Display Apparatus Viewing Angle Compensation
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Solution Overview
Problem
Large display apparatuses, such as digital signage, suffer from image deterioration due to viewing angle issues, particularly when installed at an angle, making it difficult to maintain uniform image quality across the screen, especially in public areas where user distribution varies.
Innovation Solution
A display apparatus equipped with sensors and a processor that identifies concentrated viewing positions and adjusts image quality by dividing the screen into areas based on viewing angles, using a look-up table to compensate for luminance, color gamut, gamma, white balance, sharpness, or contrast, ensuring enhanced image quality for users regardless of installation direction or inclination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display apparatus is installed at an angle to enhance visibility, then the visibility is improved, but image quality deterioration occurs due to viewing angle
Solution Approach 1:
The patent divides the screen into multiple areas and applies different image quality compensation settings to each area based on its viewing angle characteristics. This allows the display to maintain uniform image quality across all areas even when installed at an angle, resolving the contradiction between visibility enhancement and image quality maintenance.
Solution Approach 2:
The system dynamically adjusts image quality parameters such as luminance, color gamut, gamma, white balance, sharpness, and contrast based on the identified concentrated viewing position and area characteristics. By changing these parameters locally for each screen area, the system compensates for viewing angle effects while maintaining overall visibility enhancement.
2Ease of manufacture
If the display apparatus uses a fixed installation angle, then installation simplicity is maintained, but image quality cannot be optimized for different viewing positions
Solution Approach 1:
The patent implements dynamic image quality compensation that automatically adapts to the actual installation angle and concentrated viewing position. The system uses sensors to detect the installation state and continuously adjusts compensation parameters without requiring manual reconfiguration, thereby maintaining installation simplicity while achieving image quality optimization for the actual viewing conditions.
Solution Approach 2:
The system uses sensors to detect the installation angle and concentrated viewing position, then feeds this information back to the processor which adjusts the image quality compensation accordingly. This closed-loop feedback mechanism allows the display to automatically optimize image quality for the actual installation configuration without complicating the installation process.
3Reliability
If the display apparatus divides the screen into multiple areas for compensation, then image quality is improved, but device complexity increases
Solution Approach 1:
The patent divides the screen into multiple areas to apply different compensation settings, which improves image quality uniformity. However, the segmentation is implemented through software processing rather than physical hardware division, reducing the actual device complexity while achieving the desired image quality improvement.
Solution Approach 2:
The system uses a look-up table as an intermediary to store pre-calculated compensation parameters for different screen areas and viewing conditions. This intermediary structure simplifies the processing complexity by providing ready-made compensation values that the processor can directly apply, reducing the computational burden while maintaining image quality improvement.
Data Source
AI summary
The disclosure relates to a display apparatus, a control method and a recording medium, the display apparatus including: a display; an information obtaining part; and a processor configured to: obtain an information on a plurality of viewing positions of a plurality of users regarding a screen of the display by the information obtaining part, identify a viewing position, on which a distribution is concentrated, among the plurality of viewing positions based on the obtained information, and control to compensate an image quality of an area corresponding to the identified viewing position among a plurality of areas of the screen based on a viewing angle at the identified viewing position.