Patent ID: 6987851

Claim:
A line driver for driving a data signal input onto a communication medium, and the line driver comprising: at least one amplifier with at least one bias supply input, a signal input and an output; a delay element accepting as an input the data signal and delaying delivery of the data signal to the signal input of the at least one line amplifier for amplification; a generator responsive to a control signal to generate varying power levels corresponding thereto on the at least one bias supply input of the at least one amplifier; a control signal generator configured to iteratively determine at an interval of duration T 1 , a peak value in a corresponding windowed portion of the data signal spanning an interval T 2 greater than T 1 in duration, and to generate the control signal corresponding to the iteratively determined peak value in advance of delivery of the data signal to the at least one amplifier, wherein the control signal generator further comprises: at least two peak detectors each with an input and an output and with corresponding inputs round-robin coupled to the data signal at staggered intervals of T 1 with respect to one another and each of the at least two peak detectors with sample windows of the duration T 2 ; and further with the corresponding outputs round-robin coupled to the generator at the sample interval T 1 with respect to one another to deliver the corresponding control signal thereto.