HDTV Information

HDTV or high definition television is television technology's newest standards.  It gives out a picture quality that looks like it comes from a wide screen and is similar to a 35mm film as well as having a sound quality that is just like that of a compact disc.

HDTV is actually a part of a number of standards that is integrated in digital television or DTV.   DTV, basically, is made up of three standards that are separate from each other.  These are the HDTV 1080, which features 1080 resolution lines and 16:9 aspect ratio, HDTV 720 of the 720 resolution lines and still of the aspect ratio of 16:9 and SDTV with its 480 resolution lines and aspect ratio of 4:3.  The Advanced Television Systems Committee (ASTC) is the one that gave both 720 and 1080 lines the definition of being HDTV. 

While HDTV was made available to Japanese viewers on NHK Television since 1990 on a basis that is scheduled regularly through transmission via analogue satellite, it was only begun in the fall of 1998 in the United States.  This is when majority of the market in television stations begun DTV transmission.  This started the trend of the coming up of more new on the air DTV stations monthly that is expected to result in all US TV stations being converted to DTV by 2008.

Considered as broadcasting's very major breakthrough since the birth of color TV, the HDTV supplies pictures that are wider and has details that are greater as well having motion picture-clarity.  The HDTV is wider by 25 percent and has a luminance definition that is doubled both horizontally and vertically as opposed to the standard television.  HDTV's aspect ratio, which is 16 units wide and 9 units high, is very close to the average image seen in wide screen as in movie theaters.  Its pictures also have a clarity that makes it fine-grained.  This means that it has information that is 5 times more than the pictures in standard television.  It also has a sound quality that is like that of a multi-channel compact disc that makes the difference in the quality of both sound and video very palpable as when compared to the standard television.

If you want an HDTV in your home, then it is time to let those days when you have to attend to paying for satellite or cable TV go.  This is because over-the-air HDTV is for free making almost all homes in America avail of it.  The first thing you have to do is to get information on the signal availability of your local HDTV.  There are sites online that not only give you listings of all HDTV channels but also instructions on how to go about getting that HDTV signal.

There are now many HDTV sets that are sold as HDTV ready so there is no need to use an HDTV tuner.  These TVs that are required by the government to include tuners that are built in making it ready to pick up over-the-air HDTV signal.  Once you have the HDTV with the built-in tuner, then you are ready to enjoy that wider screen resolution definition in pictures and CD-like sound quality from your TV.  All you have to do is to set up the antenna that is appropriate for HDTV and set in place all the connections through the step-by-step instructions included in your HDTV manual.

Some HDTVs with these ATSC tuners already built in are also equipped with tuners that are specially designed to decode QAM-encoded HDTV signals.  This QAM is a system that is mostly used by cable-TV networks.  This could mean that you could pick up stations that are broadcast locally through your connection with the cable TV.  You have to take note that this is different compared to the system that is ready for digital cable and it is different from using an over-the-air antenna as well.