Adaptive Display Control for User Distance and Field of View
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Solution Overview
Problem
Large-screen display devices pose challenges in ensuring that users with varying heights can view the entire display surface, as users closer to the screen may not have a field of view that covers the entire active area, complicating debugging and user experience.
Innovation Solution
A control method and apparatus for display devices that adjust the display state based on user distance, determining whether to enter a local display state or full-screen state, and adjust image resolution and center coordinates to ensure the image is within the user's field of view, using a combination of distance sensors and spatial position information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display screen displays full-screen image data to ensure the entire active area is visible, then the coverage area is improved, but users closer to the screen cannot view the entire display surface within their field of view
Solution Approach 1:
The patent applies dynamics by making the display state adjustable between full-screen and local display modes based on real-time detection of user distance. The control apparatus dynamically switches display configurations: when the user is far away, full-screen display is used to maximize coverage; when the user is close, local display is activated to ensure the entire image fits within the user's field of view. This dynamic adaptation resolves the contradiction between coverage area and viewing comfort.
2Ease of operation
If the display screen enters local display state to ensure the image fits within the user's field of view, then viewing comfort is improved, but the display coverage area is reduced
Solution Approach 1:
The system dynamically adjusts between local and full-screen display modes based on detected user distance. When the user is detected to be close to the screen, local display mode is activated to ensure comfortable viewing within the field of view. When the user moves away, the system switches to full-screen mode to maximize coverage. This dynamic switching resolves the area-loss contradiction by making the display state adaptive rather than fixed.
3Area of stationary object
If the display device uses fixed full-screen display mode, then the display coverage area is maximized, but debugging complexity increases due to inability to accommodate users with varying heights
Solution Approach 1:
The patent applies self-service by implementing automatic detection of user distance and autonomous switching between display modes. The control apparatus uses distance sensors to detect user position and automatically adjusts the display state without requiring manual intervention or complex debugging procedures. This self-adjusting capability eliminates the need for manual configuration and accommodates users with varying heights automatically, resolving the debugging complexity issue while maintaining full-screen display benefits.
Data Source
AI summary
A control method for a display device includes: receiving a user distance, and determining whether the user distance is smaller than a preset distance: if so, transmitting a first control command to a display screen to control the display screen to enter a local display state, and a second control command to a player to control the player to output local image data; receiving the local image data; and transmitting the local image data to the display screen. The user distance is a distance from the user to a reference surface in a direction perpendicular to the reference surface, and the reference surface is a display surface of the display screen or a plane parallel to the display surface. The preset distance is a minimum distance from the user to the reference surface in a case where the field of view of the user covers the entire active area.