Display Panel Frame Rate Adjustment via Dual Line Gating
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Solution Overview
Problem
Display devices with operating frequencies of 60 Hz or less struggle to stably reproduce content with frame rates of 120 Hz or more, requiring a method to adjust content and graphics to match higher frame rates for smooth playback.
Innovation Solution
A display device with a processor that adjusts the resolution and size of content and graphics to match a higher frame rate, using dual line gating mode to drive the display panel with twice the original frame rate, allowing for stable output of graphics even when the display device operates at a lower frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display panel operates at a first frame rate (60 Hz or less), then the operating frequency requirement is met, but high frame rate content (120 Hz or more) cannot be stably reproduced
Solution Approach 1:
The display panel's frame rendering is segmented into multiple sub-frames. Specifically, one frame image is divided into first and second frame images, which are rendered in alternating intervals. This segmentation allows the display panel operating at 60 Hz to effectively display content with 120 Hz or higher frame rates by alternating between two rendered frames, thereby stabilizing high frame rate content reproduction without requiring the panel to physically operate at the higher frequency.
2Productivity
If the resolution of content is adjusted to a second resolution, then the frame rate can be doubled, but the manufacturing precision of the display output may be affected
Solution Approach 1:
The system dynamically adjusts the rendering strategy based on the frame rate of the input content. When high frame rate content (120 Hz or more) is detected, the processor switches to the dual frame rendering mode where one frame image is alternately rendered as first and second frame images. This dynamic adaptation allows the system to optimize for high frame rate reproduction while maintaining appropriate image quality through intelligent frame selection and alternating display, rather than simply downsampling all content.
3Productivity
If graphics size is adjusted to correspond to the second resolution, then graphics can be displayed at higher frame rates, but the complexity of the display system increases
Solution Approach 1:
The processor performs preliminary rendering of frame images at the target resolution before they are displayed. By pre-rendering the first and second frame images from the input frame image at the appropriate resolution and format, the system prepares the graphics data in advance for high frame rate display. This preliminary action simplifies the real-time processing requirements during actual display operation, as the alternating frame display can directly use the pre-prepared rendered images without requiring complex real-time manipulation.
Data Source
AI summary
A display device includes a content receiver receiving content having a first resolution, a display panel being drivable at a first frame rate with respect to the first resolution, a memory storing one or more instructions, and a processor configured to execute the one or more instructions stored in the memory to adjust a resolution of the content to a second resolution, adjust a size of graphics such that the graphics generated to correspond to the first resolution corresponds to the second resolution, synthesize the content having the second resolution and graphics having an adjusted size, and control the display panel to display a synthesized image at a second frame rate that is greater than the first frame rate.