Communications navigation system, and navigation base apparatus and vehicle navigation apparatus both used in the navigation system
US6249740A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1999 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Jan 21, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/096872
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A commucations navigation system in which data is transmitted and received between a navigation base apparatus provided at a navigation base and a vehicle navigation apparatus provided in a vehicle using communication. The vehicle navigation apparatus is adapted to transmit at least data concerning the current position of the vehicle and the destination thereof to the navigation base apparatus, and the navigation base apparatus stores navigation data in its data base and is adapted to determine a recommended route based on the transmitted data of the current position of the vehicle and the destination thereof and then extract data of the recommended route from the navigation data stored in the data base and transmit the extracted data to the navigation apparatus. The navigation base apparatus is adapted to be able to extract detailed navigation data only for a surrounding areas of a specified point on the recommended route from the navigation data stored in the data base and then transmit the detailed navigation data to the navigation apparatus. The specified point includes a departure point, a destination and a course-change point which are located on the recommended route. During…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.