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Digital Projection
HIGHlite 8000 Series
APPENDIX C: GLOSSARY OF TERMS
Reference Guide
76
Rev F July 2014
HDCP (High-bandwidth Digital Content Protection)
An encryption scheme used to protect video content.
HDTV (High Definition Television)
A television system with a higher
resolution
than
SDTV
and
EDTV
. It can be transmitted in various formats, notably
1080p
and 720p.
Hertz (Hz)
Cycles per second.
Horizontal Scan Rate
The rate at which the lines of the incoming signal are refreshed. The rate is set by the horizontal
synchronization
from the source and
measured in
Hertz
.
Hs + Vs
Horizontal and vertical
synchronization
.
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.
Noise
Electrical interference displayed on the screen.
Notes
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