(19)

(11)

EP 3 794 830 A1

(12)

(43) Date of publication: 24.03.2021 Bulletin 2021/12 (21) Application number: 19817551.5 (22) Date of filing: 19.11.2019

(51) International Patent Classification (IPC):  H04N 21/422(2011.01) H04N 21/442(2011.01) H04N 21/4223(2011.01) H04N 21/454(2011.01) (86) International application number: PCT/US2019/062272 (87) International publication number: WO 2020/106759 (28.05.2020 Gazette 2020/22)

(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: 21.11.2018 US 201816197822 21.11.2018 US 201816197856 21.11.2018 US 201816197837 (71) Applicant: Rovi Guides, Inc. San Jose, CA 95002 (US)	(72) Inventors: TANG, Yunbo Malvern, PA 19355 (US) SUN, Jing King of Prussia, PA 19406 (US) (74) Representative: Haley Guiliano International LLP  26-28 Bedford Row London WC1R 4HE London WC1R 4HE (GB)