Communications navigation system, and navigation base apparatus and navigation apparatus both used in the navigation system
US6314369A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1999 |
| Grant date | Nov 6, 2001 |
| Priority date | — |
| Expiry date | Jul 1, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/096872
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a communications navigation system, data is transmitted and received between a navigation base apparatus provided at a navigation base and each of a plurality of navigation apparatuses provided in moving bodies such as vehicles using communication. A determining section of the navigation base apparatus determines untraveled route portion by comparing user's information stored in a user information storage with information of a recommended route provided by a route search section. The navigation base apparatus extracts necessary route/guidance information for untraveled route portion determined by the determining section from route/guidance data stored in a database, and then transmits the extracted route/guidance data to the navigation apparatus identified by the identification information. The route/guidance information may be transmitted to the navigation apparatus in the form of segmented data. In this way, it becomes possible for the navigation apparatus to extract only the route/guidance information needed by the user from the route/guidance data stored in the database.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.