Clocking Device Correction Circuit for Time Synchronization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing clocking devices face challenges in maintaining accurate time synchronization when power is interrupted, leading to potential time differences and requiring complex communication controls for correction, especially in systems where minute errors are critical.
Innovation Solution
A clocking device with a first and second clocking circuit, an interface circuit, and a storage circuit that allows for the transmission and storage of correction values to adjust the update timing of clocking data, enabling accurate clocking correction even during power interruptions and communication delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a master periodically repeatedly sets time in the clocking device to ensure clocking accuracy, then clocking accuracy is improved, but device complexity increases due to complex communication control requirements
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing correction values in the clocking device before time setting operations. The correction values, which compensate for communication delays and timing differences, are prepared in advance and stored in memory, eliminating the need for complex real-time communication control during periodic time setting operations.
2Measurement precision
If complex communication control is used to adjust timing, then clocking accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The clocking device performs self-correction by automatically applying stored correction values to its internal timing operations. The device independently adjusts its clocking accuracy using pre-computed correction data without requiring complex external communication control, thereby simplifying operation while maintaining precision.
3Device complexity
If time synchronization is performed only when power is resumed, then device complexity is reduced, but reliability deteriorates during power interruptions
Solution Approach 1:
The system performs preliminary action by maintaining correction values in the clocking device's memory before power interruptions occur. These pre-stored correction values enable the device to continue accurate timekeeping during power loss, and when power is resumed, the slave can immediately synchronize with the master using the existing correction data without requiring complex real-time synchronization protocols.
Data Source
AI summary
A clocking device includes a first clocking circuit that generates first clocking data in synchronization with a clock signal, a second clocking circuit that generates second clocking data which is updated in a cycle longer than a cycle in which the first clocking data is updated, an interface circuit that transmits the first clocking data to an external device, and receives a first correction value from the external device, and a storage circuit that stores the first correction value, in which the first clocking circuit sets the first correction value in the first clocking data so as to correct an update timing of the second clocking data.