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. 09, 2020
Filed:
May. 01, 2018
Nxp B.v., Eindhoven, NL;
Robert Meyer, Hamburg, DE;
Michael Schoeneich, Hamburg, DE;
NXP B.V., Eindhoven, NL;
Abstract
A system includes a magnetic field sense element for detecting an external magnetic field and a magnetic field source proximate the magnetic field sense element for providing a reference magnetic field. The magnetic field sense element produces a composite signal having reference and measurement signal portions, the reference signal portion being indicative of the reference magnetic field and the measurement signal portion being indicative of the external magnetic field. A power supply provides a supply current through the magnetic field source for continuously generating the reference magnetic field while the system is in an operational mode. A processing circuit processes the composite signal to produce a measurement output signal indicative of the external magnetic field. A qualification circuit, coupled with the processing circuit at multiple test points, detects the reference signal portion at the multiple test points and determines operability of the system from the detected reference signal portion.