Patent ID: 7792231

Claim:
A method for transferring digital data between units that are moving relative to one another, said digital data accumulating in parallel at one of said units, said method comprising the steps of: at said one of said units, dividing the data accumulating in parallel, and to be transferred to the other of said units, into a plurality of data sets, respectively to be transferred in data packets; at said one of said units, inspecting each data set as to its potential or actual tendency for generation of electromagnetic interference (EMI) radiation and, for each data packet, selecting a modulation pattern therefor, dependent on a degree of its tendency to generate EMI radiation, that will substantially reduce said EMI radiation arising upon transfer of that data set; at said one of said units and before transferring each data set, modulating each data set with the modulation pattern selected therefor, thereby producing modulated data sets; transferring the modulated data sets in respective data packets from said one of said units to the other of said units; and at said other of said units, demodulating the modulated data in the respective data packets.