Active Receiver Card Video Decoding for Low-Latency LED Tiles
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Solution Overview
Problem
Traditional video processing systems for LED displays face challenges with high cost, latency, and complexity due to the need for expensive high-bandwidth transmissions and centralized processing, which often result in pixel and frame artifacts.
Innovation Solution
A video processing system using an active receiver card with a processor to decode serialized video data directly at each LED tile, allowing decentralized processing and asymmetric communication, reducing latency and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If centralized video processing with high-bandwidth transmission is used, then video quality is maintained, but system cost and complexity increase
Solution Approach 1:
The patent divides the centralized video processing system into distributed processing units located at each LED tile. Each tile contains a receiver card with video processing capability, allowing local decoding and processing of video data. This segmentation eliminates the need for complex centralized processing while maintaining video quality, as each tile independently processes its assigned video segments.
Solution Approach 2:
The patent introduces a new dimension of processing by placing active receiver cards directly at each LED tile rather than relying on centralized processing. This spatial redistribution transforms the system architecture from a single-point processing model to a distributed mesh topology, reducing transmission bandwidth requirements while preserving video quality through local processing.
2Manufacturing precision
If centralized processing is used, then video data is processed uniformly, but latency increases
Solution Approach 1:
The patent segments the video processing function across multiple independent receiver cards distributed at each LED tile. Each receiver card processes video data locally without waiting for centralized processing, thereby eliminating transmission delays and reducing frame latency while maintaining consistent processing standards through standardized receiver card designs.
Solution Approach 2:
Each LED tile with its integrated receiver card becomes self-sufficient in processing its assigned video data. The receiver cards autonomously decode and process video streams locally, eliminating dependence on centralized processing and thereby reducing latency. This self-service approach allows parallel processing across multiple tiles simultaneously.
3Manufacturing precision
If high-bandwidth transmission is implemented, then video quality is preserved, but system cost increases
Solution Approach 1:
The patent segments the video data stream into smaller portions that can be transmitted to individual LED tiles over lower-bandwidth connections. Each receiver card processes only its assigned segment locally, eliminating the need for high-bandwidth transmission to all tiles. This segmentation allows standard Ethernet cables to suffice, reducing infrastructure costs while preserving video quality through local processing.
Solution Approach 2:
The patent extracts the video processing function from the transmission system and relocates it to the display tiles themselves. By taking out the processing burden from the communication infrastructure, the system can use lower-bandwidth transmission media while maintaining video quality, as processing occurs locally at each tile rather than requiring high-speed data delivery to all tiles.
4Loss of time
If decentralized processing is implemented, then latency is reduced, but processing complexity at each node increases
Solution Approach 1:
The patent uses identical receiver card designs across all LED tiles, copying the same processing architecture to each node. This standardization simplifies the complexity at each node, as every tile uses the same proven design rather than requiring unique processing solutions. The copied architecture ensures consistent performance while maintaining low latency through distributed processing.
Data Source
AI summary
An active receiver card for a display is provided. The active receiver comprises a processor, and at least one interface, configured to receive a broadcast serialized video data stream as input from a video processing system. The active receiver card is configured to be electrically connected to a tile of a display. The processor of the active receiver card is configured to extract from the received broadcast serialized video data stream video image data pertaining to the tile of the display, and based thereon, the active receiver card is configured to output the control signals used to control a plurality of pixels of the tile of the display. The display is configured to receive a first video stream and a second video stream for the at least one interface.