Display Control System

Sending Card Box:

A hardware device that collects data from peripheral equipment, processes it through calculations, and transmits the data to the display’s receiving cards. It is typically connected to a computer.

Receiving Card:

A hardware device that receives data from the transmission card and inputs it to the modules according to preset programs. It is usually installed inside the terminal display cabinet.

(1.) What Factors Determine Whether a Receiving Card Can Drive a Cabinet?

• Total load points of the cabinet.
• Number of data groups in the cabinet.
• Load points per data group.
• Cascading method of the modules (light boards).

Cabinet Module Layout & Data Group Arrangement (See Diagram):

(2.) Example:

A cabinet is 96×96 pixels, with light boards of 48×48 arranged in 2×2 (non-cascading). Each light board has 3 data groups. Can the NovaStar MRV330 receiving card drive this cabinet?

Calculate the pixel points per data group:

• Light board size: 48×48 ÷ 3 data groups = 768 points per data group.
• Total data groups in the cabinet: 12 data groups (≤ 16 data groups supported by the receiving card).
• Load capacity per data group of the receiving card: 256×226 ÷ 16 = 3,616 points (exceeds 768 points).
• Conclusion: The receiving card can drive this cabinet.

Video Processor:

In the LED display industry, an LED video processor is also known as an LED image processor, LED video controller, LED signal converter, LED video format converter, or standalone video source. In short, it is primarily used for full-color synchronized LED display systems to collect peripheral signals, process them via specialized image chips, and convert them into DVI or VGA outputs. Users can freely switch between input signals as needed.

LED Video Processors Typically Include the Following Functions:

• Signal format conversion
• Bit depth enhancement
• Resolution scaling
• Seamless zooming
• Color space conversion
• Image processing and enhancement
• Large-screen splicing and display
• Multi-channel real-time signal display
• Freeze frame, hot backup, and other auxiliary functions