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US 7,124,157 B2Granted
Random number generator
AssigneeHMI Co., Ltd.
InventorKatsunori Ikake
Life of this patent
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Abstract
A random number generator having a simple construction which generates physical random numbers necessary for encryption. The random number generator has an amplifier to amplify noise signals generated from a noise source and digitizer to digitize the amplified noise signals. The digitizer includes a serial register.
Claims15
A random number generator comprising:
- an amplifier configured to amplify noise signals generated from a noise source;
- a digitizer configured to digitize the amplified noise signals;
- and
- a bit masking section configured to mask some of generated random number data to output other data,
- wherein said digitizer comprises a serial register and said bit masking section masks the bits specified by an external device.
2 more elements
A random number generator comprising:
- an amplifier configured to amplify noise signals generated from a noise source;
- a digitizer configured to digitize the amplified noise signals;
- and
- a memory configured to store IDs for electronic authentication and generated random number data in the random number generator,
- wherein said digitizer comprises a serial register.
2 more elements
Dependencies are inferred from the claim text.