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1. WO2022126280 - SYSTEM AND METHOD FOR DECIMATION OF IMAGE DATA FOR MULTIVIEWER DISPLAY

Publication Number WO/2022/126280
Publication Date 23.06.2022
International Application No. PCT/CA2021/051838
International Filing Date 17.12.2021
IPC
H04N 5/222 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment
CPC
H04N 21/4312
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
431Generation of visual interfaces ; for content selection or interaction; Content or additional data rendering
4312involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
H04N 21/44004
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
44Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
44004involving video buffer management, e.g. video decoder buffer or video display buffer
Applicants
  • GRASS VALLEY CANADA [CA]/[CA]
Inventors
  • TRUSSART, Vincent
Agents
  • DEN BOEF, Paul
  • JOHNSON, Richard A.
Priority Data
17/644,52915.12.2021US
63/127,05717.12.2020US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEM AND METHOD FOR DECIMATION OF IMAGE DATA FOR MULTIVIEWER DISPLAY
(FR) SYSTÈME ET PROCÉDÉ DE DÉCIMATION DE DONNÉES D'IMAGE POUR AFFICHAGE MULTI-SPECTATEUR
Abstract
(EN) A system is provided for displaying content streams on a multiviewer device and includes a GPU that resizes image data loaded therein for display in a multiviewer tile, and an image decimation controller that performs a decimation of a content stream by removing a predetermined number of lines from each frame of the content stream before loading the content stream to the internal memory of the GPU for resizing and display on the multiviewer tile. In this system, the content stream is loaded to a full resolution buffer in system memory if the content stream is not a proxy stream of the media content and the tile designated for the content stream is less the predetermined threshold, such that the image decimation controller performs the decimation to delete the predetermined number of lines before the content stream is loaded in the internal memory of the GPU as the image data.
(FR) Un système est prévu pour afficher des flux de contenu sur un dispositif multi-spectateur, et comprend une unité centrale graphique GPU qui redimensionne les données d'image chargées dans celui-ci pour un affichage dans un pavé multi-spectateur, et un contrôleur de décimation d'image qui effectue une décimation d'un flux de contenu en éliminant un nombre prédéterminé de lignes dans chaque trame du flux de contenu avant de charger le flux de contenu dans la mémoire interne de la GPU pour un redimensionnement et un affichage sur le pavé multi-spectateur. Dans ce système, le flux de contenu est chargé dans un tampon de résolution complète d'une mémoire système si le flux de contenu n'est pas un flux mandataire du contenu multimédia et le pavé désigné pour le flux de contenu est inférieur au seuil prédéterminé, de telle sorte que le contrôleur de décimation d'image effectue la décimation pour supprimer le nombre prédéterminé de lignes avant que le flux de contenu ne soit chargé dans la mémoire interne de la GPU en tant que données d'image.
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