Sceptre Technologies X42 - Manual (Page 105)

SCEPTRE X42 HDTV User Manual
- 105 -
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Glossary
Analog TV – Today’s TV system is using radio frequency waves to transmit and
display pictures and sound. 480i is today’s analog TV resolution.
Aspect Ratio 4:3 – Traditional TV “ aspect ratio”, that is, the screen’s width as
compared to it’s height. For example a 32 inch TV would be 25 inches wide and
19 inches tall.
Aspect Ratio 16:9 – “Wide screen TV” aspect ratio, which is more like a movie
screen than a traditional TV. For example your X42 LCD HDTV would be around
28 inches wide and 16 inches tall.
Digital Channel – Television channel delivered and displayed using radio
frequency waves that contain information that is digitally encoded for improved
quality and efficiency.
ATSC/NTSC Tuner – A device capable of receiving and outputting HDTV and
analog TV signals for display.
HDTV – Television with the best quality picture, wide screen 16:9 display with at
least 720 progressively scanned lines (720P) or 1080 interlaced lines (1080i) and
digital surround sound. HDTV provides 900,000 – 2.1 million pixels.
Interlace Scan – A way to scan vertical lines onto a TV picture by scanning all
the odd lines first, then filling in the even lines (this happens instantaneously). In
a fast moving action picture or sports channel, this type of scanning will show
pixilation.
Progressive Scan – A way to scan vertical lines onto a TV picture by scanning
all the lines consecutively (progressively). In a fast moving action picture or
sports channel, this type of scanning will show NO pixilation.
Digital Noise Reduction (DNR) – This is a filtering function that makes grainy
videos look smoother and less blocky.
Temporal Noise Reduction – This is an advanced filtering function that makes
grainy videos look smoother and less blocky but also makes the edges or
borders of objects look sharp and not overly soft.
Adaptive Contrast – This is a function that makes the TV automatically increase
color and contrast of the video depending on the picture’s scene. Details in a
dark picture environment such as a movie scene at night are more vivid by