Abstract: A power supply arrangement for a distributed entertainment system. The power supply arrangement comprises: first and second power supplies, which are floating in relation to each other; a first electrical connector having a distributed impedance for connecting zone apparatus to the first power supply; and a signal processor which is operative to draw power from the second power supply and to transmit electrical signals to the zone apparatus and/or receive electrical signals from the zone apparatus, and in which the zone apparatus is operative to draw current from the first power supply, thereby causing a potential drop across the distributed impedance of the first electrical connector which in turn changes a voltage of a power supply rail at the zone apparatus, characterized by a second electrical connector for connecting the power supply rail of the zone apparatus to a power supply rail of the second power supply.

Abstract: A power supply arrangement for a distributed entertainment system. The power supply arrangement comprises: first and second power supplies, which are floating in relation to each other; a first electrical connector having a distributed impedance for connecting zone apparatus to the first power supply, a signal processor which is operative to draw power from the second power supply and to transmit electrical signals to the zone apparatus and/or receive electrical signals from the zone apparatus, and in which the zone apparatus is operative to draw current from the first power supply thereby causing a potential drop across the distributed impedance of the first electrical connector which in turn changes a voltage of a power supply rail at the zone apparatus, characterised by a second electrical connector for connecting the power supply rail of the zone apparatus to a power supply rail of the second power supply.

Abstract: A distributed entertainment system, particularly but not exclusively a distributed entertainment system for domestic use. The distributed entertainment system comprises: at least one command unit for one or more user zones, the or each command unit being configured to receive commands from a user; and a hub for receiving command signals from the or each command unit, the hub having an output for transmitting control signals for controlling audio/visual source equipment in dependence upon received command signals; characterised by a control signal storage unit for storing dedicated control signals specific to audio/visual equipment to be controlled, and is characterised in that the hub has an input facility for receiving and storing dedicated control signals from the control signal storage unit, whereby the hub is configured to transmit dedicated control signals in dependence upon received command signals.