Focal plane array infrared device
US4659928A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 22, 1985 |
| Grant date | Apr 21, 1987 |
| Priority date | — |
| Expiry date | Apr 22, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A focal plane array infrared device includes an optical system for focusing incoming infrared energy, a scanner for scanning the focused infrared energy onto a focal plane detector array for converting the infrared energy into electrical signals representative of the intensity of the infrared energy signals, a multiplexer for multiplexing the focal plane detector array electrical output to a dynamic preamplifier for amplification to a working level and a data processing means including a dynamic amplifier connected to the preamplifier for removing correlated noise from the information signal prior to signal processing, the dynamic amplifier including a plurality of switched capacitors and a transistor controlled by a controller whereby the incoming signals are stored in selected capacitors, amplified and combined to produce a difference signal at the output substantially equal to the focal plane detector array output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.