Patent ID: 7629813

Claim:
A method for dynamically refreshing the inputs of a differential receiver, comprising: while a differential transmitter, which is coupled to the differential receiver, is not transmitting data, applying substantially equal voltages to the outputs of the differential transmitter so that the differential voltage on the outputs of the differential transmitter is substantially zero; simultaneously refreshing the inputs of the differential receiver by applying substantially equal voltages to the inputs of the differential receiver so that the differential voltage on the inputs of the differential receiver is substantially zero; ceasing to apply the substantially equal voltages to the inputs of the differential receiver, thereby causing the inputs of the differential receiver to float at substantially equal voltages, wherein a node that floats is no longer driven conductively by any source; then ceasing to apply the substantially equal voltages to the outputs of the differential transmitter; and resuming the transmission of data from the differential transmitter to the differential receiver; wherein the differential transmitter is coupled to the differential receiver through a DC blocking mechanism, which prevents a DC voltage on the differential transmitter from reaching the differential receiver.