Abstract: A method and apparatus for determining if an optical disk originated from a valid source, the method and apparatus scanning one major surface of the optical disk for imperfections, storing the locations of the imperfections relative to a datum, comparing a parameter of each of the locations of the imperfections with corresponding parameters of a master disk of known source for determining if the disk originated from the source from which the master disk originated.
Type:
Grant
Filed:
April 23, 2008
Date of Patent:
January 17, 2012
Assignee:
Fraudhalt Limited
Inventors:
Patrick Smith, Phelim O'Doherty, Sean McCarthy
Abstract: A method and apparatus for determining if an optical disk originated from a valid source, the method and apparatus scanning one major surface of the optical disk for mechanical surface imperfections, storing the locations of the surface imperfections relative to a datum, comparing a parameter of each of the locations of the surface imperfections with corresponding parameters of a master disk of known source for determining if the disk originated from the source from which the master disk originated.
Type:
Grant
Filed:
February 13, 2006
Date of Patent:
April 6, 2010
Assignee:
Fraudhalt Limited
Inventors:
Phelim A. O'Doherty, Patrick J. Smith, Carlos Luna, Sean D. McCarthy
Abstract: A method for verifying a hologram, comprising the steps of reading at least two images of the hologram, the images being representative of images derived at respective different viewing angles, comparing a characteristic derived from the respective images with a reference characteristic to establish if the hologram is authentic, and outputting a signal indicative of the authenticity or otherwise of the hologram.
Type:
Grant
Filed:
October 19, 2004
Date of Patent:
March 2, 2010
Assignee:
Fraudhalt Limited
Inventors:
Phelim A. O'Doherty, Patrick J. Smith, Carlos Luna, Sean D. McCarthy
Abstract: A method and apparatus for determining if an optical disk originated from a valid source, the method and apparatus scanning one major surface of the optical disk for imperfections, storing the locations of the imperfections relative to a datum, comparing a parameter of each of the locations of the imperfections with corresponding parameters of a master disk of known source for determining if the disk originated from the source from which the master disk originated.
Type:
Application
Filed:
April 23, 2008
Publication date:
September 18, 2008
Applicant:
Fraudhalt Limited
Inventors:
Patrick Smith, Phelim O'Doherty, Sean McCarthy
Abstract: A method and apparatus for determining if an optical disk originated from a valid source, the method and apparatus scanning one major surface of the optical disk for mechanical surface imperfections, storing the locations of the surface imperfections relative to a datum, comparing a parameter of each of the locations of the surface imperfections with corresponding parameters of a master disk of known source for determining if the disk originated from the source from which the master disk originated.
Type:
Grant
Filed:
June 15, 2004
Date of Patent:
May 13, 2008
Assignee:
Fraudhalt Limited
Inventors:
Patrick Smith, Phelim O'Doherty, Sean McCarthy