Patent ID: 8291123

Claim:
A system for sharing a human-computer interface of a legacy device, the human-computer interface allowing a user to enter signals and to supply signals to the user, the system comprising: an expansion radio configured to receive control codes entered via the human-computer interface, the expansion radio comprising a transmitter and a receiver; and a logic device configured to receive input signals from the human-computer interface via an input link and to supply output signals to the human-computer interface via an output link, the logic device providing shared usage of the human-computer interface between the legacy device and the expansion radio by selective routing of input and output signals, wherein the logic device is configured to couple the input link to the expansion radio during operation to continuously supply the input signals to the expansion radio; wherein the expansion radio is configured to continuously monitor the input signals for control codes designating usage of the human-computer interface and to control an operating state of the logic device in response to control codes from the human computer interface, such that: the expansion radio is configured to control the logic device to couple the expansion radio to the output link and decouple the legacy device from the input link in response to the expansion radio receiving a control code designating usage of the human-computer interface by the expansion radio; and the expansion radio is configured to control the logic device to couple the legacy device to the input link and decouple the expansion radio from the output link in response to the expansion radio receiving a control code designating usage of the human-computer interface by the legacy device.