A method comprising: entering a first operational state in a device in response to a user input received by a standby processing circuit in the device, the first operational state powering a user input circuit and a signal receiver circuit of the device; detecting the presence of a signal received at an input to the device, the received signal to be output from the device for display on a display device; entering a second operational state in the device if the presence of the signal is detected, the second operational state powering a signal processing circuit in the device for outputting the received signal, the second operational state not powering on all circuits in the device; and wherein the standby processing circuit places the device in a third operational state from the first operational state after not detecting, by the signal receiver circuit, the presence of the signal at the input to the device for a period of time, in the third operational state, only the circuits needed for user input to the device and the standby processing circuit being powered on, the signal receiver circuit being powered off in third operational state, the method further comprising entering a fourth operational state in response to a user input, the fourth operational state entered from one of the first operational state, the second operational, and the third operational state, the fourth operational state powering all circuits in the device, wherein in the fourth operational state, the standby processor, the signal processing circuit and a main controller in the device are powered on, wherein the main controller is powered off in the first operational state, in the second operational state and in the third operational state. entering a first operational state in a device in response to a user input received by a standby processing circuit in the device, the first operational state powering a user input circuit and a signal receiver circuit of the device; detecting the presence of a signal received at an input to the device, the received signal to be output from the device for display on a display device; entering a second operational state in the device if the presence of the signal is detected, the second operational state powering a signal processing circuit in the device for outputting the received signal, the second operational state not powering on all circuits in the device; and wherein the standby processing circuit places the device in a third operational state from the first operational state after not detecting, by the signal receiver circuit, the presence of the signal at the input to the device for a period of time, in the third operational state, only the circuits needed for user input to the device and the standby processing circuit being powered on, the signal receiver circuit being powered off in third operational state, the method further comprising entering a fourth operational state in response to a user input, the fourth operational state entered from one of the first operational state, the second operational, and the third operational state, the fourth operational state powering all circuits in the device, wherein in the fourth operational state, the standby processor, the signal processing circuit and a main controller in the device are powered on, wherein the main controller is powered off in the first operational state, in the second operational state and in the third operational state.