Electronic device with laser marking function and laser marking method

An electronic device with a laser marking function comprising:

• at least one processor;
• a projection device coupled to the at least one processor and comprising a projection screen, wherein a plurality of microwave receivers is arranged on a plurality of predefined positions of the projection screen;
• and
• a storage device coupled to the at least one processor and storing instructions for execution by the at least one processor to cause the at least one processor to:
• control the plurality of microwave receivers to receive a first microwave transmitted by a first microwave transmitter of a laser pen and a second microwave transmitted by a second microwave transmitter of the laser pen;
• acquire time intervals between the time when the two microwave transmitters transmit the microwave and the time when each of the plurality of microwave receivers receives the microwave;
• calculate distances between the plurality of microwave receivers and the first microwave transmitter, and distances between the plurality of microwave receivers and the second microwave transmitter;
• establish a three-dimensional rectangular coordinate system according to the plurality of microwave receivers and the projection screen;
• calculate a coordinate value of a drop point formed by a laser beam transmitted from the laser pen on the projection screen, according to the coordinate values of the plurality of microwave receivers, the respective distances between the plurality of microwave receivers and the first and second microwave transmitters;
• and
• mark the drop point on the projection screen according to the coordinate value of the drop point.