Active Receiver Card for Modular LED Display Latency Reduction
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Solution Overview
Problem
Traditional video processing systems for LED displays face challenges with high latency, complex configuration, and high costs due to centralized processing topologies, which require expensive high-bandwidth transmissions and introduce pixel and frame artifacts.
Innovation Solution
A video processing system that uses a serialized digital video stream to distribute video data directly to LED tiles, allowing each tile to read only the relevant data it needs, reducing the need for centralized processing and enabling more efficient data transmission and processing locally at each tile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If centralized processing topology is used, then video data can be processed and delivered to display, but system latency increases and configuration becomes complex
Solution Approach 1:
The patent segments the centralized processing architecture into distributed processing units at each LED tile. Each tile contains its own receiver card with processing capabilities, allowing local extraction and processing of video data without relying on a centralized processor. This segmentation reduces latency by eliminating data transmission bottlenecks and simplifies configuration by making each tile independently configurable.
Solution Approach 2:
The patent transitions from a single-dimensional centralized processing model to a multi-dimensional distributed architecture where processing occurs at multiple levels: the video processor generates the serialized stream, and receiver cards at each tile independently process relevant portions. This dimensional shift allows parallel processing across multiple tiles simultaneously, reducing overall system latency and distributing configuration complexity.
2Productivity
If high-bandwidth transmission is used, then video data can be delivered to all tiles, but transmission costs increase
Solution Approach 1:
The patent extracts only the necessary video data for each specific tile from the serialized stream at the receiver card level. Instead of transmitting separate high-bandwidth streams to each tile, the system transmits a single serialized stream containing all tile data, and each receiver card extracts only its required portion. This extraction approach maintains high data transmission efficiency while dramatically reducing the bandwidth requirements and associated costs of the transmission infrastructure.
Solution Approach 2:
The patent creates a single master serialized video stream that contains the complete video information for all tiles. This master stream is then distributed to all receiver cards, which each create their own processed output by extracting and decoding the relevant portions. This copying approach eliminates the need for multiple separate high-bandwidth transmission channels, reducing overall transmission costs while maintaining full video quality for each tile.
3Productivity
If centralized processing is used, then video data can be processed, but processing complexity increases
Solution Approach 1:
The patent segments the processing workload from a single centralized processor into multiple distributed receiver cards, one at each LED tile. Each receiver card handles only the processing for its specific tile, extracting and decoding video data locally. This segmentation reduces the processing complexity of any single device while maintaining or enhancing overall system processing capability through parallel operation of multiple receiver cards.
Solution Approach 2:
The patent enables each receiver card to be self-sufficient in processing its own tile's video data. Each receiver card independently extracts, decodes, and processes the video stream for its assigned tile without requiring centralized control or coordination. This self-service approach distributes processing complexity across multiple independent units, reducing the burden on any single processor while maintaining high overall processing capability.
Data Source
AI summary
An active receiver card for a display is provided. The active receiver comprises a processor, a first interface, and a second interface. The first interface is 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 active receiver card further comprises a second interface configured to output control signals to a plurality of pixels of the tile of the 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.