Time synchronization device, time synchronization system, and recording medium

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12224851
APP PUB NO 20230179312A1
SERIAL NO

17924116

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A first slave device (300) is connected between a master device (200) retaining a reference time and a second slave device (400) and executes time synchronization with the master device (200) in accordance with the PTP, together with the second slave device (400). A first synchronization information transmitter (332) transmits Sync and Follow_Up messages to the second slave device (400), a first request information receiver (313) receives a Delay_Req message from the second slave device (400), and a first response information transmitter (333) transmits a Delay_Resp message to the second slave device (400). A first time corrector (320) executes time correction based on a propagation delay time relative to the master device (200), calculated from times identified through transmission and reception of messages to and from the master device (200), during a period different from the period from transmission of the Sync message until reception of the Delay_Req message.

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Patent Owner(s)

  • MITSUBISHI ELECTRIC CORPORATION

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ichimura, Takashi Tokyo, JP 30 198
Li, Lei Tokyo, JP 645 4033

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