True random number generator and true random number generation method

The invention discloses a true random number generator and a true random number generation method. The true random number generator comprises a sampling circuit and a random number generating circuit,wherein the sampling circuit is used for sampling N voltages determined by N capacitors according to a clock signal so as to generate N sampling values, and N is a positive integer; the random numbergeneration circuit is used for generating a random number according to at least one part of the N sampling values. 本发明揭露了一种真随机数产生器与真随机数产生方法。该真随机数产生器包含一采样电路与一随机数产生电路。该采样电路用来依据一时钟信号采样N个电容所决定的N个电压，以产生N个采样值，其中该N为正整数。该随机数产生电路用来依据该N个采样值的至少一部分产生一随机数。