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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.:

US 9912201 B1

PDFFull Text
Date of Patent:
Mar. 06, 2018

Filed:

Apr. 11, 2011

Systems and methods of detecting a change in object presence in a magnetic field

Applicant:

Eric Gregory Oettinger, Rochester, MN (US);

Inventor:

Eric Gregory Oettinger, Rochester, MN (US);

Assignee:

Texas Instruments Incorporated, Dallas, TX (US);

Attorneys:

William B. Kempler

Charles A. Brill

Frank D. Cimino

Primary Examiner:

David V Henze-Gongola

Int. Cl.
CPC ...
H02J 7/00 (2006.01); H01F 27/42 (2006.01); H01F 37/00 (2006.01); H01F 38/00 (2006.01); H02J 50/90 (2016.01); G01R 33/00 (2006.01); G01R 33/028 (2006.01); H02J 5/00 (2016.01); H02J 7/02 (2016.01); H04B 5/00 (2006.01); H02J 50/12 (2016.01); H01F 38/14 (2006.01);
U.S. Cl.
CPC ...
H02J 50/90 (2016.02); G01R 33/0041 (2013.01); G01R 33/028 (2013.01); H02J 5/005 (2013.01); H02J 7/025 (2013.01); H02J 50/12 (2016.02); H04B 5/0037 (2013.01); H04B 5/0081 (2013.01); H01F 38/14 (2013.01);
Abstract

The systems and methods of detecting a change in object presence in a magnetic field disclosed herein inject a low amplitude signal near the resonant frequency into the coil until the system comes to equilibrium. At this point the feedback is measured. The feedback signal can be measured as at least one of several signals, for example, but not limited to the voltage on the resonant capacitor, the current in the coil, and the voltage between the resonant capacitor and the coil. A change in the steady state response indicates a change in device presence.

Find Patent Forward Citations

Oettinger, Eric. (2018). Systems and methods of detecting a change in object presence in a magnetic field (U.S. Patent No. 9912201). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9912201

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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