Ring oscillator, random number generator including the same, and operation method of random number generator
US12040805B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2022 |
| Grant date | Jul 16, 2024 |
| Priority date | — |
| Expiry date | Jul 30, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/1077
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A random number generator includes a ring oscillator, an inversion selecting circuit, and controller. The ring oscillator includes an inverter chain having at least one inverter and generates an output signal. The inversion selecting circuit controlling a phase inverter configured to invert a signal of the inverter chain. The controller is configured to operate the inversion selecting circuit to provide an output of the first phase inverter to the inverter chain during a first operation mode to measure a frequency of the ring oscillator and operate the inversion selecting circuit to not provide the output of the phase inverter during a second operation mode for generating a random number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.