发明名称 |
COMMUNICATION SYSTEM UND COMMUNICATION METHOD |
摘要 |
The present invention relates to a communication system and communication method which enable various types of near field communication, and a data processing apparatus. NFC communication apparatuses 1 to 3 have two features in that each can perform communication in two communication modes and that each can perform data transmission at a plurality of transfer rates. The two communication modes consist of a passive mode and an active mode. In the passive mode, between the NFC communication apparatuses 1 and 2, for example, the NFC communication apparatus 1 transmits data to the NFC communication apparatus 2 by modulating electromagnetic waves generated by itself, while the NFC communication apparatus 2 transmits data to the NFC communication apparatus 1 by performing load modulation on the electromagnetic waves generated by the NFC communication apparatus 1. Alternatively, in the active mode, either of the NFC communication apparatuses 1 and 2 transmits data by modulating electromagnetic waves generated by itself. The present invention can be applied to, for example, an IC card system, etc. <IMAGE> |
申请公布号 |
EP1575183(A1) |
申请公布日期 |
2005.09.14 |
申请号 |
EP20030758970 |
申请日期 |
2003.10.28 |
申请人 |
SONY CORPORATION |
发明人 |
TAKAYAMA, YOSHIHISA,;KUSAKABE, SUSUMU,;TSURUMI, KAZUSHIGE,;MORITA, TADASHI,;FUJII, KUNIHIDE, |
分类号 |
G06K17/00;G06K19/07;H04B5/02 |
主分类号 |
G06K17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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