Patent 11876609 was granted and assigned to Nippon Telegraph and Telephone on January, 2024 by the United States Patent and Trademark Office.
A time synchronization device focuses on a possibility of multiplexing a plurality of PTP domains on a transmission line with the same PTP and derives one time based on time information from a plurality of PTP domains. The time synchronization device includes PTP slave units belonging to corresponding PTP domains different from each other and configured to synchronize with times of the corresponding PTP domains, and a time integration unit