FR2420259A1 - Circuit de correction de la distorsion de coussin nord-sud de l'image obtenue sur l'ecran d'un tube cathodique, et recepteur video-frequence ainsi equipe - Google Patents
Circuit de correction de la distorsion de coussin nord-sud de l'image obtenue sur l'ecran d'un tube cathodique, et recepteur video-frequence ainsi equipeInfo
- Publication number
- FR2420259A1 FR2420259A1 FR7807282A FR7807282A FR2420259A1 FR 2420259 A1 FR2420259 A1 FR 2420259A1 FR 7807282 A FR7807282 A FR 7807282A FR 7807282 A FR7807282 A FR 7807282A FR 2420259 A1 FR2420259 A1 FR 2420259A1
- Authority
- FR
- France
- Prior art keywords
- crt
- vertical deflection
- deflection coil
- resonant circuit
- circuit
- 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.)
- Granted
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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Details Of Television Scanning (AREA)
Abstract
Circuit de correction de la distorsion de coussin nord-sud de l'image obtenue sur l'écran d'un tube cathodique. Ce circuit se compose d'un modulateur qui permet de générer des impulsions brèves modulées en amplitude en fonction du signal de balayage vertical, et synchronisées avec le milieu du retour horizontal, et d'un circuit de mise en forme à deux circuits résonnants faiblement couplés d'une manière réactive, qui permettent d'injecter dans la bobine de déviation verticale, un courant de correction, en phase avec le milieu de retour ligne, ayant pour fréquence la fréquence ligne, et ayant, pour un gain en tension maximum du circuit de mise en forme, un maximum au milieu de l'aller de balayage ligne. Un tel circuit de correction est utilisé dans les récepteurs vidéo-fréquence
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7807282A FR2420259A1 (fr) | 1978-03-14 | 1978-03-14 | Circuit de correction de la distorsion de coussin nord-sud de l'image obtenue sur l'ecran d'un tube cathodique, et recepteur video-frequence ainsi equipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7807282A FR2420259A1 (fr) | 1978-03-14 | 1978-03-14 | Circuit de correction de la distorsion de coussin nord-sud de l'image obtenue sur l'ecran d'un tube cathodique, et recepteur video-frequence ainsi equipe |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2420259A1 true FR2420259A1 (fr) | 1979-10-12 |
FR2420259B1 FR2420259B1 (fr) | 1982-03-05 |
Family
ID=9205750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7807282A Granted FR2420259A1 (fr) | 1978-03-14 | 1978-03-14 | Circuit de correction de la distorsion de coussin nord-sud de l'image obtenue sur l'ecran d'un tube cathodique, et recepteur video-frequence ainsi equipe |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2420259A1 (fr) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3479554A (en) * | 1967-08-14 | 1969-11-18 | Motorola Inc | Raster distortion correction circuit |
US3995196A (en) * | 1974-11-04 | 1976-11-30 | Zenith Radio Corporation | Low level pincushion correction circuit |
-
1978
- 1978-03-14 FR FR7807282A patent/FR2420259A1/fr active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3479554A (en) * | 1967-08-14 | 1969-11-18 | Motorola Inc | Raster distortion correction circuit |
US3995196A (en) * | 1974-11-04 | 1976-11-30 | Zenith Radio Corporation | Low level pincushion correction circuit |
Also Published As
Publication number | Publication date |
---|---|
FR2420259B1 (fr) | 1982-03-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |