SENSOR KEYBOARD ON SURFACE ACOUSTIC WAVES Russian patent published in 2017 - IPC G06F3/02 

FIELD: data input devices.

SUBSTANCE: invention relates to contactless data input devices. Device includes a working panel, at corners of which there are at least two piezoelectric generators of surface acoustic waves and at least two piezoelectric receivers, converting a stream of surface acoustic waves into electric signals, system of reflectors arranged along perimeter of working panel, controller, connected with piezoelectric receivers, system of support elements arranged on surface of working panel for separation of continuous flow of surface acoustic wave on horizontal and vertical perpendicular streams, forming on surface of working panel a coordinate matrix of a keyboard, face film with keys,providing upon their pressing contact with working panel resting on support elements to form an air gap with working panel, wherein coordinate matrix of keyboard along horizontal and vertical axis corresponds to rows and columns of keyboard.

EFFECT: technical result consists in creation of a sensor keyboard on surface acoustic waves with longer service life at time between failures.

17 cl, 6 dwg