{"id":17670,"date":"2025-12-06T07:37:50","date_gmt":"2025-12-06T07:37:50","guid":{"rendered":"https:\/\/cob-leddisplay.com\/?p=17670"},"modified":"2025-12-11T06:33:04","modified_gmt":"2025-12-11T06:33:04","slug":"the-difference-and-function-of-1920hz-and-3840hz-led-video-wall","status":"publish","type":"post","link":"https:\/\/cob-leddisplay.com\/fr\/the-difference-and-function-of-1920hz-and-3840hz-led-video-wall\/","title":{"rendered":"Diff\u00e9rence et fonction des murs vid\u00e9o LED 1920 Hz et 3840 Hz"},"content":{"rendered":"

1) Pour les \u00e9crans muraux vid\u00e9o LED 1920 Hz\u00a0:<\/em><\/span><\/h4>\n

\u2460 L'affichage est g\u00e9n\u00e9ralement fluide, mais un l\u00e9ger effet de r\u00e9manence ou de flou peut se produire lors de l'affichage de sc\u00e8nes en mouvement rapide.<\/em><\/p>\n

\u2461Lorsqu'on prend des photos avec un t\u00e9l\u00e9phone portable ou un cam\u00e9scope, des ondulations d'eau, des motifs moir\u00e9s et des rayures scintillantes sont plus susceptibles d'appara\u00eetre.<\/em><\/p>\n

\u2462Bien que le niveau de confort visuel soit suffisant pour les besoins de vision quotidiens, une vision prolong\u00e9e ou une exposition \u00e0 des images changeant rapidement peuvent plus facilement provoquer une fatigue oculaire.<\/em><\/p>\n

\u2463Le principe technique utilise g\u00e9n\u00e9ralement un circuit int\u00e9gr\u00e9 de commande de verrouillage double, qui est relativement peu co\u00fbteux et offre un rapport co\u00fbt-efficacit\u00e9 \u00e9lev\u00e9.<\/em><\/p>\n

\u2464 Principaux sc\u00e9narios d'application : occasions d'affichage g\u00e9n\u00e9rales telles que les r\u00e9unions int\u00e9rieures r\u00e9guli\u00e8res, la diffusion d'informations, les salles de classe et les centres commerciaux, o\u00f9 il n'y a pas d'exigences particuli\u00e8res pour la prise de vue.<\/em><\/p>\n

2) Pour les \u00e9crans muraux vid\u00e9o LED 3840 Hz\u00a0:<\/em><\/span><\/h4>\n

\u2460 L'effet d'affichage est plus stable, plus clair et plus fluide dans les sc\u00e8nes dynamiques, capturant avec pr\u00e9cision les d\u00e9tails des objets en mouvement rapide.<\/em><\/p>\n

\u2461 L'effet de prise de vue \u00e9vite efficacement les ondulations et les scintillements de l'eau pendant la prise de vue, ce qui donne des images plus nettes et plus claires.<\/em><\/p>\n

\u2462 Un taux de rafra\u00eechissement plus \u00e9lev\u00e9 contribue \u00e0 r\u00e9duire la fatigue oculaire lors d'un visionnage prolong\u00e9, rendant ainsi le visionnage plus confortable.<\/em><\/p>\n

\u2463Le principe technique n\u00e9cessite l'utilisation d'un circuit int\u00e9gr\u00e9 de commande PWM haute d\u00e9finition et d'ordre \u00e9lev\u00e9, tel que la solution FT7780, qui est nettement plus cher en raison de sa complexit\u00e9.<\/em><\/p>\n

\u2464 Principaux sc\u00e9narios d'application : spectacles sc\u00e9niques, retransmissions sportives, publicit\u00e9 commerciale haut de gamme, tournage virtuel XR et occasions n\u00e9cessitant un tournage avec un \u00e9quipement professionnel.<\/em><\/p>\n

3) Caract\u00e9ristiques des \u00e9crans muraux vid\u00e9o LED 1920 Hz\u00a0:<\/span><\/em><\/h4>\n

\u2460 Sa fluidit\u00e9 surpasse de loin les taux de rafra\u00eechissement conventionnels ant\u00e9rieurs, tels que 960 Hz et inf\u00e9rieurs \u00e0 1920 Hz, pour l'\u0153il humain, le visionnage de la plupart des contenus dynamiques, tels que les vid\u00e9os et les animations PPT, est d\u00e9j\u00e0 tr\u00e8s fluide.<\/em><\/p>\n

\u2461 Sans utiliser de cam\u00e9ra pour capturer les images, le spectateur moyen n\u2019aurait pratiquement aucun moyen de percevoir la diff\u00e9rence de fluidit\u00e9 par rapport \u00e0 des taux de rafra\u00eechissement plus \u00e9lev\u00e9s, tels que 3840 Hz.<\/em><\/p>\n

\u2462Gr\u00e2ce \u00e0 une technologie \u00e9prouv\u00e9e et \u00e0 une cha\u00eene industrielle compl\u00e8te, il s'agit actuellement du choix le plus courant et le plus rentable sur le march\u00e9, il atteint le meilleur \u00e9quilibre entre la satisfaction des exigences d'affichage de base et la ma\u00eetrise du budget.<\/em><\/p>\n

\u2463 Convient \u00e0 la plupart des occasions ne n\u00e9cessitant pas de photographie professionnelle, telles que : salles de conf\u00e9rence int\u00e9rieures, salles de classe, \u00e9crans d'information des centres commerciaux, la plupart des \u00e9crans publicitaires ext\u00e9rieurs, centres de surveillance de donn\u00e9es, etc.<\/em><\/p>\n

\u2464 Sa principale caract\u00e9ristique, qui est aussi sa limite, est son incapacit\u00e9 \u00e0 g\u00e9rer parfaitement tous les appareils photo. Avec les obturateurs \u00e9lectroniques des t\u00e9l\u00e9phones portables et des cam\u00e9scopes, elle a tendance \u00e0 produire des lignes de balayage ondul\u00e9es et des scintillements, la rendant inadapt\u00e9e aux situations n\u00e9cessitant un enregistrement ou une diffusion en direct.<\/em><\/p>\n

\"\"<\/p>\n

4) Caract\u00e9ristiques des \u00e9crans muraux vid\u00e9o LED 3840 Hz\u00a0:<\/span><\/em><\/h4>\n

\u2460C'est sa caract\u00e9ristique la plus remarquable et irrempla\u00e7able : elle permet d'\u00e9liminer presque compl\u00e8tement les ondulations et les scintillements de l'eau sous les diff\u00e9rentes vitesses d'obturation des appareils photo et des t\u00e9l\u00e9phones portables, garantissant ainsi des images nettes et stables. C'est pourquoi les cha\u00eenes de t\u00e9l\u00e9vision, les productions cin\u00e9matographiques et t\u00e9l\u00e9visuelles, ainsi que les diffusions en direct \u00e0 grande \u00e9chelle doivent adopter cette norme.<\/em><\/p>\n

\u2461 L'obtention d'un taux de rafra\u00eechissement \u00e9lev\u00e9 de 3840 Hz ne se r\u00e9sume pas \u00e0 l'augmentation des param\u00e8tres ; elle repose sur des circuits int\u00e9gr\u00e9s de pilotage PWM haut de gamme, tels que les s\u00e9ries Macroblock MBI et Chipone ICND, et sur des algorithmes de balayage plus complexes, repr\u00e9sentant un niveau de technologie et de stabilit\u00e9 sup\u00e9rieur.<\/em><\/p>\n

\u2462 Alors que l'\u0153il humain ne per\u00e7oit qu'une am\u00e9lioration limit\u00e9e de la fluidit\u00e9 au-del\u00e0 de 1920 Hz, 3840 Hz offre th\u00e9oriquement des contours d'image plus stables et plus nets et r\u00e9duit les effets de r\u00e9manence extr\u00eamement subtils lors de l'affichage de sc\u00e8nes en mouvement tr\u00e8s rapide, telles que les ralentis de voitures de course ou de jeux sportifs.<\/em><\/p>\n

\u2463En raison de ses co\u00fbts technologiques et de son positionnement principal en tant que service de prise de vue, il est principalement utilis\u00e9 dans des sc\u00e9narios haut de gamme avec des besoins de prise de vue rigides ou des budgets suffisants, tels que les studios de diffusion et de t\u00e9l\u00e9vision, les d\u00e9cors de sc\u00e8ne de concerts ou de galas, les \u00e9crans principaux d'\u00e9v\u00e9nements e-sports, les lancements de marques haut de gamme et les studios de prise de vue XR virtuels.<\/em><\/p>\n

5) Comment choisir un \u00e9cran mural vid\u00e9o LED 1920 Hz ou 3840 Hz en fonction du contexte du lieu\u00a0:<\/em><\/span><\/h4>\n

\u2460Choisir 1920 Hz si votre \u00e9cran est principalement utilis\u00e9 pour la visualisation humaine et ne sera pas fr\u00e9quemment photographi\u00e9, comme dans les salles de conf\u00e9rence d'entreprise, les salles d'exposition, les \u00e9crans d'information des centres commerciaux et la plupart des \u00e9crans publicitaires int\u00e9rieurs et ext\u00e9rieurs, 1920 Hz est un choix parfaitement ad\u00e9quat et rentable.<\/em><\/p>\n

\u2461 Choisissez 3840 Hz si votre \u00e9cran sera utilis\u00e9 pour le tournage ou la diffusion en direct par des t\u00e9l\u00e9phones portables, des appareils photo ou d'autres appareils, ou si vous avez des exigences extr\u00eamement \u00e9lev\u00e9es en mati\u00e8re de qualit\u00e9 d'image dynamique, comme dans les studios de t\u00e9l\u00e9vision, les concerts, les \u00e9v\u00e9nements e-sport ou les lancements de produits haut de gamme, vous devez alors choisir un produit avec un taux de rafra\u00eechissement de 3840 Hz ou plus pour \u00e9viter les ondulations et garantir la qualit\u00e9 de prise de vue.<\/em><\/p>\n

\"\"<\/p>","protected":false},"excerpt":{"rendered":"

1) Pour les murs d'images LED 1920 Hz\u00a0: \u2460 L'affichage est g\u00e9n\u00e9ralement fluide, mais de l\u00e9gers effets de r\u00e9manence ou de flou peuvent appara\u00eetre lors de sc\u00e8nes rapides. \u2461 Lors de la prise de vue avec un t\u00e9l\u00e9phone portable ou un cam\u00e9scope, des ondulations, des effets de moir\u00e9 et des scintillements sont plus susceptibles d'appara\u00eetre. \u2462 Bien que le confort visuel soit suffisant pour un usage quotidien, [\u2026]<\/p>","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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