Patent ID: 11886656
Assignee: HIDEEP INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 7:
8. A control method of an electronic device, comprising:
sequentially transmitting, by a touch sensor, an electromagnetic signal having two or more frequencies to a stylus pen; and
determining, by a touch controller, one of the two or more frequencies as the frequency of the electromagnetic signal depending on a change in the received electromagnetic signal to operate the touch sensor,
wherein the sequentially transmitting of the electromagnetic signal having the two or more frequencies to the stylus pen includes:
sequentially applying, by the touch sensor, electromagnetic signals each having a frequency included in each of a plurality of first frequency sections divided by a first frequency unit during each of a plurality of time periods within a first period; and
sequentially applying, by the touch sensor, electromagnetic signals each having a frequency included in each of a plurality of second frequency sections divided by a second frequency unit to each of a plurality of time periods within a second period that is successive to the first period, and
wherein the first frequency unit is greater than the second frequency unit.