ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,407,892, issued on Sept. 2, was assigned to AD CONNECTED INC. (Seoul, South Korea).

"Method of synchronizing playback of digital content between plurality of connected devices and device using the same" was invented by Inje Cho (Seoul, South Korea) and Daehee Lee (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a method of synchronizing playback of a digital content between connected devices, the method including: 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 pla...