| 摘要 |
The present invention relates to a random signal generator (10) comprising means (11, 12, 13) for converting an electronic noise (N, N1, N2) into a logic signal (RS) whose value depends on the random fluctuations of the electronic noise (N). According to one embodiment, the generator (10) comprises at least two delay lines (11, 12) having initially balanced time constants (T). The two delay lines (11, 12) receive a pulsed reference signal (Hr) at input and at least one of the delay lines (11, 12) receives an electronic noise (N1, N2) causing its time constant (T) to fluctuate (DELTAt). The temporal lag between the two pulsed signals (S1, S2) is detected by a circuit (13) delivering a logic signal (RS) whose value is a function of the relative lag between the two pulsed signals (S1, S2). Advantageously, the electronic noise (N1, N2) is a differential noise taken at two points (GND1, GND2) of a ground plane or two points (PV1, PV2) of an electrical supply plane.
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