Electronic Timepiece Memory Management for World Time
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Solution Overview
Problem
Electronic timepieces with world time functions face difficulties in managing multiple city time settings, leading to confusion and unnecessary memory usage when switching between home and world times, especially when additional cities are involved.
Innovation Solution
The electronic timepiece employs a storage system with separate areas for additional city data and preset city data, where additional city data is cleared when switched to the preset city data, optimizing memory usage and user clarity during city switching processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional city data is stored in the electronic timepiece to expand world time functionality, then the versatility and adaptability of the device is improved, but the memory usage increases and switching operations become more complex
Solution Approach 1:
The storage device is divided into a first storage area for additional city data and a second storage area for preset city data. This segmentation allows the system to manage different types of city data separately, enabling efficient memory utilization while supporting both additional and preset cities in the world time function.
Solution Approach 2:
When switching from additional city data to preset city data, the additional city data in the first storage area is cleared. This discarding mechanism recovers memory space for future use while maintaining the functionality of storing new additional cities when needed, thus managing memory usage dynamically.
2Adaptability or versatility
If multiple additional cities are stored to enhance world time functionality, then the adaptability is improved, but the switching operation complexity increases making it troublesome
Solution Approach 1:
By segmenting storage into first and second areas for additional and preset cities respectively, the system provides clear organizational structure that simplifies switching operations. Users can easily distinguish between additional and preset cities during switching, reducing operational complexity despite having multiple cities available.
3Reliability
If additional city data is retained after switching to preset city data, then data preservation is improved, but memory redundancy increases creating unnecessary memory usage
Solution Approach 1:
The system clears additional city data in the first storage area when switching to preset city data from the second storage area. This ensures that only currently active city data is retained in memory, eliminating redundancy while preserving necessary data through the structured storage approach that allows re-loading of additional cities when needed.
4Productivity
If city switching is performed without clear indication of data origin, then switching speed is improved, but user confusion increases reducing clarity
Solution Approach 1:
The segmented storage structure enables the system to maintain clear information about the origin of city data (additional vs. preset). This organizational structure allows fast switching while preserving user clarity by systematically managing different data sources, preventing confusion about which city data is currently active.
Data Source
AI summary
An electronic timepiece that displays time based on city data related to the time of a city includes: a second home time storage area and a third world time storage area that store additional city data related to the time of an additional city transmitted from an external device; a storage area other than the second home time storage area and the third world time storage area; and a processing unit that clears the additional city data stored in the second home time storage area and the third world time storage area when selected data is switched from the additional city data stored in the second home time storage area and the third world time storage area to the city data stored in the storage area.