Exceedance counting integrating photo-diode array
US4679215A · kind A · utility
2Cited by
15References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1985 |
| Grant date | Jul 7, 1987 |
| Priority date | — |
| Expiry date | Dec 6, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C7/005
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The use of a comparator and counter associated, on-chip, with each photo-element of an array. Sensing each photo-element without discharging it and allowing each photo-element to accumulate a charge which is large relative to noise variations. These features result in a photo-detector with large signal-to-noise ratios.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.