Abstract: Low-noise block downconverter (LNB) of a satellite dish receives a request from a satellite broadcast signal receiver to transmit a signal for a channel to the receiver. If the channel requested by the receiver is different from a channel requested by another satellite broadcast signal receiver, the LNB in response provides a signal for the channel requested by the receiver at a frequency that is allocated to the receiver. If the channel requested by the receiver is the same as a channel requested by another satellite broadcast signal receiver, the LNB provides an instruction to the requesting receiver for the receiver to retune to the frequency used for the other satellite broadcast signal receiver. The requesting receiver can then receive the signal for said channel which is being provided by the LNB at the frequency used for the other satellite broadcast signal receiver.

Abstract: Powering on a plurality of display devices is provided, wherein each of the display devices at least comprises a main processor and a visual display unit under control of the main processor. The approach comprises powering on the main processors of at least a majority of the display devices at a first time, and powering on the visual display units of said majority of the display devices at a later time. Powering down such a plurality of display devices is provided by performing a similar sequence of operations in reverse temporal order. A server connected in communication with a plurality of display devices is configured to power the main processor of at least a majority of the display devices on or off at a different time from powering the visual display unit of the same display devices respectively on or off.

Abstract: Processing apparatus for driving a display screen having one or more visible light pixels for outputting visible light and one or more invisible light pixels for outputting invisible light. The processing apparatus has an input for receiving video image and audio signals. A video processor processes input video image signals received at the input and provides corresponding drive signals for driving the one or more visible light pixels of the display screen to output visible light so as to display the video image. An audio processor processes input audio signals received at the input and provides corresponding drive signals for driving the one or more invisible light pixels of the display screen to output invisible light which encodes the audio.

Abstract: Low-noise block downconverter (LNB) of a satellite dish receives a request from a satellite broadcast signal receiver to transmit a signal for a channel to the receiver. If the channel requested by the receiver is different from a channel requested by another satellite broadcast signal receiver, the LNB in response provides a signal for the channel requested by the receiver at a frequency that is allocated to the receiver. If the channel requested by the receiver is the same as a channel requested by another satellite broadcast signal receiver, the LNB provides an instruction to the requesting receiver for the receiver to retune to the frequency used for the other satellite broadcast signal receiver. The requesting receiver can then receive the signal for said channel which is being provided by the LNB at the frequency used for the other satellite broadcast signal receiver.