METHOD OF AUTHENTICATING ELECTRONIC PRODUCTS IN DIFFERENT OPERATING MODES

摘要

FIELD: physics.;SUBSTANCE: invention relates to electronic engineering and specifically to a method of authenticating electronic products (packaged devices, units, modules), having at least one contact or socket for feeding an input signal, one contact or socket for tapping an output signal, a contact or socket for supplying power and not less than one contact or socket for a control signal. The method is characterised by that the input stimulus used is a signal with frequency in the range of ƒ₁ to ƒ₂, selected such that characteristic resonance frequencies of the inner volume of the housing $ƒi~\frac{c}{L_i},\mathop{\mathrm{image}}$ where c is the speed of light, L_i denotes characteristic dimensions (height, width, depth) of the housing of the analysed item, are less than the frequency ƒ₂. The spectrum of the output signal is recorded and then compared with the spectrum of a reference output signal obtained using a sample with an internal structure from the same batch of items analysed in detail in advance in different operating modes of the item, said modes being defined by the control signal.;EFFECT: non-destructive authentication of devices and faster analysis.;12 cl, 4 dwg