Display Panel Aspect Ratio Adjustment Without Frame Buffer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional displays experience image timing delays when adjusting the aspect ratio of a displayed image, leading to reduced visual experience and visual fatigue due to asynchronous video stream information.
Innovation Solution
A display system comprising a display panel, gate driving circuit, data driving circuit, logical board, backlight driving circuit, and chip processor, which generates a second displayed image range by enabling pixels within the new range and disabling those outside, optimizing image color tones by aligning with backlight grid lines, thus avoiding the need for a scalar frame buffer memory.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional display adjusts the aspect ratio of the displayed image using internal processor and frame buffer memory, then the aspect ratio adjustment capability is achieved, but image timing delay occurs
Solution Approach 1:
The patent extracts the image timing delay problem by removing the frame buffer memory and scaling process from the system. Instead of buffering video data and performing scaling operations in the display device, the invention directly maps pixels within the second displayed image range to the display panel, eliminating the time-consuming intermediate processing steps while maintaining aspect ratio adjustment capability.
Solution Approach 2:
The patent segments the displayed image into two distinct ranges: a first displayed image range that maintains the original aspect ratio, and a second displayed image range that adapts to the display panel's native resolution. By dividing the image processing into these segments and selectively mapping pixels, the system achieves aspect ratio adjustment without requiring full-frame buffering and scaling operations.
2Shape
If the aspect ratio is adjusted using conventional methods, then the displayed image fits the screen, but video stream information becomes delayed or asynchronous
Solution Approach 1:
The patent performs preliminary action by pre-defining the mapping relationship between the first displayed image range and the second displayed image range before video playback. The chip processor receives the first displayed image range information and generates the corresponding second displayed image range in advance, establishing pixel mapping rules beforehand. This preliminary setup ensures that during video playback, pixels can be directly driven without real-time buffering delays, maintaining video stream synchronization.
3Manufacturing precision
If scaling process is performed to adjust aspect ratio, then the image fits the display resolution, but image timing delay occurs
Solution Approach 1:
The patent replaces the mechanical scaling process with a direct pixel mapping system. Instead of using the internal processor to perform computationally intensive scaling operations on buffered images, the invention substitutes this with a coordinate-based mapping mechanism where the chip processor directly maps pixels from the first displayed image range to the second displayed image range based on pre-established relationships, eliminating the time-consuming scaling operation while maintaining precise image resolution matching.
Data Source
AI summary
A method for adjusting the aspect ratio of a displayed image includes setting a first displayed image range, selectively adjusting the size of the first displayed image range to generate a second displayed image range, driving a plurality of pixels inside the second displayed image range of a display panel to display an image, and disabling a plurality of pixels outside the second displayed image range of the display panel.