| 发明名称 |
System and method for inferring a set of characteristics of an environment with location-capable devices |
| 摘要 |
A set of characteristics of an environment is inferred by obtaining at least a first location estimate of a first device at a first time and a second location estimate of the first device at a second time. A first path traveled (240) by the first device is established based on at least the first location estimate of the first device at the first time and the second location estimate of the first device at the second time. At least one characteristic of the environment is inferred based on the first path traveled by the first device.
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| 申请公布号 |
US2003214410(A1) |
申请公布日期 |
2003.11.20 |
| 申请号 |
US20020145257 |
申请日期 |
2002.05.14 |
| 申请人 |
JOHNSON MARK J.;PERKINS MATTHEW R.;O'DEA ROBERT J.;BANCROFT TIMOTHY J.;KRIZIK MARK A.;PATWARI NEAL K. |
发明人 |
JOHNSON MARK J.;PERKINS MATTHEW R.;O'DEA ROBERT J.;BANCROFT TIMOTHY J.;KRIZIK MARK A.;PATWARI NEAL K. |
| 分类号 |
G07C1/20;G07C9/00;G08B21/02;(IPC1-7):G08B23/00 |
主分类号 |
G07C1/20 |
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