Digital Projection E-Vision Laser WQ120 Series, Installation And Quick Start Manual

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Digital Projection E-Vision Laser WQ120 Series APPENDIX D: GLOSSARY OF TERMS
Rev A May 2018
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.
Deinterlacing
The process of converting interlaced video signals into progressive ones.
DHCP (Dynamic Host Configuration Protocol)
A network protocol that is used to configure network devices so that they can communicate on an IP network, for example by allocating an IP
address.
DMD™ (Digital Micromirror Device™)
The optical tool that transforms the electronic signal from the input source into an optical image projected on the screen. The DMD™ of a
projector has a fixed resolution , which affects the aspect ratio of the projected image.
A Digital Micromirror Device™ (DMD™) consists of moving microscopic mirrors. Each mirror, which acts as a
pixel
, is suspended between
two posts by a thin torsion hinge. It can be tilted to produce either a bright or dark pixel.
Edge tear
An artifact observed in interlaced video where the screen appears to be split horizontally. Edge tears appear when the video feed is out of
sync with the refresh rate of the display device.
Notes