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(11)

EP 4 437 727 A1

(12)

(43) Date of publication: 02.10.2024 Bulletin 2024/40 (21) Application number: 22899243.4 (22) Date of filing: 31.05.2022

(51) International Patent Classification (IPC):  H04N 19/52(2014.01) H04N 19/139(2014.01) H04N 19/119(2014.01) (52) Cooperative Patent Classification (CPC): H04N 19/119; H04N 19/52; H04N 19/176; H04N 19/70 (86) International application number: PCT/US2022/031588 (87) International publication number: WO 2023/096668 (01.06.2023 Gazette 2023/22)

(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: 23.11.2021 US 202163282549 P 25.05.2022 US 202217824248 (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)