Patents Assigned to Thomson-CSF
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Patent number: 5396498Abstract: The instant invention relates to complex integrated circuits incorporating circuits for internal testing. The test controller has:a finite-state machine or status register (RE1 to RE4), the parallel outputs of which are looped back to the parallel inputs via a logic (LCB) which is also able to receive external control signals (TMS, TCK, TRST);multiplexers (MU1 to MU4) associated with the cells of the status register to allow for operation of the status register either in series or parallel;and a control signal generating stage (GSC) connected to the output of the register to supply control signals for other elements of the test: circuitry depending on the state defined by the status register.According to the instant invention, it is proposed that the multiplexers be provided with additional inputs making it possible to store the state of at least certain control signals in these cells for the purpose of transmitting them later for observation.Type: GrantFiled: December 6, 1991Date of Patent: March 7, 1995Assignee: Thomson CSFInventors: Patrick Lestrat, Regis Leveugle
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Patent number: 5396482Abstract: A system for the reading of information elements stored in optical form makes use of the fact that the light of the illumination source of the optical disk is a coherent source to constitute a hologram on an array of photodetectors. This hologram is the composition of the unmodulated incident beam of the source with the beam reflected by the disk, modulated by the information elements to be read. An operation comprising signal processing by Fourier transform, shifting in the spatial frequencies plane and reverse Fourier transform is used to reach the information elements recorded on the disk. The detection of the information elements can be far more complete than in the case of the conventional reading of optical disks for it brings into play not only the total modulation of light energy of the laser beam but also the phase modulation.Type: GrantFiled: July 9, 1992Date of Patent: March 7, 1995Assignee: Thomson-CSFInventor: Jean-Claude Lehureau
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Patent number: 5394393Abstract: A method for the routing of a packet of data in a digital transmission network where each packet is formed by a header, enabling this packet to be identified and guided, and a part containing information elements to be conveyed. This method consists, at each node of the network, of a first step for extracting, from the header, the address of a word of a memory containing the information elements needed to identify the header and to guide the data elements conveyed by the packet coming into the node and a second step for creating, according to the header of the incoming packet and the information elements contained in the word of the memory, a new address designating a memory zone containing at least one new header and the information on the outgoing direction of the packet or packets coming out of the node. The method can be applied to digital transmission networks where it is necessary to identify and route packets of data.Type: GrantFiled: August 18, 1992Date of Patent: February 28, 1995Assignee: Thomson-CSFInventors: Jacques Brisson, Jean Caillemer, Thierry Grenot
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Patent number: 5394118Abstract: A digital circuit having a first section for converting a low-frequency signal into a sampled single sideband signal, coupled to a second section for separating the sampled SSB signal into its two components, the phase and envelope components.Type: GrantFiled: November 16, 1993Date of Patent: February 28, 1995Assignee: Thomson-CSFInventors: Bernard Darges, Jean-Francois Helm, deceased, by Veronique Helm wife Gauthier, legal representative
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Patent number: 5394186Abstract: The disclosure relates to the processing of sets of digital signals coming from different outputs of an optical sensor such as a line of photo-detectors. There is proposed a device which, singly or severally and after simple programming of the circuits that form it, can be used to make a video transformer for optical sensors. This device comprises chiefly:--several memorization circuits each designed to receive a digital signal coming from one of the outputs of the sensor; --programmable addressing means to write in the memorization circuits and to read these circuits;--change-over or selector means to offer the choice from among different configurations of links between the inputs of the device and the ports of the memorization circuits. Application in particular to the processing Of the digital video signals coming from lines of photo-detectors.Type: GrantFiled: April 22, 1993Date of Patent: February 28, 1995Assignee: Thomson-CSFInventors: Jacques Antoine, Jean-Marc Clairgironnet, Patrick Vejus
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Patent number: 5394196Abstract: The present invention relates to a method of classifying the pixels of an image belonging to a sequence of moving images, as well as to a method of temporal interpolation of images using this classification. The method of classifying the pixels of an image t(j+1) pertains to temporal projection of the field of motion of an image t(j) belonging to a sequence of moving images, with the pixels of the image t(j) being defined by a motion vector and by a tag belonging to a class such as "normal", "occluding" or "appearing". The method is characterized by the fact that, before projection, all pixels of t(j) are tagged "appearing", and then, during the temporal projection, the tagging is modified as a function of the tagging of the pixels of t(j) in such a way as to obtain a tagging according to the same above classes (i.e., normal, occluding, or appearing).Type: GrantFiled: November 19, 1992Date of Patent: February 28, 1995Assignee: Thomson-CSFInventor: Philippe Robert
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Patent number: 5394412Abstract: Power laser includes a non-linear medium (NL1) within which a first beam of fixed direction (I1) and a second beam of orientable direction interfere with each other, an amplifying medium (2) placed along the direction of the first beam for amplifying the received light for transmitting an amplified beam towards the non-linear medium (NL1), which retransmits this bean in the direction of the second beam, and therefore in an orientable direction.Type: GrantFiled: May 12, 1993Date of Patent: February 28, 1995Assignee: Thomson-CSFInventors: Jean-Pierre Huignard, Jean-Luc Ayrai, Claude Puech
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Patent number: 5392181Abstract: The disclosure relates to a magneto-optical reading head. A magneto-optical head comprises an optically active part which is a very thin magnetic layer that causes the rotation of the plane of polarization of the light as a function of its magnetic polarization which is itself linked to the magnetic polarization of the magnetic tape that bears the information elements to be read and moves past the thin layer. Instead of using a focusing optical device to illuminate the optically active part, it is provided that the head will comprise an optical guide which ends directly before the active part and is such that the plane of incidence of the light rays on the optically active part is perpendicular to the general direction of elongation of a gap region before which the magnetic tape passes.Type: GrantFiled: July 31, 1992Date of Patent: February 21, 1995Assignee: Thomson-CSFInventors: Jean-Claude Lhureau, Christian Maillot
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Patent number: 5389935Abstract: The system comprises, on the one hand, a network of radiogoniometers (4.sub.1. . . 4.sub.n) which are coupled to at least one computer and are arranged at well-determined locations of areas of a region, and on the other hand, a set of radio distress beacons (2) which are arranged inside vehicles (1) moving within the areas of the region. The computer (6) comprises means of processing information emitted by the distress beacons and means of connection for locating and identifying in the region the beacons emitting distress signals and for transmitting the corresponding information to the emergency services (9) closest to the places of emission by the beacons.Type: GrantFiled: March 23, 1994Date of Patent: February 14, 1995Assignee: Thomson-CSFInventors: Didier Drouault, Jean Potage
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Patent number: 5387933Abstract: In a system for the protection of cameras against countermeasures using, in particular, laser rays to saturate the sensors of the detector of the camera, each of the usual integration circuits connected respectively to the n sensors is preceded by an intermediate integration circuit, the contents of which are transferred into the usual integrated circuit at a rate higher than that used for the transfer of the contents of the usual integration circuit; the contents of the intermediate integration circuit are measured; the transfer of these contents is prevented when their value is excessively high. Application to detector-fitted cameras working in the infra-red, visible or ultra-violet ranges.Type: GrantFiled: December 23, 1992Date of Patent: February 7, 1995Assignee: Thomson-CSFInventors: Jean-Pierre Fouilloy, Francois-Xavier Doittau
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Patent number: 5386308Abstract: Material made up of a thin layer between two surfaces, a first and a second, to be used as the third layer of a transparent goggles face, the first layer being a screen and the second layer being a thickness layer, remarkable in that the material consists of a formable transparent polymer matrix having a refractive index and containing micro-cavities in the form of lenses, the micro-cavities being made from a transparent material different from that of the matrix, the refractive index of the material of the micro-cavities changing under the influence of an electric field applied across it, for a first field value the refractive index being equal to that of the matrix, and for a second field value being greater than that of the matrix, a pair of electrodes being associated with each micro-cavity.Type: GrantFiled: June 3, 1994Date of Patent: January 31, 1995Assignee: Thomson-CSFInventors: Claude Michel, Jean-Pierre Le Pesant
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Patent number: 5384392Abstract: The invention is a new process to produce polyparaphenylene vinylene or polyparathienylene vinylene polymers using a sulfonium-based polyelectric precursor. This precursor is treated directly with acid to obtain the polymers required. These polymers have high molecular weights and are particularly advantageous in the plastics transformation field.Type: GrantFiled: June 17, 1992Date of Patent: January 24, 1995Assignee: Thomson-CSFInventors: Olivier Sagnes, Jean-Claude DuBois, Valerie Massardier, Tran van Hoang, Alain Guyot
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Patent number: 5384801Abstract: A laser is capable of working at a wavelength L.sub.2 from an active material capable of generating radiating emissions at at least two wavelengths L.sub.1 and L.sub.2, through the presence of a semiconductor plate in the laser cavity. Notably, the laser can generate wavelengths ranging from 1.4 .mu.m to 2 .mu.m, a range in which the optical damage threshold of the eye is high, from an Nd.sup.3+ doped YAG having numerous radiating emission wavelengths ranging from 0.946 .mu.m to 1.8 .mu.m.Type: GrantFiled: September 23, 1992Date of Patent: January 24, 1995Assignee: Thomson-CSFInventors: Jean-Paul Pocholle, Jean-Marc Breteau, Michel Papuchon, Claude Puech
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Patent number: 5381909Abstract: A winch makes it possible for a fish fitted with sonar to be towed behind a boat. The winch includes a sensor for measuring the attitude of the fish and a device for controlling, using this measurement, a servo cylinder actuator which alters the inclination of the jib to keep this attitude constant. The winch makes it possible to reduce jerks in the tensile stress applied to the cable which tows the fish.Type: GrantFiled: November 22, 1993Date of Patent: January 17, 1995Assignee: Thomson-CSFInventor: Francois Warnan
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Patent number: 5381410Abstract: A transit switch of an asynchronous network, notably an ATM network, for the handling of information elements in the form of packets having a header part for the identification of a destination and a information element part, having a plurality of input junctors supplied with packets by a plurality of associated input channels, there are also a plurality of output junctors connected to the input junctors by a synchronous bus, a bus allocator circuit is connected to the input junctors and to the bus. The switch is arranged so that each input junctor transfers a received packet to at least one output junctor which is identified from the header part of the packet to be transferred.Type: GrantFiled: June 8, 1993Date of Patent: January 10, 1995Assignee: Thomson-CSFInventor: Thierry Grenot
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Patent number: 5381005Abstract: An optical fiber stress detector in which the light beam transmitted in the optical fiber which has to detect stresses is modulated in amplitude by a microwave alternating signal. The signal coming from the fiber is demodulated and then transmitted to a detector which measures the phase-shift existing between the demodulated signal and a signal derived from the modulation alternating signal. Application to the detection of stresses in any composite structures such as public constructive works, aircraft wings etc.Type: GrantFiled: April 2, 1993Date of Patent: January 10, 1995Assignee: Thomson-CSFInventors: Jean Chazelas, Marc Turpin
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Patent number: 5378683Abstract: The disclosure relates to a Josephson junction formed by a non-superconducting barrier between two superconducting films of the (R) BaCuO (R=rare earth) group. In order to take advantage of the greater coherence length of superconductors along the CuO planes, i.e. perpendicularly to the long axis "c" of the crystal unit cell, the superconducting film is oriented so that the axis "c" is parallel to the plane of the junction. The device can be applied to Josephson junctions and to SQUIDs.Type: GrantFiled: April 21, 1992Date of Patent: January 3, 1995Assignee: Thomson-CSFInventors: Regis Cabanel, Guy Garry, Alain Schuhl, Bruno Ghyselen
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Patent number: 5379140Abstract: Material made up of a thin layer between two surfaces, a first and a second, to be used as the third layer of a transparent goggles face, the first layer being a screen and the second layer being a thickness layer, remarkable in that the material consists of a formable transparent polymer matrix having a refractive index and containing micro-cavities in the form of lenses, the micro-cavities being made from a transparent material different from that of the matrix, the refractive index of the material of the micro-cavities changing under the influence of an electric field applied across it, for a first field value the refractive index being equal to that of the matrix, and for a second field value being greater than that of the matrix, a pair of electrodes being associated with each micro-cavity.Type: GrantFiled: June 3, 1994Date of Patent: January 3, 1995Assignee: Thomson-CSFInventors: Claude Michel, Jean-Pierre Le Pesant
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Patent number: 5376903Abstract: In a pulse compression device, the pulses to be compressed being frequency modulated, the device comprises at least one transmission line, the cut-off frequency of which varies along its axis of propagation and means for the separation of an incident wave and a reflected wave, loaded by the transmission line and receiving the pulses to be compressed which get reflected along the transmission line, the variation of the cut-off frequency and the frequency modulation of the pulses being matched with each other. Application: high power pulse compression in microwave transmission. FIG. 3a.Type: GrantFiled: May 21, 1993Date of Patent: December 27, 1994Assignee: Thomson-CSFInventor: Gerard Kantorowicz
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Patent number: 5376900Abstract: A push-pull output stage for electronic integrated circuits includes two NPN transistors (Q1, Q2) connected in series between two supply terminals. The output (S) is the junction point of the transistors. A third NPN transistor (Q3) has its base and its collector connected respectively to the base and to the collector of Q1. Two current flow arms (R1, Q4 and R2, Q5) are formed, one to establish a current depending on the potential of the emitter of Q3 and the other to establish a current depending on the potential of the emitter of Q1. The arms are mounted in a current mirror arrangement, the second arm tending to copy the current of the first arm; the current mirror generating a current output (S2) representing a difference between the current set up in the second arm and the current copied from the first arm. This current output is used to control the conduction of the second transistor (Q2).Type: GrantFiled: March 3, 1993Date of Patent: December 27, 1994Assignee: Thomson-CSF Semiconducteurs SpecifiquesInventor: Jean-Francois Debroux