High Definition Television is here!
High definition television (HDTV) has finally come to the country. And it is
about time. For years our TV electronics
have had low quality signals sent within a system called NTSC. Now we have a new
system called ATSC that provides high quality video and multi-channel audio to
our homes.
HDTV can be available in many types of TVs
You can get HD on many different TVs;
• CRT TVs
• Rear projection CRT TVs
• LCD TVs
• LCD Rear projection TVs
• LCD projectors
• DLP Rear projection TVs
• DLP projectors
• Plasma TVs
How do I receive HD programming?
There are a few different ways you can receive high definition. You can get high
definition broadcasts from HD satellite, HD cable, or local station HD
transmitters. Of course, you will need a few more things.
No matter what source you decide to access, you will need an ATSC receiver
either from the cable or satellite provider. Some HDTVs now come with a built-in
ATSC tuner to allow the TV to access HD signals without a set top box.
Different resolutions available
Standard Definition (SD)
Vertical resolution (lines per frame) - 480 interlaced
Horizontal Resolution (pixels per line) - 704
Aspect Ratio - 4:3
Audio - Dolby Digital 5.1
Pixel Count 337,920
Enhanced Definition (ED)
Vertical resolution (lines per frame) - 480 progressive
Horizontal Resolution (pixels per line) - 704
Aspect Ratio - 4:3 or 16:9
Audio - Dolby Digital 5.1
Pixel Count 337,920
High Definition (HD)
Vertical resolution (lines per frame) - 720 progressive
Horizontal Resolution (pixels per line) - 1280
Aspect Ratio - 16:9
Audio - Dolby Digital 5.1
Pixel Count - 921,600
High Definition (HD)
Vertical resolution (lines per frame) 1080 interlaced
Horizontal Resolution (pixels per line) 1920
Aspect Ratio 16:9
Audio - Dolby Digital 5.1
Pixel Count - 2,073,600
NTSC (analog)
Vertical resolution (lines per frame) 480 interlaced
Horizontal Resolution (pixels per line) 450
Aspect Ratio 4:3
Audio - Stereo (2 channel)
Pixel Count - 216,000
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