Single sensor proximity detector
    7.
    发明授权

    公开(公告)号:US10136399B1

    公开(公告)日:2018-11-20

    申请号:US15868509

    申请日:2018-01-11

    发明人: Chaouki Rouaissia

    摘要: A capacitive proximity detector for use in a connected portable device such as a telephone, laptop or tablet, in which the capacity seen by the sensor electrode is compared with four thresholds: a proximity threshold, set lower than the other, to generate a general proximity flag, and a body detection threshold set higher than the other arranged to generate a body detection flag that indicates that the object in proximity is a part of a human body. Two object detection thresholds in the region between the proximity threshold and the body threshold define a region in which the detector can decide whether the object in proximity is an inanimate object, based on the time variation of the capacity.