HDTV FAQ. What Is High Definition?
What Is The Difference Between SDTV, EDTV, And HDTV?
The first thing that will happen on 9/17/2009, will be the change over or "Digital Transition" from standard definition analog television to Digital Transmission.
Along with that, the technology of TV marches on, and we now have a wide range of TV sets to choose from.
We have had low resolution TV for years, and now, we have SDTV, EDTV, and HDTV.
There are lots of people searching for high definition change over explained on Google.
What they should be searching for is Digital TV changeover explained.
But Digital TV doesn't automatically mean High Definition TV.
Although basically, HDTV will become the new standard.
The reason is that it is the highest quality level of all the different standards.
Digital HDTV still allows backward compatibility with the lower grade TV signals, such as EDTV and SDTV.
All TV signals are to be digital by the year 2009, in the US. (2/17/2009)
The US Government has set this date as the Digital Transition date.
Other countries, like Australia have a different time frame.(2012 currently)
The old analog TV system will be switched off, and all old TV sets will be black. Basically, useless.
Unless you have a set top box to plug in to it, in which case, it will work with Digital TV, but, It will not be HDTV.
You will need to upgrade to a new HDTV for that...
The reason it is being switched off is partially because the old bandwidth that is currently used for TV, will be freed up for other uses.
Emergency, Fire, etc. Plus there is a LOT of money to be made by selling off all that spectrum.
Check out the DTV 2009 link for the latest information, including the
Digital TV Converter Box Coupon Rebate... [New Window]
The transition to digital TV or the
Digital TV Transition and Coupon Program [New Window]
Why HDTV and Digital TV
are Not The same..
Aspect Ratio Explained...[New Window]
Digital signals are made of ones and zeroes, like computer language, and are not prone to interference and ghosting and will give a great picture.
Analog signals are very prone to noise and interference.
Not forgetting the major improvements in digital sound, which is a huge difference over the old school TV sets.
The various TV systems that are currently available are...
SDTV or Standard Definition Television: This is Not HDTV. Basic TV sets with limited resolution. Up to 480i or 480p widescreen or 4x3 format. Stereo sound.
Here is a very interesting topic, use a digital converter or a hdtv converter to convert your Old TV, Plasma TV or LCD tv to digital, even use a
Digital TV converter to receive High Definition? Yes it is possible! How To Convert Your Current TV To Digital!
EDTV Enhanced Definition TV:
...This is Not HDTV. At least 480p Widescreen with Dolby Digital audio, surround capable.
EDTV? No, It's not HDTV. But it's close enough?
HDTV FAQ for High Definition TV
...This IS HDTV... Widescreen 16x9 720p (No lines) or 1080i (Lines) or 1080p (No lines) and Dolby digital surround sound...
HDTV FAQ for Television? How To Get The Best Pictures...
Blu-ray, a new High Definition DVD format uses 1080p, (No Lines)
Key features of HDTV?
Aspect Ratio (Widescreen)
Digital Sound, Aspect ratio is the major difference between HDTV and old school TV sets.
Most old school TV sets were made for 4 by 3 aspect ratio.
HD signals are 16 by 9 aspect ratio, meaning widescreen, simulating movie theatre screens.
After seeing HDTV, many people think that the old style TV picture looks small and chopped off.
Don't forget the sound.
The sound experience is greatly enhanced, and most TVs have a great pair of speakers built right in.
HDTV FAQ. Not Geeky.
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