US 12,407,892 B2
Method of synchronizing playback of digital content between plurality of connected devices and device using the same
Inje Cho, Seoul (KR); and Daehee Lee, Seoul (KR)
Assigned to AD CONNECTED, INC., Seoul (KR)
Appl. No. 18/548,020
Filed by AD CONNECTED, INC., Seoul (KR)
PCT Filed Feb. 26, 2021, PCT No. PCT/KR2021/002503
§ 371(c)(1), (2) Date Aug. 25, 2023,
PCT Pub. No. WO2022/181859, PCT Pub. Date Sep. 1, 2022.
Prior Publication US 2024/0298059 A1, Sep. 5, 2024
Int. Cl. H04N 21/8547 (2011.01); H04N 21/43 (2011.01)
CPC H04N 21/43076 (2020.08) [H04N 21/8547 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of synchronizing playback of a digital content between connected devices, the method comprising:
receiving a playback delay time list or a playback sync timestamp from a master device during a playback duty cycle;
calculating a playback delay time correction amount by referring to the playback delay time list in order to synchronize playback between a plurality of connected devices including the master device;
correcting a playback sync timestamp used in the playback synchronization according to the playback delay time correction amount; and
playing a digital content according to the corrected playback sync timestamp.