Patent ID: 8721172

Claim:
A method comprising calibrating an electronic chip to detect a heat pattern, wherein calibrating said electronic chip comprises placing a normal transducer of the chip to be calibrated in contact with a first element having a first thermal characteristic, the normal transducer being a transducer of time-related temperature variation, measuring a corresponding time-related temperature variation ΔT 1 with the normal transducer, placing a calibration transducer of the chip to be calibrated in contact with the first element, measuring a corresponding time-related temperature variation ΔT c with the calibration transducer, the calibration transducer having thermal characteristics different from those of the normal transducer so as to measure a temperature variation ΔT c that differs from the variation ΔT 1 , and calibrating the chip to be calibrated on the basis of the measured variations ΔT 1 and ΔT c , wherein calibrating the chip comprises: determining a temperature variation ΔT 2 corresponding to a temperature variation that would be measured by the normal transducer of the chip to be calibrated if the chip to be calibrated were to be put into contact with a second element having a second thermal characteristic, wherein determining the temperature variation is carried out on the basis of the measured variations ΔT 1 and ΔT c and a predetermined relationship between the variations ΔT 1 , ΔT c and ΔT 2 , and setting the chip to be calibrated on the basis of the determined variation ΔT 2 .