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. 24, 2017
Filed:
Mar. 01, 2010
Gregor Dolsak, Velike Lasce, SI;
Aljaz Ogrin, Ljubljana, SI;
Matjaz Janezic, Smartno pri Litiji, SI;
Gregor Dolsak, Velike Lasce, SI;
Aljaz Ogrin, Ljubljana, SI;
Matjaz Janezic, Smartno pri Litiji, SI;
RLS MERILNA TEHNIKA D.O.O., Dobrunje, SI;
RENISHAW PLC, Wotton-under-Edge, GB;
Abstract
A readhead is provided for reading an absolute scale, optionally a passive magnetic scale, that encodes a series of data bits. The readhead includes a plurality of sensors, such as an array of Hall sensors, for producing a plurality of sensor signals. A plurality of signal combiners are also provided to receive at least two of the sensor signals and produce therefrom a combined sensor signal. A plurality of data bit extractors are arranged to receive at least two combined sensor signals and to determine the value of a data bit encoded in an associated absolute scale. The readhead also comprises an incremental signal generator for generating at least one incremental signal from the combined sensor signals produced by a plurality of the signal combiners. In this manner, both absolute and incremental position is measured.