Vehicle Display Device with Backup Controller for Power Failure
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Solution Overview
Problem
The removal of side-view mirrors in vehicles and replacement with camera display devices can lead to safety issues when the power supply is shut down, as it disrupts the field of view for the driver, potentially causing safety hazards.
Innovation Solution
A vehicle display device system with multiple display units and power supply monitoring, where a third display unit displays images from first and second display units when their power supplies are abnormal, ensuring continuous field of view for the driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power supply is shut down to prevent display panel damage, then the display panel is protected from abnormality, but the driver's field of view is lost causing safety hazards
Solution Approach 1:
The patent merges the display functions of multiple display units into a single third display unit. When the first or second display unit shuts down due to power supply abnormality, the third display unit takes over to display the necessary image, ensuring both display panel protection and continuous field of view for driver safety
Solution Approach 2:
The third display unit acts as an intermediary backup system. It receives and displays images from the first or second display units when they fail, serving as a mediator that maintains the field of view function while allowing the primary display units to be protected through shutdown
2Object-affected harmful factors
If multiple display units are used to ensure field of view, then safety is improved, but device complexity increases
Solution Approach 1:
The third display unit is designed with multi-functionality, capable of displaying both its own native images and serving as a backup for the first and second display units. This universal function reduces the need for completely separate backup systems, thereby managing complexity while ensuring safety
Data Source
AI summary
A vehicle display device includes a first display unit disposed in a first portion of a vehicle and including a first display panel to display a first image and a first power supply to supply a first power supply voltage to the first display panel, the first power supply configured to detect an abnormality of a signal output to the first display panel to generate a first shut-down control signal; a second display unit disposed in a second portion of the vehicle and including a second display panel to display a second image and a second power supply to supply a second power supply voltage to the second display panel, the second power supply configured to detect an abnormality of a signal output to the second display panel to generate a second shut-down control signal; a third display unit disposed in a third portion of the vehicle and configured to display a third image or at least one of the first and second images; and a controller to receive first image data corresponding to the first image, second image data corresponding to the second image, and third image data corresponding to the third image to provide the received first image data, the received second image data, and the received third image data to the first display unit, the second display unit, and the third display unit, respectively. The controller is configured to supply the first image data to the third display unit in response to the first shut-down control signal, and to supply the second image data to the third display unit in response to the second shut-down control signal.