发明名称 |
Authentication system, authentication apparatus, authentication target apparatus, authentication method, method of being authenticated, program and information recording medium |
摘要 |
An observation unit of an authentication apparatus and an observation unit of an authentication target apparatus observe a radio wave from a common radio star at a common observation time. A sending unit sends information message including information on the observed radio wave, and an information reception unit receives it. An estimation unit estimates a position of the authentication target apparatus based on "the information on the radio wave observed by the observation unit" and "information on the radio wave observed by the observation unit". A retaining unit pre-retains positions of one or more authentication target apparatus(s). A determination unit checks whether a position of the authentication target apparatus pre-retained in the retaining unit and the estimated position correspond within a predetermined error range, and settles authentication for the information message as a success in a case where the positions correspond.
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申请公布号 |
US2003145202(A1) |
申请公布日期 |
2003.07.31 |
申请号 |
US20030349558 |
申请日期 |
2003.01.22 |
申请人 |
TAKAHASHI FUJINOBU;UMENO KEN;KONDO TETSURO |
发明人 |
TAKAHASHI FUJINOBU;UMENO KEN;KONDO TETSURO |
分类号 |
G09C1/00;H04L9/08;H04L9/32;(IPC1-7):H04L9/00 |
主分类号 |
G09C1/00 |
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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