发明授权
US07729660B2 Communication device, non-contact type IC card mounting same, and information apparatus
有权
通信装置,非接触式IC卡安装相同,以及信息装置
- 专利标题: Communication device, non-contact type IC card mounting same, and information apparatus
- 专利标题(中): 通信装置,非接触式IC卡安装相同,以及信息装置
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申请号: US11570566申请日: 2006-04-14
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公开(公告)号: US07729660B2公开(公告)日: 2010-06-01
- 发明人: Satoru Kondo , Kenichi Kamiyama , Yukio Tanaka
- 申请人: Satoru Kondo , Kenichi Kamiyama , Yukio Tanaka
- 申请人地址: JP Tokyo
- 专利权人: Sony Corporation
- 当前专利权人: Sony Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Sonnenschein Nath & Rosenthal LLP
- 优先权: JP2005-118459 20050415
- 国际申请: PCT/JP2006/307966 WO 20060414
- 国际公布: WO2006/112410 WO 20061026
- 主分类号: H04B7/00
- IPC分类号: H04B7/00
摘要:
A communication device able to share one antenna and in addition able to sufficiently exhibit characteristics of a function as a reader, writer and a card function, a non-contact type IC card provided with that, and an information apparatus, wherein the device has a first transmission circuit 220 having first and second output terminals and outputting a carrier from the first and second output terminals in a first mode; an antenna circuit 210 including a node ND210, an inductor 211 having one end connected to the node, and having the other end connected to the second output terminal of the first transmission circuit, and a capacitor 212 connected between the node and the first output terminal of the first transmission circuit; a second transmission circuit 230 connected to the node of the antenna circuit and outputting the transmission data in a second mode; at least one reception circuit 240 connected to the node of the antenna circuit and performing reception processing with respect to data received at the antenna circuit; and a circuit switch unit 280 forming the antenna circuit as a serial resonance circuit including the inductor and the capacitor in the first mode and forming the antenna circuit as a parallel resonance circuit including the inductor and the capacitor in the second mode.