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SPACE PATENTS BY
Aerospace Assignees
Aerospace Inventors
Time Lines

Method and device for measuring the angular velocity of a luminance transition zone and steering aid system for fixation and tracking a target comprising at least one such luminance transition zone

Invented by: Lubin Kerhuel
La Celle Saint Cloud, FR

Stephane Viollet
Marseilles, FR

Franck Ruffier
Marseilles, FR Applicant: Name City State Country Type Kerhuel

Originally Assigned to: Universite d'Aix-Marseille
Marseilles, FR Centre National de la Recherche Scientifique
[Now assigned to . . .]

Issued:2015-01-20
Filed:2010-12-09
Application No:13516717
Examined by:Ratcliffe; Luke

The present invention relates to a method for measuring a time delay between two output signals measured by two adjacent optical sensors, the time delay resulting from a movement of an object moving in a given direction. The method comprises the steps: carrying out a spatial filtering of the signals Ph.sub.1 and Ph.sub.2 delivered by a first and a second optical sensor; calculating a first order derivative and carrying out a temporal low-pass filtering of the signals; calculating the second order derivative of the signals; measuring the delay between the signals; and is characterized in that the step of measuring the delay is a feedback loop based on an estimated delay between the temporally filtered signals. Device and set of devices for measuring the angular velocity of a luminance transition zone and steering aid system for fixation and tracking a target comprising at least one such luminance transition zone.

[pdf] U.S. Pat. No. 8,938,324

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This information is part of a study by Oasis Global, Inc. of all space inventions filed at the United States Patent and Trademark Office, and is provided for informational purposes only. It is not an endorsement of any particular assignee, inventor or invention. Although Peter A. Koziol represents inventors and assignees of space inventions he does not represent all of the inventors and assignees listed. The prosecuting attorney agent or firm for each patent is identified by the United States Patent and Trademark Office in the patent specfication, which can be viewed by clicking on the patent image or downloading the patent document. For more information regarding Mr. Koziol's background and experience, or to learn more about space inventions, please contact Mr. Koziol.

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