Navigation Device Preference-Based Surrounding Content Acquisition
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Solution Overview
Problem
Vehicle navigation devices fail to provide users with freshly updated information relevant to their preferences and location, as they cannot acquire and display RSS files corresponding to unregistered keywords or newly updated facilities around the user's current position.
Innovation Solution
A navigation device equipped with an acquisition section for obtaining updated content based on user preferences, a detection section for identifying surrounding position information, and a search section to find relevant updated content, allowing for the provision of fresh information tailored to the user's interests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the navigation device only acquires facility information based on registered POI data, then the device maintains data consistency and reliability, but it cannot provide freshly updated information about newly opened facilities or facilities with unregistered keywords
Solution Approach 1:
The patent merges two information acquisition approaches: traditional POI-based facility information and RSS-based web content information. The system combines these previously separate information sources into a unified notification system that leverages the reliability of POI data while gaining the freshness and versatility of RSS feeds from external websites.
Solution Approach 2:
The system performs preliminary acquisition of RSS files containing facility update information before the user needs this information. By continuously monitoring and storing RSS feeds from multiple websites in advance, the navigation device is prepared to provide fresh information about newly opened facilities or events without requiring real-time user requests.
2Adaptability or versatility
If the navigation device acquires all RSS files from multiple websites, then the device can provide comprehensive updated information, but it increases the burden of processing and managing large volumes of data
Solution Approach 1:
The system extracts and isolates only the essential facility information from the acquired RSS files. Rather than processing entire RSS documents, the navigation device extracts specific elements such as facility names, locations, and update timestamps, storing only these critical data points for efficient later retrieval and display.
Solution Approach 2:
The system performs preliminary filtering and organization of RSS data during the acquisition phase. By pre-processing RSS files to extract and categorize facility information before storage, the system reduces the complexity of subsequent data retrieval and presentation operations.
3Productivity
If the navigation device continuously monitors and acquires updated RSS information, then the device can provide fresh information to users, but it increases power consumption and data transmission usage
Solution Approach 1:
The system implements periodic acquisition of RSS files at predetermined time intervals rather than continuous monitoring. This approach allows the navigation device to balance information freshness with energy conservation by checking for updates at regular intervals and entering low-power states between acquisitions.
Solution Approach 2:
The system uses feedback mechanisms to intelligently adjust acquisition frequency based on update patterns. By monitoring whether RSS feeds contain new information and analyzing update frequencies, the system can reduce acquisition attempts when no updates are expected, thereby conserving power while maintaining information freshness when updates occur.
Data Source
AI summary
A navigation device includes: an acquisition section for acquiring plurality of updated content introductory information each representing the latest updated content in a predetermined web site based on user's preference information; a detection section for detecting surrounding position information covering an area around the current position from large number of position information stored in a predetermined storage section; and a search section for searching for particular updated content introductory information corresponding to the surrounding position information detected by the detection section as surrounding updated content introductory information from the plurality of updated content introductory information acquired by the acquisition section.