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. 16, 2019
Filed:
Aug. 02, 2017
Dr. Johannes Heidenhain Gmbh, Traunreut, DE;
Elmar Mayer, Nußdorf, DE;
Andre Wiegand, Traunstein, DE;
DR. JOHANNES HEIDENHAIN GMBH, Traunreut, DE;
Abstract
A position measuring device includes: a first graduation carrier having a measuring graduation; a scanning unit, which is arranged so as to allow movement in a measuring direction relative to the measuring graduation in order to generate position-dependent scanning signals by scanning the measuring graduation; a signal processing unit for processing the scanning signals into positional signals; and a signal interface via which the positional signals are able to be output to subsequent electronics. At least one correction unit is provided in the signal processing unit by which at least one signal error of at least one scanning signal is able to be corrected. A monitoring unit is arranged to detect the reaching of a limit value of the signal error, and a correction unit triggering the event is able to be deactivated subsequently.