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Glossary
Upstream
The direction of data flow towards the host. An upstream port is the port on a device electrically
closest to the host that generates upstream data traffic from the hub. Upstream ports receive
downstream data traffic.
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V
Vertical refresh rate
Expressed in Hz, it is the number of frames (complete pictures) written to the screen every second.
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file:///P|/OEM MODELS/PHILIPS/CD Manual/17/170A7/170A7/lcd/manual/ENGLISH/170A7/glossary/glossary.htm 第 9 頁 / 共 9 2006/3/29 上午 10:24:09
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