Spatio-temporal tunable pixels ROIC for multi-spectral imagers
US9521346B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2015 |
| Grant date | Dec 13, 2016 |
| Priority date | — |
| Expiry date | Jun 10, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/1847
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided is a readout integrated circuit (ROIC). The ROIC includes a memory for each of a plurality of pixels, an address selector to synchronize a subsequent bias voltage for each of the pixels, a reference voltage recover switch to subtract the initial bias voltage from an output voltage of the integrated circuit and to result an integrator voltage for a sample and hold block, and a pulse-width control circuit to prevent crosstalk of the subsequent bias voltage between first and second ones of the pixels while a pixel clock selects adjacent columns. The memory maintains an initial bias voltage for each pixel during an initial integration frame time and during a sample and hold readout processing time. The sample and hold readout processing time is utilized to write a subsequent bias voltage for each pixel for a subsequent integration frame time to allow the first one of the pixels to have a different bias voltage than the second one of the pixels inside each integration frame time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.