Display Device Automatic Image Verification via Superimposed Pattern
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Solution Overview
Problem
Current display devices, such as escape route indicator lights, lack an automatic method to verify if the displayed image matches the instructed image, leading to potential errors or defects that are difficult to detect without manual visual inspection.
Innovation Solution
Incorporating detection means, such as brightness or color sensors, to capture and compare specific identifiers within the displayed image with reference values, allowing for an automatic check of whether the correct image is being displayed, and reporting any discrepancies through signaling means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If current detection alone is used to verify display correctness, then the detection method is simple, but it cannot unequivocally determine whether an error is present since different images can produce identical power consumption
Solution Approach 1:
The patent introduces an additional pattern as an intermediary element that is superimposed on the image to be displayed. This additional pattern serves as a mediator that modifies the optical properties of the displayed image without altering the underlying information content, enabling optical detection methods to distinguish between different images that would otherwise consume identical power.
Solution Approach 2:
The patent utilizes color or brightness changes by superimposing an additional pattern with distinct optical characteristics onto the displayed image. This additional pattern creates detectable variations in color or brightness that allow optical sensors to differentiate between different images, resolving the ambiguity that arises when different images produce identical power consumption.
2Measurement precision
If additional pattern is superimposed on the image to differentiate images with identical power consumption, then image distinguishability improves, but the displayed image may not accurately represent the intended image
Solution Approach 1:
The patent segments the displayed image into two distinct components: the original image to be displayed and the additional pattern superimposed thereon. The detection system is designed to detect only the additional pattern while ignoring the original image content, allowing for accurate verification without compromising the integrity or accuracy of the displayed information.
Solution Approach 2:
The patent implements a feedback mechanism where the detection means continuously monitor the displayed image for the presence of the additional pattern, and the control means adjust the display based on the detection results. This closed-loop feedback ensures that the displayed image accurately represents the intended image while still enabling reliable detection through the superimposed pattern.
3Device complexity
If manual visual inspection is used to verify escape route indicators, then no additional detection means are required, but the inspection process requires great effort and time
Solution Approach 1:
The patent enables the display device to perform self-verification by incorporating detection means that automatically detect the additional pattern superimposed on the displayed image. This self-service capability eliminates the need for manual visual inspection, allowing the system to autonomously verify whether the correct escape route indicator is being displayed, thereby dramatically improving inspection efficiency.
Solution Approach 2:
The patent replaces the mechanical process of manual visual inspection with an automated optical detection system. The detection means use optical fields to detect the additional pattern, substituting the human visual inspection process with an automated sensor-based system that can rapidly and accurately verify display correctness without human intervention.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables an automatic and efficient verification of the displayed image, ensuring accurate representation of escape route indicators or signs, reducing the effort required for manual inspections and improving operational reliability.
Implementation Method 1
The displayed image or part of the displayed image is detected in that the at least one detection means is a brightness sensor or a color sensor
Implementation Method 2
The displayed image or part of the displayed image is detected in that the at least one detection means is a brightness sensor or a color sensor
Data Source
Figure 1a
Figure 1b
Figure 1c
AI summary
The invention relates to a display device for displaying images, in particular pictograms, comprising: - an image memory in which image data from various images can be stored, - a display means (A) for displaying one of the stored images, - a processing means by which image data of one of the stored images can be read from the image memory and converted into an electrical signal for controlling the display means to display the image, and - an input for reading the instruction for selecting the image to be read from the image memory and displayed by the display means, - wherein the display device has at least one detection means (S1 to S4) by which information can be detected from the displayed image or the electrical signal for controlling the display means (A) to display the image, and - the display device has at least one comparison means.- with which the information about the displayed image captured by the at least one acquisition device (S1 to S4) is comparable on the one hand to • the instruction read in via the input or • information contained in the instruction or • the stored image data or • information stored with and associated with the image data on the other hand.