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:
Jan. 06, 2004
Filed:
Dec. 17, 2001
Applicant:
Inventors:
Assignee:
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B 1/3196 ;
U.S. Cl.
CPC ...
G08B 1/3196 ;
Abstract
A method and apparatus for monitoring the interior space of a motor vehicle by means of IR radiation include at least one stationary IR transmitter and at least one stationary IR receiver arranged in a central position in the vehicle interior space. The interior space is at least temporarily irradiated. The reflected IR radiation is received by an IR camera as IR receiver. For suppression of interfering effects two images of the same object are recorded at different illumination levels. The two images are subtracted from one another with respect to their gray scale values.