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EP 4 497 241 A1

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(43) Date of publication: 29.01.2025 Bulletin 2025/05 (21) Application number: 23775583.0 (22) Date of filing: 22.03.2023

(51) International Patent Classification (IPC):  H04N 19/593(2014.01) H04N 19/132(2014.01) H04N 19/82(2014.01) H04N 19/124(2014.01) H04N 19/157(2014.01) H04N 19/105(2014.01) H04N 19/11(2014.01) (52) Cooperative Patent Classification (CPC): H04N 19/593; H04N 19/11; H04N 19/117; H04N 19/176 (86) International application number: PCT/US2023/015869 (87) International publication number: WO 2023/183366 (28.09.2023 Gazette 2023/39)

(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: 22.03.2022 US 202263322478 P 22.11.2022 WO PCT/US2022/050696 (71) Applicant: Beijing Dajia Internet Information Technology Co., Ltd. Beijing 100085 (CN)

(72) Inventors: YAN, Ning San Diego, CA 92122 (US) CHEN, Yi-Wen San Diego, CA 92122 (US) XIU, Xiaoyu San Diego, CA 92122 (US) CHEN, Wei San Diego, CA 92122 (US) KUO, Che-Wei San Diego, CA 92122 (US) JHU, Hong-Jheng San Diego, CA 92122 (US) GAO, Han San Diego, CA 92122 (US) YU, Bing Beijing 100085 (CN) WANG, Xianglin San Diego, CA 92122 (US) (74) Representative: Michalski Hüttermann & Partner Patentanwälte mbB  Kaistraße 16A 40221 Düsseldorf 40221 Düsseldorf (DE)