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EP 4 544 772 A1

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(43) Date of publication: 30.04.2025 Bulletin 2025/18 (21) Application number: 23827864.2 (22) Date of filing: 23.06.2023

(51) International Patent Classification (IPC):  H04N 19/103(2014.01) H04N 19/186(2014.01) H04N 19/00(2014.01) H04N 19/169(2014.01) H04N 19/50(2014.01) (52) Cooperative Patent Classification (CPC): H04N 19/50; H04N 19/186; H04N 19/103; H04N 19/169; H04N 19/132; H04N 19/117; H04N 19/80 (86) International application number: PCT/US2023/026033 (87) International publication number: WO 2023/250115 (28.12.2023 Gazette 2023/52)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 23.06.2022 US 202263355027 P (71) Applicant: Beijing Dajia Internet Information Technology Co., Ltd. Beijing 100085 (CN)

(72) Inventors: KUO, Che-Wei Beijing 100085 (CN) JHU, Hong-Jheng Beijing 100085 (CN) XIU, Xiaoyu San Diego, California 92122 (US) YAN, Ning Hangzhou, Zhejiang (CN) CHEN, Wei San Diego, California 92122 (US) WANG, Xianglin San Diego, California 92122 (US) YU, Bing Beijing 100085 (CN) (74) Representative: Atout PI Laplace  Immeuble Up On 25 Boulevard Romain Rolland CS 40072 75685 Paris Cedex 14 75685 Paris Cedex 14 (FR)