Patent ID: 11937341
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F  G | IPC F  G  H

Claim 7:
8. A method of controlling a cooking apparatus
comprising a plurality of power input terminals including at least a first live terminal, a second live terminal, and a neutral terminal, a plurality of heaters, and a detection circuit connected to the plurality of power input terminals, the method comprising:
performing half-rectification of each of a first electronic signal of the power between the first live terminal and the neutral terminal and a second electronic signal of the power between the second live terminal and the neutral terminal;
outputting, from the detection circuit, a first square wave of the first electronic signal and a second square wave of the second electronic signal;
detecting falling edges of the first and second square waves output from the detection circuit;
detecting an interval between the detected falling edges of the first and second square waves;
identifying a phase difference of the input power based on the interval;
based on the phase difference being within one of a plurality of threshold ranges, identifying a voltage between the first live terminal and the second live terminal among the plurality of power input terminals based on the phase difference of the power and controlling to operate at least one heater among the plurality of heaters according to the identified voltage between the live terminals; and
based on the phase difference being outside the plurality of threshold ranges, controlling to stop the operation of the cooking apparatus.