Real-Time Clock Synchronization Using Master-Slave Pulse Correction
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Solution Overview
Problem
Existing real-time clock systems become complicated and costly when performing time synchronization across multiple devices, leading to increased power consumption and complexity due to the need for external time sources and processing devices.
Innovation Solution
A real-time clock device with a first mode (master) and second mode (slave) that uses a reference pulse signal for time correction and synchronization, allowing devices to operate as masters or slaves, reducing the need for external time sources and processing devices, and enabling simplified system configuration and reduced power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If time synchronization is performed by inputting time information from outside to each real-time clock device, then time synchronization accuracy is improved, but device complexity increases
Solution Approach 1:
Each real-time clock device performs time synchronization autonomously by receiving only the reference pulse signal and internally generating the synchronization pulse signal based on its own clock count, eliminating the need for external processing devices to manage synchronization across the system
Solution Approach 2:
The system divides the time synchronization function into independent units where each real-time clock device independently receives the reference pulse signal, performs local time correction, and generates its own synchronization pulse signal, rather than relying on a centralized external time source
2Measurement precision
If external time sources and processing devices are used for time synchronization, then time synchronization accuracy is improved, but power consumption increases
Solution Approach 1:
Each real-time clock device autonomously performs time synchronization using its own oscillation circuit and clock count circuit, eliminating the need for power-intensive external processing devices and time sources while maintaining synchronization accuracy through the reference pulse signal
Data Source
AI summary
A real-time clock device a real-time clock device that has a first mode and a second mode, the device including an input terminal to which a reference pulse signal of a time is input, an output terminal that outputs a synchronization pulse signal of the time, an oscillation circuit that outputs an oscillation clock signal, a clock count circuit that generates information on an internal time based on the oscillation clock signal, and a processing circuit that performs time correction of the internal time based on the reference pulse signal input from the input terminal and causes the output terminal to output the synchronization pulse signal generated based on the information on the internal time in the first mode, and performs the time correction of the internal time based on the reference pulse signal input from the input terminal in the second mode.