| PARROT Patent applications |
| Patent application number | Title | Published |
|---|
| 20120091260 | METHOD OF PILOTING A ROTARY WING DRONE HAVING MULTIPLE ROTORS - This method implements a transition from i) moving state in which the drone is flying at speed and tilt angle that are not zero to ii) hovering state in which the drone has speed and tilt angle that are both zero. The method comprises: a) measuring horizontal linear speed, tilt angles, and angular speeds at the initial instant; b) setting stopping time value; c) on the basis of initial measurements and set stopping time, parameterizing a predetermined predictive function that models optimum continuous decreasing variation of horizontal linear speed as a function of time; d) applying setpoint values to a loop for controlling motors of the drone, which values correspond to target horizontal linear speed precalculated from said parameterized predictive function; and e) once hovering state has been reached, activating a hovering flight control loop for maintaining drone at speed and tilt angle that are zero relative to the ground. | 04-19-2012 |
| 20110311099 | METHOD OF EVALUATING THE HORIZONTAL SPEED OF A DRONE, IN PARTICULAR A DRONE CAPABLE OF PERFORMING HOVERING FLIGHT UNDER AUTOPILOT - The method operates by estimating the differential movement of the scene picked up by a vertically-oriented camera. Estimation includes periodically and continuously updating a multiresolution representation of the pyramid of images type modeling a given picked-up image of the scene at different, successively-decreasing resolutions. For each new picked-up image, an iterative algorithm of the optical flow type is applied to said representation. The method also provides responding to the data produced by the optical-flow algorithm to obtain at least one texturing parameter representative of the level of microcontrasts in the picked-up scene and obtaining an approximation of the speed, to which parameters a battery of predetermined criteria are subsequently applied. If the battery of criteria is satisfied, then the system switches from the optical-flow algorithm to an algorithm of the corner detector type. | 12-22-2011 |
| 20110301787 | METHOD OF SYNCHRONIZED CONTROL OF ELECTRIC MOTORS OF A REMOTE- CONTROLLED ROTARY WING DRONE SUCH AS A QUADRICOPTER - Each motor is controlled by a microcontroller and the set of microcontrollers is driven by a central controller. According to the invention, said method comprises: a preliminary step consisting at least in establishing an asynchronous serial communications link over a line between the central controller and each of the microcontrollers, and in allocating an address parameter to each microcontroller; and in operation, at least a control step proper consisting: i) for the central controller, in sending simultaneously on each link line a message containing at least one instruction specified by the address parameter of a destination microcontroller that is to execute said instruction; and ii) for each destination microcontroller, in extracting the instruction addressed thereto from said message, and executing it. | 12-08-2011 |
| 20110299732 | SYSTEM OF DRONES PROVIDED WITH RECOGNITION BEACONS - The present invention relates to a system ( | 12-08-2011 |
| 20110288696 | DEVICE FOR PILOTING A DRONE - The device ( | 11-24-2011 |
| 20110221692 | METHOD AND AN APPLIANCE FOR REMOTELY CONTROLLING A DRONE, IN PARTICULAR A ROTARY WING DRONE - The appliance comprises a touch screen and wireless data transmission means for communicating with the drone. Drone piloting commands are activated by one or two fingers making contact with and/or moving over the locations of corresponding piloting symbols displayed on the screen. The method proceeds by: a) detecting finger contact at an arbitrary contact point in at least one predefined zone of the screen on which piloting symbols are not already displayed; b) displaying a piloting icon on the screen at said contact point, the piloting icon comprising a movable icon displayed at a position that tracks any movement of the finger contact point over the screen from an initial position to an offset position; c) detecting the movement of the movable icon; d) on detecting said movement, analyzing the direction and/or the amplitude of the movement relative to the initial position; and e) activating a piloting command as a function of the result of said analysis. | 09-15-2011 |
| 20110129100 | AUDIO/VIDEO APPLIANCE OF IMPROVED ERGONOMICS AND EXTRACTABILITY FOR INCORPORATING IN A MOTOR VEHICLE, IN PARTICULAR A CAR RADIO - The assembly comprises: a car radio with a housing and a removable half front plate; a mounting sheath; means for securing the housing in the sheath; and means for unlocking the housing, said means comprising a tool suitable for being inserted in at least two orifices formed in the front face of the housing. These two orifices are formed in a central zone of the housing that is hidden by the front plate when it is mounted on the housing, and that is visible when the front plate is separated from the housing. The assembly has essentially no peripheral cover fitted thereto. The U-shaped tool makes it easy to extract the car radio using one hand in a single movement. | 06-02-2011 |
| 20110129048 | SYNCHRONIZED SYSTEM FOR DISTRIBUTING AND PROCESSING SIGNALS, IN PARTICULAR AUDIO SIGNALS IN A WIRELESS LOUDSPEAKER NETWORK - The system comprises a master device ( | 06-02-2011 |
| 20110070926 | OPTIMIZED METHOD OF FILTERING NON-STEADY NOISE PICKED UP BY A MULTI-MICROPHONE AUDIO DEVICE, IN PARTICULAR A "HANDS-FREE" TELEPHONE DEVICE FOR A MOTOR VEHICLE - In the frequency domain, the method comprises the following steps:
| 03-24-2011 |
| 20110054891 | METHOD OF FILTERING NON-STEADY LATERAL NOISE FOR A MULTI-MICROPHONE AUDIO DEVICE, IN PARTICULAR A "HANDS-FREE" TELEPHONE DEVICE FOR A MOTOR VEHICLE - The method comprises the following steps in the frequency domain:
| 03-03-2011 |
| 20110049290 | METHOD OF PILOTING A ROTARY-WING DRONE WITH AUTOMATIC STABILIZATION OF HOVERING FLIGHT - This method, applicable in particular to radio-controlled toys comprises the operations consisting in: fitting the drone with a telemeter and a video camera; acquiring the altitude of the drone relative to the ground by means of a telemeter; acquiring the horizontal speed of the drone; and automatically stabilizing the drone in hovering by: servo-controlling the vertical thrust force of the drone so as to stabilize the altitude acquired by the telemeter; and servo-controlling the horizontal thrust force of the drone so as to obtain zero horizontal speed. The video camera is a front-sight camera pointing towards the front of the drone; and the horizontal speed of the drone is acquired from a plurality of video images captured by said front-sight camera. | 03-03-2011 |
| 20100325323 | AUTOMATIC SOURCE CONCENTRATOR FOR A MULTIMEDIA SYSTEM - The concentrator couples a plurality of digital and analog sources to an audio/video reader system suitable for reading one of the sources. Each available source is associated with a source identifier and an activated or deactivated state flag, as a result of the user taking action on a source. A register ( | 12-23-2010 |
| 20100178966 | A METHOD OF RECOGNIZING OBJECTS IN A SHOOTER GAME FOR REMOTE-CONTROLLED TOYS - The invention relates to a method of recognizing objects for a video shooter game, the system comprising a first remote-controlled vehicle ( | 07-15-2010 |
| 20100171430 | AUTOMATICALLY CONTROLLED LIGHTING DEVICE, AND AN INSTALLATION INCLUDING A PLURALITY OF SUCH DEVICES - The lighting device ( | 07-08-2010 |
| 20100166199 | ACOUSTIC ECHO REDUCTION CIRCUIT FOR A "HANDS-FREE" DEVICE USABLE WITH A CELL PHONE - The device comprises: a circuit for picking up acoustic signals with the microphone ( | 07-01-2010 |
| 20100109493 | AUDIO/VIDEO ELECTRONIC APPLIANCE, IN PARTICULAR A CAR RADIO, HAVING A REMOVABLE FRONT PLATE - The appliance comprises a casing, a removable front plate, an electrical connector, and mechanical means for assembling the front plate on the casing and for fastening it thereto. The mechanical means comprise, at a first end, means that form a separable hinge comprising at least one pair of respective magnetic elements such as permanent magnets disposed in the region of the connector and facing one another on the casing and the front plate, and the opposite end, means for locking the front plate to the casing. Mechanical coupling of the front plate on the casing at the location of the separable magnetic hinge results solely from the mutual attraction of the facing magnetic elements. | 05-06-2010 |
| 20100062817 | METHOD OF DEFINING A COMMON FRAME OF REFERENCE FOR A VIDEO GAME SYSTEM - The invention relates to a method of defining a common frame of reference for a video game system. The system comprises at least two remotely-controlled vehicles ( | 03-11-2010 |
| 20100060808 | DIGITAL IMAGE DISPLAY DEVICE - The display device ( | 03-11-2010 |
| 20100029345 | ACOUSTIC ECHO REDUCTION CIRCUIT FOR A "HANDS-FREE" DEVICE USABLE WITH A CELL PHONE - The device comprises: a circuit for picking up acoustic signals with the microphone ( | 02-04-2010 |
| 20100009735 | METHOD OF DISPLAY ADJUSTMENT FOR A VIDEO GAME SYSTEM - The invention relates to a method of display adjustment ( | 01-14-2010 |
| 20090323983 | Method and a system for reconstituting low frequencies in audio signal - The method comprises the steps of: filtering the audio signal by means of a lowpass filter ( | 12-31-2009 |
| 20090310796 | METHOD OF REDUCING RESIDUAL ACOUSTIC ECHO AFTER ECHO SUPPRESSION IN A "HANDS-FREE" DEVICE - The method comprises, in the time domain, echo cancellation processing ( | 12-17-2009 |
| 20090304191 | AUTOMATIC GAIN CONTROL SYSTEM APPLIED TO AN AUDIO SIGNAL AS A FUNCTION OF AMBIENT NOISE - An automatic gain control system applied to a audio signal as a function of the ambient noise, the system comprising: an ambient noise estimator module suitable for establishing a current noise value estimated at least from a signal provided by a microphone; and an automatic gain control module suitable for applying to the audio signal gain of a value that is determined as a function of the current noise value received from the ambient noise estimator module. According to the invention, the ambient noise estimator module comprises an MCRA estimator suitable for establishing the current noise value from a signal provided by the microphone picking up the real noise, the echo of the music, and where appropriate speech. The system also includes a module for estimating the power of the audio signal and suitable for providing the automatic gain control module with a current power value for the audio signal. | 12-10-2009 |
| 20090284553 | METHOD OF DEFINING A GAME ZONE FOR A VIDEO GAME SYSTEM - The invention relates to a method of defining a game zone for a video game system. The system comprises a remotely-controlled vehicle ( | 11-19-2009 |
