What is the difference between cable and television? Why cable TV belongs to the new media, and TV belongs to the old media?

First of all, the signal, that is, the cable TV station to your home with the line, there are analog signals, with the general TV can watch, general television is analog television;

Opening the digital TV in the region, the cable station in the line there are digital transmission of television signals (specific how these signals can be transmitted in a wire you do not need to understand it), this signal anti-jamming ability, painting system is very good, (by the way, analog TV signals have interference manifested as snowflake points and ripples, while digital TV signals have interference manifested as the appearance of colorful squares or rectangular bars) general TV can not watch, only the use of set-top boxes will be converted to analog signals to digital signals and then transmitted to the TV.

Then the TV, TV internal circuitry using analog circuitry called analog TV (that is, ordinary TV), the internal use of digital circuitry (for example, some digital chips) called digital TV (note that this digital TV can only watch analog signals), and there is a TV will be the function of the set-top box (to convert digital signals to analog signals) to do the face of the TV, this is also called digital TV!

And then there is a TV that has a set-top box that converts digital signals into analog signals.

Return to the transmission method, the general television (central, provincial) are transmitted by satellite, which is called satellite TV in foreign countries, meaning that the satellite dish can be received by the television signals, and our country does not allow individuals to install satellite dishes, so these signals are received by the cable TV stations from the satellite down through the cable cable TV cable to the residents of the home.

There is also a kind of television, only cable television stations using cable transmission, the signal is not on the satellite, this is called cable television, such as cable stations around the world, this kind of television only connected to the cable cable can be seen.