ULTRASCHALLBILDGEBUNGSVORRICHTUNG ZUM LESEN UND DECODIEREN VON MASCHINENLESBAREN MATRIXSYMBOLEN

摘要

There is provided an apparatus and method for reading matrix codes comprising an ultrasound transducer (20) which comprises transmitter and receiver electrodes, a receiver unit (24) connected to the receiver electrodes for processing the signals received by the receiver electrodes, and a transmitter module (21) connected to the transmitter electrodes, the transmitter module transferring an electronic signal to the transducer, where the signal shape is selected between a number of signal shapes according to the characteristics of the matrix code to be read.