showstack / glossary / led-processor
LED processor / sending card LED 處理器
The box between a video source and an LED wall that takes a standard video signal, scales and maps it onto the physical panel layout, and drives the receiving cards in the panels. It owns the colour, the gamma, the brightness and the frame rate the wall actually shows.
中文
介於影像訊號源與 LED 顯示屏之間的設備，接收標準影像訊號，縮放並對應到實際的箱體排列，再驅動箱體內的接收卡。屏幕最終呈現的色彩、gamma、亮度與更新率都由它決定。
Regional usage
| Where | Term | Note |
|---|---|---|
| UK / US | Processor / sender | |
| HK / TW | LED 處理器 / 發送卡 |
Easy to get wrong
The processor, not the panel, usually causes camera flicker. Refresh rate and scan mode are processor settings, so "the wall strobes on camera" is nearly always a processor conversation.
Next to this
Pixel pitch點間距The centre-to-centre distance between LED pixels on a video wall panel, in millimetres — P2.6, P3.9, P4.8 and…Scaler影像縮放器A device that converts an incoming video signal to a different resolution, frame rate or format so a display …
Sources
- IEEE 1789 recommended practice on LED flicker — IEEE primary
Understand the mechanism
Something wrong, or missing?
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