Random number generator and method for generating a random number
US7117233B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 2003 |
| Grant date | Oct 3, 2006 |
| Priority date | — |
| Expiry date | Mar 18, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F7/58
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A random number generator includes a noise signal generating device for supplying a noise signal, a sampling device connected between an output of the noise signal generating device and an output of the random number generator and sampling the noise signal in a sampling state and not sampling the noise signal in an idle state. The random number generator further includes a control oscillator for supplying a control alternating signal, the frequency of the control alternating signal of the control oscillator not being rigidly coupled to the frequency of the noise signal. The random number generator further includes an enabling device which puts the sampling device in the sampling state when the noise signal or the signal derived from the noise signal is in a first trigger state, and when, subsequently, the control alternating signal of the control oscillator is in a second trigger state. This is to ensure that the frequency of the output samples of the random number generator depends on the frequency of the noise signal, whereas the phase position is determined by the frequency of the control oscillator. Thus, the frequency of the output samples can be set and adjusted to existing r…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.