Patent ID: 7058739

Claim:
A data communication bus system comprising: a wired communication bus; a host designed to manage connection and disconnection of devices to and from the wired communication bus, the host being arranged for detection of a presence of an active device from an electrical connection to the bus made by an active device, a hub connected to the host via the bus, the hub comprising a first wireless transceiver; a wirelessly coupled device with a second wireless transceiver for communication with the first transceiver, the hub being arranged to simulate the electrical connection in response to reception of a wireless signal from the wirelessly coupled device; wherein the hub is configured for switching on the first wireless transceiver intermittently; and wherein the second wireless transceiver repeatedly transmits pulses for establishing said communication with the first transceiver, the first wireless transceiver being activated to simulate the electrical connection to the host when one of said pulses occurs when the first wireless transceiver is switched on by the hub.