Time synchronization device, and method and program therefor

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United States of America Patent

PATENT NO 11150353
APP PUB NO 20170350984A1
SERIAL NO

15543333

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A time synchronization method that is capable of selecting whether synchronization, by a timepiece unit that generates a time signal synchronized with a standard time and outputs it to an exterior, with the time is performed by time information obtained by receiving a radio wave including information relating to the time, or is performed by means of a holdover performed using a clock signal from an internal or external clock source. A schedule having a first time period in which the above-mentioned time information is used, and a second time period by means of the holdover is determined according to temporal reception characteristics of the radio wave at a reception location of the radio wave, and according to the schedule, supplying the timepiece unit with the time information or supplying the timepiece unit with the clock signal from the internal or external clock source.

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Patent Owner(s)

  • NEC CORPORATION AND NIPPON TELEGRAPH AND TELEPHONE CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukada, Youichi Tokyo, JP 7 74
Hirose, Takashi Tokyo, JP 99 1147
Morita, Akihiro Tokyo, JP 35 140
Nishi, Keisuke Tokyo, JP 8 31
Yoshida, Seiji Tokyo, JP 36 266

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