Alpha-Blending Display Signal Transmission Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing display apparatuses face inefficiencies in transmission efficiency of display signals between components due to the need to transmit all graphic and video signals for each pixel during alpha-blending, especially in high-resolution displays like full HD, which results in increased data transmission requirements.
Innovation Solution
A display apparatus and method that calculates effective bits of data for alpha-blending based on the alpha value of each pixel, reducing data transmission by using the expression (α×M)+(1−α)×N, where α is the alpha value, M is the bits per color of the graphic signal, and N is the bits per color of the video signal, and includes an input device, calculator, and alpha-blender to perform alpha-blending efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all display signals for respective pixels are transmitted when performing alpha-blending, then the alpha-blending function can be fully implemented, but the transmission efficiency of display signal between components is reduced
Solution Approach 1:
The patent extracts and transmits only the necessary effective bits of data for alpha-blending based on the alpha value, rather than transmitting all display signal data. When alpha value is 0, only video signal effective bits are transmitted; when alpha value is maximum, only graphic signal effective bits are transmitted; for intermediate values, a calculated portion of both signals is transmitted.
Solution Approach 2:
The patent changes the parameter of data transmission by calculating effective bits based on the alpha value using the formula (α×M)+(1−α)×N, where α is the alpha value, M is bits per color of graphic signal, and N is bits per color of video signal. This dynamic adjustment of transmission data quantity resolves the contradiction between maintaining blending functionality and improving transmission efficiency.
2Manufacturing precision
If all graphic signals and video signals are transmitted for high-resolution display, then the image quality is maintained, but the data transmission amount increases
Solution Approach 1:
The patent extracts only the effective bits of data needed for alpha-blending at each resolution level, removing redundant data transmission. This maintains the necessary image quality for high-resolution displays while significantly reducing the total data transmission amount by transmitting only what is needed based on the alpha value.
Solution Approach 2:
The patent dynamically adjusts the data transmission quantity parameter based on the alpha value and display resolution, calculating effective bits using (α×M)+(1−α)×N. This allows the system to maintain high image quality when needed while reducing data transmission volume, resolving the contradiction between image quality and data quantity.
3Productivity
If the transmission amount of data is reduced for alpha-blending, then the transmission efficiency is improved, but the complexity of calculating effective bits increases
Solution Approach 1:
The patent introduces a mathematical formula (α×M)+(1−α)×N to calculate effective bits, which systematically determines the exact number of bits to transmit based on the alpha value. While this adds calculation logic, the formula is straightforward and can be efficiently implemented in hardware or software, achieving a balance between transmission efficiency improvement and calculation complexity.
Data Source
AI summary
A display apparatus and a method of controlling the same are provided. The display apparatus includes an input device configured to receive a display signal including a video signal, a graphic signal, and an alpha value, a calculator configured to calculate effective bits of data of the video signal and the graphic signal, the effective bits of data being used to perform alpha-blending based on an alpha value of each pixel from the display signal, an alpha-blender configured to perform alpha-blending on the display signal by using the effective bits of data calculated by the calculator and the alpha value, and a display configured to display an image generated according to the alpha-blended display signal.