Method and apparatus for measuring low power signals
US5959291A · kind A · utility
228Cited by
8References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 25, 1998 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Jun 25, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J1/44
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for measuring very low light signals including integrating a signal from a photo diode, avalanche photo diode, photomultiplier tube or the like, digitally sampling the integrator output more than two times during each integration period, fitting a curve to the multiple digitized readings to calculate the integration slope for each integration period and determining the original signal from the calculated integration slope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.