Patent ID: 7339396

Claim:
A method of operating an electronic interface driver, comprising: first generating at least one interface signal; providing said at least one interface signal to at least one output terminal of said driver having predetermined loading characteristics; and second generating at least one additional signal for delivery to a load substantially equal to that of said predetermined loading characteristics of said at least one output terminal, wherein said at least one additional signal is coded in dependence on said at least one interface signal such that among the totality of said at least one interface signal and said at least one additional signal, a quantity of transitions of said totality of signals is substantially constant for repeated periods, such that as a number of transitions of said at least one interface signal changes in said periods, a number of transitions of said at least one additional signal also changes to make said quantity of transitions of said totality of signals substantially constant, whereby data-dependent variation in the transient-associated energy of the totality of the signals is substantially removed.