digital cable?

Question

whats the difference with digital cable and analog cable?

Answer 1

Analog cable TV uses VHF frequencies (similar to FM radio but higher frequency) to broadcast picture and sound over a cable line. Your TV has a built in VHF tuner that can tune into thes frequencies directly (from channel 2 to about 70). The problem with analog is that it takes much more bandwidth space on the cable line so there is a very limited amount of channels, also the picture and sound is more likely to degrade from the source to your TV.
Digital TV sends the video and picture through the cable line digitally (using binary code 1's and 0's) similar to the way a DVD player stores information. This allows much more information to be sent via cable (approx 1000 channels) in addition to extra features such as interactive on-screen guides and video-on-demand. Since your TV would still only have an analog tuner, you need a digital box to receive these signals, and sends them to your TV in a standard VHF channel 3 output. This also provides a much clearer picture and sound since the digital signal is less likely to degrade.

Answer 2

digital cable is analog cable plus additional channels. For instance, channel 110 on your regular garden variety cable is snow. however with digital cable, (and a required converter) 110 is a channel with picture and sound. you can connect digital cable to a regular tv, but you will not get all of the channels broadcast without a converter box. In my opinion its a marketing ploy. Oh, BTW, they also can send high speed internet on digital cable lines, if you have a modem.

Answer 3

Analog cable is low quality. The red/white/yellow cables that are typically connecting dvd player to tv are analog. An HDMI cable that connects dvd players to tvs today is digital high quality cable.

A DVD stores movies in digital format on the disk. A digital HDMI cable sends this information to tv in digital format without losing quality.

Answer 4

More channels. Plus, digital cable has all the interactive stuff. The on demand, the on screen TV guide, the music channels, and what not. analog is just the channels and the number of channles is getting smaller as cable companies begin to migrate more channels to digital.

Answer 5

The first generation of video and audio cables were designed with analog signals in mind. An analog signal represents the information it is intended to convey by presenting a continuous waveform analogous to the information itself. If the information is a 1000 Hertz sine-wave tone, for example, the analog signal is a voltage varying from positive to negative and back again, 1000 times per second, in a sine-wave-shaped pattern. If we could use that electrical signal to drive a speaker cone to physically move in and out in that same pattern, we'd hear the tone come out of the speaker.

A digital signal, unlike an analog signal, bears no superficial resemblance to the information it seeks to convey. Instead, it consists of a series of "1" and "0" bits, encoded according to some particular standard, and delivered as a series of rapid transitions in voltage. Ideally, these transitions are instantaneous, creating what we call a "square wave." This is so despite the fact that, when the signal is decoded, the result may be the very same 1000 Hertz tone, with its continuous slopes and lack of sharp transitions, represented by the analog signal described above.
https://www.electrikals.com/products/r/cables-wires/a?cid=683&mid=28&page=1&pageSize=15

Answer 6

The difference is in the quality of the signal.
A digital signal gives a much brighter, clearer, higher resolution picture than analog.
You need a TV that will handle digital input to get the benefit of a digital signal.
Analog signals are the older technology.