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:
Jul. 24, 2001
Filed:
Sep. 23, 1998
William P. Lord, Fishkill, NY (US);
Mohamed Abdel-Mottaleb, Ossining, NY (US);
Michael Epstein, Spring Valley, NY (US);
Philips Electronics North America Corporation, New York, NY (US);
Abstract
A digital image is divided into a plurality of cells having a first sequence. A random seed is generated and used to produce two sets of pseudo-random numbers. The first set of pseudo-random numbers are used to alter the location and shape of the cells thereby creating a new set of cells that the image is divided into. A measurement is taken for each of these new cells. The second set of pseudo-random numbers creates a second sequence. Each of the new cells corresponding to the first sequence is compared to another new cell corresponding to the second sequence. This comparison is related to a threshold and yields a fingerprint. The resultant fingerprint is transmitted along with the image and the random seed. A receiver performs the same algorithm on its received image. If it produces the same fingerprint as the one it receives, it is assumed that the image has not been altered.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile