4-Way Dual Scanning Display Board with Gray Scale Pixel Correction
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Solution Overview
Problem
Existing LED electronic display boards face challenges in displaying high-definition images due to limitations in transmission speed and display size, often resulting in image noise, distortion, and flicker phenomena, especially when handling ultra-high-definition images.
Innovation Solution
An electronic display board employing a 4-way dual scanning control with a gray scale pixel (GSP) applied to a dynamic image correction technology (DICT), utilizing a main control unit (MCU) and server control unit (SCU) to process and display images in a 4-way format, ensuring high-resolution and noise-free image transmission through gamma correction and histogram equalization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the electronic display board increases transmission speed of image data to display high-brightness and high-efficiency ultra-high-definition images, then the display efficiency and brightness are improved, but image noise phenomena such as interruption of image, distortion of display image quality, and flicker phenomena occur
Solution Approach 1:
The image data transmission is divided into multiple scanning periods, with different gray scale values applied to different segments (first scanning period vs. second scanning period). This segmentation allows the system to maintain high transmission speed while reducing image noise by distributing the data load across multiple time segments with different correction parameters.
Solution Approach 2:
The patent applies dynamic image correction technology where gray scale conversion parameters are dynamically adjusted based on the scanning period. The GSP unit dynamically changes gray scale values between first and second scanning periods, allowing the system to adapt to transmission speed requirements while maintaining image quality and reducing noise phenomena.
2Adaptability or versatility
If the electronic display board reduces image resolution to fit the display screen, then the adaptability to display size is improved, but the definition and sharpness of the displayed image deteriorate
Solution Approach 1:
The patent changes the parameter of gray scale values dynamically based on scanning period and position. By adjusting gray scale conversion parameters rather than simply reducing resolution, the system maintains image definition and sharpness while adapting to different display sizes and configurations through 4-way dual scanning.
3Manufacturing precision
If the electronic display board processes more image data bits to achieve high definition, then the image resolution is improved, but the processing speed and transmission capability deteriorate
Solution Approach 1:
The patent implements periodic scanning action with distinct first and second scanning periods. During each period, different gray scale values are applied, allowing the system to process high-resolution image data at manageable speeds by distributing the processing load across periodic cycles rather than requiring simultaneous high-speed processing of all data bits.
Data Source
AI summary
An electronic display board is configured to control 4-way dual scanning in which a gray scale pixel (GSP) is applied to a DICT, wherein an MCU, which is equipped with a GSP function along with driving control and DICT control for easily implementing a high-definition image, can switch, by dual scanning, an image in which an image data value with a gamma value determined on a histogram by (a gamma controller) of an image processing DICT unit including a GSP has been gray-scaled by the GSP to equalize and process the image through gamma correction of the image and the histogram of the brightness of the image, so that the image can be displayed on the electronic display board without noises such as interruption of the image and distortion of the image quality even under the control of image transmission for high-speed processing.