LED Panel Double-Buffer Refresh for Asynchronous Image Transfer
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Solution Overview
Problem
Traditional LED display systems require significant memory resources and are costly, especially for large screens, and existing solutions are not efficient for asynchronous operation.
Innovation Solution
A controller system with a data transfer unit and a refresh processor, both synchronized by a shared clock or handshake protocol, uses minimal memory by alternating buffer usage and efficient data transfer to refresh LED displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional LED display systems use large memory resources to store image data for display, then the display can operate, but the system becomes costly and complex, especially for large screens
Solution Approach 1:
The system divides the image data into multiple scanout buffers (first scanout buffer and second scanout buffer), each storing data for specific portions of the display. This segmentation allows the system to process and display image data in smaller chunks, eliminating the need for a single large memory resource while maintaining continuous display operation.
Solution Approach 2:
The system dynamically switches between different scanout buffers during operation. The buffer management unit alternates between the first and second scanout buffers, loading new image data into one buffer while displaying from the other. This dynamic buffer switching enables continuous display without requiring all data to be stored in memory simultaneously, reducing overall memory requirements.
2Quantity of substance
If traditional LED display systems use large memory resources, then sufficient data storage is available, but the system cost increases significantly
Solution Approach 1:
By segmenting the display into multiple scanout buffers that can be independently managed, the system reduces the total memory capacity required. Instead of needing one large buffer to store entire image data, the system uses multiple smaller buffers that are alternated between, significantly reducing the overall memory cost while maintaining adequate data storage for display operations.
Solution Approach 2:
The system discards old image data from the currently active buffer and recovers it by switching to the other buffer that contains the previously displayed data. This buffer switching mechanism allows the system to reuse memory space efficiently, eliminating the need for continuously large memory resources and reducing system cost.
3Adaptability or versatility
If traditional LED display systems are designed for synchronous operation, then coordination is simplified, but they cannot efficiently perform asynchronous operation
Solution Approach 1:
The system implements dynamic buffer switching capability that enables asynchronous operation. The buffer management unit can switch between scanout buffers independently of the display refresh cycle, allowing image data to be loaded and processed asynchronously. This dynamic switching mechanism provides flexibility for different operation modes while maintaining manageable control through standardized buffer management procedures.
Data Source
AI summary
The present teaching relates to method, system, medium, and implementations for LED display. A first signal is received that signals a timing for a next data transfer. In response to the first signal, a bit-based image block stored in a memory is transferred, via a bus connected thereto, to one of a pair of alternate buffers pointed to by a write buffer pointer, which is subsequently toggled to point to another of the pair of alternate buffers. A second signal is received that signals a timing for refreshing the LED display. In response to the second signal, the bit-based image block is retrieved from the one of the pair of alternate buffers pointed to by a read buffer pointer, which is then toggled to point to the other of the pair of alternate buffers. The lights of the LED display are then refreshed in accordance with control signals generated based on the bit-based image block.