Electronic Timepiece Automatic Position-Based World Clock Synchronization
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Solution Overview
Problem
Existing electronic timepieces with world clock functions require manual modification of sub clocks when changing positions, as they lack automatic association of sub clock date and time with position information, leading to potential overwriting of original settings.
Innovation Solution
An electronic timepiece with a timer unit, current position acquiring unit, associated position selecting unit, and local time calculating unit that automatically calculates and displays local times for both main and sub clocks based on current and associated positions, using GPS and time difference information from a reference position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the date and time of sub clock are counted and displayed independently of main clock, then the sub clock can display time at another position, but the date and time data of sub clock are not stored in association with position information, requiring manual modification and potentially overwriting original settings
Solution Approach 1:
The timepiece automatically associates sub clock date and time data with position information without requiring manual intervention. When the user moves to a different position, the system automatically updates the sub clock settings based on the stored position information, eliminating the need for manual modification while preventing overwriting of original settings.
Solution Approach 2:
Position information is stored in advance in the memory before the user actually needs to display time at a different position. This preliminary storage of position data allows the system to automatically retrieve and apply the correct sub clock settings when the user moves, avoiding manual configuration needs.
2Adaptability or versatility
If the numbers of steps of hands of sub clock are different from main clock, then the sub clock can display time at another position, but the date and time of main clock and sub clock need to be modified independently of each other
Solution Approach 1:
The system merges the control of main clock and sub clock into a unified position-based framework. Both clocks share the same position information storage and automatic update mechanism, allowing them to be modified together based on the user's location rather than independently, reducing operational complexity while maintaining display flexibility.
3Ease of operation
If position information is not stored in association with sub clock date and time, then the sub clock can be manually modified, but manual modification is required each time and may overwrite original position settings
Solution Approach 1:
The system automatically maintains position information integrity by storing sub clock date and time data in association with position information. When the user moves to a different position, the system automatically retrieves the correct settings from stored position data without requiring manual input, thereby preventing overwriting of original settings while eliminating manual adjustment needs.
Data Source
AI summary
An electronic timepiece includes: a timer unit configured to count date and time; a current position acquiring unit configured to acquire a current position; an associated position selecting unit configured to select an associated position preset according to a current position when the current position is acquired; a local time calculating unit configured to calculate local time at the current position and local time at the associated position based on the date and time counted by the timer unit, time difference information of the current position and time difference information of the associated position on differences in time from a predetermined reference position; and a display part configured to display the calculated local times simultaneously or by selectively switching therebetween.