Vehicle Display Brightness Screening for Corrupted Video Streams
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Solution Overview
Problem
Existing vehicle display systems are vulnerable to video stream corruption, which can disrupt user operation during critical maneuvers, posing serious material and human safety risks.
Innovation Solution
A method for securing a vehicle display system by controlling brightness levels of video streams, inhibiting display if criteria are not met, and replacing corrupted streams with error messages or black screens, while mixing streams if possible.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If video stream is displayed on the display screen, then the user receives visual information, but the user may be disrupted if the video stream is corrupted
Solution Approach 1:
The patent applies preliminary action by calculating the brightness level of the video stream before it is displayed on the screen. The processing module computes the average brightness of all pixels in the video stream data, and only if this brightness meets a predefined criterion (is below a threshold) does the system proceed to display the video. This pre-check prevents corrupted or excessively bright video content from reaching the display, thereby avoiding user disruption while maintaining information delivery.
Solution Approach 2:
The patent introduces an intermediary processing module that acts as a mediator between the video stream source and the display screen. This module calculates brightness levels and determines whether the video stream should be displayed based on predefined criteria. If the video stream fails the brightness criterion, the intermediary blocks it from being displayed, thus protecting the user from potentially harmful or disruptive content while still allowing valid video streams to pass through.
2Reliability
If brightness level checking is performed on video streams, then user safety is improved, but system complexity increases
Solution Approach 1:
The patent applies self-service by having the processing module automatically calculate the brightness level of the video stream using the existing video data without requiring external intervention or complex additional hardware. The brightness calculation is performed by processing the pixel values already present in the video stream data, and the system automatically compares this calculated brightness against a predefined threshold to make display decisions, eliminating the need for manual brightness adjustment or complex external control systems.
Solution Approach 2:
The patent changes the parameter being monitored from complex video content analysis to a simple brightness level parameter. By calculating the average brightness of all pixels in the video stream and comparing this single scalar value against a predefined threshold, the system achieves reliable safety checking with minimal processing complexity. This parameter transformation simplifies the decision-making process while maintaining effective control over display safety.
Data Source
AI summary
The object of the invention is a method for securing a vehicle comprising a critical system including a display, the method comprising the following steps:acquisition of at least one video stream to be shown on the display;calculation of a brightness level of the or each video stream;if the brightness level of the video stream(s) meets a predefined criterion, then the video stream is displayed on the display;otherwise, display of the video stream is inhibited.