Vehicle AVN Clock Synchronization Error Reset Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing synchronization methods between AVN systems and vehicle digital clocks often malfunction due to system load or transmission delays, leading to inaccurate time display.
Innovation Solution
A synchronization apparatus and method that includes a clock driving unit, a microcomputer, and an external clock module, where the microcomputer analyzes clock information signals, updates them based on analysis results, and transmits the updated information to the external clock module, with error counting and resetting mechanisms to prevent malfunctions caused by transmission errors or delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If time synchronization is performed between AVN system and digital clock, then the digital clock displays accurate time information, but malfunctions occur due to system load or transmission delay
Solution Approach 1:
The microcomputer analyzes received clock information signals and compares them with previously transmitted signals to detect transmission errors. When errors are detected, the system counts them and resets the clock driving unit when the error count exceeds a threshold, creating a feedback mechanism that maintains synchronization reliability despite transmission delays or system load variations
Solution Approach 2:
The system performs preliminary error detection by comparing incoming clock information signals with previously transmitted signals before updating the clock. This preliminary analysis prevents erroneous updates due to transmission delays and identifies potential synchronization issues before they cause malfunctions
2Measurement precision
If the microcomputer continuously updates clock information, then the time precision is improved, but system load increases causing transmission delays
Solution Approach 1:
The microcomputer performs partial updates by comparing incoming clock information signals with previously transmitted signals and only updating when the comparison confirms accuracy. This selective updating approach maintains time precision while reducing unnecessary processing operations and system load
Data Source
AI summary
A synchronization apparatus between an AVN system and a digital clock of a vehicle may include: a clock driving unit configured to transmit a clock information signal; a microcomputer configured to analyze the clock information signal when the clock information signal is received from the clock driving unit, update clock information according to the analysis result, and transmit the updated clock information to an external clock module; and the external clock module configured to display the clock information transmitted from the microcomputer.