Invention Grant
- Patent Title: Communication apparatus and method of controlling antenna characteristics
- Patent Title (中): 控制天线特性的通信装置及方法
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Application No.: US12430382Application Date: 2009-04-27
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Publication No.: US08773244B2Publication Date: 2014-07-08
- Inventor: Katsuhiro Onozuka , Kiyotada Yokogi
- Applicant: Katsuhiro Onozuka , Kiyotada Yokogi
- Applicant Address: JP Tokyo
- Assignee: FeliCa Networks, Inc.
- Current Assignee: FeliCa Networks, Inc.
- Current Assignee Address: JP Tokyo
- Agency: K&L Gates LLP
- Priority: JP2008-119047 20080430
- Main IPC: H04Q5/22
- IPC: H04Q5/22 ; G08B23/00 ; H04B1/00 ; H04B5/00
Abstract:
There is provided a communication apparatus including a voltage detection unit for detecting an antenna end voltage of a reader or a non-contact type IC card when non-contact communicating using a load modulation of the non-contact type IC card with respect to a magnetic field signal from the reader/writer; and a characteristics control unit for changing characteristics of the antenna of the reader/writer or the non-contact type IC card when the antenna end voltage detected by the voltage detection unit reaches a predetermined first threshold value.
Public/Granted literature
- US20090273454A1 COMMUNICATION APPARATUS AND METHOD OF CONTROLLING ANTENNA CHARACTERISTICS Public/Granted day:2009-11-05
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