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. 29, 2013
Filed:
Mar. 24, 2009
Jan Braasch, Altenmarkt, DE;
Wolfgang Holzapfel, Obing, DE;
Ulrich Benner, Trostberg, DE;
Gabriele Ehgartner, Kienberg, DE;
Robert Bernhard, Garching, DE;
Elmar Mayer, Nuβdorf, DE;
Martin Seichter, Wonneberg, DE;
Jan Braasch, Altenmarkt, DE;
Wolfgang Holzapfel, Obing, DE;
Ulrich Benner, Trostberg, DE;
Gabriele Ehgartner, Kienberg, DE;
Robert Bernhard, Garching, DE;
Elmar Mayer, Nuβdorf, DE;
Martin Seichter, Wonneberg, DE;
Dr. Johannes Heidenhain GmbH, Traunreut, DE;
Abstract
A position measuring device including a code having a sequence of code elements of equal width B that is disposed in a measurement direction and includes a first property and a second property. The sequence of codes elements includes a first set of code elements having the first property and a second set of code elements having the second property, wherein the first and second sets of code elements are each being disposed aperiodically. The position measuring device further including a scanning unit having a plurality of detectors for scanning the code and obtaining scanning signals, wherein a code word defining an absolute position is defined from the scanning signals. The position measuring device including an arrangement for forming an incremental signal from the scanning signals, wherein the arrangement includes a converter device and a collection device arranged downstream of the converter device and wherein the collection device forms respective intermittently periodic partial signals from the scanning signals derived from scanning positions in a spacing matrix.