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:
Oct. 24, 2017
Filed:
Mar. 31, 2016
Parrot Drones, Paris, FR;
Pierre Eline, Arnouville les Gonesse, FR;
Francois Callou, Paris, FR;
PARROT DRONES, Paris, FR;
Abstract
A vertical-view camera () delivers an image signal (S) of the ground overflown by the drone. Gyrometric sensors () measure the Euler angles (φ, θ, Ψ) characterizing the attitude of the drone and delivering a gyrometric signal (S) representative of the instantaneous rotations. Rotation compensation means () receive the image signal and the gyrometric signal and deliver retimed image data, compensated for the rotations, then used to estimate the horizontal speeds of the drone. The camera and the inertial unit are piloted by a common clock (), and it is provided a circuit () for determining the value of the phase-shift between the gyrometric signal and the image signal, and to apply this phase-shift value at the input of the rotation compensation means () to resynchronize the image signal onto the gyrometric signal before computation of the retimed image data.