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

Claim 0:
1. An electronic device comprising:
a touch sensor configured to sequentially transfer an electromagnetic signal having two or more frequencies to a stylus pen, and to receive an electromagnetic signal corresponding to the electromagnetic signal from the stylus pen; and
a touch controller configured to operate the touch sensor by determining one of the two or more frequencies as the frequency of the electromagnetic signal depending on a change in the received electromagnetic signal,
wherein the touch sensor is further configured to sequentially apply 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 applies 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.