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EP 4 537 523 A1

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(43) Date of publication: 16.04.2025 Bulletin 2025/16 (21) Application number: 23735516.9 (22) Date of filing: 02.06.2023

(51) International Patent Classification (IPC):  H04N 7/15(2006.01) G06V 30/10(2022.01) G06F 16/783(2019.01) G06V 20/62(2022.01) H04N 21/44(2011.01) H04N 21/81(2011.01) (52) Cooperative Patent Classification (CPC): H04N 21/23418; H04N 21/44008; H04N 7/152; G06F 16/7844; H04N 21/8153; H04M 3/567; H04L 12/1831; G06V 20/62; G06V 10/82 (86) International application number: PCT/US2023/024304 (87) International publication number: WO 2023/235576 (07.12.2023 Gazette 2023/49)

(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: 04.06.2022 US 202217832635 04.06.2022 US 202217832636 04.06.2022 US 202217832637 04.06.2022 US 202217832640 (71) Applicant: Zoom Video Communications, Inc. San Jose, CA 95113 (US)

(72) Inventors: TAO, Renjie San Jose, California 95113 (US) TSOU, Ling San Jose, California 95113 (US) (74) Representative: Keltie LLP  No. 1 London Bridge London SE1 9BA London SE1 9BA (GB)