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EP 4 824 703 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24824651.4 (22) Date of filing: 25.11.2024

(51) International Patent Classification (IPC):  G06F 40/35(2020.01) G10L 13/00(2006.01) (52) Cooperative Patent Classification (CPC): G06F 40/35; G10L 13/00; G10L 15/22 (86) International application number: PCT/US2024/057256 (87) International publication number: WO 2025/128316 (19.06.2025 Gazette 2025/25)

(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: GE KH MA MD TN (30) Priority: 14.12.2023 US 202318540283 (71) Applicant: Amazon Technologies, Inc. Seattle, WA 98108-1226 (US)

(72) Inventors: LIU, Xiaohu Seattle, Washington 98109-5210 (US) GUO, Chenlei Seattle, Washington 98109-5210 (US) KUMAR, Bharath Bhimanaik Seattle, Washington 98109-5210 (US) SHEN, Wei Seattle, Washington 98109-5210 (US) ZHANG, Yu Seattle, Washington 98109-5210 (US) SARIKAYA, Ruhi Seattle, Washington 98109-5210 (US) (74) Representative: Beck Greener LLP  Fulwood House 12 Fulwood Place London WC1V 6HR London WC1V 6HR (GB)