IT1272496B - Circuito di correzione della forma d'onda di segnali di deflessione - Google Patents

Circuito di correzione della forma d'onda di segnali di deflessione

Info

Publication number
IT1272496B
IT1272496B ITMI931772A ITMI931772A IT1272496B IT 1272496 B IT1272496 B IT 1272496B IT MI931772 A ITMI931772 A IT MI931772A IT MI931772 A ITMI931772 A IT MI931772A IT 1272496 B IT1272496 B IT 1272496B
Authority
IT
Italy
Prior art keywords
deflection
modulation
signal
correction circuit
wave form
Prior art date
Application number
ITMI931772A
Other languages
English (en)
Inventor
David Ross Jackson
Kenneth Jay Helfrich
Original Assignee
Thomson Consumer Electronics
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 Thomson Consumer Electronics filed Critical Thomson Consumer Electronics
Publication of ITMI931772A0 publication Critical patent/ITMI931772A0/it
Publication of ITMI931772A1 publication Critical patent/ITMI931772A1/it
Application granted granted Critical
Publication of IT1272496B publication Critical patent/IT1272496B/it

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
    • H04N3/233—Distortion correction, e.g. for pincushion distortion correction, S-correction using active elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H04N9/28—Arrangements for convergence or focusing

Landscapes

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

Abstract

Un apparato di deflessione comprende un amplificatore di deflessione (Q2), accoppiato ad un circuito di modulazione (400) del segnale di deflessione costituito, ad esempio, da un modulatore a diodo. L'apparato comprende pure una sorgente (U1) per la generazione di un segnale di modulazione. Il segnale di modulazione (est-ovest) comporta una componente periodica simmetrica alternata, presentante una prima porzione ed una seconda porzione uguali di un periodo di traccia. Un amplificatore a retroazione (U2, Q1) altera l'ampiezza di una prima porzione del periodo di traccia rispetto ad una seconda porzione del periodo di traccia, allo scopo di rendere asimmetrica la componente alternata. La componente alternata, di tipo asimmetrico viene alimentata al circuito di modulazione del segnale di deflessione, per la modulazione di detto segnale di deflessione.Figura 4.
ITMI931772A 1992-09-04 1993-08-04 Circuito di correzione della forma d'onda di segnali di deflessione IT1272496B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB929218735A GB9218735D0 (en) 1992-09-04 1992-09-04 Horizontal deflection waveform correction circuit

Publications (3)

Publication Number Publication Date
ITMI931772A0 ITMI931772A0 (it) 1993-08-04
ITMI931772A1 ITMI931772A1 (it) 1995-02-04
IT1272496B true IT1272496B (it) 1997-06-23

Family

ID=10721391

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI931772A IT1272496B (it) 1992-09-04 1993-08-04 Circuito di correzione della forma d'onda di segnali di deflessione

Country Status (13)

Country Link
US (2) US5323092A (it)
EP (3) EP0910207B1 (it)
JP (3) JP3522308B2 (it)
KR (2) KR100282690B1 (it)
CN (3) CN1045510C (it)
DE (4) DE4327822A1 (it)
ES (2) ES2133341T3 (it)
GB (1) GB9218735D0 (it)
IT (1) IT1272496B (it)
MX (2) MX9305218A (it)
MY (3) MY110668A (it)
SG (1) SG65544A1 (it)
TW (2) TW209327B (it)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW319939B (it) * 1993-12-13 1997-11-11 Thomson Consumer Electronics
CN1039471C (zh) * 1994-05-12 1998-08-05 中强电子股份有限公司 连续可调式线性线圈电路装置
KR970009501B1 (en) * 1994-08-10 1997-06-13 Lg Electronics Inc An apparatus for the automatic control of side pincushion
TW370664B (en) * 1995-06-26 1999-09-21 Mitsubishi Electric Corp Device for controlling a horizontal raster display width
US6013989A (en) * 1996-05-20 2000-01-11 Samsung Electronics Co., Ltd. Wide-band horizontal linearity correction circuit
US5883477A (en) * 1996-10-21 1999-03-16 Thomson Consumer Electronics, Inc. Pincushion control circuit
US5841248A (en) * 1997-04-30 1998-11-24 Rca Thomson Licensing Corporation Charge controlled raster correction circuit
KR19990003852A (ko) * 1997-06-26 1999-01-15 배순훈 모니터에 있어서 직류-직류 컨버터의 안정화 회로
EP0997867A4 (en) * 1998-05-22 2005-08-24 Matsushita Electric Ind Co Ltd HORIZONTAL DISTORTION CORRECTION DEVICE FOR CATHODIC TUBE SCREEN IMAGE
US6407519B1 (en) * 1999-06-07 2002-06-18 Matsushita Electric Industrial Co., Ltd. Cathode-ray tube system capable of providing beam spots of a small diameter
US6351086B1 (en) * 1999-09-30 2002-02-26 Thomson Lincensing S. A. Display correction waveform generator for multiple scanning
US6320332B1 (en) 1999-10-08 2001-11-20 Thomson Licensing S.A. Raster distortion correction circuit
WO2001047246A1 (en) * 1999-12-21 2001-06-28 Thomson Licensing S.A. Display correction waveform generator for multiple scanning frequencies
JP2001339618A (ja) * 2000-05-25 2001-12-07 Mitsubishi Electric Corp 偏向歪み補正回路
US6552504B2 (en) * 2000-08-25 2003-04-22 Thomson Licensing Sa Deflection circuit with a feedback controlled capacitive transformation
US6515439B2 (en) * 2000-12-25 2003-02-04 Sanyo Electric Co., Ltd. Vertical deflection driving circuit
US6894731B2 (en) * 2001-08-31 2005-05-17 Thomson Licensing S.A. Raster distortion correction arrangement
US6614193B2 (en) * 2001-08-31 2003-09-02 Thomson Licensing S.A. Deflection current modulation circuit
US6717377B1 (en) * 2001-10-31 2004-04-06 Zilog, Inc. Circuit and method for reducing east-west geometry mismatch between the top and bottom of a raster display
US7170239B2 (en) * 2001-10-31 2007-01-30 Zilog, Inc. Circuit and method for reducing east-west geometry mismatch between the top and bottom of a raster display

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2758248A (en) * 1955-02-21 1956-08-07 Gen Electric Anti-pincushion circuit
JPS5417308Y2 (it) * 1973-05-19 1979-07-04
US4093895A (en) * 1976-05-03 1978-06-06 Gte Sylvania Incorporated Assymetric top-bottom pincushion correction circuit
US4220898A (en) * 1977-11-25 1980-09-02 Rca Corporation Raster distortion correction circuit
ES8404107A1 (es) * 1982-04-23 1984-04-01 Rca Corp Perfeccionamientos introducidos en un circuito de suministro de potencia y de desviacion modulada.
US4469992A (en) * 1983-07-20 1984-09-04 Deutsche Thomson-Brandt Gmbh Circuit for correcting east-west pincushion distortions
GB8506107D0 (en) * 1985-03-08 1985-04-11 Rca Corp East-west vertical parabola shaper
DE3510138A1 (de) * 1985-03-21 1986-09-25 Standard Elektrik Lorenz Ag, 7000 Stuttgart Horizontal-ablenkschaltung
US4677350A (en) * 1986-08-18 1987-06-30 Rca Corporation Raster width correction apparatus for multi scan frequency monitors
US4991119A (en) * 1988-01-07 1991-02-05 U.S. Philips Corporation Picture display device including a waveform generator
US4968919A (en) * 1989-12-18 1990-11-06 Zenith Electronics Corporation Differential east-west pin-cushion distortion correction circuit
US4965495A (en) * 1990-04-30 1990-10-23 Rca Licensing Corporation Parabolic voltage generating circuit
US5043637A (en) * 1990-12-14 1991-08-27 Thomson Consumer Electronics, Inc. Transformer coupled voltage clamp for pincushion correction circuit
GB9100123D0 (en) * 1991-01-04 1991-02-20 Rca Licensing Corp Raster corrected horizontal deflection

Also Published As

Publication number Publication date
EP0588114A2 (en) 1994-03-23
JPH06195033A (ja) 1994-07-15
JP3368942B2 (ja) 2003-01-20
US5475286A (en) 1995-12-12
DE69331885D1 (de) 2002-06-06
DE69331885T2 (de) 2002-10-10
TW293134B (it) 1996-12-11
EP0910207A2 (en) 1999-04-21
KR100282690B1 (ko) 2001-02-15
MX9305218A (es) 1994-05-31
CN1045510C (zh) 1999-10-06
ITMI931772A0 (it) 1993-08-04
CN1085033A (zh) 1994-04-06
EP0588114A3 (en) 1994-08-17
DE4327822A1 (de) 1994-03-10
US5323092A (en) 1994-06-21
SG65544A1 (en) 1999-06-22
CN1048130C (zh) 2000-01-05
JP3452612B2 (ja) 2003-09-29
ITMI931772A1 (it) 1995-02-04
MY110668A (en) 1999-01-30
JPH06195032A (ja) 1994-07-15
ES2173676T3 (es) 2002-10-16
CN1085715A (zh) 1994-04-20
DE69325754T2 (de) 1999-11-18
TW209327B (en) 1993-07-11
KR940008514A (ko) 1994-04-29
MX9305429A (es) 1994-06-30
KR940007116A (ko) 1994-04-26
MY111253A (en) 1999-10-30
ES2133341T3 (es) 1999-09-16
KR100284957B1 (ko) 2001-03-15
EP0588115B1 (en) 1999-07-28
EP0910207A3 (en) 1999-06-02
EP0588115A3 (en) 1994-08-17
EP0588114B1 (en) 1998-07-08
CN1054954C (zh) 2000-07-26
JP3522308B2 (ja) 2004-04-26
EP0588115A2 (en) 1994-03-23
DE69319520T2 (de) 1998-12-17
MY109525A (en) 1997-02-28
JPH06189154A (ja) 1994-07-08
EP0910207B1 (en) 2002-05-02
DE69325754D1 (de) 1999-09-02
DE69319520D1 (de) 1998-08-13
GB9218735D0 (en) 1992-10-21
CN1085371A (zh) 1994-04-13

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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: 19970827