TIME CORRECTION DEVICE, TIME CORRECTION METHOD, AND TIME CORRECTION PROGRAM

WIPO Patent Application WO/2021/240783

A1

A frequency-deviation rate-of-change calculation unit (204) calculates a frequency deviation rate of change that is the rate of change per unit of time of the frequency deviation between the clock frequency of a synchronization reference device that is to serve as a reference for time synchronization and the clock frequency of a time synchronization device that is to have the time thereof synchronized with that of the synchronization reference device. A time correction amount calculation unit (205) calculates a first correction amount corresponding to a fixed frequency deviation between the clock frequency of the synchronization reference device and the clock frequency of the time synchronization device, calculates a second correction amount corresponding to the change over time of the frequency deviation between the clock frequency of the synchronization reference device and the clock frequency of the time synchronization device by integrating, over time, the rate of change of the frequency deviation, and uses the first correction amount and second correction amount to calculate a time correction amount for correcting the time of the time synchronization device. A time correction unit (206) uses the time correction amount to correct the time of the time synchronization device.

SAKAUE TAICHI (JP)

PCT/JP2020/021347

December 02, 2021

May 29, 2020

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MITSUBISHI ELECTRIC CORP (JP)

G04G5/00

JP2017069669A	2017-04-06
JP2015111059A	2015-06-18
JPH08240671A	1996-09-17
JP6351889B1	2018-07-04

MIZOI INTERNATIONAL PATENT FIRM (JP)

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