Random number generation apparatus and random number generation method
US7020283B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2000 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | Jul 20, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F7/582
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The random number generating apparatus includes as a random number generation block: an A/D converter for converting a pick-up signal output from a pick-up block, into a digital image; a memory where the digital image is stored as pixel values; and a random number generator for extracting a digital data from pixel values of a plurality of pixels within the digital image of the pick-up signal output when no subject is present from the pick-up block stored in the memory and generating a random number from the digital data correlated to the plurality of pixels. Thus, it is possible to generate a random number having a long periodicity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.