Display Driver IC Time Error Correction
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Solution Overview
Problem
Conventional electronic devices often experience time information display errors due to asynchronous operations between elements processing and providing time information, leading to incorrect time displays.
Innovation Solution
An electronic device with a display driver integrated circuit that receives external reference time information, generates internal time information based on an internal clock, and corrects any time errors by compensating for differences between internal and external time information, ensuring accurate time display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the display driver integrated circuit operates independently with an internal clock to reduce power consumption, then power consumption is reduced, but time information display accuracy deteriorates due to asynchronous operation with the processor
Solution Approach 1:
The display driver integrated circuit receives external reference time information from the processor and uses this feedback to correct time errors in the internal clock. The system continuously compares internal time information with external reference time and compensates for discrepancies, ensuring accurate time display while maintaining independent operation and low power consumption.
Solution Approach 2:
The system performs preliminary time correction by receiving external reference time information before displaying time information. The display driver integrated circuit proactively compensates for potential time errors by using the external reference time to adjust the internal clock, preventing inaccurate time display before it occurs.
2Measurement precision
If the display driver integrated circuit periodically receives external reference time information to maintain accuracy, then time information display accuracy is improved, but device complexity increases due to additional synchronization mechanisms
Solution Approach 1:
The display driver integrated circuit autonomously performs time synchronization by comparing its internal time information with external reference time information and automatically compensating for errors. The system self-corrects time discrepancies without requiring complex external synchronization hardware or manual intervention, maintaining accuracy while keeping the mechanism relatively simple.
3Measurement precision
If the system corrects time errors by compensating for differences between internal and external time information, then time information display accuracy is improved, but processing time increases due to comparison and correction operations
Solution Approach 1:
The display driver integrated circuit performs time correction operations periodically rather than continuously. The system receives external reference time information at specific intervals and applies corrections when necessary, rather than constantly comparing and adjusting time information. This periodic approach maintains accuracy while minimizing processing time and computational overhead.
Data Source
AI summary
An electronic device is provided. The electronic device may include a display, a processor operatively connected with the display and configured to generate external reference time information, a display driver integrated circuit configured to periodically or randomly receive the external reference time information from the processor, wherein the display driver integrated circuit is configured to generate internal time information based on an internal clock, to output a clock image corresponding to the internal time information on the display, and if a time error between the external reference time information and the internal time information occurs during the outputting of the clock image, to output the internal time information, the time error of which is corrected, on the display.