TW344932B - Distortion correction circuit - Google Patents

Distortion correction circuit

Info

Publication number
TW344932B
TW344932B TW086107772A TW86107772A TW344932B TW 344932 B TW344932 B TW 344932B TW 086107772 A TW086107772 A TW 086107772A TW 86107772 A TW86107772 A TW 86107772A TW 344932 B TW344932 B TW 344932B
Authority
TW
Taiwan
Prior art keywords
read
memory means
conversion device
analog
correction circuit
Prior art date
Application number
TW086107772A
Other languages
English (en)
Inventor
Mikio Kajiwara
Masashi Ochiai
Original Assignee
Toshiba Co Ltd
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 Toshiba Co Ltd filed Critical Toshiba Co Ltd
Application granted granted Critical
Publication of TW344932B publication Critical patent/TW344932B/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
    • H04N3/23—Distortion correction, e.g. for pincushion distortion correction, S-correction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
    • H04N3/23—Distortion correction, e.g. for pincushion distortion correction, S-correction
    • H04N3/233—Distortion correction, e.g. for pincushion distortion correction, S-correction using active elements
    • H04N3/2335—Distortion correction, e.g. for pincushion distortion correction, S-correction using active elements with calculating means

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)
  • Processing Of Color Television Signals (AREA)
  • Picture Signal Circuits (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
TW086107772A 1996-07-26 1997-06-05 Distortion correction circuit TW344932B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19774996A JP3688399B2 (ja) 1996-07-26 1996-07-26 歪補正回路

Publications (1)

Publication Number Publication Date
TW344932B true TW344932B (en) 1998-11-11

Family

ID=16379712

Family Applications (1)

Application Number Title Priority Date Filing Date
TW086107772A TW344932B (en) 1996-07-26 1997-06-05 Distortion correction circuit

Country Status (7)

Country Link
US (1) US6002454A (zh)
EP (1) EP0821519B1 (zh)
JP (1) JP3688399B2 (zh)
KR (1) KR100276490B1 (zh)
CN (1) CN1096791C (zh)
DE (2) DE69703188T2 (zh)
TW (1) TW344932B (zh)

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US6191827B1 (en) * 1998-12-01 2001-02-20 Oplus Technologies Ltd. Electronic keystone correction for electronic devices with a visual display
US6496231B1 (en) * 1999-06-30 2002-12-17 Koninklijke Philips Electronics N.V. Method and apparatus for correcting convergence and geometry errors in display devices
US6433840B1 (en) * 1999-07-22 2002-08-13 Evans & Sutherland Computer Corporation Method and apparatus for multi-level image alignment
US20070127553A1 (en) 1999-08-13 2007-06-07 Viasat, Inc. Code Reuse Multiple Access For Satellite Return Link
US6292235B1 (en) * 1999-09-29 2001-09-18 Thomson Licensing S.A. Distortion correction system with switchable digital filter
NO20000656A (no) * 2000-02-09 2001-07-09 Knut Krogstad Digital korreksjonsmodul for videoprojektor
JP2004529374A (ja) * 2000-04-05 2004-09-24 ジェネシス・マイクロチップ・インコーポレーテッド 表示装置における誤差を修正する方法及び装置
JP2001333434A (ja) * 2000-05-19 2001-11-30 Sony Corp 画像処理装置および方法、並びに記録媒体
JP2002112069A (ja) * 2000-07-25 2002-04-12 Matsushita Electric Ind Co Ltd 画像歪補正装置および画像歪補正方法
US7006255B2 (en) * 2001-03-29 2006-02-28 Sharp Laboratories Of America Adaptive image filtering based on a distance transform
US6977693B2 (en) * 2001-06-11 2005-12-20 Sun Microsystems, Inc. Networked video projector apparatus and method of projecting a video frame on a video projector
US20030015975A1 (en) * 2001-07-17 2003-01-23 Marc Duranton Device for correcting geometrical faults of a cathode ray tube
JP3844075B2 (ja) * 2003-01-17 2006-11-08 セイコーエプソン株式会社 画像処理システム、プロジェクタ、プログラム、情報記憶媒体および画像処理方法
JP3871061B2 (ja) * 2003-03-25 2007-01-24 セイコーエプソン株式会社 画像処理システム、プロジェクタ、プログラム、情報記憶媒体および画像処理方法
WO2005029841A1 (en) * 2003-09-22 2005-03-31 Koninklijke Philips Electronics N.V. Display apparatus
CN100576874C (zh) * 2004-10-22 2009-12-30 康佳集团股份有限公司 矫正电子显示装置亮度不均的方法和电路
WO2008091410A2 (en) * 2006-10-03 2008-07-31 Viasat, Inc. Multi-service provider authentication
JP4781229B2 (ja) * 2006-11-01 2011-09-28 キヤノン株式会社 歪曲収差補正装置、撮像装置、及び歪曲収差補正装置の制御方法
CN101617354A (zh) 2006-12-12 2009-12-30 埃文斯和萨瑟兰计算机公司 用于校准单个调制器投影仪中的rgb光的系统和方法
FR2920939A1 (fr) * 2007-09-07 2009-03-13 St Microelectronics Sa Correction de deformation d'image
US8358317B2 (en) 2008-05-23 2013-01-22 Evans & Sutherland Computer Corporation System and method for displaying a planar image on a curved surface
US8702248B1 (en) 2008-06-11 2014-04-22 Evans & Sutherland Computer Corporation Projection method for reducing interpixel gaps on a viewing surface
US8077378B1 (en) 2008-11-12 2011-12-13 Evans & Sutherland Computer Corporation Calibration system and method for light modulation device
CN101771796B (zh) * 2008-12-29 2013-01-30 比亚迪股份有限公司 一种校正图像桶形失真的方法和装置
US9641826B1 (en) 2011-10-06 2017-05-02 Evans & Sutherland Computer Corporation System and method for displaying distant 3-D stereo on a dome surface
CN102724517B (zh) * 2012-05-16 2014-06-04 浙江大华技术股份有限公司 一种传输视频信号的方法、装置、系统和终端

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4101926A (en) * 1976-03-19 1978-07-18 Rca Corporation Television synchronizing apparatus
US4600945A (en) * 1983-03-31 1986-07-15 Rca Corporation Digital video processing system with raster distortion correction
JPH07104656B2 (ja) * 1989-02-21 1995-11-13 株式会社東芝 水平偏向回路
US5041764A (en) * 1990-10-22 1991-08-20 Zenith Electronics Corporation Horizontal misconvergence correction system for color video display
DE69207266T2 (de) * 1991-05-31 1996-07-18 Philips Electronics Nv Bildwiedergaberöhre mit Konvergenzkorrekturanordnung
EP0589512B1 (en) * 1992-09-22 1998-08-05 Koninklijke Philips Electronics N.V. Image distortion correction circuit for use in a display device
JP3222621B2 (ja) * 1993-05-07 2001-10-29 旭光学工業株式会社 画像信号入出力装置
JPH07131672A (ja) * 1993-10-28 1995-05-19 Mitsubishi Electric Corp ワイドアスペクトテレビジョン受像機
US5663615A (en) * 1994-10-20 1997-09-02 Hitachi, Ltd. Reciprocal deflection type CRT displaying apparatus
JPH0984035A (ja) * 1995-09-08 1997-03-28 Toshiba Corp ディジタルコンバーゼンス装置
EP0777198A1 (en) * 1995-11-30 1997-06-04 Victor Company Of Japan, Limited Image processing apparatus
US5784120A (en) * 1996-05-31 1998-07-21 Analog Devices, Inc. Video decoder adapted to compensate for time variations between successive horizontal/vertical synchronization pulses

Also Published As

Publication number Publication date
KR100276490B1 (ko) 2000-12-15
KR980013250A (ko) 1998-04-30
CN1096791C (zh) 2002-12-18
JPH1042163A (ja) 1998-02-13
US6002454A (en) 1999-12-14
DE69703188D1 (de) 2000-11-02
EP0821519B1 (en) 2000-09-27
JP3688399B2 (ja) 2005-08-24
DE821519T1 (de) 1998-08-13
CN1175156A (zh) 1998-03-04
EP0821519A3 (en) 1998-03-25
DE69703188T2 (de) 2001-08-09
EP0821519A2 (en) 1998-01-28

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