Overdrive Technique for Electronic Display Transition Response
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Solution Overview
Problem
In pixel-based display panels, such as OLEDs, the initial response to post-transition settings often does not correspond to the intended settings, resulting in content being displayed with incorrect visual characteristics for several frames before aligning with the desired post-transition settings.
Innovation Solution
An overdrive technique is employed to modify one or more frames of content by determining a compensated current frame value corresponding to a second luminance, allowing the display to show the second frame using this value, thereby ensuring a closer match to the post-transition settings from the initial frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If conventional display transition is used, then the display shows content for several frames before matching post-transition settings, but this results in delayed response time and incorrect initial visual characteristics
Solution Approach 1:
The patent applies preliminary action by modifying the current frame data before display to anticipate the desired post-transition state. The system determines a modified current frame value that, when displayed, causes the pixels to transition more quickly toward the target post-transition luminance, rather than waiting for natural gradual transition.
Solution Approach 2:
The patent changes the parameter of frame data values by determining a modified current frame value that corresponds to a higher luminance than the original current frame value. This parameter modification accelerates the pixel transition by pushing the luminance closer to the target post-transition state in the current frame display.
2Speed
If the display transitions quickly to post-transition settings, then response time is reduced, but the initial frame may not correspond to the intended settings
Solution Approach 1:
The patent applies partial or excessive action by setting the modified current frame value to correspond to a luminance that is greater than the actual current frame luminance. This excessive luminance push accelerates the transition by overshooting slightly, allowing the display to reach the target post-transition state faster while still maintaining control over the final accuracy.
Solution Approach 2:
The system uses feedback by determining the modified current frame value based on both the pre-transition value and the post-transition value. This feedback mechanism allows the system to calculate an optimal intermediate value that balances transition speed with accuracy, using information about the desired end state to guide the current frame modification.
Data Source
AI summary
An electronic device is provided. The electronic device includes a display that is configured to show content that includes a plurality of frames. The plurality of frames includes a first frame that is associated with a pre-transition value. The plurality of frames also includes a second frame that is associated with a current frame value that corresponds to a first luminance. Additionally, the electronic device is configured to determine an overdriven current frame value corresponding to a second luminance that is greater than the first luminance. The electronic device is also configured to display the second frame using the overdriven current frame value.