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difference between cable tv and digital tv

Difference between cable tv and digital tv

Since the inception of digital television things have changed majorly as almost every tech has changed from digital to analogue. cable television used to be very simple until the coming of digital television. It was very difficult to state the different between cable tv and digital tv.

What is Cable TV ?

To state the different between cable tv and digital tv one will first ask what is cable tv andwhat is digital tv. Cable tv is a tech device that operates in UHF and VHF bands to bring out television viewing to subscribers by means of coaxial cables. Cable tv is also known as Community Antenna Television.

In places with very poor connectivity, cables where installed to enable individuals to get access to television programming.
In this case the subscribers pay a little fee to their service providers.

The coaxial cable issues the tv signal to the subscribers hub that plugs directly to the television set. In some cases cable providers tends to install amplifiers to increase the signal strength for a better viewing experience. Not minding the number of people that the cable tv is serving, it is still serving a high speed internet.

Cable television broadcast two types of signals:

• Analog
• Digital
Analog tv do have some kind of noise and interference which always the quality of the video program. Digital signals, is the updated version of the cable tv which gives high-quality content.

What is Digital TV?

Digital television is self explanatory, it enables various television stations to broadcast high-quality digital content on multiple channels at the same time for a more advanced viewing experience. Digital simply means better picture and better sound and this is always free.

Unlike previous television technology which brings out lesser efficient analog signals for transmission, digital tv uses digitally programmed signals for unbeaten viewing experience
At times people refer to digital tv as synonymous with “HDTV”, but this is not so as they are entirely different. HDTV is just a new display format not the method of transmission, which can come in both analog and digital.

Digital TV are of two qualities of picture:
• Standard-Definition Television (SDTV)
• High-Definition Television (HDTV)

Difference between Cable TV and Digital TV

  1. Signal
    Cable television transmits signals through a coaxial cable that directly joins the television set or joins the nearest cable box when using either analog or digital signals. on the other hand, digital tv transmits high-quality digitally programmed signals.
  2. Media
    A cables are been made use of in cable TV where the UHF and VHF band is used to deliver signal to community antenna, while digital television signal comes through a cable or transmitted by air.
  3. Transmission
    Cable TV passes signals in the form of a frequent variable wave, but digital TV passes signals in a way of an electrical pulse which is represented by binary data.
    4.Quality
    In cable tv, the signal reduces when it travels to a long distance and may not be even noticed if get outside of the coverage area. In digital signals do not loose it quality no matter the distance traveled. Distance may affect the sound but not the transmission.
  4. Consistency
    Cable tv at times suffers poor sound quality and also poor picture quality as a result of inference by waves. Digital signals gives better quality viewing which can withstand the pressure of wave.
  5. Multicasting

In cable tv the quality of the cable tv depends on the signal that it received from . nut on the other hand digital tv do not depend on the transmission it receives.

Cable TV vs. Digital TV

Cable TV vs Digital TV
Cable TV operates on just analog signals. Digital operates on both analog and digital signals.
Transmits signals via coaxial cables. Digitally encoded signals are directly fed into the television set.
Broadcast quality degrades over long distances. Distance does not affect the quality of broadcast.

Loss of picture and sound quality due to noise and interference. Cleaner signal results in high-quality sound and picture.
Cannot add and remove favorite channels. Able to support more channels and more content through multicasting.
Low picture quality, sharpness, and contrast. Better resolution, vivid pictures, wider aspect ratio, and higher pixel density.

Summary

• cable TV and digital TV are the two types of tv tech, both have their big differences.
• Both have different designs and concepts.
• The change from analog to digital tv was to achieve the same aim, to get the best viewing experience.
• Digital TV is quite better than a cable TV in every thing
• The change from analog to digital tv really helped especially in the entertainment industries.

 

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