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Assignee: Societe Anonyme de Telecommunications (FR)


Location: Not specified.
No. of patents: 25

NumberTitleIssue Date
4815092Laser generator with zeolitic catalyst carrier and method of making same
A laser generator with a catalyst for the laser gas is provided comprising a cavity which communicates with a housing receiving a catalytic cartridge, which communicates also with a laser gas reserve, and which is subjected to the action of the heat relea...
03/21/1989
4768207Systems for receiving messages transmitted by pulse position modulation (PPM)
The present invention relates to remote control or trajectory calculation systems for missiles for example, and in particular to a message receiving device which may be mounted on the missle itself. The receiver of the invention comprises means for receiving t...
08/30/1988
4709227Method and device for inserting a digital signal in a channel with higher flow rate
A method and device for inserting a digital signal in a channel at a higher flow rate is provided, for example for transcribing from 704 Kbit/s into 2048 Kbit/s, wherein each binary element of the low flow rate channel is associated with a triplet whose f...
11/24/1987
4636631Photoconducting detector in optical immersion
The invention relates to a photoconducting detector in optical immersion, comprising a detector wafer in Hg1-x Cdx Te, on a quartz substrate, and a hemispherical lens in CdTe, assembled on each other by a layer of photosensitive resi...
01/13/1987
4636828Optical immersed type photovoltaic detector
The invention relates to an immersed type photovoltaic detector comprising a substrate transparent to infrared radiations and a wafer in semiconducting material. A PN junction is formed in the wafer, on the side opposite the substrate, with a zone of cond...
01/13/1987
4622684Device for recognition of binary words
The device according to the invention is useful for recognizing binary locking words in a digital train. It comprises six flip flops connected to an AND gate for recognizing the first six bits of the locking words. The first five flip flops are connected ...
11/11/1986
4567329Line circuit for network junctor
The present invention relates to a line circuit for network line junctor and more particularly to a dialling device. The dialling device according to the invention presents a high impedance for the direct current, the direct current being regulated about ...
01/28/1986
4565339System for guiding a missile by a flat light pencil beam
The system is intended to determine the angular deviation of the missile to direct it into a target. It comprises a laser, a rotating convergent cylindrical lens to convert the laser beam into a flat, elongated, rotating pencil beam. The missile bears one...
01/21/1986
4540139Passive missile homing system
A passive homing system for missiles is provided having at least three interferometric bases each comprising two electromagnetic antennae disposed on the missile. Said three interferometric bases have respective mid-perpendicular planes which are inclined...
09/10/1985
4532699Process for manufacturing a matrix infrared detector with illumination by the front face
A parallelepipedic detection wafer of type p made of Hg Cd Te is taken, islets or raised zones are formed from the front face and their structure is rounded, zones of type n are diffused from the front face, in order to form junctions, metallic contact te...
08/06/1985
4450716Process and device for measuring the pressure of tires, particularly for aircraft
A device for measuring the pressure of tires, particularly for aircraft, comprising a passive sensor adapted linearly to convert a variation in pressure into an electrical information variation, in situ, means adapted to convey the electrical information ...
05/29/1984
4418096Process for preparing layers of Hg1-x Cdx Te
A process for preparing layers with a superficial composition of Hg1-x Cdx Te comprising the steps of producing a wafer by forming a layer of superficial composition Hg1-y Cdy Te on a substrate of CdTe, y being ...
11/29/1983
4375013Device for digit rate reduction of PCM-signals
A digit rate reducing system for PCM signals comprises a predictor stage, an automatic gain control stage, and a quantizer stage for adaptive quantizing. The predictor stage includes a predictor and a subtractor for subtracting from a sample xn...
02/22/1983
4355206Ringing control device
A ringing control device for a group of subscriber lines served by a connection network, comprising a relay for each line, the connection network providing a ringing control signal and a timing signal for controlling the relay, a ringing generator common ...
10/19/1982
4350168Hyperthermic treatment device
A device for hyperthermia treatment using radio-frequency generation applied externally to the surface of a patient's body and a temperature measuring device comprising thermocouples in hypodermic needles to be inserted in the patient's body, the output o...
09/21/1982
4206427Electromechanical filters
An electromechanical filter having two transducers and a mechanical filter vibrating in longitudinal mode, which includes a plurality of resonators connected to each other by coupling rods. The resonators are arranged in two sections and staggered, and th...
06/03/1980
4198374Volatile liquid supply equipment and processes for introducing volatile cross-linking agents into polyolefin compounds and for the extrusion of cross-linkable polyolefin compounds
A volatile cross-linking agent such as liquid peroxide is introduced, at ambient temperature and under atmospheric pressure directly into the input of an extruder at the same pressure as a polyolefin compound to be cross-linked. The resulting compounds ar...
04/15/1980
4193051Magnetostrictive mechanical filter
A magnetostrictive mechanical filter comprising at least one rod of a magnetostrictive material forming a resonance element, a spool surrounding the rod, a field coil the windings of which are wound around the spool, and magnets creating a continuous magn...
03/11/1980
4183482Night guiding device for self-propelled missiles
A device for guiding by night self-propelled missiles, comprising a daylight sighting telescope and an infrared goniometer which in association are called here daylight localizing apparatus, for spotting an infrared source carried by the missile, and a th...
01/15/1980
4184132Electromechanical filters
A pass-band electromechanical filter, comprising a mechanical unit vibrating in the longitudinal mode mounted between two electromechanical transducers, said unit comprising a plurality of half wave resonators mounted in series and coupling rods connectin...
01/15/1980
4151968Night guiding device for self-propelled missiles
A night guiding device for self-propelled missiles, comprising a daylight sighting telescope and an infrared goniometer, the unit being called a localizing apparatus, for detecting an infrared missile-borne source, or tracer, a night sighting thermal tele...
05/01/1979
4060832Digit rate reducing method in video signal transmission
A digit rate reducing method in the transmission of video-telephone signals, wherein each frame is scanned by means of two consecutive fields comprising each the lines of same parity, each frame dot being represented by a word of n, in particular 3, binar...
11/29/1977
4029893Double-wall cryostat having electrical connections
A double-wall cryostat formed by the interconnection of an inner wall and an outer wall in their upper part, the walls defining therebetween a hermetic enclosure in which there is disposed a detector element connected by an electrical connection to circui...
06/14/1977
4004101Method and device for detecting occupancy of telecommunication channels
A system for detecting the occupancy of the channels of a telecommunication network and monitoring the transmission of signals, wherein the signals on a telephone line are sampled to detect the quasi-periodic nature of speech signals for long enough to di...
01/18/1977
3988774Process for producing a photodiode sensitive to infrared radiation
A process for producing a photodiode sensitive to infrared radiation, obtained by the planar technique, constituted by a semiconducting material comprising a substrate of type p (or n) and a zone of type n (or p) forming the junction, wherein a thin layer...
10/26/1976
 
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