MEASURING INSTRUMENT, MEASUREMENT METHOD, AND TIME SYNCHRONIZATION SYSTEM

WIPO Patent Application WO/2022/244154

A1

A measuring instrument (30) according to the present disclosure comprises: a UTC acquisition unit (31) that acquires a reference time from a satellite signal; a BC time acquisition unit (32) that acquires time information pertaining to an in-device time of a first device (3); a UTC-BC offset calculation processing unit (33) that calculates, on the basis of the reference time and the time information, a first offset, which is the difference between the reference time and the in-device time of the first device (3); a BC-client offset calculation processing unit (34) that acquires a copy of a packet, and on the basis of the acquired packet and a transmission delay between the first device (3) and a second device (4), calculates a second offset, which is the difference between the in-device time of the first device (3) and an in-device time of the second device (4); and a time accuracy calculation processing unit (35) that measures the accuracy of the in-device time of the second device (4) in relation to the reference time, on the basis of the first offset and the second offset.

JP5402073	The control method of a satellite signal receiving set and a satellite signal receiving set
JP3590550	Digital broadcast receiver

YAMAGATA KEISUKE (JP)
YAZAWA GO (JP)
YOSHIHARA SHINICHI (JP)
NAKANISHI TAKASHI (JP)

PCT/JP2021/019029

November 24, 2022

May 19, 2021

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NIPPON TELEGRAPH & TELEPHONE (JP)

G04G5/00

WO2012114517A1	2012-08-30
WO2019177503A1	2019-09-19

JP2016057169A	2016-04-21
JP2016152489A	2016-08-22
JP2020134203A	2020-08-31
JP2015039131A	2015-02-26
JP2016152488A	2016-08-22
JP2017005701A	2017-01-05
US20170141865A1	2017-05-18
US10158442B1	2018-12-18

SUGIMURA Kenji (JP)

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