Charge injection circuit having impedance conversion means
US5093589A · kind A · utility
3Cited by
9References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1991 |
| Grant date | Mar 3, 1992 |
| Priority date | — |
| Expiry date | Mar 15, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/1575
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A charge injection circuit for injecting a charge to a signal processing circuit has a photo-voltaic element for generating a photocurrent when an infrared light is received, a field effect transistor used for injecting the charge to the signal processing circuit, and an impedance conversion circuit for feeding back an output of the field effect transistor to a substrate potential of the photo-voltaic element. The impedance conversion circuit has a gain which is greater than zero and less than or equal to one.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.