FR2455410A1 - Circuit a signal de porte pour television - Google Patents
Circuit a signal de porte pour televisionInfo
- Publication number
- FR2455410A1 FR2455410A1 FR8008778A FR8008778A FR2455410A1 FR 2455410 A1 FR2455410 A1 FR 2455410A1 FR 8008778 A FR8008778 A FR 8008778A FR 8008778 A FR8008778 A FR 8008778A FR 2455410 A1 FR2455410 A1 FR 2455410A1
- Authority
- FR
- France
- Prior art keywords
- signal
- door
- circuit
- television
- delay
- 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
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/74—Circuits for processing colour signals for obtaining special effects
- H04N9/75—Chroma key
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/272—Means for inserting a foreground image in a background image, i.e. inlay, outlay
- H04N5/275—Generation of keying signals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Studio Circuits (AREA)
- Processing Of Color Television Signals (AREA)
Abstract
CIRCUIT A SIGNAL DE PORTE POUR TELEVISION, REALISE COMME UN GENERATEUR D'EFFETS SPECIAUX OU UN CIRCUIT-PORTE DE SATURATION. POUR PRODUIRE UN SIGNAL DE PORTE PAR LEQUEL AUCUN PHENOMENE DE PAPILLOTEMENT NE SOIT PRODUIT DANS UNE IMAGE DE TELEVISION ENTRELACEELORSQUE A L'ENDROIT D'UNE INVERSION DE SIGNAL ENTRE DEUX SIGNAUX VIDEO AU MOYEN DU SIGNAL DE PORTE, UN FORT CONTRASTE EST PRESENT, LE CIRCUIT EST REALISE AVEC UN DISPOSITIF A RETARD DE SIGNAL ET AVEC UN CIRCUIT COMBINEUR DE SIGNAUX POUR LE SIGNAL DE PORTE BIVALENT, APPARAISSANT SANS RETARD ET AVEC RETARD. LE DISPOSITIF DE RETARD DE SIGNAL PRESENTE DES TEMPS DE RETARD D'UNE PERIODE DE TRAME MOINS ET PLUS UNE PERIODE DE LIGNE OU D'UNE ET DE DEUX PERIODES DE LIGNE. LE RESULTAT EST UN SIGNAL DE PORTE VARIANT PROGRESSIVEMENT LA OU LE PHENOMENE DE PAPILLOTEMENT DANS L'IMAGE DE TELEVISION ENTRELACEE POURRAIT APPARAITRE. APPLICATION AUX APPAREILS DE STUDIO DE TELEVISION.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7903241A NL7903241A (nl) | 1979-04-25 | 1979-04-25 | Televisie sleutelsignaalschakeling. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2455410A1 true FR2455410A1 (fr) | 1980-11-21 |
FR2455410B1 FR2455410B1 (fr) | 1983-02-25 |
Family
ID=19833046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8008778A Granted FR2455410A1 (fr) | 1979-04-25 | 1980-04-18 | Circuit a signal de porte pour television |
Country Status (7)
Country | Link |
---|---|
US (1) | US4356512A (fr) |
JP (1) | JPS55143876A (fr) |
CA (1) | CA1157936A (fr) |
DE (1) | DE3015541A1 (fr) |
FR (1) | FR2455410A1 (fr) |
GB (1) | GB2048612B (fr) |
NL (1) | NL7903241A (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS589476A (ja) * | 1981-07-09 | 1983-01-19 | Sony Corp | キー信号調整装置 |
US4463372A (en) * | 1982-03-24 | 1984-07-31 | Ampex Corporation | Spatial transformation system including key signal generator |
DE3341371C2 (de) * | 1982-11-16 | 1989-09-21 | Dainippon Ink And Chemicals, Inc., Tokio/Tokyo | Verfahren und Einrichtung zum Erzeugen eines kombinierten Bildsignals |
GB2164520A (en) * | 1984-09-14 | 1986-03-19 | Philips Electronic Associated | Television special effects generator |
US4680622A (en) * | 1985-02-11 | 1987-07-14 | Ncr Corporation | Apparatus and method for mixing video signals for simultaneous presentation |
US4827344A (en) * | 1985-02-28 | 1989-05-02 | Intel Corporation | Apparatus for inserting part of one video image into another video image |
IT1188385B (it) * | 1985-02-28 | 1988-01-07 | Rca Corp | Apparato e metodo per la sovrapposizione di immagini video |
DE3810328A1 (de) * | 1988-03-26 | 1989-10-05 | Bosch Gmbh Robert | Verfahren und schaltung zur kombination zweier fernsehbildsignale |
GB8822163D0 (en) * | 1988-09-21 | 1988-10-26 | Abekas Video Systems | Video signal processing |
GB8822161D0 (en) * | 1988-09-21 | 1988-10-26 | Abekas Video Systems | Video signal processing |
US4996116A (en) * | 1989-12-21 | 1991-02-26 | General Electric Company | Enhanced direct bond structure |
JPH05130502A (ja) * | 1991-11-08 | 1993-05-25 | Pioneer Electron Corp | 画像再生装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3986204A (en) * | 1975-02-06 | 1976-10-12 | Thomson-Csf Laboratories, Inc. | Video synchronizing apparatus and method |
US3941925A (en) * | 1975-03-10 | 1976-03-02 | Sarkes Tarzian, Inc. | Digital soft edge video transition system |
US4122490A (en) * | 1976-11-09 | 1978-10-24 | Lish Charles A | Digital chroma-key circuitry |
JPS53144622A (en) * | 1977-05-24 | 1978-12-16 | Sony Corp | Video signal processing system |
-
1979
- 1979-04-25 NL NL7903241A patent/NL7903241A/nl not_active Application Discontinuation
-
1980
- 1980-04-07 US US06/137,867 patent/US4356512A/en not_active Expired - Lifetime
- 1980-04-17 CA CA000350077A patent/CA1157936A/fr not_active Expired
- 1980-04-18 FR FR8008778A patent/FR2455410A1/fr active Granted
- 1980-04-22 JP JP5244880A patent/JPS55143876A/ja active Granted
- 1980-04-22 GB GB8013226A patent/GB2048612B/en not_active Expired
- 1980-04-23 DE DE19803015541 patent/DE3015541A1/de active Granted
Also Published As
Publication number | Publication date |
---|---|
CA1157936A (fr) | 1983-11-29 |
FR2455410B1 (fr) | 1983-02-25 |
DE3015541A1 (de) | 1980-11-06 |
JPS6341468B2 (fr) | 1988-08-17 |
GB2048612B (en) | 1983-07-20 |
DE3015541C2 (fr) | 1988-01-14 |
NL7903241A (nl) | 1980-10-28 |
US4356512A (en) | 1982-10-26 |
JPS55143876A (en) | 1980-11-10 |
GB2048612A (en) | 1980-12-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |