Method, device, and computer program for improving synchronization of clocks in devices linked according to a daisy-chain topology

A method for synchronizing a logical clock in a device comprising a physical clock, an input port, and an output port, the device further comprising a logical clock and a time compensation clock sharing the physical clock, the time compensation clock making it possible to determine a residence time,...

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Bibliographische Detailangaben
Hauptverfasser: Le Scolan, Lionel, El Kolli, Yacine, Guignard, Romain, Closset, Arnaud
Format: Patent
Sprache:eng
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Zusammenfassung:A method for synchronizing a logical clock in a device comprising a physical clock, an input port, and an output port, the device further comprising a logical clock and a time compensation clock sharing the physical clock, the time compensation clock making it possible to determine a residence time, comprising obtaining a theoretical residence time, during a pre-synchronization phase according to which the logical clock is not synchronized, adding a value representative of the obtained theoretical residence time to a residence time value stored in a synchronization message to be forwarded, during a synchronization phase according to which the logical clock is synchronized, obtaining a residence time and adding a value representative of the obtained residence time to a residence time value stored in a synchronization message to be forwarded, and synchronizing the logical clock as a function of a residence time value stored in a received synchronization message.