Location confirmation system and information transmitting method for use in the system
US6957144B2 · kind B2 · utility
0Cited by
4References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 9, 2003 |
| Grant date | Oct 18, 2005 |
| Priority date | — |
| Expiry date | Sep 9, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/127
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a location confirmation system, one navigation terminal connects a line to an information center to transmit timing information, and the information center identifies other navigation terminals for exchanging information indicating current locations to transmit the timing information to them. Thereafter, other navigation terminals having received the timing information and one navigation terminal transmit and receive the information indicating each current location at almost equal timing in accordance with the timing information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.