| 发明名称 |
HISTORY MANAGEMENT DEVICE AND HISTORY MANAGEMENT SYSTEM |
| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To infer a location of an article without using position information of the article. <P>SOLUTION: A personal digital assistant 12d monitors personal digital assistants 2a-2c for which communication with the personal digital assistant 12d is established within a communication range R2, and records connecting states of the personal digital assistant 12d with the personal digital assistants 12a-12c with the time. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
| 申请公布号 |
JP2008186050(A) |
申请公布日期 |
2008.08.14 |
| 申请号 |
JP20070016377 |
申请日期 |
2007.01.26 |
| 申请人 |
NTT DOCOMO INC |
发明人 |
TANAKA KIYOKO;AKAO KATSUMI;KANEHIRA MAYUMI;TATE KAZUYUKI |
| 分类号 |
G06Q10/00;G06Q50/00;G06Q50/10;H04M11/00 |
主分类号 |
G06Q10/00 |
| 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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