Digital Television

Digital Television or DTV is the process of sending and receiving of moving images and sounds by means of discrete digital data signals. Anything “digital” basically means it is a form of binary code, or 0’s and 1’s, like computer languare. This DTV is in contrast to the signals used by Analog TV, which are basically like a radio frequency.

Digital Television launched back in the of the 1990s as a technology that appealed to the television broadcasting business and the consumer electronics industries by offering potentially profitable financial opportunities. All the hype for DTV is well deserved as it is far more flexible and efficient than the analog TV of old. Digital TV can allow higher-quality images and sounds and more programming options than the analog version.

When it comes to cables, it is not always necessarily the rule that a digital signal will always carry a higher-quality image or sound than an analog signal but then possibilities are more. HDMI cables can carry 1080P resolution, along with sound, whereas analog component cables will carry 1080i resolution, without sound. As for sound, most experts will agree that the sound off an analog record, or reel-to-reel tape is the best available, and only recently with blu-ray high storage disks showing up, has sound approached the analog quality.

Digital video compression is the driving force behind the global revolution in the satellite-delivered direct-to-home (DTH) TV program distribution. These digital television signals are transmitted in an abbreviated format that dramatically reduces the required frequency bandwidth without substantially degrading the quality of the pictures and sounds received.  This explains the global explosion of the number of new satellite-delivered DTH TV services.