Map information providing method and system and terminal device used therein
US6330453A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1999 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Feb 4, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/0969
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A base station transmits map information in which a predetermined area is divided in rectangular areas and represented on several steps of scales by using a broadcast channel. The user of a terminal device enters scale and area of map information currently required. The terminal device stores only the map information of the area and scale that the user requires among a plurality of pieces of map information transmitted on the broadcast channel in an internal map storage portion. Thus a map information providing method and a terminal device used in the method are provided, wherein the terminal device can select required information from among the map information transmitted from the base station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.