Active Receiver Card Layout for Low-Latency Modular Video Displays
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Solution Overview
Problem
Traditional video processing systems for LED displays face challenges with high costs, latency, and complexity due to the need for high-bandwidth ethernet or fiber connections and compression algorithms, which introduce pixel and frame artifacts.
Innovation Solution
A video processing system using an active receiver card with a processor to receive and process a broadcast serialized video data stream, allowing each LED tile to read only its relevant data and enabling decentralized processing, reducing latency and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-bandwidth ethernet or fiber connections are used to deliver video data to LED displays, then video quality and resolution are improved, but system cost and complexity increase
Solution Approach 1:
The video data stream is segmented into tile-specific portions, with each LED tile receiving only its relevant data through dedicated connections. This segmentation allows the use of multiple lower-bandwidth connections instead of a single high-bandwidth connection, reducing overall system complexity and cost while maintaining video quality.
2Productivity
If compression algorithms are used to reduce bandwidth requirements, then data transmission efficiency is improved, but pixel and frame artifacts are introduced
Solution Approach 1:
The system extracts only the necessary video data for each specific LED tile from the overall video stream, eliminating the need for compression algorithms. By taking out only the relevant tile portions, the system achieves efficient data transmission without introducing compression artifacts, maintaining both productivity and manufacturing precision.
3Ease of operation
If centralized processing is used to manage video data distribution, then system control is simplified, but latency increases
Solution Approach 1:
The centralized video processing is segmented and distributed to individual LED tile controller boards. Each controller board independently processes its own tile's video data, eliminating the need for complex centralized data distribution and reducing latency. The segmentation allows parallel processing across multiple tiles, improving response time while maintaining ease of operation through standardized tile interfaces.
4Use of energy by moving object
If manual calculation and configuration of LED tile connections is performed, then bandwidth optimization is achieved, but setup time and operational complexity increase
Solution Approach 1:
The LED tile controller boards perform self-configuration by automatically receiving and processing video data streams. Each controller board independently identifies and processes its relevant tile data without requiring manual calculation or configuration. This self-service approach optimizes bandwidth utilization through automatic data routing while dramatically reducing setup time and operational complexity.
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.