Position Measurement Device Data Extraction for Location Services
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Solution Overview
Problem
Existing position measurement devices generate large volumes of positional data, but lack a method to differentiate between useful and unnecessary data, making it difficult to effectively utilize valuable location information for services and functions.
Innovation Solution
A position measurement device with positional data acquisition, storage, and determination means to identify and store only relevant positional data based on predetermined criteria, such as stay time and area radius, allowing for efficient generation of locational information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If all positional data is recorded, then complete position history is available, but data volume becomes excessively large and difficult to utilize
Solution Approach 1:
The patent extracts only the essential and useful positional information from the complete position history. By identifying and recording only significant position changes and stay locations rather than all positional data, the system reduces data volume while preserving the most valuable positioning information for navigation and location-based services.
2Quantity of substance
If positional data is filtered to reduce volume, then data usability improves, but risk of losing useful information increases
Solution Approach 1:
The patent changes the parameters used to evaluate positional data significance. Instead of recording all positions, it uses criteria such as minimum stay time thresholds and position change magnitude thresholds to determine which positions are worth recording. This parameter-based filtering ensures that only meaningful positional information is retained, maintaining reliability while reducing volume.
3Loss of information
If all positional data is stored, then no information is lost, but processing and analysis become inefficient
Solution Approach 1:
The patent extracts and stores only the most relevant positional data points that are useful for navigation and location-based services. By removing redundant and unnecessary position records from the dataset, the system significantly improves data processing efficiency and analysis speed while retaining the essential information needed for practical applications.
4Measurement precision
If comprehensive position measurement is performed, then detailed behavior history is acquired, but differentiation between useful and unnecessary data becomes difficult
Solution Approach 1:
The patent introduces specific evaluation parameters such as stay time thresholds and position change magnitude thresholds to automatically differentiate between useful and unnecessary positional data. These parameter-based criteria simplify the differentiation process by providing clear, objective standards for determining which position records should be retained, reducing system complexity while maintaining measurement precision.
Data Source
AI summary
In position measurement device, a positional data acquirer measures a present position to acquire positional data. A positional data storage sequentially stores the positional data acquired by the positional data acquirer. A determiner determines, on the basis of the positional data sequentially stored by the positional data storage and a predetermined criterion, whether a position of a user at a present time is a position of a location to be recorded. And, a locational information storage stores, if the determiner determines that the position of the user at the present time is the position of the location to be recorded, the positional data of the position as locational information.