Method for light-to-frequency conversion and light-to-frequency converter arrangement
US11268852B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2019 |
| Grant date | Mar 8, 2022 |
| Priority date | — |
| Expiry date | Apr 1, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2001/4426
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for light-to-frequency conversion comprises the steps of illuminating a photodiode by a light source, generating a photocurrent by means of the photodiode, converting the photocurrent into a digital comparator output signal depending on a first clock signal, generating a first count comprising an integer number of counts, where the generation of the first count depends on the first clock signal, generating a second count which relates to the time interval between at least two counts of the first count, and determining the frequency of a repeating pattern in the intensity of electromagnetic radiation emitted by the light source and detected by the photodiode from the first count and the second count. Furthermore, a light-to-frequency converter arrangement is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.