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(11)

EP 4 470 212 A1

(12)

(43) Date of publication: 04.12.2024 Bulletin 2024/49 (21) Application number: 22922464.7 (22) Date of filing: 03.06.2022

(51) International Patent Classification (IPC):  H04N 19/10(2014.01) H04N 19/176(2014.01) H04N 19/513(2014.01) H04N 19/00(2014.01) (52) Cooperative Patent Classification (CPC): H04N 19/523; H04N 19/517; H04N 19/70 (86) International application number: PCT/US2022/032077 (87) International publication number: WO 2023/140884 (27.07.2023 Gazette 2023/30)

(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 MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 24.01.2022 US 202263302518 P 25.05.2022 US 202217824193 (71) Applicant: Tencent America LLC Palo Alto, CA 94306 (US)	(72) Inventors: ZHAO, Liang Palo Alto, California 94306 (US) ZHAO, Xin Palo Alto, California 94306 (US) LIU, Shan Palo Alto, California 94306 (US) (74) Representative: Gunzelmann, Rainer  Wuesthoff & Wuesthoff Patentanwälte und Rechtsanwalt PartG mbB Schweigerstraße 2 81541 München 81541 München (DE)