| 摘要 |
A physical random number generator has a bi-stable latch that operates to latch a random number bit in response to a reception of a voltage oscillating signal. When a switching device is in a first operating state, the bi-stable latch is deactivated and an oscillator is activated to generate one or more unpredictable voltage oscillation signals, which may provoke the bi-stable latch into a metastable state upon an activation of the bi-stable latch. When the switching device is in a second operating state, the oscillator is deactivated and the bi-stable latch is activated to latch a random number bit as a function of the unpredictable voltage oscillation signals, the randomness of the random number bit being enhanced by any provoking of the bi-stable latch into the metastable state by the voltage oscillating signal(s).
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