Display Apparatus HDR SDR Transition Control
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Solution Overview
Problem
Display apparatuses experience perceptible transitions when switching between high dynamic range (HDR) and standard dynamic range (SDR) content, disrupting user experience due to sudden changes in output settings.
Innovation Solution
A display apparatus and control method that gradually transition between HDR and SDR output settings by changing parameters such as maximum screen brightness, gamma curve, and color space over a predetermined frame section or period, based on stored values and content type identification using video usability information and supplemental enhancement information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the display apparatus changes output settings suddenly when switching between HDR and SDR content, then the transition is quick and efficient, but the user perceives the change as abrupt and unpleasant
Solution Approach 1:
The patent segments the transition process by dividing the output setting change into multiple discrete steps or stages. Instead of a single abrupt change, the display apparatus applies a series of incremental adjustments to parameters such as maximum screen brightness, gamma curve, and color space, making the transition gradual and less perceptible to users.
Solution Approach 2:
The patent implements dynamic adjustment of display parameters during the transition period. The output settings are modified in real-time based on the progression of the transition, allowing the display apparatus to adaptively change brightness, contrast, and color characteristics smoothly rather than maintaining static settings throughout the switch.
2Object-affected harmful factors
If the display apparatus gradually transitions between HDR and SDR output settings, then user experience is improved, but the transition process takes longer time
Solution Approach 1:
The patent applies partial action by implementing gradual transitions only when necessary (during content type switching) rather than continuously. The system determines when transitions are needed based on content metadata and user preferences, applying incremental changes only during these specific moments to balance smooth transitions with time efficiency.
Solution Approach 2:
The patent changes multiple display parameters simultaneously during the transition process, including maximum screen brightness, gamma curve values, and color space definitions. By coordinating changes across these different parameters, the system achieves a comprehensive smooth transition that maintains visual quality while managing the overall transition duration.
3Manufacturing precision
If the display apparatus adjusts multiple output parameters (brightness, gamma, color space) during transition, then the quality of transition is improved, but the complexity of control increases
Solution Approach 1:
The patent prepares transition data and parameter settings in advance by storing reference information for both HDR and SDR content types. The display apparatus pre-configures the sequence of parameter adjustments based on the target content type, so that when a transition is needed, the system can execute the pre-planned sequence without complex real-time calculations, reducing control complexity while maintaining transition quality.
Solution Approach 2:
The patent implements feedback mechanisms to monitor the transition process and adjust parameters accordingly. The system tracks the current state of display parameters and compares them against the target state, making incremental adjustments based on the progress achieved. This feedback loop ensures high transition quality while simplifying control by using reactive rather than purely predictive adjustments.
Data Source
AI summary
A display apparatus may include a display, a storage configured to store a first output setting value corresponding to high dynamic range (HDR) content and a second output setting value corresponding to standard dynamic range (SDR) content, a communicator, and a processor configured to, while a first content is streamed through the communicator and displayed based on one of the first output setting value and the second output setting value that corresponds to the first content and in response to a second content being streamed through the communicator, control the display to change one of the first output setting value and the second output setting value to the other in phases and display the second content, and the first content may be one of the HDR content and the SDR content, and the second content may be the other of the HDR content and the SDR content.