PROXIMITY SENSING DEVICE

Abstract: the present disclosure relates to a proximity capture device that includes a proximity sensor having a light source and a light detector. the light detector includes at least one first photodiode configured to generate a first signal when it detects a first light signal emitted by the light source and reflected by an object and one second photodiode configured to generate a second signal when it detects a second light signal emitted by the light source and reflected by the object. the proximity sensor is configured to deliver an output signal based on weighting, with a weighting coefficient, the first signal differently from the second signal. the proximity capture device includes a control circuit configured to provide the weighting coefficient to the proximity sensor and receive the output signal, and to trigger from a first state in which the weighting coefficient has a first value, to a second state when the output signal crosses a first threshold; in the second state, apply to the weighting coefficient a second value different from the first value; and compare the output signal obtained by applying the second value and a second threshold so as to trigger from the second state to a third state if the output signal is less than the second threshold, or to trigger from the second state to a fourth state if the output signal is higher than the second threshold.

Inventor(s): Charlotte Milanetto, Christophe Premont

CPC Classification: G01S7/4873 (Extracting wanted echo signals {, e.g. pulse detection})

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