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Digital Projection E-Vision Laser 7500 & 8500 Series
Reference Guide
APPENDIX C: GLOSSARY OF TERMS
Rev B September 2016
Aspect ratio
The proportional relationship between the width and the height of the projected image. It is represented by two numbers separated by a colon,
indicating the ratio of image width and height respectively: for example, 16:9 or 2.35:1.
Not to be confused with resolution.
Blanking (projection)
The ability to intentionally turn off, that is, set to black, areas around the edges of the projected image. It is sometimes referred to as “curtains”
since it can be used to blank an area of image that literally falls on the curtains at the side of the screen in a movie theater. Usually no image
resizing or geometric correction takes place and the “blanked” part of the image is lost.
Not to be confused with horizontal and vertical blanking (video signal).
Blanking (video signal)
The section of the video signal where there is no active video data.
Not to be confused with blanking (projection).
Blend region
The area of the image that is to overlap with another image in an edge blend setup. Sometimes called overlapping region.
Brightness (electronic control)
A control which adds a xed intensity value to every pixel in the display, moving the entire range of displayed intensities up or down, and is
used to set the black point in the image (see Contrast). In Component Video signals, brightness is the same as luminance.
Brightness (optical)
Describes how ‘bright’ an image that is projected onto a screen appears to an observer.
C
See Chrominance.
Notes
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