Edward Doran Richter

US Patent:

7478751, Jan 20, 2009

Filed:

Dec 17, 2004

Appl. No.:

11/014930

Inventors:

Emmanuel C. Limtao - Bellflower CA, US
Edward J. Richter - Richmond Heights MO, US
Stephen R. Wood - San Pedro CA, US

Assignee:

Magtek, Inc. - Carson CA
Washington Univ. - St. Louis MO

International Classification:

G06K 7/08

US Classification:

235449, 235435

Abstract:

A system for verifying the authenticity of data contained in a magnetic medium using the remanent noise characteristics of the magnetic medium. In one embodiment, the invention includes a sensing unit configured to generate a signal indicative of the magnetic field of the magnetic medium, an analog-to-digital converter (ADC) in communication with the sensing unit and configured to digitize the analog signal, a filter in communication with the ADC configured to enhance the component of the signal associated with the remanent noise characteristic, a data extraction unit, in communication with the ADC and the filter configured to measure at least bit duration and peak location and an authentication extraction unit, in communication with the filter and the data extraction unit configured to extract a set of scaled samples from the output of the filter representative of the remanent noise characteristic.

US Patent:

8447991, May 21, 2013

Filed:

Nov 6, 2007

Appl. No.:

11/935980

Inventors:

Annmarie D. Hart - Carson CA, US
Lawrence R. Meyers - Rancho Palos Verdes CA, US
Carlos Hernandez - Carson CA, US
Edward J. Richter - Richmond Heights MO, US
Ronald S. Indeck - St. Louis MO, US

Assignee:

Magtek, Inc. - Carson CA
Washington Univ. - St. Louis MO

International Classification:

G06F 21/00

US Classification:

713185, 726 35

Abstract:

A card authentication system. In one embodiment, the invention relates to a method for authenticating a data card having an intrinsic magnetic characteristic and recorded data on the data card, the method including reading information from the data card, the data card information including the intrinsic magnetic characteristic and the recorded data on the data card, encrypting the data card information, sending the encrypted data card information, receiving the encrypted data card information, decrypting a portion of the encrypted data card information, the portion including the intrinsic magnetic characteristic, generating a score indicative of a degree of correlation between the intrinsic magnetic characteristic of the data card information and a stored value, and determining an authenticity of the data card based at least in part on the score.