What is the general definition of digital TV?

The general definition of digital TV is 720P or 1080P.
1. If it refers to digital TVs, the current digital TV screens can reach full HD resolution, that is, 1080P, and some even support 4K resolution display, so the general definition of digital TVs can reach 1080P or above.
2. If it refers to digital TV set-top boxes, they can be divided into standard-definition set-top boxes and high-definition set-top boxes based on common definitions; usually the resolution of the program signal picture output by the standard-definition set-top box can reach 720P; the clarity of the program signal picture output by the high-definition set-top box can reach 720P. It reaches 1080P, but there are relatively few program channels, and most of them require payment to open the viewing rights for high-definition channels.