The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 03, 2017
Filed:
Sep. 10, 2014
Applicant:
Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Inventors:
Il-Jong Song, Suwon-si, KR;
Jun-Ho Kim, Seongnam-si, KR;
Chol-Su Yoon, Yongin-si, KR;
Byeong-Hoon Lee, Seoul, KR;
Assignee:
SAMSUNG ELECTRONICS CO., LTD., Suwon-Si, Gyeonggi-Do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 4/00 (2009.01); H04B 5/00 (2006.01); G06K 7/10 (2006.01); H04W 52/02 (2009.01);
U.S. Cl.
CPC ...
H04W 4/008 (2013.01); G06K 7/10217 (2013.01); H04B 5/0075 (2013.01); H04W 52/0241 (2013.01); H04W 52/0245 (2013.01); Y02B 60/50 (2013.01);
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.