Map Information Update Apparatus Using Broadcast and Wireless Signals
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Solution Overview
Problem
Existing map information update systems face challenges in efficiently updating large volumes of map data without incurring excessive communication costs, as radio waves may not be sufficient for data transfer and mobile network updates can be costly.
Innovation Solution
A map information update apparatus and system that utilizes a combination of broadcast waves and wireless communication units, including mobile phone networks and direct terminal communication, to update map information for each division area based on predefined threshold criteria, optimizing data transfer and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If map information is updated using broadcast waves, then communication costs are reduced, but map information with large volume cannot be smoothly updated
Solution Approach 1:
The map information is divided into multiple division areas, allowing selective updating of specific regions rather than entire maps. This enables efficient use of broadcast waves for small updates while maintaining cost-effectiveness
Solution Approach 2:
The system dynamically switches between broadcast wave reception and wireless communication based on the update volume and type of map information required, optimizing both cost and efficiency for different scenarios
2Productivity
If map information is updated using mobile phone network, then map information can be updated smoothly, but communication charges arise becoming a burden for users
Solution Approach 1:
The system changes the communication parameter (broadcast wave vs. wireless communication) based on the update volume and type, using broadcast waves for small updates to reduce costs and wireless communication for large updates to ensure efficiency
Data Source
AI summary
A map information update apparatus includes: a map information storage unit that stores district map information including a plurality of division areas; a receiver that receives a broadcast wave carrying information of one or more of the plurality of division areas; a wireless communication unit that receives a radio wave carrying information of one or more of the plurality of division areas by wireless communication; and an information update unit that updates, when the district map information does not satisfy a first basis, the district map information for each division area based on the information carried by the broadcast wave received by the receiver and updates, when the district map information satisfies the first basis, the district map information for each division area based on the information carried by the radio wave received by the wireless communication unit.