Patent ID: 6415136
Filing Date: 2002-07-02
Classification: H04B

Abstract:
A method of minimizing interference between first and second communicating devices which communicate in first and second overlapping communication bands in a transaction establishment comprising the steps of:receiving a first signal in the first communication band from the first device by a controller through a first receiving circuit; connecting only a first transmitter control circuit of at least two transmitter control circuits to a transmitter by the controller in response to the first signal, wherein the first transmitter control circuit operates in the first communication band and the second transmitter control circuit operates in the second communication band; transmitting a second signal in the first communication band by the transmitter to the first device in response to control signals from the first transmitter control circuit; disconnecting the first transmitter control circuit from the transmitter by the controller following transmission of the second signal by the transmitter; receiving a third signal from the second device in the second communication band by the controller through a second receiving circuit; connecting only the second transmitter control circuit to the transmitter by the controller in response to the third signal; transmitting a fourth signal in the second communication band by the transmitter to the second device; and disconnecting the second transmitter control circuit from the transmitter by the controller following transmission of the fourth signal by the transmitter.