公开(公告)号：US20150168466A1

公开(公告)日：2015-06-18

申请号：US14557825

申请日：2014-12-02

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sung-soo PARK ,  Gwan-hyung KIM ,  Byung-jik KIM

IPC: G01R23/02 ,  G01B7/004

CPC classification number: G01R23/02 ,  G01B7/004 ,  G06F3/03545 ,  G06F3/0416 ,  G06F3/044 ,  G06F3/046 ,  G06F2203/04104 ,  G06F2203/04105 ,  G06F2203/04106

Abstract: An electronic apparatus for measuring a frequency of an electromagnetic signal emitted from a coordinate indicating device contacting a sensor pad, and method are provided. The electronic apparatus includes a signal receiving unit that receives the electromagnetic signal, a band-pass filter unit including a pair of band-pass filters that generates a first filtered signal and a second filtered signal by respectively filtering the electromagnetic signal in a first frequency range and a second frequency range corresponding to a center frequency of the coordinate indicating device, and a controller that acquires a frequency value of the electromagnetic signal based on a ratio value between the first filtered signal and the second filtered signal.

Abstract translation: 提供一种用于测量从与传感器垫接触的坐标指示装置发射的电磁信号的频率的电子装置，以及方法。 电子设备包括接收电磁信号的信号接收单元，包括一对带通滤波器的带通滤波器单元，该带通滤波器单元通过分别在第一频率范围内滤波电磁信号来产生第一滤波信号和第二滤波信号 以及对应于坐标指示装置的中心频率的第二频率范围，以及基于第一滤波信号和第二滤波信号之间的比值获取电磁信号的频率值的控制器。