Patent · US Expired

Database system for navigation device

US7181344B2 · kind B2 · utility

10Cited by

4References

20Claims

0Family size

Assignee

HARMAN BECKER AUTOMOTIVE SYSTEMS GMBH · DE

Inventors

Andreas Lehmann · Schlieren, CH
Joachim Wietzke · Hildesheim, DE
Ingo Nagel · Seevetal, DE
Jürgen Hellmich · Hamburg, DE

Key dates

Filing date	Apr 15, 2004
Grant date	Feb 20, 2007
Priority date	—
Expiry date	Oct 2, 2024

Classification

Technology area (CPC G)Physics
CPC primaryG08G1/0969
WIPO fieldControl
WIPO sectorInstruments

Abstract

A database system for a global positioning (GPS) vehicular navigation device having a first database including street information data and a second database, including location information data that is independent of the first data. The database system includes a working memory unit including a first memory area and a second memory area separate from the first memory area. The first data includes street information stored in the first memory area and the second data includes location information stored in the second memory area.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.