Digital Projection E-Vision Laser 4K Series User Manual page 120

Digital Projection E-Vision Laser 4K Series APPENDIX D: GLOSSARY OF TERMS
Interlacing
Notes
A method of updating the image. The screen is divided in two fields, one containing every odd horizontal line, the other one containing the
even lines. The fields are then alternately updated. In analog TV interlacing was commonly used as a way of doubling the refresh rate without
consuming extra bandwidth.
Interleaving
The alternation between left and right eye images when displaying 3D.
LED (Light Emitting Diode)
An electronic component that emits light.
Letterboxing
Black margins at the top and bottom of the image. Letterboxing appears when a wider image is packed into a narrower frame without
changing the original aspect ratio.
Lumen
A photometric unit of radiant power. For projectors, it is normally used to specify the total amount of emitted visible light.
Luminance
Also known as 'Y', this is the part of a Component Video signal which affects the brightness, i.e. the black and white part.
Noise
Electrical interference displayed on the screen.
NTSC (National Television Standards Committee)
interlaced fields
The United States standard for television - 525 lines transmitted at 60 per second.
Reference Guide Rev A June 2017
page 112