Detachable Peripheral Map Display for Vehicle Navigation
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Solution Overview
Problem
Conventional personal navigation devices require users to dismount and carry them to obtain new navigation instructions after parking, leading to inconvenience and risk of getting lost, especially in unfamiliar areas, due to their bulkiness and the need for external power when displaying maps.
Innovation Solution
A portable navigation device with a detachable peripheral device that stores detailed maps and navigation instructions without external power, allowing users to download maps around a destination and carry the peripheral device for easy reference, while the main console remains in the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the personal navigation device is fully self-contained with internal GPS antenna, navigation software and map database, then the device can plot and display a route independently, but the device becomes bulky and inconvenient to carry when dismounted from the vehicle
Solution Approach 1:
The navigation system is divided into two segments: a stationary navigation console remaining in the vehicle and a portable peripheral device containing the map database. This segmentation allows the heavy map database to stay in the vehicle while only the lightweight peripheral device is carried by the user.
Solution Approach 2:
The map database is extracted from the self-contained navigation device and stored in the peripheral device instead. This extraction removes the bulky component while retaining the essential navigation functionality through electronic transmission of map data.
2Ease of operation
If the user dismounts the personal navigation device to obtain new navigation instructions after parking, then the user can access updated routes, but the user experiences inconvenience and risk of getting lost due to needing to carry the device
Solution Approach 1:
The map database is extracted and stored in the portable peripheral device, allowing users to carry only this lightweight component instead of the entire navigation system. Users can access updated map data and navigation instructions without returning to the vehicle.
Solution Approach 2:
The system automatically downloads detailed maps and navigation instructions to the peripheral device before the user needs them. This preliminary action ensures that when the user parks and dismounts, all necessary navigation information is already available in the portable device.
3Ease of operation
If the peripheral device displays detailed maps without external power supply when detached, then the user can reference maps anywhere, but the peripheral device requires additional power management complexity
Solution Approach 1:
The power supply mode of the peripheral device is changed from requiring external power to having built-in power capabilities. This parameter change enables the device to function independently as a portable map display, though it does introduce some power management complexity.
Data Source
AI summary
A personal navigation device includes a navigation console and a peripheral device. The navigation console is configured to acquire a navigation instruction from a start point to a destination and a detailed map which depicts a predetermined area around the destination. The peripheral device is connected to the navigation console in a detachable manner for displaying the detailed map.