Time synchronization method and device between devices

By recording timestamp information through a pre-built communication channel between the system-on-a-chip and the microcontroller unit, clock deviation and synchronization confidence are determined, and the synchronization interval is dynamically adjusted. This solves the problems of insufficient synchronization accuracy and rigid strategies in existing technologies, and achieves high-precision and adaptive time synchronization.

CN121585306APending Publication Date: 2026-02-27CHONGQING SELIS PHOENIX INTELLIGENT INNOVATION TECH CO LTD
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Patent Information

Application Number
CN202511945430.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-22
Publication Date
2026-02-27

AI Technical Summary

Technical Problem

In the existing technology, the time synchronization scheme between system-on-a-chip and microcontroller unit is insufficient in terms of synchronization accuracy and strategy adaptability, making it difficult to meet the requirements of high-precision applications. It is also susceptible to noise or abnormal interference, resulting in synchronization errors and clock jump risks.

Method used

By performing a handshake operation based on a pre-built communication channel, recording the timestamp information of the local end and the synchronization end, determining the clock deviation value and synchronization confidence, matching the time synchronization strategy, and adjusting the synchronization interval duration according to the confidence and deviation value, high-precision and adaptive time synchronization can be achieved.

Benefits of technology

It improves the accuracy and robustness of time synchronization between devices, reduces synchronization errors and clock jump risks, and enhances system stability and efficiency.

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Abstract

The invention provides an inter-device time synchronization method and device, and the method comprises the steps: carrying out a handshake operation with a to-be-synchronized device based on a pre-constructed communication channel in response to the triggering of a time synchronization operation, and recording the local end timestamp information and the synchronization end timestamp information of the handshake operation, and reading synchronization end timestamp information according to a feedback message sent by the to-be-synchronized device, determining a clock skew value of the to-be-synchronized device and a synchronization confidence coefficient of the time synchronization based on the local end timestamp information and the synchronization end timestamp information, and matching a time synchronization strategy according to the clock skew value and the synchronization confidence coefficient, so that the to-be-synchronized device performs time synchronization correction. And determining a synchronization interval duration according to the synchronization confidence and the clock skew value, so as to execute the next time synchronization operation according to the synchronization interval duration, the timestamp information is recorded through the handshake operation, the clock skew and the synchronization confidence coefficient are determined, the time synchronization strategy is matched, the synchronization interval is determined, and the problems that the synchronization precision is insufficient and the strategy is not flexible are solved.
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