Invention Grant
- Patent Title: Near field communication device, electronic system having the same and method of controlling power in near field communication device
- Patent Title (中): 近场通信装置，具有相同的电子系统和近场通信装置中的电力控制方法
-
Application No.: US14482034Application Date: 2014-09-10
-
Publication No.: US09538314B2Publication Date: 2017-01-03
- Inventor: Il-Jong Song , Jun-Ho Kim , Chol-Su Yoon , Byeong-Hoon Lee
- Applicant: SAMSUNG ELECTRONICS CO., LTD.
- Applicant Address: KR Suwon-Si, Gyeonggi-Do
- Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee Address: KR Suwon-Si, Gyeonggi-Do
- Agency: F. Chau & Associates, LLC
- Priority: KR10-2013-0111325 20130916
- Main IPC: H04W4/00
- IPC: H04W4/00 ; H04B5/00 ; G06K7/10 ; H04W52/02
Abstract:
A near field communication (NFC) device includes a resonance unit and an NFC chip. The resonance unit emits an electromagnetic wave to communicate data with an external NFC card in a reader mode. The NFC chip estimates a distance between the resonance unit and the external NFC card based on an antenna voltage generated by the resonance unit while the resonance unit emits the electromagnetic wave, and adjusts a magnitude of the electromagnetic wave based on the estimated distance.
Public/Granted literature
Information query
