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:
Nov. 08, 2011
Filed:
Jun. 10, 2010
Rajesh Veera Venkata Lakshmi Langoju, Bangalore, IN;
Manoj Kumar Koyithitta Meethal, Bangalore, IN;
Debasish Mishra, Bangalore, IN;
Sekethraman Mahalingam, Bangalore, IN;
Rajesh Veera Venkata Lakshmi Langoju, Bangalore, IN;
Manoj Kumar Koyithitta Meethal, Bangalore, IN;
Debasish Mishra, Bangalore, IN;
Sekethraman Mahalingam, Bangalore, IN;
General Electric Company, Niskayuna, NY (US);
Abstract
A method of providing an image of an interior of a structure containing regions having different conductivities or admittivities. In one embodiment a series of electrical signal sets is applied to a series of electrodes, each signal set generating a rotating electric field. A measured set of electrical signals obtained from the electrodes are used to calculate a conductivity or admittivity distribution representative of the interior of the structure in a region about which the electrodes are positioned. The process of calculating the distribution includes defining a cost function, e.g., the energy function based on the distribution, and a forward model expressing the measured set of electrical signals as a function of the change in voltage values with respect to conductivity or admittivity and requiring that the partial derivative of the difference between the energy function and a function based on the forward model equal zero.