When a target enters this area, it deflects part of the diffused beam back ... used by triangulation-based background suppression sensors. Ultrasonic proximity sensors use sound waves to detect ...

They are using ultrasonic sensors that continuously send sound pulses ... a short training session where they try to move various parts of the hand and fingers. The activity patterns generated ...

Tesla announced removing ultrasonic sensors from its vehicles in October last year, promising that Tesla Vision would offer the same functionality. Nevertheless, despite some tentative moves ...