Bitmap thermal image sensor with bolometric pixel and special noise-reduction method

Bitmap thermal image sensor with bolometric pixel and special noise-reduction method

The sensor has a signal reading circuit (CLj) with an integrator to integrate difference between a current traversing bolometric resistance and a compensation current value (Icomp) in an integration capacity value (Cint). A transistor (T1) adjusts sensibility of a pixel acting in response to voltage...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: CHAMMING'S, GILLES
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
COLORIMETRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
RADIATION PYROMETRY
TESTING
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Beschreibung
Zusammenfassung:The sensor has a signal reading circuit (CLj) with an integrator to integrate difference between a current traversing bolometric resistance and a compensation current value (Icomp) in an integration capacity value (Cint). A transistor (T1) adjusts sensibility of a pixel acting in response to voltage adjustment to change one of reference potential (Vref), integration time value (TL), polarization voltage value and compensation current value used for elaboration of output analog voltage (VS), during reading of a line to which a pixel is pertained. An independent claim is also included for a method for reducing spatial noise in a matrix heat image sensor.