I am not talking about Internet TV set top box (XBMC) using Raspberry Pi.I want to assemble one TV set top using Raspberry Pi. Is it possible? If it is then please tell what components are required?
For example we use Raspberry Pi GPIO to modify raspberry for a certain use, like as a PC, a tab, as a picture frame, as a motion detector, as a home automation system. Same as I want to use it as a TV set top box (https://en.wikipedia.org/wiki/Set-top_box).
TV set top box
A set-top box (STB) or set-top unit (STU) is an information appliance device that generally contains a TV-tuner input (As somebody questioned me about using Television Tuner Tag) 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 the television screen or other display device.