Digital Projection
HIGHlite 730 & 740 Series
APPENDIX F: GLOSSARY OF TERMS
Reference Guide
155
Rev E March 2014
ColorMax
A method of accurately color-matching projectors together.
Component video
A three or four wire video interface that carries the signal split into its basic
RGB
components or
luminance (brightness)
and two-
color-
difference
signals (
YUV
) and
synchronization
signals.
Composite video
A signal line that carries
luminance
,
chrominance
,
synchronization
pulses and
blanking
.
Contrast (electronic control)
The adjustment of the white point of the image without affecting the black point. This increases the intensity range of the displayed image.
Contrast (optical)
The intensity difference between the darkest and lightest areas of the screen.
Cr, Cb
Color difference
signals used with ‘
Y
’
for digital
Component Video
inputs. They provide information about the signal color. Not to be
confused with
Pr, Pb
.
Crop
Remove part of the projected image.
Alternatively, fit an image into a frame with a different
aspect ratio
by removing part of the image. The image is resized so that either its
length or its width equals the length or width of the frame, while the other dimension has moved outside the frame; the excess area is then cut
out.
DDC (Display Data Channel)
A communications link between the source and projector. DDC is used on the HDMI, DVI and VGA inputs. The link is used by the source to
read the
EDID
stored in the projector.
Notes
