发明名称 |
Information acquisition device, information providing device, and information providing system |
摘要 |
An information acquisition device for acquiring digital Information includes: a first transmission unit (14) having directivity and transmitting by wireless an information request signal to be transmitted in a direction of the directivity; an information addition unit (13) adding at least one piece of address information to the information request signal to be transmitted; a reception unit (15) receiving a radio signal transmitted by wireless in response to the information request signal transmitted by the first transmission unit, and acquiring information contained in the signal; an information storage unit (16) which is built in the information acquisition device or attached to the device as removable from the device, and can store all or a part of information acquired by the reception unit; and an operation unit (11) issuing an instruction to start an information requesting operation. The reception unit (15) has no directivity or has broader directivity than the first transmission unit. |
申请公布号 |
US8170602(B2) |
申请公布日期 |
2012.05.01 |
申请号 |
US20040576236 |
申请日期 |
2004.10.18 |
申请人 |
WADA TOSHIAKI;NAKANO KENJI;OLYMPUS CORPORATION |
发明人 |
WADA TOSHIAKI;NAKANO KENJI |
分类号 |
H04B7/00;H04B7/26;H04M1/00;H04M1/725;H04N5/225;H04N5/232 |
主分类号 |
H04B7/00 |
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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