Vehicular Display System Using Mobile Device Copy
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Solution Overview
Problem
The existing vehicular display systems have complex configurations that increase manufacturing costs due to the need for sophisticated electronic control units to adjust luminance and pixel values based on cabin illuminance, making them costly to produce.
Innovation Solution
A vehicular display system that uses a mobile device with a display part to show vehicle information, such as vehicle speed, instead of a fixed on-board unit, allowing for wireless connectivity and reducing the need for complex control units, thereby lowering manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed on-board unit with complex control means is used to display vehicular information, then the display functionality is reliable, but the manufacturing cost increases
Solution Approach 1:
The patent uses a mobile device (tablet, smartphone, or navigation device) as a copy substitute for the fixed on-board display unit. The mobile device's display unit replicates the vehicular information display function, allowing the vehicle to use existing mobile devices instead of manufacturing expensive fixed on-board units with complex control electronics.
Solution Approach 2:
The mobile device serves multiple functions: it displays vehicular information (speed, navigation, warnings) and simultaneously functions as a general-purpose mobile device for communication, entertainment, and other applications. This multi-functionality eliminates the need for dedicated fixed on-board display units.
2Ease of manufacture
If a mobile device is used to display vehicular information, then the manufacturing cost is reduced, but the device positioning and visibility may be compromised
Solution Approach 1:
The mobile device is positioned dynamically on the vehicle's dashboard or windshield area, allowing flexible placement optimized for driver visibility and ergonomics. The device can be adjusted and repositioned as needed, unlike fixed on-board units with predetermined positions.
Solution Approach 2:
The mobile device acts as an intermediary between the vehicular sensors/ECU and the driver. It receives vehicular information data wirelessly or via connection, processes and displays it in an accessible format, and can be positioned at an optimal viewing location that balances driver visibility and device functionality.
Data Source
AI summary
A vehicular display system includes a vehicle on-board unit having a vehicular display part, and a mobile device having a mobile display part. The vehicular display part is fixedly mounted on a vehicle and configured to display vehicular information including at least a vehicle speed. The mobile display part is configured to display the vehicular information including the vehicle speed when the mobile device is set in position between a driver of the vehicle and the vehicular display part.