A set-top box (STB) or set-top unit (STU) (one type also colloquially known as a cable box) is an information appliance device that generally contains a TV-tuner input and displays output to a television set and an external source of signal, turning the source signal into content in a form that can then be displayed on
Do you need a HD box if you have a HD TV?
If you are interested in getting the most from your HDTV, you need to have one or more of the following high-definition sources connected to your TV: HD cable or HD satellite service. HD cable DVR, HD satellite DVR, or TIVO-HD or similar device. Over-the-air antenna combined with an ATSC tuner in the HDTV.
Do you need converter box to watch TV?
But in general, you don’t have to have all those things to watch TV. If you live in an area near a broadcast station, you can still plug a pair of rabbit ears into the antenna jack on the back of your set and get programming. To receive digital television signals, some people need a converter box.
Does HD work on regular TV?
Both worked fine even when watching HD channels. So, to answer your question: Yes, with 100% certainty, a high definition cable box will work with your TV as long as the box and the TV both have composite video ports.