发明名称 |
INFORMATION PROCESSING APPARATUS, RADIO COMMUNICATION SYSTEM, AND RADIO COMMUNICATION METHOD |
摘要 |
An information-processing apparatus shown in FIG. 4 is a wireless communication apparatus for communicating prescribed data in wireless with a back-scattering communication scheme, in which a tag (10) for receiving a carrier wave signal Sf having a frequency of 2.45 GHz and transmitting response signal Sf (D) obtained by modulating the carrier wave signal Sf based on the data and a tag reader (20) for transmitting a carrier wave signal to the tag (10) and receiving and signal-processing a response composite signal that is returned from the tag (10) are provided. This tag reader (20) has a carrier-wave-compensating circuit (30) that compares a phase of the carrier wave signal in transmitting the carrier wave signal and a phase of the carrier wave signal in receiving the carrier wave signal and eliminates a carrier wave composite signal that is not synchronized with the carrier wave signal in transmitting the carrier wave signal based on a comparison result thereof.
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申请公布号 |
EP1677428(A1) |
申请公布日期 |
2006.07.05 |
申请号 |
EP20040788457 |
申请日期 |
2004.09.29 |
申请人 |
SONY CORPORATION |
发明人 |
TAKEUCHI, ISAO |
分类号 |
H04B1/59;G06K7/00;G06K7/10;G06K17/00;H04B5/00;H04B5/02;(IPC1-7):H04B1/59 |
主分类号 |
H04B1/59 |
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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