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:
Apr. 21, 1992
Filed:
Jun. 27, 1990
Christoph Gesper, Walzbachtal, DE;
Siegfried Heyden, Pforzheim, DE;
Becker Autoradiowerk GmbH, Karlsbad, DE;
Abstract
The function of a control arrangement for an occupant restraint system in an automobile is continuously monitored by monitoring circuit. The monitoring circuit checks the frequency of a check signal derived from the microcomputer clock signal using a counting device which is controlled by its own stable oscillator. The monitoring circuit supplies an enable signal to the microcomputer, when such frequency is correct. If the frequency of the check signal is not found to be correct the monitoring circuit supplies a drive signal for the operation of an indicating lamp. At the same time the supply of the trip signal to the trip device is prevented. An error message is produced and the trip signal is suppressed also if the monitoring circuit itself fails.