Spatio-temporal tunable pixels ROIC for multi-spectral imagers

摘要

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.

主权项

1. A readout integrated circuit, comprising:
a memory for each of a plurality of pixels, wherein 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, and wherein 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 a first one of the pixels to have a different bias voltage than a second one of the pixels inside each integration frame time; 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 the first and second pixels while a pixel clock selects adjacent columns.