Communication system, communication device, communication method, control circuit, and storage medium
US12140993B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2023 |
| Grant date | Nov 12, 2024 |
| Priority date | — |
| Expiry date | May 31, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A communication system includes a master device, a slave device, and a relay device. The relay device includes a time synchronization management unit that stores retention time of a first time-synchronization frame sent from the master device, adds the first-time-synchronization-frame retention time to a correction field when a second time-synchronization frame sent from the master device is relayed, stores retention time of a third time-synchronization frame sent from the slave device, and adds the third-time-synchronization-frame retention time to a correction field when a fourth time-synchronization frame sent from the master device is relayed. The slave device includes a transmission delay time aggregation unit storing a value in the correction field of the second time-synchronization frame and characteristic information about priority in a frame in association with each other, and storing a value in the correction field of the fourth time-synchronization frame and the characteristic information in association with each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.