Active Receiver Card for Modular LED Display
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Solution Overview
Problem
Traditional video processing systems for LED displays face challenges with high latency, increased processing complexity, and high costs due to the need for expensive high-bandwidth transmissions and centralized processing, which also 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, thereby decentralizing processing and reducing latency and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional centralized video processing systems use high-bandwidth transmissions (e.g., 10 Gbps ethernet) to deliver video data to LED tiles, then video data transmission bandwidth is improved, but system cost increases and latency increases
Solution Approach 1:
The video data stream is segmented into individual tile portions, with each LED tile receiving only its specific portion via a daisy-chain connection. This eliminates the need for high-bandwidth transmissions to every tile while reducing latency through localized data delivery.
Solution Approach 2:
Instead of the traditional approach where a central processor sends data to each tile individually, the system inverts the data flow by having video data pass through a daisy-chain of tiles sequentially, with each tile extracting its needed data from the passing stream. This reversal reduces overall system latency.
2Productivity
If traditional systems use centralized processing with expensive high-bandwidth transmissions, then video data delivery capability is improved, but device complexity increases
Solution Approach 1:
The centralized processing architecture is segmented into distributed processing across multiple LED tiles. Each tile contains its own processing capability to extract and interpret video data from the daisy-chain stream, reducing the complexity burden on any single device while maintaining overall system capability.
Solution Approach 2:
Each LED tile is designed with multi-functionality, serving both as a display element and as a data processing node in the daisy-chain. This universal design simplifies the overall system by eliminating dedicated separate processing devices while maintaining video data delivery capability.
3Quantity of substance
If traditional LED systems use ethernet or ethernet-like protocols with manual configuration, then video data transmission is achieved, but ease of operation deteriorates due to configuration difficulty
Solution Approach 1:
The LED tile system performs self-configuration through the daisy-chain architecture. Each tile automatically receives video data from the previous tile and extracts its designated portion without requiring manual configuration, eliminating the complexity of ethernet protocol setup and tile positioning.
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.