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:
Mar. 13, 2012
Filed:
May. 06, 2008
Vir V. Phoha, Ruston, LA (US);
Shashi Phoha, State College, PA (US);
Asok Ray, State College, PA (US);
Shrijit Sudhakar Joshi, Ruston, LA (US);
Sampath Kumar Vuyyuru, Ruston, LA (US);
Vir V. Phoha, Ruston, LA (US);
Shashi Phoha, State College, PA (US);
Asok Ray, State College, PA (US);
Shrijit Sudhakar Joshi, Ruston, LA (US);
Sampath Kumar Vuyyuru, Ruston, LA (US);
The Penn State Foundation, University Park, PA (US);
Louisiana Tech Unversity Research Foundation, Ruston, LA (US);
Abstract
Hidden Markov Models ('HMMs') are used to analyze keystroke dynamics measurements collected as a user types a predetermined string on a keyboard. A user enrolls by typing the predetermined string several times; the enrollment samples are used to train a HMM to identify the user. A candidate who claims to be the user provides a typing sample, and the HMM produces a probability to estimate the likelihood that the candidate is the user he claims to be. A computationally-efficient method for preparing HMMs to analyze certain types of processes is also described.