Random number generating method and random number generating device

A random number generating device to generate random numbers based on a thermal noise fed from a thermal noise generating source comprising:

• an amplifying means to amplify a voltage level of said thermal noise;
• a random pulse producing means to produce random pulses by comparing a voltage level of the amplified thermal noise with a reference voltage level;
• a measuring means to measure a time interval between said random pulses;
• a pulse controlling means to exclude, if said time interval is within a predetermined time, said random pulses occurred within said predetermined time and, if said time interval exceeds said predetermined time, to allow said random pulses to pass;
• and
• a random number generating means to generate random numbers based on a time interval between random pulses that are allowed to pass.

A random number generating device to generate random numbers based on a thermal noise fed from a thermal noise generating source comprising:

• an amplifier to amplify a voltage level of said thermal noise;
• a random pulse generator to generate random pulses by comparing a voltage level of the amplified thermal noise with a reference voltage level;
• a measuring device to measure a time interval between said random pulses;
• a pulse controller to exclude, if said time interval is within a predetermined time, said random pulses occurred within said predetermined time and, if said time interval exceeds said predetermined time, to allow said random pulses to pass;
• and
• a random number generator to generate random numbers based on a time interval between random pulses that are allowed to pass.

A computer program product including computer-readable media, the media comprising instructions to have a computer perform processes of generating random pulses by comparing a voltage level of a thermal noise obtained by amplifying said thermal noise from a thermal noise generating source with a reference voltage level and of generating random numbers based on a time interval between random pulses comprising:

• a process of measuring said time interval between random pulses:
• a process of, if said time interval is within a predetermined time, excluding said random pulses occurred within said predetermined time;
• and
• a process of, if said time interval exceeds said predetermined time, generating random numbers based on said time interval exceeding said predetermined time.