Master control device and synchronous communication system using same
US10756879B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2018 |
| Grant date | Aug 25, 2020 |
| Priority date | — |
| Expiry date | Sep 5, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L43/0858
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A master control device connected to a plurality of slave control devices via a network is configured to include an own local time counted by a counter unit, in a message and transmit the message to the slave control devices by the timing synchronization unit, calculate a difference between a reception time of a message transmitted from the slave control device, which has received the message, at a timing corrected in accordance with the local time and a pre-calculated message reception predicted time by a timing synchronization determination unit, calculate a correction amount for timing of the slave control devices using the difference by a timing synchronization correction unit, add the correction amount to the local time, include the local time in a message, and transmit the message to the slave control devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.