image resolution
US6348903B1 (en) * 1999-03-18 2002-02-19 Multivideo Labs, Inc. Dynamic determination of moire interference on a CRT display with correction selectively applicable to sections of lines
US6850651B2 (en) * 2001-07-02 2005-02-01 Corel Corporation Moiré correction in images
US6950211B2 (en) * 2001-07-05 2005-09-27 Corel Corporation Fine moire correction in images
US6836062B2 (en) * 2002-05-14 2004-12-28 Samsung Sdi Co., Ltd. Cathode ray tube having color selection apparatus
KR100468732B1 (ko) * 2002-05-30 2005-01-29 삼성전자주식회사 Ｃｒｔ 모니터 시스템을 위한 수평 모아레 제거 장치 및방법
US7515646B2 (en) 2004-02-05 2009-04-07 Lexmark International, Inc. Method and apparatus for reducing EMI emissions for data signals traveling over a data pathway
CN101296566B (zh) 2007-04-29 2011-06-22 鸿富锦精密工业（深圳）有限公司 电气元件载板及其制造方法
CN104751802B (zh) * 2015-04-20 2017-12-08 广东威创视讯科技股份有限公司 Led显示屏扫描方法、led显示屏控制装置及系统

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848083A (en) * 1965-01-04 1974-11-12 Xerox Corp Staggered scan facsimile
US4037133A (en) * 1976-04-12 1977-07-19 Electrohome Limited Compensation of cathode ray tube for moire
US4025952A (en) * 1976-06-09 1977-05-24 Gte Sylvania Incorporated Vertical synchronizing circuit
US4336558A (en) * 1980-04-23 1982-06-22 American Hoechst Corp. Imaging system and method with reduced moire interference
SU960913A1 (ru) * 1980-07-02 1982-09-23 Институт Кибернетики Ан Усср Устройство дл отображени информации на экране цветной электронно-лучевой трубки
SU915287A1 (ru) * 1980-07-08 1982-03-23 Vadim N Bezrukov Устройство контроля многоградационного статического изображения 1
JPH0795806B2 (ja) * 1986-02-07 1995-10-11 キヤノン株式会社 画像処理装置
JPS639275A (ja) * 1986-06-30 1988-01-14 Canon Inc 画像情報処理装置
JP2585690B2 (ja) * 1988-02-26 1997-02-26 三菱電機株式会社 シヤドウマスク式カラー陰極線管を用いたデイスプレイ装置

Also Published As

Publication number Publication date
FR2671926A1 (fr) 1992-07-24
SG23995G (en) 1995-06-16
GB2252025A (en) 1992-07-22
US5107188A (en) 1992-04-21
CN1063393A (zh) 1992-08-05
TW222734B (it) 1994-04-21
DE4200699C2 (de) 2001-07-26
CN1024385C (zh) 1994-04-27
FR2671926B1 (fr) 1995-11-24
GB9105920D0 (en) 1991-05-08
CN1031910C (zh) 1996-05-29
KR920015854A (ko) 1992-08-27
ITMI911959A1 (it) 1993-01-15
ITMI911959A0 (it) 1991-07-15
NL194419C (nl) 2002-03-04
KR940011068B1 (ko) 1994-11-22
GB2252025B (en) 1994-11-16
CN1086651A (zh) 1994-05-11
DE4200699A1 (de) 1992-07-23
CA2039904A1 (en) 1992-07-19
HK75595A (en) 1995-05-26
NL194419B (nl) 2001-11-01
NL9200073A (nl) 1992-08-17
CA2039904C (en) 1998-06-30

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970729