The device receiver of the digital television, which in Iran to which decoder, i.e. the receiver, too, they say. (STB)A device, system information that usually has a TV tuner, for input and output to a TV. this device, signals from an external source such as cable, Ethernet, etc. LNB, cable, coaxial cable, or even antenna, analog receive, and then it will decrypt the and for TV, sends, etc. digital receiver or decoder in a variety for support, and the use of satellite TV, terrestrial TV, TV, internet, and cable TV production. in Iran, normally to receptors terrestrial TV the same "Digital receiver" is said to be, while to the receiver, , satellite TV, "decoder", they say.