(19)

(11)

EP 4 573 751 A1

(12)

(43) Date of publication: 25.06.2025 Bulletin 2025/26 (21) Application number: 23855543.7 (22) Date of filing: 21.08.2023

(51) International Patent Classification (IPC):  H04N 19/117(2014.01) H04N 19/52(2014.01) H04N 19/176(2014.01) H04N 19/82(2014.01) H04N 19/105(2014.01) (52) Cooperative Patent Classification (CPC): H04N 19/105; H04N 19/117; H04N 19/82; H04N 19/176; H04N 19/577 (86) International application number: PCT/US2023/030739 (87) International publication number: WO 2024/039910 (22.02.2024 Gazette 2024/08)

(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: 19.08.2022 US 202263399641 P (71) Applicant: Beijing Dajia Internet Information Technology Co., Ltd. Beijing 100085 (CN)

(72) Inventors: XIU, Xiaoyu San Diego, CA 92122 (US) YAN, Ning San Diego, CA 92122 (US) MA, Changyue San Diego, CA 92122 (US) KUO, Che-Wei San Diego, CA 92122 (US) JHU, Hong-Jheng San Diego, California 92122 (US) CHEN, Wei San Diego, CA 92122 (US) WANG, Xianglin San Diego, California 92122 (US) YU, Bing Beijing 100085 (CN) (74) Representative: von Tietzen und Hennig, Nikolaus  Lorenz Seidler Gossel Rechtsanwälte Patentanwälte Partnerschaft mbB Widenmayerstraße 23 80538 München 80538 München (DE)