Clock Time Synchronization for Intermittent Communication Links
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Solution Overview
Problem
Conventional communication systems struggle to synchronize multiple communication apparatuses effectively, especially when communication states change, and they are not well-suited for intermittent connections, making it difficult to uniformly set communication delay times.
Innovation Solution
A communication system with a clock time management section, a clock time measurement section, a clock time difference generation section, and a clock time correction instruction section that measures and synchronizes clock times between apparatuses, allowing for flexible synchronization and operation over intermittent connections like Bluetooth Low Energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If preset fixed delay time is set to synchronize communication between plural instruments, then synchronization between instruments is achieved, but it becomes impossible to cope with changes in communication state
Solution Approach 1:
The patent implements dynamic delay time adjustment by continuously measuring communication delay time between instruments and automatically updating the delay time setting. This allows the system to adapt to changing communication states (wireless/wired, intermittent connections) while maintaining synchronization, resolving the contradiction between fixed synchronization and adaptability to communication changes
Solution Approach 2:
The system employs feedback mechanisms by measuring the actual communication delay time between instruments and using this measured value to adjust the delay time setting. This closed-loop approach ensures that synchronization is maintained even when communication conditions change, as the system continuously monitors and adjusts based on actual performance
2Use of energy by moving object
If communication scheme for intermittent connection is used for electricity saving, then energy consumption is reduced, but it becomes difficult to uniformly set communication delay time
Solution Approach 1:
The system performs self-service by automatically measuring communication delay time and adjusting delay settings without requiring manual configuration. This enables uniform delay time setting across instruments with intermittent connections, as each instrument autonomously adapts to the actual communication conditions while maintaining energy-saving operation modes
Solution Approach 2:
The patent dynamically changes the delay time parameter based on measured communication conditions. By adjusting this critical parameter automatically, the system maintains uniform synchronization behavior across instruments even when operating in intermittent connection modes for energy saving, resolving the contradiction between energy efficiency and operational uniformity
Data Source
AI summary
Plural communication apparatuses connected via communication are synchronized while flexibly coping with a change in the communication state.A clock time management section manages a clock time. A clock time measurement section measures a clock time of another clock time management section of another apparatus and a clock time of the clock time management section of this apparatus for every predetermined processing, in the course of communication with the other apparatus having the other clock time management section. A clock time difference generation section generates a clock time difference between the clock time of the other clock time management section and the clock time of the clock time management section on the basis of the measured clock times. A clock time correction instruction section instructs the other apparatus to correct the clock time of the other clock time management section on the basis of the generated clock time difference.