Circuit arrangement for an optical monitoring system and method for optical monitoring
US10925497B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2016 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | Feb 28, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/07
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A circuit arrangement for an optical monitoring system comprises a driver circuit configured to generate at least one driving signal for driving a light source and a detector terminal for receiving a detector current. The circuit arrangement further comprises a current source configured and arranged to generate at the detector terminal a reduction current. The reduction current has an amplitude which is given by a base value whenever none of the least one driving signal assumes a value suitable for activating the light source and by a sum of the base value and a reduction value otherwise. The circuit arrangement also comprises a processing unit configured to generate an output signal depending on a combination of the detector current and the reduction current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.