Method and apparatus for random sequence generator
US6414558B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2000 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Sep 18, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B29/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An apparatus is described comprising a noise source coupled to an input of a gain stage. The apparatus also includes a noise shaping stage that forms a shaped noise signal by reducing 1/f noise introduced by the gain stage. The noise shaping stage has an input coupled to an output of the gain stage. The apparatus also has a decision circuit that decides whether the shaped noise signal, or a signal derived from the shaped noise signal corresponds to a 1 or a 0. A method is described that amplifies a first noise signal to produce a second noise signal. A shaped noise signal is formed by reducing 1/f noise introduced to the second noise signal by the amplifying. A random sequence is generated by comparing, against a reference, the shaped noise signal or a signal derived from the shaped noise signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.