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, t 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.
Dark time
The time inserted between frames when using 3D active glasses, to avoid ghosting caused by switching time between left and right eye.
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.
Deinterlacing
The process of converting interlaced video signals into progressive ones.
DHCP(DynamicHostCongurationProtocol)
A network protocol that is used to congure network devices so that they can communicate on an IP network, for example by allocating an IP
address.
Notes
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