What's the difference between digital TV and ordinary TV?

Digital TV refers to a TV system that uses digital technology in the process of shooting, editing, making, playing, transmitting and receiving TV signals. To really let the public see digital TV, we must have a complete digital system, including digital program production platform, digital TV signal transmission platform and digital TV receiving terminal. At present, there is no real digital TV set on the market. The "digital TV set" that citizens see should be "digital high-definition TV set" accurately. Therefore, citizens must watch digital TV through the mode of "TV+set-top box".

So what is a set-top box? According to relevant sources, the set-top box is a box installed on the top of the TV. Technically speaking, it is a kind of household appliance that expands the function of TV. According to the types of received signals, it can be divided into analog TV set-top boxes and digital TV set-top boxes. Analog TV set-top box can only receive analog signals, while digital TV set-top box is a real set-top box because it is closely related to TV and is a digital device. At present, ordinary TV sets commonly used by the general public can watch digital TV only by installing set-top boxes, and there is no need to make any changes to the original cable TV lines and TV sets.

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