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Digital Projection E-Vision Laser 7500 & 8500 Series
Reference Guide
APPENDIX C: GLOSSARY OF TERMS
Rev B September 2016
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.
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 xed 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 blend
A method of creating a combined image by blending the adjoining edges of two or more individual images.
Notes
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