Patent · US Expired

System for bidirectional data transmission between a beacon and a vehicle

US5537672A · kind A · utility

15Cited by

26References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Wilhelm Grabow · Nordstemmen, DE
Friedrich-Wilhelm Bode · Rodenberg, DE

Key dates

Filing date	Feb 1, 1995
Grant date	Jul 16, 1996
Priority date	—
Expiry date	Feb 1, 2015

Classification

Technology area (CPC H)Electricity
CPC primaryH04B7/0608
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A system, for bidirectional transmission of electromagnetic data signals between a stationary unit and a vehicle unit, in which at least two antennas can be used, is proposed. The antennas are aligned at a predetermined distance and at a predetermined height from one another, in such a way that reflection from the roadway and from vehicles is minimized. In the uplink mode, the antenna having the best reception properties is selected, so that reliable data transmission to the stationary unit takes place.

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