Title:
位置情報システム
Document Type and Number:
Japanese Patent JP5960035
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a technique that allows a transmitter to transmit correct position information.SOLUTION: The position information system includes an authentication device that authenticates whether or not to validate a transmitter. When position information of the transmitter held by the authentication device in advance coincides with position information held by the transmitter, the transmitter is validated and the position information is transmitted.
Inventors:
Makoto Tanigawara
Takamasa Kawaguchi
Tomohisa Kohiyama
Takamasa Kawaguchi
Tomohisa Kohiyama
Application Number:
JP2012260031A
Publication Date:
August 02, 2016
Filing Date:
November 28, 2012
Export Citation:
Assignee:
Hitachi Industrial Equipment Systems Co., Ltd.
International Classes:
H04W12/12; H04W64/00
Domestic Patent References:
| JP2012018105A | ||||
| JP2010081354A |
Foreign References:
| WO2008059882A1 | ||||
| WO2011021431A1 | ||||
| WO2009110471A1 |
Attorney, Agent or Firm:
Yusuke Hiraki
Sekiya Mitsuo
Toshiaki Watanabe
Sekiya Mitsuo
Toshiaki Watanabe
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