Wrist Terminal Map Update via Portable Bluetooth Relay
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Solution Overview
Problem
Portable map information providing devices face challenges in displaying map information outside their stored range, particularly in environments where mobile communication networks are unavailable, as they rely on telephone lines for acquiring additional map data.
Innovation Solution
A system comprising a wrist terminal and a portable map transmitting apparatus that communicate via Bluetooth Low Energy and Wi-Fi, allowing the wrist terminal to acquire and update map information from the portable apparatus, which in turn downloads data from a map server, enabling map display beyond its initial storage range without relying on mobile communication networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the wrist terminal stores more map information to expand display range, then the map coverage is improved, but the device size and power consumption increase
Solution Approach 1:
The map information is segmented into two parts: frequently used map data is stored in the wrist terminal's limited storage, while additional map data is stored in the portable terminal device with larger storage capacity. The system dynamically segments the map data based on usage patterns, allowing the wrist terminal to maintain only essential map information while accessing extended map ranges through wireless communication with the portable terminal device.
2Area of stationary object
If the wrist terminal uses mobile communication to acquire map information, then the map range is extended, but the power consumption increases significantly
Solution Approach 1:
The portable terminal device acts as an intermediary between the wrist terminal and the map information source. Instead of the wrist terminal directly using power-consuming mobile communication to acquire map data, it receives map information wirelessly from the portable terminal device through low-power communication protocols. This intermediary approach significantly reduces the power consumption associated with map data acquisition while still enabling extended map coverage.
3Loss of information
If the wrist terminal relies on telephone line communication for map data, then map information can be acquired, but the system complexity and dependency on external networks increase
Solution Approach 1:
Map information is preliminarily transferred from the portable terminal device to the wrist terminal before it is needed for display. The system performs preliminary data synchronization when the wrist terminal is charging or when connectivity is available, so that frequently accessed map data is already stored locally. This preliminary action reduces the need for complex real-time communication protocols and external network dependencies during actual map usage.
4Area of stationary object
If the wrist terminal has larger storage capacity for map data, then the displayable map range is improved, but the device size and cost increase
Solution Approach 1:
The system merges the storage resources of two devices: the wrist terminal provides fast access to frequently used map data, while the portable terminal device provides additional storage capacity for extended map ranges. By combining these storage resources and implementing intelligent data distribution, the system achieves extended map coverage without requiring the wrist terminal to have large internal storage, thus avoiding increased device size and cost.
Data Source
AI summary
A map information providing apparatus and method are provided. Second map information of a second map range is acquired from an external apparatus having first map information of a first map range. A portable map transmitting apparatus having third map information of a third map range is communicated with the map information providing apparatus. The third map range is wider than the second map range. The second map range is narrower than the first map range. It is determined whether it is possible to provide predetermined map information corresponding to predetermined position information based on the second map information to the map information providing apparatus. If so, communication with the portable map transmitting apparatus is controlled to receive the third map information. The second map information is updated based on the third map information and the predetermined map information is acquired from the updated second map information.