Map data access method for navigation and navigation system
US6233520A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 12, 1999 |
| Grant date | May 15, 2001 |
| Priority date | — |
| Expiry date | Feb 12, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99931
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
There is provided a map data access method and device capable of reading out from a recording medium the map data requested by a navigation system and providing them to the system whether C language, etc. or JAVA (trademark), etc. is employed to constitute a processing program on the navigation system side. In the recording medium, the map data and a reading method of the data are recorded in pairs in a map data section and a method section, respectively. When a navigation function section requests the map data, a data access section reads out desired data in a method (program) read out from the method section according to a requested application programming interface (API). The data read out are supplied as a byte array object to the navigation function section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.