FR2365256A1 - Procede et dispositif de retrecissement des fenetres temporelles du signal de commande d'un systeme d'incrustation electronique en television en couleurs - Google Patents

Procede et dispositif de retrecissement des fenetres temporelles du signal de commande d'un systeme d'incrustation electronique en television en couleurs

Info

Publication number
FR2365256A1
FR2365256A1 FR7628098A FR7628098A FR2365256A1 FR 2365256 A1 FR2365256 A1 FR 2365256A1 FR 7628098 A FR7628098 A FR 7628098A FR 7628098 A FR7628098 A FR 7628098A FR 2365256 A1 FR2365256 A1 FR 2365256A1
Authority
FR
France
Prior art keywords
colour
intensity level
produce composite
signal
component intensity
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
Application number
FR7628098A
Other languages
English (en)
Other versions
FR2365256B1 (fr
Inventor
Guy Macheboeuf
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.)
Telediffusion de France ets Public de Diffusion
Original Assignee
Telediffusion de France ets Public de Diffusion
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 Telediffusion de France ets Public de Diffusion filed Critical Telediffusion de France ets Public de Diffusion
Priority to FR7628098A priority Critical patent/FR2365256A1/fr
Publication of FR2365256A1 publication Critical patent/FR2365256A1/fr
Application granted granted Critical
Publication of FR2365256B1 publication Critical patent/FR2365256B1/fr
Granted legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

a. Rétrécissement des fenêtres temporelles du signal de commande d'un système d'incrustation électronique en télévision en couleurs, selon lequel les fenêtres temporelles correspondent au découpage d'une image p sur une image f à incruster dans une image d. b. A chaque ligne d'analyse de durée H, le front avant de chaque fenêtre temporelle est rétréci, ou bien le signal de commande est retardé d'une durée t égale à la zone d'effet de bordure d'un côté entre l'image f et l'image p, puis le signal de commande de ladite ligne d'analyse est multiplié par le signal de commande de la ligne d'analyse précédant ladite ligne d'analyse retardé d'une durée H-t, le signal de commande rétréci résultant de la multiplication commandant les commutateurs du système d'incrustation électronique qui reçoivent directement les signaux composants colorimétriques de l'image composite constituée par les images p et f et par l'image d. c. Incrustation en telévision en couleurs.
FR7628098A 1976-09-17 1976-09-17 Procede et dispositif de retrecissement des fenetres temporelles du signal de commande d'un systeme d'incrustation electronique en television en couleurs Granted FR2365256A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7628098A FR2365256A1 (fr) 1976-09-17 1976-09-17 Procede et dispositif de retrecissement des fenetres temporelles du signal de commande d'un systeme d'incrustation electronique en television en couleurs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7628098A FR2365256A1 (fr) 1976-09-17 1976-09-17 Procede et dispositif de retrecissement des fenetres temporelles du signal de commande d'un systeme d'incrustation electronique en television en couleurs

Publications (2)

Publication Number Publication Date
FR2365256A1 true FR2365256A1 (fr) 1978-04-14
FR2365256B1 FR2365256B1 (fr) 1979-01-12

Family

ID=9177810

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7628098A Granted FR2365256A1 (fr) 1976-09-17 1976-09-17 Procede et dispositif de retrecissement des fenetres temporelles du signal de commande d'un systeme d'incrustation electronique en television en couleurs

Country Status (1)

Country Link
FR (1) FR2365256A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4249200A (en) * 1978-07-07 1981-02-03 U.S. Philips Corporation Color selection circuit for color television
US4319266A (en) * 1979-09-04 1982-03-09 The Grass Valley Group, Inc. Chroma keying system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4249200A (en) * 1978-07-07 1981-02-03 U.S. Philips Corporation Color selection circuit for color television
US4319266A (en) * 1979-09-04 1982-03-09 The Grass Valley Group, Inc. Chroma keying system

Also Published As

Publication number Publication date
FR2365256B1 (fr) 1979-01-12

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Legal Events

Date Code Title Description
ST Notification of lapse