Purpose-Based Navigation Guidance With Two-Stage Destination Setting
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Solution Overview
Problem
Existing navigation systems require users to estimate their destination by comparing displayed images with the landscape, leading to poor usability, especially in large facilities like parking lots, making it easy to get lost.
Innovation Solution
A navigation apparatus that performs two-stage destination setting, first temporarily setting a broad area based on user input and then narrowing it down to a specific location based on purpose information, using map and facility data to provide precise route guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a detailed destination image is displayed on a map for users to estimate their destination, then the system provides basic navigation capability, but the usability is poor for users not used to driving and it is easy to get lost in large facilities like parking lots
Solution Approach 1:
The patent divides the destination setting process into two stages: first setting a broad area (first destination) and then narrowing it down to a specific location (second destination) based on purpose information. This segmentation allows users to provide general destination information without needing to precisely identify locations, while the system handles the detailed localization, solving the contradiction between ease of operation and destination identification accuracy.
Solution Approach 2:
The patent introduces purpose information as an intermediary element that bridges the gap between user input and precise destination identification. By using purpose information (e.g., shopping, dining, entertainment) as a mediator, the system can accurately determine the second destination without requiring users to have precise location knowledge, thereby improving usability while maintaining destination identification accuracy.
2Productivity
If users are required to estimate destination by comparing displayed image with landscape, then the system provides basic navigation, but it makes it difficult to determine which area to proceed in large facilities like parking lots
Solution Approach 1:
The patent segments the navigation process into two distinct phases: area-level navigation to the first destination and location-level navigation to the second destination. This segmentation improves navigation efficiency by providing clear hierarchical guidance, while simultaneously improving ease of use by allowing users to input general destination information without needing to identify specific locations within large facilities.
Solution Approach 2:
The patent performs preliminary action by automatically determining the second destination based on purpose information before providing detailed route guidance. This preliminary determination of the specific destination within the broad area eliminates the need for users to manually search or estimate locations, thereby improving both navigation efficiency and ease of use.
3Device complexity
If a single destination point is set without considering purpose information, then the system provides simple route guidance, but it cannot provide precise guidance in large facilities with multiple similar locations
Solution Approach 1:
The patent segments destination information into two levels: the first destination (broad area) and the second destination (specific location). This segmentation allows the system to maintain simplicity in the overall structure while achieving high destination specificity through the two-stage approach, resolving the contradiction between system simplicity and destination precision.
Solution Approach 2:
The patent applies preliminary action by determining the second destination based on purpose information before generating the final route guidance. This preliminary determination ensures high destination specificity for locations within large facilities, while the system remains simple because users only need to provide general destination information and purpose, without needing to specify exact locations.
Data Source
AI summary
A navigation apparatus includes a microprocessor communicatively connected to an input device and an output device. The microprocessor is configured to perform: acquiring position information indicating a current position of a vehicle; receiving an input of destination information indicating a destination and an input of purpose information indicating a purpose; referring to map information including road map information and facility information; temporarily setting a predetermined range including the destination as a first destination based on the destination information and the road map information; setting a specific position narrower than a range of the first destination as a second destination based on the purpose information and the facility information; setting a route based on the position information of the vehicle and a position information of the second destination; and outputting route guidance information based on the route and the position information of the vehicle.