Patents Assigned to Thomson
  • Collapsible display and dispensing device
    Patent number: 4785944
    Abstract: A display and dispensing device includes a collapsible cardboard rack having a rear wall and hinged side walls provided with vertically spaced longitudinal recesses delineating forwardly projecting pairs of arms having track delineating top edges and cross pieces extending between and hinged at their opposite ends to the front ends of the arms of each pair. A shelf member having side channels slidably engaging each pair of tracks is supported by each pair of arms and has a rearwardly projecting apertured tab projecting through a respective opening in the rack rear wall and interlocked with a tongue located in the opening.
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: November 22, 1988
    Assignee: Thomson-Leeds Company, Inc.
    Inventor: David March
  • Non-volatile shadow storage cell with improved level shifting circuit and reduced tunnel device count for improved reliability
    Patent number: 4787066
    Abstract: A non-volatile storage cell utilizing improved level shifting circuitry to charge and discharge at least a single isolation device, preferably of the Fowler-Nordheim tunneling type, wherein such level shifting input/output circuit is fully static providing for the elimination of any requirement for a gate booster capacitor and allows the high voltage source to replace any long term charge loss. The use of silicon area is reduced.
    Type: Grant
    Filed: August 3, 1987
    Date of Patent: November 22, 1988
    Assignee: SGS-Thomson Microelectronics, Inc.
    Inventor: Horst Leuschner
  • PIN photodiode formed from an amorphous semiconductor
    Patent number: 4784702
    Abstract: The invention provides a PIN photodiode in which at least one of the P, I, N layers is formed by a composition multi-layer including undoped superimposed layers of amorphous semiconductor and undoped insulator. In one embodiment, the P and N layers are formed by an amorphous multi-layer, with five periods for the P layer and nine periods for the N layer, and the I layer is formed from an amorphous semiconductor.
    Type: Grant
    Filed: April 16, 1987
    Date of Patent: November 15, 1988
    Assignee: Thomson-CSF
    Inventor: Yves Henri
  • Frequency doubling oscillator working at ultra-high frequencies
    Patent number: 4783638
    Abstract: The invention pertains to a doubling oscillator with low noise in the vicinity of the carrier frequency. The doubling oscillator of the invention is of the "push-push" type comprising two parallel-mounted transistors. The gates of these two transistors have a common oscillating circuit comprising two microstrip lines, two resistors and a common dielectric resonator positioned between the two microstrip lines. To reduce the low-frequency noise in the vicinity of the carrier near the load, the non-correlated low frequency noise sources of the transistors are either placed in series by means of a choke and two capacitances mounted at the ends of the microstrips or loaded at an infinite impedance through two capacitances mounted at the ends of the microstrips. This oscillator has applications in ultra-high frequency systems, radars and telecommunications.
    Type: Grant
    Filed: June 10, 1987
    Date of Patent: November 8, 1988
    Assignee: Thomson-CSF
    Inventors: Marguise Mamodaly, Pascal Colin, Alain Bert, Juan Obregon
  • Device for eliminating fixed echoes in a radar
    Patent number: 4782343
    Abstract: A device for eliminating fixed echoes in a pulse radar. The device is provided with a demodulator unit where intermediate frequency signals of the radar are demodulated into video-frequency signals. The video-frequency signals are utilized in a utilizing unit provided with a display unit. A processing unit of the video-frequency signals is connected between the demodulator means and the utilizing unit. The processing unit is constituted with a range unit sampling circuit, a Doppler filtering unit and a video-frequency signal dynamic compressing unit connected in series.
    Type: Grant
    Filed: November 22, 1978
    Date of Patent: November 1, 1988
    Assignee: Thomson-CSF
    Inventor: Jean Claude Marchais
  • Image sensor with memory
    Patent number: 4782227
    Abstract: Image sensor with memory and, more especially, image sensor with reading by thermal effect.This sensor comprises mainly a layer of a photoconductive material and a layer of a transparent material, the impedance of which varies with the temperature, these two layers being comprised between two electrodes. Furthermore, a voltage generator can be connected to the electrodes during the recording when the device is illuminated. Finally, a charge amplifier can be used to detect a current when the unit is heated.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: November 1, 1988
    Assignee: Thomson-CSF
    Inventors: Francois Micheron, Dominique Broussoux, Jacques Trotel
  • Coupling device for transmitting axial movement to a rotatable body
    Patent number: 4782411
    Abstract: A coupling device for the transmission of an axial movement from a lift generator to a rotatable, axially movable body, composed of: a component creating a pressure-transmitting contact between the lift generator and the body; and a device including a magnet producing a magnetic field which creates a magnetic attraction force between the lift generator and the body.
    Type: Grant
    Filed: February 25, 1987
    Date of Patent: November 1, 1988
    Assignee: Deutsche-Thomson-Brandt GmbH
    Inventor: Adelbert Schalk
  • Process for imaging by nuclear magnetic resonance
    Patent number: 4780674
    Abstract: The invention proposes an imaging process by nuclear magnetic resonance in which a calculated image is given corresponding to the molecular diffusion value at each point of an investigated medium. The diffusion image is obtained by comparing images relative to same sections of the medium and acquired during two excitation sequences, whereof one is not very sensitive to the diffusion and the other is particularly sensitive thereto. These two images undergo comparison in order to produce a diffusion image.
    Type: Grant
    Filed: December 24, 1986
    Date of Patent: October 25, 1988
    Assignee: Thomson-Cgr
    Inventors: Eric Breton, Denis Le Bihan
  • Rotary curtain antenna
    Patent number: 4780725
    Abstract: So as to allow modification of the radiation diagram of a rotary curtain antenna, the doublets of a curtain are distributed in groups of one or several doublets and each group has its own feed line which connects it to a switching box situated in the mast of the antenna and which is constructed so as to bring to the box an impedance inversely proportional to the number of doublets fed by this line; this box allows all or part of the groups of doublets to be fed at will from a mast down line. Dynamic impedance matching cells disposed at the foot of the antenna provide a small standing wave ratio for connection with a transmitter.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: October 25, 1988
    Assignee: Thomson-CSF
    Inventor: Francois Ursenbach
  • Circuit for controlling a brushless electric motor
    Patent number: 4780652
    Abstract: A control circuit for controlling a brushless motor for a washing machine comprises AC main voltage, a phase-trimming circuit for trimming the AC main voltage and supplying the trimmed AC main voltage to the stator windings of the brushless motor, depending on a control voltage derived from a rotor position sensor of the brushless motor. The phase-trimming circuit changes the polarity of the trimmed AC main voltage so that a first polarity is supplied to a first stator winding and a second polarity is supplied to a second stator winding of the brushless motor.
    Type: Grant
    Filed: November 4, 1986
    Date of Patent: October 25, 1988
    Assignee: Deutsche Thomson-Brandt GmbH
    Inventor: Gerard Rilly
  • Device for the cooling of an x-ray source
    Patent number: 4780901
    Abstract: A device is disclosed for the cooling of an X-ray tube contained in a casing, using a fluid put into forced circulation in a cooling circuit comprising a heat exchanger. The device of the invention can be used to obtain efficient cooling while, at the same time, using a small volume of fluid and a heat exchanger of smaller size than in the prior art. To this end, the cooling circuit comprises means to, firstly, store a quantity of heat accumulated by the fluid when the latter reaches a pre-determined temperature during an examination period and, secondly, to restore this quantity of heat during an idle period which follows the examination period.
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: October 25, 1988
    Assignee: Thomson CGR
    Inventors: Emile Gabbay, Jacques Le Guen
  • Radiogenic tube radiological device with magnetic bearings
    Patent number: 4780900
    Abstract: A radiological device is provided of the type comprising a radiogenic tube with magnetic bearings, said radiogenic tube being contained in a sheath as well as electronic means for controlling said magnetic bearings.
    Type: Grant
    Filed: April 23, 1986
    Date of Patent: October 25, 1988
    Assignee: Thomson-CGR
    Inventors: Emile Gabbay, Andre Plessis
  • Photosensitive semiconductor device and a method of manufacturing such a device
    Patent number: 4780394
    Abstract: A photosensitive semiconductor device is provided comprising transparent gates, whose side walls are made from silicide and which, apart from these side walls, are formed from polycrystalline silicon.
    Type: Grant
    Filed: May 21, 1986
    Date of Patent: October 25, 1988
    Assignee: Thomson-Csf
    Inventors: Pierre Blanchard, Jean P. Cortot
  • Device for connecting on site two optical fiber transmission cables
    Patent number: 4779951
    Abstract: A device for connecting on site two optical fiber transmission cables comprises a table for installation in a cable tunnel on the site and which is provided with a notch on its circumference, a tight box which bears against the table and whereof the two lateral faces have two openings in which are engaged the two cables to be connected, a splicing bench positioned in the table notch and on which are arranged tools for splicing the two cables, and means for joining the bench to the table.
    Type: Grant
    Filed: March 1, 1982
    Date of Patent: October 25, 1988
    Assignee: Thomson-CSF
    Inventors: Andre Bouvard, Jean P. Hulin, Michel de Vecchis
  • Projectile containing sub-munitions with controlled directional release
    Patent number: 4777882
    Abstract: A projectile forming the head of a carrier has a defined balllistic trajectory and contains sub-munitions ejected, at a given moment in the trajectory of the projectile, in a controlled direction. In the projectile, the sub-munitions are arranged so as to have a single direction, namely with the head of the sub-munition facing the front of the projectile, in one or more rows. In each row, the shells of the sub-munitions are tangential to one another and their fin systems ar placed in one another in a self-locking way. The projectile further comprises securing means among the sub-munitions and between these interstitial spaces are further filled with a powdery material.
    Type: Grant
    Filed: July 8, 1987
    Date of Patent: October 18, 1988
    Assignee: Thomson-Brandt Armements
    Inventor: Gerard Dieval
  • Integrated optics polarizing device
    Patent number: 4778234
    Abstract: An integrated optics polarizing device having a flat substrate made for example from lithium niobate, in which an integrated wave guide has been created by doping with titanium ions and one or more so called interaction regions interacting on the wave, formed within the material of the substrate, and having refraction indices such that a wave with a first polarization direction propagates in a guided mode in said wave guide and a wave with an orthogonal polarization is extinguished. Said interaction regions are obtained by modifying the material of said substrate in a controlled way by doping or ion substitution.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: October 18, 1988
    Assignee: Thomson CSF
    Inventors: Michel Papuchon, Sylvie Vatoux
  • Sonar transducer system for image formation
    Patent number: 4779239
    Abstract: A sonar transducer comprising a stack of an even number of antennae with identical linear networks. The stack is driven by a reciprocating rotary movement of low amplitude, with the antennae alternately emitting and receiving with each half wavelength of the rotary movement. The emitting antennae as well as the receiving antennae are mutually staggered by an angle equal to the angle of rotation of the assembly. The assembly of receiving antennae are staggered with respect to the assembly of emitting antennae by an angle equal to the phase delay of an emission lobe with respect to the corresponding reception lobe.
    Type: Grant
    Filed: October 22, 1984
    Date of Patent: October 18, 1988
    Assignee: Thomson-CSF
    Inventor: Georges Grall
  • Method of and circuitry for generating information relating to speed of rotation in a circuit for controlling a brushless direct-current motor in order to regulate it with digital controls
    Patent number: 4777415
    Abstract: The invention concerns a speed-control system, method and circuit for carrying out the system, for a brushless direct-current motor using a digital servo loop, specifically an economical and simple means of generating precise information relating to speed of rotation that can also be converted into digital words that can be processed by a microprocessor or by wired components in normal digital switching circuits like counters, gates, adders and subtractors, flip-flops, multipliers, memories, etc. The motor has a permanent-magnet rotor. The voltage at at least one of the stator windings is employed to generate speed information. This is converted by means of a threshold detector into a rectangular wave that can be further processed by the circuit.
    Type: Grant
    Filed: November 4, 1986
    Date of Patent: October 11, 1988
    Assignee: Deutsche Thomson-Brandt GmbH
    Inventor: Gerard Morizot
  • Audio-video adapter for audiovisual equipment
    Patent number: 4777503
    Abstract: Audio-video adapter for connecting two pieces of audiovisual equipment together that are to operate in conjunction in recording and playback but have audiovisual-connection sockets of differing standards, the European Standard (SCART) and the DIN for example. The adapter has a path selector, which controls the direction that the signals travel in. In one of its states the path selector activates a logic circuit that triggers the switchover device, switching through the appropriate signal paths.
    Type: Grant
    Filed: April 8, 1986
    Date of Patent: October 11, 1988
    Assignee: Deutsche Thomson-Brandt GmbH
    Inventor: Lothar Kramer
  • Shelf extender attachment for displaying merchandise
    Patent number: D298501
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: November 15, 1988
    Assignee: Thomson Leeds Company, Inc.
    Inventor: David March