What is Pixel Clock Rate?

HowToAV discusses what pixel clock rate is.

What is pixel clock rate?

Pixel Clock Rate is the speed at which pixels are transmitted (over an AV / video signal such as HDMI or DVI for example), in order for a full frame of pixels to fit within a single refresh cycle.

The Pixel Clock Rate (or Pixel Clock Frequency) runs on the TMDS of the HDMI / video signal.

The pixel clock defines parameters that determine whether or not a particular resolution/refresh rate can be transmitted over a particular video cable.

What is TMDS?

TMDS is other wise know as Transition Minimized Differential Signaling. It was developed by Silicon Image Inc, a technology for transmitting high speed digital data used in HDMI signal.

What is Horizontal Scan Rate?

Horizontal scan rate is the frequency that horizontal lines are being transmitted/displayed. You can calculate it once you have the refresh rate and the gross number of horizontal lines in the image.


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