The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 30, 1999
Filed:
Mar. 07, 1996
Uwe Franke, Uhingen, DE;
Stefan Hahn, Denkendorf, DE;
Daimler Benz AG, , DE;
Abstract
Apparatus is provided for determining the distance of a vehicle from a roadway side marking. An arrangement of light sensitive sensor elements is fitted to the vehicle for optically scanning a portion of the roadway located in front of the vehicle. An evaluation unit, connected downstream of the sensor element arrangement, is also provided. Only one or a few sensor element lines are used as the sensor element arrangement. Each line scans a narrow strip of the roadway which runs in front of the vehicle, not parallel to the vehicle longitudinal axis, and extends laterally as far as the roadway side marking. The evaluation unit reads each sensor element line sequentially and processes the received signals to determine the lateral distance of the vehicle from the roadway marking. The relatively small quantity of data which accumulates permits the processing of the data digitally in real time by a conventional microprocessor. The apparatus is used as sleep warning system or lane guard for motor vehicles.