Title:
SLAVE APPARATUS, TIME SYNCHRONIZATION PROGRAM, EMBEDDED SYSTEM, AND TIME SYNCHRONIZATION METHOD
Document Type and Number:
WIPO Patent Application WO/2020/183572
Kind Code:
A1
Abstract:
According to the present invention, a slave node (300) is a slave apparatus which operates according to a control frame transmitted from a master node (200). The slave node calculates a control frame statistic which is a statistic of one or more control frames transmitted from a master apparatus, and estimates a master environment value on the basis of the calculated control frame statistic. The slave node measures a slave environment value. The slave node estimates a frequency deviation of a master clock on the basis of the estimated master environment value, and estimates a frequency deviation of a slave clock on the basis of the measured slave environment value. The slave node corrects the clock value of the slave clock on the basis of the difference between the frequency deviation of the master clock and the frequency deviation of the slave clock.
Inventors:
IDEHARA AKIO (JP)
MOTAI HIROTAKA (JP)
TERADA YURIKA (JP)
KAJI BAMPEI (JP)
OTANI TOSHIYUKI (JP)
MOTAI HIROTAKA (JP)
TERADA YURIKA (JP)
KAJI BAMPEI (JP)
OTANI TOSHIYUKI (JP)
Application Number:
PCT/JP2019/009695
Publication Date:
September 17, 2020
Filing Date:
March 11, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G04G3/00; G04G7/00
Foreign References:
| JP2015004649A | 2015-01-08 | |||
| JP2018155679A | 2018-10-04 | |||
| JP2015068806A | 2015-04-13 | |||
| JP2013092515A | 2013-05-16 | |||
| JP2018013460A | 2018-01-25 |
Attorney, Agent or Firm:
MIZOI INTERNATIONAL PATENT FIRM (JP)
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