So what exactly is High Definition Television?
Simply put, a high quality digital television signal that can display 1280x720 pixels or better.
How can I receive a High Definition Signal?
First you must have a television set that can display a minimum of 1280x720 pixels or higher,
then you must have a provider that broadcasts in High Definition such as a satellite or cable
provider. You will be required to have compatible HD equipment from our provider and subscribe
to their available HD programming which is different than regular digital programming.
Depending on where you live and if you can physically receive over the air broadcasts via an antenna,
you may be able to receive local high definition programming. The benefit to this is, it's free!
Definition of Television Types
HDTV (High Definition TV)
A TV that displays 1280x720 pixels or better. The generally agreed upon definition of HDTV is approximately twice the vertical and horizontal picture resolution of today's NTSC TV, which essentially makes the picture twice as sharp. HDTV also has a screen ratio of 16:9 as compared with most of today's TV screens, which have a screen ratio of 4:3. HDTV offers reduced motion artifacts (i.e. ghosting, dot crawl), and offers 5.1 independent channels of CD-quality stereo surround sound, (also referred to as AC-3).
SDTV (Standard Definition TV)
SDTV is 480i, which is approximately the resolution of NTSC and DVD's.
DLP (Digital Light Processor)
A technology for video projection, also called DMD (Digital Micro-mirror Device). It is a large chip with about a million tiny mirrors on its surface. The chip can tilt each mirror to vary the amount of light reflected off of it.
D-ILA (Direct-drive Image Light Amplifier) (see LCOS)
LCOS (Liquid Crystal On Silicon)
This is another contender to replace CRT's in projection TV's.
LCD (Liquid Crystal Display)
A common display technology. LCD is likely to replace CRT's in the smallest HDTV's. An LCD television or monitor uses liquid crystals that act as "shutters" within the television screen. An LCD television has thousands of small light sources at the rear of the display. A layer of cells containing the liquid crystals is placed between the light sources and the display screen. When the liquid crystal cells are electrified with current, the crystals align and block any light from shining through, or scatter allowing the light to shine through to the screen. LCD monitors typically only display video signals in a progressive scan format. LCD monitors do not use phosphors and are not susceptible to screen burn.
Resolution which equates to 1,920 x 1,080 pixels. 1080p monitors are capable of displaying every pixel of the highest-resolution HD broadcasts.
An interlaced resolution of 1,920 x 1,080
Refers to a High Definition production format (SMPTE 296M) having a digital sampling structure of 1280 (H) x 720 (V) and operating at 60-frames per second progressively scanned. Often used to loosely describe a capture system that operates at 59.94P as well.
An emissive flat-screen technology in which ionized gas is sandwiched between panels of glass that are embedded with wire. These displays are slim (about 4 inches deep) and can be created in sizes as large as 60 inches diagonally; they are generally used in flat-panel TVs.
High-definition digital video disc. Several formats have been proposed for these high-capacity DVD's, including Blu-ray.