Data communication system and method, and mobile body apparatus
US6615134B2 · kind B2 · utility
52Cited by
2References
59Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 3, 2002 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Jun 3, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/202
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The present invention relates to a data communication system in which a first request signal containing position information is transmitted from a first mobile unit (6) to a base station (2), and in which the base station (2) searches for a second mobile unit (5) in accordance with the position information contained in the first request signal, then transmits a second request signal to the second mobile unit (5), and returns data returned from the second mobile unit (5) to the first mobile unit (6).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.