showstack / glossary / scaler
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 can take it. Every scale costs a frame or more of latency and some image quality, which is why a well-planned system scales once.
中文
把輸入影像轉換成另一種解析度、更新率或格式，使顯示設備能夠接收的設備。每一次縮放都要付出至少一個影格的延遲與部分畫質，因此規劃良好的系統只縮放一次。
Regional usage
| Where | Term | Note |
|---|---|---|
| UK / US | Scaler | |
| HK / TW | 縮放器 / Scaler |
Easy to get wrong
A switcher with "seamless" outputs is scaling on every input. That is where the latency in a presentation system comes from, not from the cable length.
Next to this
Sources
- SMPTE ST 292-1 HD-SDI — SMPTE primary
Understand the mechanism
Something wrong, or missing?
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