Patents Assigned to Giravions Dorand
  • Patent number: 4939587
    Abstract: In a method for reading a moving scene previously recorded in the form of successive images, the images are restituted by successive reading frames each corresponding to one image, the frames being intended to follow each other at a predetermined rate corresponding to a nominal speed of displacement of the moving scene. The method essentially consists:in defining an apparent speed at which the moving scene is required to travel,in automatically determining a function which expresses the ratio of the apparent speed V to the nominal speed Vnom by a number of recorded images to be skipped or to be repeated periodically at the time of reading,and in automatically initiating transfer from one image to another at each reading frame by a program which takes said function into account including a fractional portion of the number of images to be skipped or to be repeated at each reading frame.
    Type: Grant
    Filed: June 28, 1988
    Date of Patent: July 3, 1990
    Assignee: Giravions Dorand
    Inventor: Christian Deslypper
  • Patent number: 4830487
    Abstract: In a method for locating an object such as a target for firing simulation in which the echo of a radiation beam emitted in the direction of the object and reflected back from the object is detected in the form of an electric signal, the signal is subjected to a correction treatment in order to compensate for variations in detection sensitivity as a function of the distance of the object. The signal treatment primarily consists in imposing on the signal a variable minimum threshold or a constant threshold with a variable preliminary gain. The variations take place in accordance with a predetermined correction law as a function of the time which elapses between emission of the radiation and detection of the echo.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: May 16, 1989
    Assignee: Giravions Dorand
    Inventors: Goujon Michel, Legay J. Francois
  • Patent number: 4750888
    Abstract: Training in the operation of moving vehicles is provided by an operating station comprising a steering wheel and a television monitor screen placed in front of the trainee driver. Theoretical steering control operations performed by a model driver on a previously recorded moving road landscape are used for producing the images of the road landscape as it moves in front of the trainee driver's control station. Steering errors made by the trainee driver are determined by comparison between the steering control operations performed by the trainee driver and the previously recorded model-driver steering control operations. Displacement of the images with respect to the television monitor screen is produced as a function of the trainee driver' s steering errors.
    Type: Grant
    Filed: December 11, 1984
    Date of Patent: June 14, 1988
    Assignee: Giravions Dorand
    Inventors: Jean-Claude Allard, Christian Deslypper, Christian Saunier
  • Patent number: 4743964
    Abstract: An animated scene viewed simultaneously at two different angles is recorded in the form of video signals on two videodisks which thus contain after recording a sequence of left-hand images and a sequence of right-hand images respectively. The images are restituted in synchronism by two readers, the signals of which are transmitted for visual display to two monitors associated with mirrors for reflecting the displayed images respectively to the left eye and to the right eye of a viewer.
    Type: Grant
    Filed: August 7, 1985
    Date of Patent: May 10, 1988
    Assignee: Giravions Dorand
    Inventors: Jean-Claude Allard, Christian Saunier
  • Patent number: 4680472
    Abstract: When using an electron capture detector for the molecular identification of electrophilic compounds, the sensitivity of the detector is made reproducible by controlling the voltage or frequency of the pulses applied to it to maintain a reference current whose set value is produced automatically by the device after determination of the characteristics of the state of the detector, namely a so-called saturation current CM and a so-called spontaneous current CS, according to a law of proportionality between these two currents.In addition, knowledge of these state characteristics gives information on the physical and physicochemical anomalies of the analysis device having an effect on the sensitivity of the detector, and consequently enables them to be remedied.
    Type: Grant
    Filed: January 14, 1986
    Date of Patent: July 14, 1987
    Assignee: Giravions Dorand
    Inventor: Claude Mendes
  • Patent number: 4657511
    Abstract: A training device for indoor weapon-firing comprises a projector for displaying a sequence of moving images in visible light viewed by at least one firer and comprising a landscape with at least one target to be hit. Provision is made for at least one weapon equipped with a trigger mechanism and for an electronic computer assembly which has the function of controlling the emission of the infrared-radiation beam by means of the trigger mechanism. Another function of the electronic assembly is to stop the motion of projected images under the control of the trigger mechanism in order to interrupt the projection on one arrested visible image. A video camera serves to produce a video image of the arrested image and to selectively detect the trace of the infrared beam on the arrested image and to determine the trace location in its video image. A visible indication of the trace location is inserted electronically in the video image of the arrested image.
    Type: Grant
    Filed: December 11, 1984
    Date of Patent: April 14, 1987
    Assignee: Giravions Dorand
    Inventors: Jean-Claude Allard, Rene Briard, Christian Saunier
  • Patent number: 4577962
    Abstract: A firing weapon is associated with a laser radiation source mounted in proximity to the weapon and also with a detector which is sensitive to the laser radiation. The orientation of the radiation is adjusted independently of the aiming of the weapon in order to carry out continuous detection of the target as a result of detection of radiation by the detector after reflection from the target. The orientation and the time of transit of radiation between source and target are utilized in order to obtain target data relating to position in elevation and in azimuth as well as distance of the target. The data are processed in order to orient a real shot or in order to compare the data quantitatively with the position of a simulated projectile which follows a fictitious trajectory.
    Type: Grant
    Filed: October 6, 1983
    Date of Patent: March 25, 1986
    Assignee: Giravions Dorand
    Inventors: Pierre de Guillenschmidt, Jacques Hubert, Michel Goujon, Christian Saunier
  • Patent number: 4534735
    Abstract: The simulation device provides training in the firing of rockets or guided missiles by means of a shoulder weapon. As soon as a shot is fired, the firer's field of view is occulted by a shutter. The aim at the instant of firing and the point of impact with respect to the target are displayed on an instructor's video screen. The target can be of a fictitious type generated by a computer and produced within the field of view of both the instructor and the firer at the same time. In the case of a real target, an index can be controlled by the instructor in order to locate the target and follow its progress up to the instant of firing. The result of the firing operation is judged according to the position of the point of impact with respect to the fictitious target or with respect to the index. The choice of the mode of operation is made on a control desk.
    Type: Grant
    Filed: July 27, 1983
    Date of Patent: August 13, 1985
    Assignee: Giravions Dorand
    Inventors: Jean-Claude Allard, Rene Briard, Christian Saunier
  • Patent number: 4521196
    Abstract: In a training unit for aiming at fictitious targets as applicable in particular to a firing simulator, provision is made for an optical sighting device in which the line of sight from reticle image to target is orientable at least at the start of a fictitious-firing event. Target signals define successive images of a fictitious target as a function of the shape and continuous relative displacement of the target at least in distance from the training unit and/or in angular position with respect to the line of sight. Each successive target image is formed by means of a luminous point moving on a screen, the successive images thus formed being projected in the field of view of the sighting device.
    Type: Grant
    Filed: June 9, 1982
    Date of Patent: June 4, 1985
    Assignee: Giravions Dorand
    Inventors: Rene Briard, Christian Saunier, Guy Canova