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US 7,405,423 B2Granted
Random number generating device
AssigneeKabushiki Kaisha Toshiba
InventorsTetsufumi Tanamoto, Shinobu Fujita
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Abstract
The objective is to provide a random number generating device having a smaller circuit size and a smaller value of output bias. The random number generating device includes a pair of first and second current paths arranged in parallel with each other, and a pair of first and second fine particles, which can mutually exchange charges, and are located in the vicinity of the first and second current paths.
Claims12
A random number generating device comprising:
- a pair of first and second current paths arranged in parallel with each other;
- a pair of first and second fine particles which are located in the vicinity of the first and second current paths, and which can mutually exchange charges, at least one of the first and second fine particles being electrically coupled to one of the first and second current paths;
- and
- a random number generator including a detection circuit that detects a difference between currents flowing through the first current path and the second current path, and that generates a random number based on the detected difference.
1 more element
Dependencies are inferred from the claim text.