A lot of people wonder what is the difference between the analog and digital TV? The answer is the way the signal is transmitted. The signal of analog television resembles very much to radio signal transmission, with one difference: the video signal of analog television is AM and the audio is FM. There are many negative aspects of analog signals, and one of those is that there can be annoying interferences in bad weather, and signal quality depends very much on the location of the TV.
The resolution and image quality are also restricted, because there are certain bandwidths assigned to analog TV channels. The analog signal is the United States follows the NTSC standard. This had been adopted in the 1940's, and served well since then, but nobody thought at that time that about color television. One major weakness of the NTSC standard is color implementation, so it is no wonder a lot of people call "Never Twice The Same Color" the NTSC standard.
Digital TV has quite a few advantages over analog signals. Digital signal is very much like computer data flow. There are two kinds of signal: 0, and 1, meaning "on" and "off". The user sees the image or not. This is why in the digital era gradual signal loss and interference is unknown. And it doesn't matter how far away the transmitter is.
Digital TV format has been designed considering all main factors of television signal: B/W, color and audio can be transmitted as progressive or interlaced signal. Basically this means the signal content has greater integrity and flexibility.
Another advantage is that because digital TV signal consists of "bits", the same bandwidth one analog TV signal requires can host not only higher quality digital image, but there will be extra space left, which can be used for extra video, audio or text signals.
Because of this, viewers can have a lot of extra features like surround sound, multiple language audio or text using the same bandwidth the standard analog TV signal requires. Digital television is also able to transmit signal for HDTV's that become more and more popular these days.
With this technology, programs using true wide screen format (16x9) can be broadcasted. The 16x9 format means the shape of the picture corresponds to a movie screen. Viewers can forget about the black bars on the top and the bottom of the wide screen image, being able to watch movies the same way filmmakers wanted to be seen. Sports fans can also see more action, and with 16x9 format it is possible to view the entire football field, without the sensation that it is far away.
Digital transition in the United States took place on June 12, 2009. On this date all analog TV signals went dead, and every analog television became useless without an analog-to-digital converter. Originally the digital transition was scheduled to 2006, but authorities postponed it because they were afraid the consumers are not ready. - 32388
The resolution and image quality are also restricted, because there are certain bandwidths assigned to analog TV channels. The analog signal is the United States follows the NTSC standard. This had been adopted in the 1940's, and served well since then, but nobody thought at that time that about color television. One major weakness of the NTSC standard is color implementation, so it is no wonder a lot of people call "Never Twice The Same Color" the NTSC standard.
Digital TV has quite a few advantages over analog signals. Digital signal is very much like computer data flow. There are two kinds of signal: 0, and 1, meaning "on" and "off". The user sees the image or not. This is why in the digital era gradual signal loss and interference is unknown. And it doesn't matter how far away the transmitter is.
Digital TV format has been designed considering all main factors of television signal: B/W, color and audio can be transmitted as progressive or interlaced signal. Basically this means the signal content has greater integrity and flexibility.
Another advantage is that because digital TV signal consists of "bits", the same bandwidth one analog TV signal requires can host not only higher quality digital image, but there will be extra space left, which can be used for extra video, audio or text signals.
Because of this, viewers can have a lot of extra features like surround sound, multiple language audio or text using the same bandwidth the standard analog TV signal requires. Digital television is also able to transmit signal for HDTV's that become more and more popular these days.
With this technology, programs using true wide screen format (16x9) can be broadcasted. The 16x9 format means the shape of the picture corresponds to a movie screen. Viewers can forget about the black bars on the top and the bottom of the wide screen image, being able to watch movies the same way filmmakers wanted to be seen. Sports fans can also see more action, and with 16x9 format it is possible to view the entire football field, without the sensation that it is far away.
Digital transition in the United States took place on June 12, 2009. On this date all analog TV signals went dead, and every analog television became useless without an analog-to-digital converter. Originally the digital transition was scheduled to 2006, but authorities postponed it because they were afraid the consumers are not ready. - 32388
About the Author:
Edward is an electronics expert who writes plasma tv reviews. To read more sony hdtv reviews, visit HDTVReviewLab.com
