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:
Jan. 27, 2009
Filed:
Jan. 18, 2008
Joong K. Lee, Chatham, CA;
Ryan W. Elliott, Chatham, CA;
Joong K. Lee, Chatham, CA;
Ryan W. Elliott, Chatham, CA;
KSR Technologies Co., Ridgetown, CA;
Abstract
An apparatus providing a signal related to a position of a coupler element comprises an exciter coil and a receiver coil, the apparatus being operable to provide a signal correlated with the position of the coupler element using a receiver signal generated when the exciter coil is energized due to an inductive coupling between the receiver coil and the exciter coil. In some examples, the receiver coil has first and second sections generating a first section signal and a second section signal respectively, and an electronic circuit is operable to generate a position-independent signal using the first section signal and the second signal. This position-independent signal may then be subtracted from a baseline voltage to provide an improved reference signal for ratiometric position sensing.