Patent ID: 7071471
Filing Date: 2006-07-04
Classification: G01J,H04N

Abstract:
1. Device for detecting electromagnetic radiations implementing a detection circuit associated with a reading circuit, the detection circuit comprising an array of detection pixels, each of said pixels comprising a thermal detector of biased bolometric type, and delivering an electric current signal representative of detected radiation, said current signal undergoing a double baselining, respectively: a global baselining carried out by means of a thermally isolated bolometer, ensuring extraction from said electric current signal, of a first current of constant value inherent to biasing of the thermal detector, and an adaptive baselining specific to each of the pixels, carried out by means of a programmable current generator, specific to each of the pixels, generating a current for subtraction from said signal, as a function of dispersion inherent to the pixel considered relative to a reference signal and stored in an associated memory, wherein said associated memory comprises an internal memory physically implanted at a level of each of said pixels.