WO1991004636A3 - Ameliorations apportees a des convertisseurs de signaux video adaptables au mouvement - Google Patents

Ameliorations apportees a des convertisseurs de signaux video adaptables au mouvement Download PDF

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Publication number
WO1991004636A3
WO1991004636A3 PCT/GB1990/001405 GB9001405W WO9104636A3 WO 1991004636 A3 WO1991004636 A3 WO 1991004636A3 GB 9001405 W GB9001405 W GB 9001405W WO 9104636 A3 WO9104636 A3 WO 9104636A3
Authority
WO
WIPO (PCT)
Prior art keywords
motion
signal
difference
video signal
adaptive video
Prior art date
Application number
PCT/GB1990/001405
Other languages
English (en)
Other versions
WO1991004636A2 (fr
Inventor
Jonathan George William Pledge
Jeffrey John Gledhill
Peter Anthony Avon
Original Assignee
Indep Broadcasting Authority
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 Indep Broadcasting Authority filed Critical Indep Broadcasting Authority
Publication of WO1991004636A2 publication Critical patent/WO1991004636A2/fr
Publication of WO1991004636A3 publication Critical patent/WO1991004636A3/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0117—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal
    • H04N7/012—Conversion between an interlaced and a progressive signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Graphics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)

Abstract

Une méthode et un appareil de conversion de signaux vidéo prévoient de minimiser les retards de champ en utilisant une interpolation dans l'espace lorsqu'il y a mouvement dans l'image et, en cas d'absence de mouvement dans une zone donnée de l'image, en répétant une partie du signal précédent représentant le même emplacement spatial dans l'image. Pour évaluer le mouvement, on calcule le signal d'entrée moyen sur un bloc de pixels N x M et on relève la différence de trame de ce signal. Ce signal de différence de trame peut être dispersé par filtrage dans le temps de manière à éviter le problème de la barre de défilement. On peut encore obtenir d'autres améliorations en faisant la somme et la différence d'échantillons successifs du signal d'entrée, en soumettant cette somme au traitement d'adaptation au mouvement décrit ci-dessus, en appliquant une interpolation spatiale au signal de différence, et en recombinant les signaux ainsi traités.
PCT/GB1990/001405 1989-09-11 1990-09-11 Ameliorations apportees a des convertisseurs de signaux video adaptables au mouvement WO1991004636A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8920490.3 1989-09-11
GB8920490A GB8920490D0 (en) 1989-09-11 1989-09-11 Improvements in or relating to adaptive video signal converters

Publications (2)

Publication Number Publication Date
WO1991004636A2 WO1991004636A2 (fr) 1991-04-04
WO1991004636A3 true WO1991004636A3 (fr) 1991-06-27

Family

ID=10662871

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1990/001405 WO1991004636A2 (fr) 1989-09-11 1990-09-11 Ameliorations apportees a des convertisseurs de signaux video adaptables au mouvement

Country Status (2)

Country Link
GB (1) GB8920490D0 (fr)
WO (1) WO1991004636A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5166788A (en) * 1990-06-29 1992-11-24 Samsung Electronics Co., Ltd. Motion signal processor
GB9312022D0 (en) * 1993-06-10 1993-07-28 Snell & Wilcox Ltd Video signal processing
CA2138834C (fr) * 1994-01-07 2004-10-19 Robert J. Gove Systeme d'affichage video a desentrelacement numerique
US5519451A (en) * 1994-04-14 1996-05-21 Texas Instruments Incorporated Motion adaptive scan-rate conversion using directional edge interpolation
CN1333372C (zh) * 2006-03-30 2007-08-22 北京中星微电子有限公司 一种数字信号的重采样方法
CN100389591C (zh) * 2006-04-13 2008-05-21 北京中星微电子有限公司 一种对二维数字信号进行缩放的方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2949505A (en) * 1957-08-14 1960-08-16 Bell Telephone Labor Inc Reduced bandwith transmission system
EP0018856A1 (fr) * 1979-05-08 1980-11-12 British Broadcasting Corporation Système de visualisation de télévision
EP0076542A1 (fr) * 1981-10-06 1983-04-13 Koninklijke Philips Electronics N.V. Circuit convertisseur de standard de lignes pour un signal de télévision
GB2146868A (en) * 1983-09-17 1985-04-24 Emi Ltd Television receiver
USRE32358E (en) * 1981-09-08 1987-02-17 Rca Corporation Television display system with reduced line-scan artifacts
US4673978A (en) * 1986-05-23 1987-06-16 Rca Corporation Progressive scan processor with plural frequency band interpolation
US4698675A (en) * 1986-09-29 1987-10-06 Rca Corporation Progressive scan display system having intra-field and inter-field processing modes
US4768092A (en) * 1986-07-23 1988-08-30 Canon Kabushiki Kaisha Image signal conversion device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2949505A (en) * 1957-08-14 1960-08-16 Bell Telephone Labor Inc Reduced bandwith transmission system
EP0018856A1 (fr) * 1979-05-08 1980-11-12 British Broadcasting Corporation Système de visualisation de télévision
USRE32358E (en) * 1981-09-08 1987-02-17 Rca Corporation Television display system with reduced line-scan artifacts
EP0076542A1 (fr) * 1981-10-06 1983-04-13 Koninklijke Philips Electronics N.V. Circuit convertisseur de standard de lignes pour un signal de télévision
GB2146868A (en) * 1983-09-17 1985-04-24 Emi Ltd Television receiver
US4673978A (en) * 1986-05-23 1987-06-16 Rca Corporation Progressive scan processor with plural frequency band interpolation
US4768092A (en) * 1986-07-23 1988-08-30 Canon Kabushiki Kaisha Image signal conversion device
US4698675A (en) * 1986-09-29 1987-10-06 Rca Corporation Progressive scan display system having intra-field and inter-field processing modes

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
16th International TV Symposium, Montreux, 17-22 June 1989, Broadcast Sessions, G. Barbieri et al.: "A modular and flexible video codec architecture for application to TV and HDTV", pages 410-420 *
Proceedings of Digital Processing of Signals in Communications, April 1985 B. Flannaghan: "A motion detector for television applications", pages 2-6 *
Telefunken Zeitung, vol. 49, no. 4/5, 15 October 1976, F. May: "Bitratenreduktion für Grauton-Bildsignale mit Bandaufspaltung und adaptiver Codierung des Höhenkanals", pages 159-169 *

Also Published As

Publication number Publication date
WO1991004636A2 (fr) 1991-04-04
GB8920490D0 (en) 1989-10-25

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