FR2426371A1 - Dispositif de linearite par correction en s pour un televiseur - Google Patents

Dispositif de linearite par correction en s pour un televiseur

Info

Publication number
FR2426371A1
FR2426371A1 FR7912468A FR7912468A FR2426371A1 FR 2426371 A1 FR2426371 A1 FR 2426371A1 FR 7912468 A FR7912468 A FR 7912468A FR 7912468 A FR7912468 A FR 7912468A FR 2426371 A1 FR2426371 A1 FR 2426371A1
Authority
FR
France
Prior art keywords
towards
sides
correction
current
progressive
Prior art date
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.)
Withdrawn
Application number
FR7912468A
Other languages
English (en)
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.)
RCA Corp
Original Assignee
RCA 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.)
Filing date
Publication date
Application filed by RCA Corp filed Critical RCA Corp
Publication of FR2426371A1 publication Critical patent/FR2426371A1/fr
Withdrawn legal-status Critical Current

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
    • H04N3/237—Distortion correction, e.g. for pincushion distortion correction, S-correction using passive elements, e.g. diodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)

Abstract

L'invention concerne un agencement pour dévier le faisceau d'électrons d'un tube-image à grand angle, et il comprend un enroulement déflecteur, un générateur de courant pour favoriser l'écoulement d'un courant récurrent à une fréquence de déviation dans l'enroulement afin de forcer le tube-image à balayer une trame sur sa face, qui a une tendance à une distorsion géométrique bilatérale ayant l'aspect d'une dilatation progressive vers ses côtés et d'une compression progressive vers son centre, un condensateur de correction de S couplé en série avec l'enroulement déflecteur pour corriger symétriquement la compression au centre, ce condensateur ayant tendance à provoquer une correction excessive de l'expansion progressive vers les côtés; et une impédance variable pour la correction de linéarité. Selon l'invention, l'impédance variable 40 varie d'une façon bilatéralement symétrique à la fréquence de déviation pour augmenter l'allure du changement du courant de déviation vers les côtés de la trame. L'invention s'applique notamment aux corrections de distorsion dans un téléviseur.
FR7912468A 1978-05-17 1979-05-16 Dispositif de linearite par correction en s pour un televiseur Withdrawn FR2426371A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/906,836 US4176303A (en) 1978-05-17 1978-05-17 Television S-correction linearity device

Publications (1)

Publication Number Publication Date
FR2426371A1 true FR2426371A1 (fr) 1979-12-14

Family

ID=25423065

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7912468A Withdrawn FR2426371A1 (fr) 1978-05-17 1979-05-16 Dispositif de linearite par correction en s pour un televiseur

Country Status (6)

Country Link
US (1) US4176303A (fr)
JP (1) JPS54152809A (fr)
DE (1) DE2920032A1 (fr)
FR (1) FR2426371A1 (fr)
GB (1) GB2021365B (fr)
IT (1) IT7922673A0 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4516058A (en) * 1981-05-11 1985-05-07 Rca Corporation Linearity corrected horizontal deflection circuit
US4503367A (en) * 1982-03-22 1985-03-05 Rca Corporation Deflection circuit with linearity correction
US4501995A (en) * 1982-04-06 1985-02-26 Tektronix, Inc. Automatic "S" correction circuit
US4533855A (en) * 1983-12-16 1985-08-06 Rca Corporation Switched capacitor S-correction circuit
GB8408694D0 (en) * 1984-04-04 1984-05-16 Rca Corp Dynamic "s" correction
JP2002010098A (ja) * 2000-06-27 2002-01-11 Matsushita Electric Ind Co Ltd 水平偏向回路および双方向水平偏向装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706908A (en) * 1970-08-03 1972-12-19 Motorola Inc Horizontal deflection control means

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5417309Y2 (fr) * 1973-08-25 1979-07-04
NL165903C (nl) * 1974-02-01 1981-05-15 Philips Nv Beeldweergeefinrichting voorzien van correctieorganen voor de horizontale lineariteit.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706908A (en) * 1970-08-03 1972-12-19 Motorola Inc Horizontal deflection control means

Also Published As

Publication number Publication date
US4176303A (en) 1979-11-27
GB2021365A (en) 1979-11-28
DE2920032A1 (de) 1979-11-22
JPS54152809A (en) 1979-12-01
IT7922673A0 (it) 1979-05-14
GB2021365B (en) 1982-10-06

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Legal Events

Date Code Title Description
ST Notification of lapse