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:
Jun. 29, 1993
Filed:
Apr. 08, 1991
Applicant:
Inventor:
Roman Romes, Friolzheim, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08C / ;
U.S. Cl.
CPC ...
34087035 ; 34087036 ; 32420718 ; 32420719 ;
Abstract
A sensor circuit has a measuring circuit in which measuring signals occur at two different circuit points and signals at one point change oppositely to signals at the other point during changing of measuring values, and an evaluating circuit for evaluating measuring signals and outputting a sensor signal. The measuring circuit delivers the signals from the both points separately to the evaluating circuit. The evaluating circuit is formed so that it forms a difference of the both measuring signals and, for operational control of the sensor circuit, checks whether the measuring signals actually change oppositely to one another always within predetermined error limits.