I decide to divide television technology posting in 2 parts. In first part, I explain about old technology from 1950-1995. And in this part the latest and newest technology I wrote.

DivX

How many formats can your DVD player play? DivX playback is becoming more common in the new DVD player models. DivX is a digital video compression format based on the MPEG-4 technology used on the internet to exchange video files. DivX files can be downloaded over high-speed lines in a relatively short time without sacrificing the quality of the digital video. With the internet quickly becoming a source of video entertainment, it is important to cover all the bases in digital playback

HDTV

HDTVs (High Definition Televisions) offer superior clarity and sharpness of image with over 5 times the resolution of a regular television picture offer. They accurately represent vivid colors in a wide range of hues (such as subtle purples and reds) without any ‘bleeding’ and the edges. You’ll be amazed by the fine details you could never see on a regular TV.

HDTV programming also provides 5.1 channel Dolby Digital Surround Sound to complete the true theater experience.

HDTV refers to a complete product/system with the following minimum performance attributes:

Display Scanning Format: active vertical scanning lines of 720 progressive (720p), 1080 interlaced (1080i), or higher

Receiver: Receives ATSC terrestrial digital transmissions and decodes all ATSC Table 3 video formats

Audio: Receives and reproduces, and/or outputs Dolby Digital audio

EDTV

EDTV (Enhanced Definition Television), while not as high resolution as HDTV, is in fact a major step forward in picture quality, using a 480-line progressive scan technique commonly referred to as 480p, as opposed to the interlaced signal of a regular TV. On a big screen it looks closer in quality to HDTV than it does regular television. Most DVD players on the market output both interlaced and progressive signals, and they are getting better and cheaper by the month. So every DVD on the market can be played in EDTV right now!

EDTV refers to a complete product/system with the following minimum performance attributes:

Display Scanning Format: active vertical scanning lines of 480 progressive (480p) or higher

Receiver: Receives ATSC terrestrial digital transmissions and decodes all ATSC Table 3 video formats

Audio: Receives and reproduces, and/or outputs Dolby Digital audio.

Now we can compare between several television technologies. How this technology was improved along time?