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:
Sep. 20, 2011
Filed:
Jan. 19, 2009
Devon Fernandez, Londonderry, NH (US);
William P. Taylor, Amherst, NH (US);
Michael Morris, Deerfield, NH (US);
P. Karl Scheller, Bow, NH (US);
Eric Shoemaker, Pembroke, NH (US);
Devon Fernandez, Londonderry, NH (US);
William P. Taylor, Amherst, NH (US);
Michael Morris, Deerfield, NH (US);
P. Karl Scheller, Bow, NH (US);
Eric Shoemaker, Pembroke, NH (US);
Allegro Microsystems, Inc., Worcester, MA (US);
Abstract
A sensor responsive to movement of a detection target includes a magnetic field transducer operative to provide a magnetic field signal proportional to a magnetic field associated with the detection target, a peak detector for tracking positive and negative peaks of the magnetic field signal to generate a tracking signal, and a comparator having a first input responsive to the magnetic field signal, a second input responsive to an input signal related to the tracking signal, and an output at which is provided an output signal comprising first pulses having a first pulse width when the detection target moves in a first direction and second pulses having a second pulse width when the detection target moves in a second direction.