(19)

(11)

EP 4 005 205 A1

(12)

(43) Date of publication: 01.06.2022 Bulletin 2022/22 (21) Application number: 20863420.4 (22) Date of filing: 10.09.2020

(51) International Patent Classification (IPC):  H04N 19/169(2014.01) H04N 19/17(2014.01) H04N 19/119(2014.01) (52) Cooperative Patent Classification (CPC): H04N 19/17; H04N 19/119; H04N 19/169; H04N 19/61; H04N 19/46; H04N 19/167; H04N 19/174; H04N 19/176; H04N 19/865; H04N 19/70 (86) International application number: PCT/CN2020/114508 (87) International publication number: WO 2021/047590 (18.03.2021 Gazette 2021/11)

(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: 10.09.2019 US 201962898127 P 11.09.2019 US 201962898620 P 09.09.2020 US 202017016257 (71) Applicant: HFI Innovation Inc. Zhubei City, Hsinchu County 302 (TW)	(72) Inventors: HSU, Chih-Wei Hsinchu City 30078 (TW) CHEN, Lulin San Jose California 95134 (US) HUANG, Yu-Wen Hsinchu City 30078 (TW) (74) Representative: Hoefer & Partner Patentanwälte mbB  Pilgersheimer Straße 20 81543 München 81543 München (DE)