High-precision synchronisation method and system

Abstract

Method of synchronizing clocks between a first reference clock and a second clock to be slaved on the frequency of the reference clock, the two sharing a common clock, this method comprising the following steps: calculation of the integer part of the timestamp using the reference clock and the common clock; generation of a system clock local to the reference clock; calculation of the phase shift between the system clock signal and the reference clock signal; calculation of the phase shift between the system clock signal and the common clock signal; calculation of the decimal part of the timestamp; sending of the decimal timestamp to the second clock; slaving of the second clock using the common clock and the timestamp received.

Description

technical field [0001] The present invention relates to the technical field of time data management, and more particularly, the present invention relates to clock synchronization. Background technique [0002] Synchronization is one of the key issues essential to the correct operation of real-time applications in distributed systems. A "distributed system" is any networked collection of entities communicating over a network such as a communications network (wired or mobile), a computer network, or a multi-processor hardware architecture. Furthermore, in the following, an "entity" refers to any processor, application, node, or more generally to a method or system requesting temporal information. [0003] Typically, in a distributed system, a distinction is made between multiple entities requesting a common notion of time. To achieve this, the first steps are: [0004] have all entities refer to a single shared global clock; or [0005] All these entities are configured wi...

AI Technical Summary

Problems solved by technology

They do not detail the number of reference clock pulses observed within the time window of the common clock

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