Display System Automatic Image Area Detection
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Solution Overview
Problem
Conventional display systems for security monitoring cameras in elevators struggle to automatically determine the effective image area and adjust display size and position correctly, especially when the lighting device is turned off, leading to inappropriate display settings and inefficient use of the monitor screen.
Innovation Solution
A display system that automatically determines the effective image area by receiving a lighting signal and adjusts display size and position only when the lighting is on, using an image processor with an effective-image-area determination unit and image control processor to eliminate non-image areas, ensuring accurate display settings even in low-light conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If automatic boundary determination is implemented using conventional techniques, then the display mode can be automatically selected, but the system sets inappropriate display modes when the lighting device is turned off
Solution Approach 1:
The system introduces feedback by checking lighting device status before performing boundary determination. The lighting controller provides feedback about the lighting state, and the image processing device uses this feedback to decide whether to execute boundary determination, thereby avoiding incorrect settings when lighting is off
Solution Approach 2:
The lighting controller acts as an intermediary between the lighting device and the image processing device. It provides lighting status information to the image processing device, enabling the system to make informed decisions about boundary determination based on actual lighting conditions
2Measurement precision
If manual adjustment of image display size and position is required, then technicians can precisely set the display, but the process becomes time-consuming and labor-intensive
Solution Approach 1:
The system performs self-service by automatically determining the boundary between effective image area and non-image area, and automatically selecting the appropriate display mode without requiring technician intervention. This eliminates manual adjustment while maintaining accurate display positioning
Solution Approach 2:
The patent replaces manual mechanical adjustment with an automated image processing system that uses algorithms to detect boundaries and calculate optimal display parameters, substituting human operation with computational processing
3Use of energy by moving object
If the lighting device is turned off to save power, then energy consumption is reduced, but the automatic boundary determination fails and displays incorrect images
Solution Approach 1:
The system dynamically adapts its behavior based on lighting conditions. When lighting is on, automatic boundary determination is performed; when lighting is off, the system skips boundary determination. This dynamic adjustment allows the system to maintain energy savings while preserving automatic display functionality when conditions permit
Data Source
AI summary
A display system is provided which determines an effective image area by automatically detecting a boundary between the effective image area and a non-image area created owing to the difference between the pixel numbers of the camera image sensor and television signal, to thereby display the images on a monitor by adjusting a display size and position suitable for the effective image area, whereby an inappropriate display size and position are avoided from being set while a lighting device for illuminating a camera's field of vision is off. The display system receives a signal notifying about activation of the lighting device from the lighting controller that provides on/off control of the device; the system then determines the effective image area if the device is on, and does not if it is off.