发明名称 |
Information terminal apparatus, information processing apparatus and information communication system |
摘要 |
When transmitting position/time information calculated by means of a GPS function to a server apparatus, authentication is carried out with the server apparatus. The position/time information may be certified as legitimate measured by a portable apparatus with a GPS reception function employed by a user. When transmitting information related to the position and the time acquired from a portable phone terminal having the GPS function and a network function by means of the GPS function to the server apparatus, authentication is carried out between the portable phone terminal and the server apparatus. The position/time information is transmitted to the server apparatus, only if the server apparatus is authenticated as a legitimate counterpart for connection. A secret key holding section is provided for holding different secret keys for different apparatuses. The position/time information measured based on an electromagnetic wave received from a positioning satellite is digitally signed by means of the secret key. The identification information and the position/time information having the digital signature are then transmitted to a counterpart.
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申请公布号 |
US8099772(B2) |
申请公布日期 |
2012.01.17 |
申请号 |
US20080128473 |
申请日期 |
2008.05.28 |
申请人 |
TAKADA MASAYUKI;MUTO TAKAYASU;SONY CORPORATION |
发明人 |
TAKADA MASAYUKI;MUTO TAKAYASU |
分类号 |
G01S19/05;H04L9/32;G01S1/00;G01S5/00;G01S19/28;G01S19/48;H04L29/06;H04W12/00;H04W12/06 |
主分类号 |
G01S19/05 |
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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