Map Area Designation for Indoor Position Correction
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Solution Overview
Problem
Existing position estimation techniques, such as GPS, are time-consuming and inaccurate indoors or underground, and lack sufficient methods for improving user-recognized position accuracy in wireless communications.
Innovation Solution
An information processing apparatus and method that allows users to accurately represent their position by designating a specific area on a map with adjustable center and size settings, using a terminal device and server to correct position information based on user feedback and error radii.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS position estimation is used, then position information can be obtained, but the initialization is time-consuming and it cannot function indoors or underground
Solution Approach 1:
The patent uses base stations as intermediary objects to enable position estimation in environments where GPS cannot function (indoors, underground). By measuring signal strength from multiple base stations and calculating position based on these measurements, the system provides position information without requiring satellite signals, thus resolving the limitation of GPS in indoor/underground environments.
2Adaptability or versatility
If base station signal strength measurement is used for position estimation, then position can be estimated indoors or underground, but the accuracy of user-recognized position is insufficient
Solution Approach 1:
The patent implements a feedback mechanism where the user can visually recognize their position on a map display and provide correction input if the estimated position is inaccurate. The system compares the user's recognized position with the GPS/base station estimated position and uses the user's feedback to correct the position information, thereby improving the accuracy of user-recognized position while maintaining the adaptability of indoor/underground operation.
3Measurement precision
If multiple base stations are registered and their positions are updated, then position estimation accuracy can be improved, but the complexity of the system increases
Solution Approach 1:
The patent enables automatic registration and updating of base station information through the user's terminal device. When a user moves to a new location, the terminal automatically detects base stations, registers their signal strengths and positions, and updates the database without requiring manual intervention. This self-service approach improves position estimation accuracy through multiple base stations while minimizing the increase in system complexity by automating the registration process.
Data Source
AI summary
There is provided an information processing apparatus including a display control unit for causing a display unit to display a map, a first operation obtaining unit for obtaining a first operation for moving a center of a designated area on the map, a second operation obtaining unit for obtaining a second operation different from the first operation for moving the center, and a size setting operation obtaining unit for obtaining a size setting operation for setting a size of the designated area.