Dual well read-out integrated circuit (ROIC)
US8581168B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2011 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Jan 30, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/77
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A single camera capable of capturing high speed laser return pulses for a target, as well as provide imaging information on the background of the target. This capability is enabled by having a read-out integrated circuit (ROIC) capable of extracting both types of information from a pixel of a focal plane array (FPA). Further, an ROIC topology that allows for the ability to distinguish between high frequency and low frequency signal paths, and provide supporting circuitry to process the two paths separately. One path may integrate the low frequency background scene to provide a high fidelity image of the scene. The second path may process high frequency noise and multiple laser pulse returns within a frame. These two paths may be combined to provide a background image with a superimposed laser return.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.