Invention Grant
US09218518B2 Method of operating contactless IC card reader, detection circuit of contactless IC card reader, contactless IC card reader and card system including the same
有权
非接触式IC卡读卡器的操作方法，非接触式IC卡读卡器的检测电路，非接触式IC卡读卡器和卡片系统等
- Patent Title: Method of operating contactless IC card reader, detection circuit of contactless IC card reader, contactless IC card reader and card system including the same
- Patent Title (中): 非接触式IC卡读卡器的操作方法，非接触式IC卡读卡器的检测电路，非接触式IC卡读卡器和卡片系统等
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Application No.: US14206276Application Date: 2014-03-12
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Publication No.: US09218518B2Publication Date: 2015-12-22
- Inventor: Jun-Ho Kim , Hyoung-Hwan Roh , Il-Jong Song
- Applicant: Jun-Ho Kim , Hyoung-Hwan Roh , Il-Jong Song
- 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: Lee & Morse, P.C.
- Priority: KR10-2013-0026722 20130313
- Main IPC: G06K19/06
- IPC: G06K19/06 ; G06K7/08 ; G06K7/10
Abstract:
A method of operating a contactless integrated circuit (IC) card reader includes calculating a first transition time of at least one first magnetic pulse during a first transition interval and calculating a second transition time of a second magnetic pulse during a second transition interval. The first transition time is calculated in a calibration phase, and the second transition time is calculated in a detection phase. A contactless IC card is determined to be within a communication rage of the reader based on a comparison of the first and second transition times.
Public/Granted literature
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