FR2592262A1 - Appareil de reglage automatique du gain d'un signal video brouille - Google Patents
Appareil de reglage automatique du gain d'un signal video brouilleInfo
- Publication number
- FR2592262A1 FR2592262A1 FR8618094A FR8618094A FR2592262A1 FR 2592262 A1 FR2592262 A1 FR 2592262A1 FR 8618094 A FR8618094 A FR 8618094A FR 8618094 A FR8618094 A FR 8618094A FR 2592262 A1 FR2592262 A1 FR 2592262A1
- Authority
- FR
- France
- Prior art keywords
- signal
- video signal
- video
- gain
- scrambled
- 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
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/52—Automatic gain control
- H04N5/53—Keyed automatic gain control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
- H04N7/171—Systems operating in the amplitude domain of the television signal
- H04N7/1713—Systems operating in the amplitude domain of the television signal by modifying synchronisation signals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Receiver Circuits (AREA)
- Control Of Amplification And Gain Control (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
L'invention concerne un appareil, dans un système de traitement d'un signal de télévision diffusé destiné à une utilisation avec un décodeur de signaux vidéo sensible à un signal brouillé, le système ayant un canal de signaux vidéo contenant un moyen d'entrée d'un signal de télévision diffusé, un moyen détecteur vidéo répondant à un signal reçu de télévision pour produire un signal vidéo détecté et un moyen de réglage automatique du gain pour maintenir un gain donné du signal. Selon l'invention, l'appareil comprend un moyen d'interface 110 pour recevoir un signal vidéo non brouillé dérivé d'un signal reçu brouillé et qui produit un signal de commande I' d'une grandeur en rapport avec un paramètre du signal vidéo dont le brouillage est supprimé et un moyen 70 pour appliquer le signal de commande au moyen de réglage automatique du gain 62 pour maintenir un gain souhaité, en présence d'un signal brouillé reçu. L'invention s'applique notamment à la télévision par abonnement. (CF DESSIN DANS BOPI)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/813,135 US4706285A (en) | 1985-12-24 | 1985-12-24 | Automatic gain control of a scrambled video signal |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2592262A1 true FR2592262A1 (fr) | 1987-06-26 |
FR2592262B1 FR2592262B1 (fr) | 1993-12-03 |
Family
ID=25211541
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8618094A Expired - Fee Related FR2592262B1 (fr) | 1985-12-24 | 1986-12-23 | Appareil de reglage automatique du gain d'un signal video brouille |
Country Status (7)
Country | Link |
---|---|
US (1) | US4706285A (fr) |
JP (1) | JP2556318B2 (fr) |
KR (1) | KR950002667B1 (fr) |
CA (1) | CA1278371C (fr) |
DE (1) | DE3644290A1 (fr) |
FR (1) | FR2592262B1 (fr) |
GB (1) | GB2184904B (fr) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4670904A (en) * | 1986-01-15 | 1987-06-02 | Rca Corporation | System for processing a scrambled video signal |
JPS62264778A (ja) * | 1986-05-12 | 1987-11-17 | Toshiba Corp | Agc回路 |
JPS6448584A (en) * | 1987-08-18 | 1989-02-23 | Alps Electric Co Ltd | Catv converter |
JPH01137391U (fr) * | 1988-03-09 | 1989-09-20 | ||
US5133009A (en) * | 1990-10-04 | 1992-07-21 | Thomson Consumer Electronics, Inc. | Method and apparatus for defeating the operation of an ic built-in noise inverter |
US5862219A (en) * | 1995-05-12 | 1999-01-19 | General Instrument Corporation | Cable television setback decoder automatic control |
US5812665A (en) * | 1995-06-08 | 1998-09-22 | Ictv, Inc. | Switched channel system |
US5644637A (en) * | 1995-09-27 | 1997-07-01 | General Instrument Corporation Of Delaware | Method and apparatus for recovering synchronizing signals in scrambled television pictures |
TW420952B (en) * | 1997-08-26 | 2001-02-01 | Eagle Comtronics Inc | Sync suppression television security system with addressable sync restoration |
DE102004061389A1 (de) | 2004-12-21 | 2006-06-22 | Mitsubishi Polyester Film Gmbh | Biaxial orientierte Polyesterfolie, die Siliziumdioxid und Titandioxid enthält |
US8074248B2 (en) | 2005-07-26 | 2011-12-06 | Activevideo Networks, Inc. | System and method for providing video content associated with a source image to a television in a communication network |
US9042454B2 (en) | 2007-01-12 | 2015-05-26 | Activevideo Networks, Inc. | Interactive encoded content system including object models for viewing on a remote device |
US9826197B2 (en) | 2007-01-12 | 2017-11-21 | Activevideo Networks, Inc. | Providing television broadcasts over a managed network and interactive content over an unmanaged network to a client device |
AU2011315950B2 (en) | 2010-10-14 | 2015-09-03 | Activevideo Networks, Inc. | Streaming digital video between video devices using a cable television system |
WO2012138660A2 (fr) | 2011-04-07 | 2012-10-11 | Activevideo Networks, Inc. | Réduction de la latence dans des réseaux de distribution vidéo à l'aide de débits binaires adaptatifs |
US10409445B2 (en) | 2012-01-09 | 2019-09-10 | Activevideo Networks, Inc. | Rendering of an interactive lean-backward user interface on a television |
US9800945B2 (en) | 2012-04-03 | 2017-10-24 | Activevideo Networks, Inc. | Class-based intelligent multiplexing over unmanaged networks |
US9123084B2 (en) | 2012-04-12 | 2015-09-01 | Activevideo Networks, Inc. | Graphical application integration with MPEG objects |
WO2014145921A1 (fr) | 2013-03-15 | 2014-09-18 | Activevideo Networks, Inc. | Système à modes multiples et procédé de fourniture de contenu vidéo sélectionnable par un utilisateur |
US9219922B2 (en) | 2013-06-06 | 2015-12-22 | Activevideo Networks, Inc. | System and method for exploiting scene graph information in construction of an encoded video sequence |
US9294785B2 (en) | 2013-06-06 | 2016-03-22 | Activevideo Networks, Inc. | System and method for exploiting scene graph information in construction of an encoded video sequence |
EP3005712A1 (fr) | 2013-06-06 | 2016-04-13 | ActiveVideo Networks, Inc. | Rendu d'interface utilisateur en incrustation sur une vidéo source |
US9788029B2 (en) | 2014-04-25 | 2017-10-10 | Activevideo Networks, Inc. | Intelligent multiplexing using class-based, multi-dimensioned decision logic for managed networks |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4408225A (en) * | 1981-07-06 | 1983-10-04 | Zenith Radio Corporation | Subscription television decoder |
US4523228A (en) * | 1983-02-15 | 1985-06-11 | Scientific Atlanta Inc. | Sync suppression scrambling of television signals for subscription TV |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4509210A (en) * | 1981-11-30 | 1985-04-02 | Rca Corporation | Television receiver adaptable for descrambler module |
US4554581A (en) * | 1982-12-20 | 1985-11-19 | Zenith Radio Corporation | STV Decoder with improved data signal recognition capability |
DE3343307A1 (de) * | 1983-11-30 | 1985-06-05 | Blaupunkt-Werke Gmbh, 3200 Hildesheim | Verfahren zum verschluesseln und entschluesseln von analogen signalen, sowie schaltungsanordnung zur durchfuehrung des verfahrens |
JPS60239188A (ja) * | 1984-05-12 | 1985-11-28 | Sony Corp | テレビジヨン信号復調装置 |
-
1985
- 1985-12-24 US US06/813,135 patent/US4706285A/en not_active Expired - Lifetime
-
1986
- 1986-11-28 CA CA000524112A patent/CA1278371C/fr not_active Expired - Lifetime
- 1986-12-23 DE DE19863644290 patent/DE3644290A1/de active Granted
- 1986-12-23 GB GB8630677A patent/GB2184904B/en not_active Expired - Fee Related
- 1986-12-23 FR FR8618094A patent/FR2592262B1/fr not_active Expired - Fee Related
- 1986-12-23 KR KR1019860011125A patent/KR950002667B1/ko not_active IP Right Cessation
- 1986-12-24 JP JP61315954A patent/JP2556318B2/ja not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4408225A (en) * | 1981-07-06 | 1983-10-04 | Zenith Radio Corporation | Subscription television decoder |
US4523228A (en) * | 1983-02-15 | 1985-06-11 | Scientific Atlanta Inc. | Sync suppression scrambling of television signals for subscription TV |
Also Published As
Publication number | Publication date |
---|---|
CA1278371C (fr) | 1990-12-27 |
DE3644290A1 (de) | 1987-06-25 |
KR950002667B1 (ko) | 1995-03-24 |
FR2592262B1 (fr) | 1993-12-03 |
GB2184904B (en) | 1990-01-31 |
KR870006801A (ko) | 1987-07-14 |
DE3644290C2 (fr) | 1989-09-07 |
GB2184904A (en) | 1987-07-01 |
US4706285A (en) | 1987-11-10 |
GB8630677D0 (en) | 1987-02-04 |
JP2556318B2 (ja) | 1996-11-20 |
JPS62165494A (ja) | 1987-07-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2592262A1 (fr) | Appareil de reglage automatique du gain d'un signal video brouille | |
MY108916A (en) | Automatic gain control apparatus for a digital television signal receiver | |
KR870009584A (ko) | 비데오 신호 처리 시스템 | |
US4163252A (en) | Subscription television decoder apparatus | |
TW350186B (en) | TV set receiver with character data function | |
CA2255925A1 (fr) | Codeur de standard btsc | |
FI891979A (fi) | Dynaaminen ohjausvalikko televisiojärjestelmää tai muuta sellaista varten | |
AU1997383A (en) | Image processing system | |
EP0856994A3 (fr) | Tête de câble à technologie numérique pour système de distribution de télévision par câble | |
ATE180373T1 (de) | Empfangsgerät und -verfahren | |
NZ501348A (en) | Method and apparatus for generating a display signal | |
DK0599132T3 (da) | System til behandling af et audiosignal | |
NO962909L (no) | System for integrering av digital audio og analog video for å danne sömlöse gjennomsiktige trekk for brukeren | |
MY110982A (en) | Method and apparatus for determining signal usability | |
TW329077B (en) | User channel selection control | |
MY107620A (en) | Method and apparatus for defeating the operation of an ic built-in noise inverter. | |
FR2420888A1 (fr) | Circuit de reglage automatique de la luminosite employant une boucle fermee de reglage stabilisee vis-a-vis d'une interruption par des signaux video de grande amplitude | |
FR2565443B1 (fr) | Procedes de diffusion et de reception de programmes sonores de haute qualite et dispositif de reception. | |
EP0061122A3 (fr) | Détecteur de falsification pour système de distribution de programmes par câble | |
ES2057055T3 (es) | Receptor de television con tratamiento digital y analogico de la señal de audio. | |
ES8406825A1 (es) | Perfeccionamientos introducidos en una instalacion para controlar automaticamente el nivel de corriente de imagen negra | |
KR960001545B1 (en) | Television tuning control apparatus | |
JPS5783971A (en) | Spot exposure control circuit | |
MY124092A (en) | Communication controlling method, communication controlling system and communication controlling apparatus | |
EP0129446A3 (fr) | Analyseur automatique de couleur, utilisant les niveaux vidéo maximum et minimum |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |