公开(公告)号：US20180260045A1

公开(公告)日：2018-09-13

申请号：US15814137

申请日：2017-11-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyung-hoon LEE ,  Sang-pil NAM ,  Michael CHOI

IPC: G06F3/0354 ,  G06F3/041 ,  G06F3/044

CPC classification number: G06F3/03545 ,  G06F3/03547 ,  G06F3/0418 ,  G06F3/044 ,  G06F2203/04104 ,  G06F2203/04108

Abstract: A pointer detection device for processing an input signal varying according to a touch of a pointer includes: a mixer configured to generate a first output signal by heterodyning the input signal according to a frequency of a local oscillator; and a filter configured to output a second output signal by filtering the first output signal, wherein the mixer is configured to shift a frequency band corresponding to the pointer to a pass band of the filter.