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:
Oct. 22, 2002
Filed:
Nov. 12, 1999
Bernhard Kreppold, Munich, DE;
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Abstract
A method, a selector switch and selector device, is provided for secure position detection of a selector switch, which can be operated in at least two positions, particularly in a vehicle. In the method, a code word composed of a data part and a test part is assigned to each selector switch position. The code word is generated in each selector switch position by a number of switches corresponding to the number of bits of the code word. The data part already indicates an unambiguous selector switch position. In each code word, the test part is determined corresponding to a defined imaging rule from the data part. The test part generated by the switches is compared with the test part formed on the basis of the imaging rule from the data part, and, from a comparison of the two test parts, a conclusion is drawn with respect to a correct or erroneous position detection of the selector switch.