A DTV receiver is a set-top box that permits the reception of digital television. Its components are very similar to a desktop PC. The DTV receiver is a vital link in the chain of television system. It is usually connected to the TV set or incorporated in the TV set. 

The main features of a DTV receiver may be classified as follows:

1. decodes the incoming digital signal;

2. verifies access rights and security levels;

3. displays cinema quality pictures on the TV set;

4. outputs digital surround sound;

5. processes and renders Internet and interactive TV services.