High Definition Television (HDTV) Has Increased Quality and is More Affordable

Today's high definition televisions (HDTVs) are getting more affordable. Combine that with their better performance, and there is virtually no reason for any consumer not to replace their present television.

HDTV is really a digital technology that displays a digital picture and produces digital sound. While the first broadcasts of HDTV signals had been analog, now video compression permits completely digital broadcasting of high quality video and sound. This means that both the picture and sound quality are very much better than the older analog standard definition TVs.

While the older standard definition picture tubes barely showed 480 scan lines of information, the normal definition for HDTV is 1080 interlaced (or 720 progressive scanned) lines of video information with 1920 pixels of information in every line. Displaying nearly square pixels. this offers an aspect ratio of 16:9

This technology has also transfered to DVDs. The traditional DVDs were created with the standard definition pictures with 480 lines of video content. The new Blu-ray disks are created with the high definition displays in mind and supply 1080 lines of information.

More information displayed in the high definition screens implies that the pictures are sharper and exhibit added detail clearly. These screens can be bigger without obviously showing the scan lines. Not only that, but, the HDTV displays are wider than standard definition displays so movies may be shown in wider format that shows almost all of what you see at the movie theater.

Early television programs that were produced with a 4:3 aspect ratio are able to be viewed on the HDTV screen with black bars on either side of the picture. This is due to the broadcaster sending a HDTV signal with a 16:9 aspect ratio with the older 4:3 picture centered inside the wider HDTV screen.

A disadvantage of HDTV for watching older 4:3 aspect ratio programs is that for a similar screen diagonal value (for example, a 32 inch diagonal screen), the HDTV display is literally shorter from top to bottom than a standard definition (4:3) screen. That is because the display is longer. A 32 inch 4:3 display is 19.2 inches tall whereas a 32 inch HDTV display is only about 15.7 inches tall. This means that for a HDTV having the identical diagonal dimension as an older 4:3 aspect TV, the total screen area displaying an older TV program will in fact be smaller.

For watching an older TV program, in order to achieve the identical height and overall area in an HDTV as an older standard definition television you require a longer diagonal screen size. You would have to get a 40 inch HDTV to supply a smidgen more vertical dimension than an older 32 inch standard definition screen. So, if viewing older TV programs is important to you, remember this requirement.

So, now you recognize some of the advantages of the newer HDTV standard for TV screens. Now, it is time to decide on the dimensions of the screen that is right for you and whether to get a Plasma screen or an LCD screen.

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After you have decided to purchase a new HDTV, you will have to choose exactly what size is right for your viewing situation. After that you need to make the correct decision about a Plasma screen TV or an LDC screen TV. Both are first-rate choices in the correct environment. For help making these decisions simply visit Flat Screen TV Sales to read the details about how to make a choice you will be happy with for a long time.

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