Monitor system, terminal unit, monitor system control method, terminal unit control method, terminal unit control program, computer-readable recording medium having the terminal unit control program, administrative apparatus, administrative apparatus control method
US7343166B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2005 |
| Grant date | Mar 11, 2008 |
| Priority date | — |
| Expiry date | Aug 17, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/207
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A terminal unit is attached to a monitoring object. The terminal unit locates its position via a position-related signal from a satellite positioning system. The terminal unit acquires first-located position information first, and then second-located position information upon a lapse of a predetermined positioning interval after the first-located position information is acquired. When the first-located position is within a permissible moving zone and the second-located position is outside the permissible moving zone, the terminal unit acquires third-located position information before the predetermine positioning interval lapses. If the third-located position is still outside the permissible moving zone, then the terminal unit sends a reporting signal to a monitor apparatus. The monitor system reduces occurrences of inaccurate reporting signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.