Display Apparatus Link Calibration for Consistent Image Hue
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Solution Overview
Problem
High-definition medical monitors face challenges in maintaining consistent display characteristics when switching between external input images and single-unit display images, particularly when the connected PC changes or settings are modified, leading to differences in image hue and other display parameters.
Innovation Solution
A display apparatus equipped with a measuring unit, determining units for single and link calibration, and a control method that adjusts display settings to match target values by executing single unit and link calibrations using pre-stored calibration images and external calibration signals, ensuring consistency between external input and single-unit display images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If link calibration is performed to match external input image characteristics, then display characteristic consistency improves, but calibration complexity increases
Solution Approach 1:
The system performs single-unit calibration in advance to establish baseline display characteristics before link calibration with external devices. This preliminary calibration creates a reference state that simplifies subsequent link calibration processes by providing a known starting point for matching external input characteristics.
Solution Approach 2:
The system measures actual display characteristics using a measuring unit and compares them against target values, then automatically adjusts display settings based on the measured deviations. This closed-loop feedback mechanism ensures consistent display characteristics across different external devices without requiring manual calibration adjustments.
2Manufacturing precision
If calibration is performed frequently to maintain display consistency, then image quality improves, but processing time increases
Solution Approach 1:
The system performs calibration periodically based on triggering events such as connection of external devices, changes in display settings, or elapsed time thresholds, rather than continuously or at fixed intervals. This event-driven periodic calibration maintains image quality while minimizing unnecessary calibration operations that would consume processing time.
Solution Approach 2:
The system automatically detects when calibration is needed by monitoring connection status, setting changes, and time elapsed since last calibration, then autonomously performs calibration without requiring user intervention. This self-service approach ensures timely calibration for quality maintenance while eliminating manual calibration time overhead.
3Adaptability or versatility
If display settings are adjusted to match external PC characteristics, then compatibility improves, but single-unit display characteristic consistency deteriorates
Solution Approach 1:
The system maintains separate calibration profiles and display settings for single-unit operation and external device connection modes. When an external device is detected, the system switches to link calibration mode with appropriate settings; when operating alone, it uses single-unit calibration settings. This segmentation allows each mode to be optimized independently without compromising the other.
Solution Approach 2:
The system dynamically switches between different calibration modes and display settings based on the operational state - whether connected to an external device or operating as a standalone unit. This dynamic adaptation ensures optimal display characteristics for each mode while maintaining overall system consistency through automated state detection and profile switching.
Data Source
AI summary
A display apparatus according to the present invention includes: a measuring unit that measures an image displayed on a screen; a first determining unit that determines a first display setting by executing a single unit calibration; a second determining unit that determines a second display setting by executing a link calibration; and a determining unit that determines, during display of an external input image, which is an image based on an image signal input from an external apparatus, whether or not an output setting of the external apparatus or the second display setting differs from a setting during display of a previous external input image. The second determining unit executes the link calibration when the determining unit determines that the output setting of the external apparatus or the second display setting differs from the setting during display of the previous external input image.