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BKSTS Illustrated Dictionary of Moving Image Technology, 4th Edition by Martin Uren

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Y

Y: Used to indicate the luminance signal.

Yagi: A directional aerial array invented by Hidetsugu Yagi, a Japanese physicist. It is the form used by the majority of UHF television reception aerials, comprising a dipole connected to the aerial lead, a rear reflector and several directors in front of the dipole whose spacing sets the gain/directivity of the aerial across its designed frequency range.

Y-axis: In a graph or oscilloscope, the vertical axis of the display.

YCbCr:The digital luminance and colour difference signals in ITU-R BT.601 coding. See also Cb and Cr.

Y/C: Separate analogue luminance Y and chroma C signals which are recorded on some videotape recording formats. Also the name for the connector carrying the two signals.

Yellow ...

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