Patents Assigned to Compagnie Industrielle des Telecommunications Cit-Alcatel
  • Connector for optical fibres
    Patent number: 4130344
    Abstract: The ends of two optical fibres to be joined are housed in sleeves which include assembly means for uniting the sleeves front face to front face. A point-line-plane positioning arrangement ensures that each time the connector is re-closed its sleeves take up the same axial disposition with respect to each other. Structure is provided to adjust the axial position of the fibres so that they look into each other at the said same axial disposition. Once set up the connection can be repeatedly opened and closed with reproducible transmission characteristics.
    Type: Grant
    Filed: August 19, 1977
    Date of Patent: December 19, 1978
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel
    Inventor: Jean-Louis Lemonde
  • Terminal equipment for a multiplex carrier current telephone system
    Patent number: 4130743
    Abstract: The invention relates to terminal equipment for a carrier current multiplex system with a half echo-suppressor and a channel modem. The attenuator which is inserted in the transmission chain is disposed after a first modulation stage, thereby taking advantage of the propagation time of the filters of the modem to reduce the apparent reaction of the attenuator.
    Type: Grant
    Filed: August 2, 1977
    Date of Patent: December 19, 1978
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel
    Inventors: Claude Boulanger, Christian Poinas
  • Date time-multiplex switching network for use in a telecommunications exchange
    Patent number: 4127745
    Abstract: A time-multiplex connection network comprising an inlet stage and an outlet tage to which transmission lines are connected, and a switching stage. It constitutes a modular network with a matrix structure, in which the West-East lines represent modules, each comprising:Line equipment for a group of subscribersInlet storage serving the line equipmentA switching sub-group pertaining to each group in the switching stageInterfaces with control logic and signalling equipment.
    Type: Grant
    Filed: March 23, 1977
    Date of Patent: November 28, 1978
    Assignee: Compagnie Industrielle des Telecommunication Cit-Alcatel S.A.
    Inventors: Rene' Deglin, Francoise Crapet
  • Data transmission system and application thereof to the transmission of analog signals and of data in a network with delta modulation
    Patent number: 4122300
    Abstract: The invention relates to a system for data transmission in analog form in which data is coded such that a pulsed bivalent signal is obtained which can be physically integrated; this bivalent signal, considered as formed by a juxtaposition of elementary bits at a higher rate is processed in a DELTA demodulator as if these elementary bits were the digital representation of an analog signal which has undergone a corresponding DELTA modulation. Data is transmitted in the form of the analog signal delivered by this demodulator. On reception, the analog signal received is applied to a DELTA modulator which operates preferably in slope overload and which supplies a DELTA bit train reproducing the bivalent transmission signal of the transmission and enabling the signals to be restored after decoding.
    Type: Grant
    Filed: March 15, 1977
    Date of Patent: October 24, 1978
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel
    Inventors: Rene Busigny, Pierre H. Fuerxer
  • Frame synchronizing device
    Patent number: 4121057
    Abstract: The invention relates to the frame synchronization of a first binary pulse train with a second binary pulse train. According to the invention, three looped shift registers are provided which each have a capacity of one complete frame and two identical control circuits are provided which cyclically respectively connect the input and output of the device to the inputs and outputs of the registers. In the case of divergence of frequencies between the two pulse trains, one complete frame is either repeated twice or completely omitted.
    Type: Grant
    Filed: August 2, 1977
    Date of Patent: October 17, 1978
    Assignee: Societe Anonyme dite Compagnie Industrielle des Telecommunications Cit-Alcatel
    Inventor: Jacques Luder
  • Control unit for a time-division telecommunications exchange
    Patent number: 4119803
    Abstract: In an existing time division exchange system the known switching network and connection units are retained, but the control of these units is taken over by a pair of new control units which replace a collection of previous units such as multi-registers, markers, translators, call charging devices etc. The new control units each comprise a multi-register portion and a dialogue portion with the multi-register portion governing the setting up and the clearing down of traffic while the dialogue portion performs most of the communication between the multi-register portion and the rest of the exchange equipment. The control units are microprogrammed machines under the control of a "macroprogram" assembled using the conventional computer techniques. The control units are connected to a data processing center via a monitoring unit.
    Type: Grant
    Filed: July 15, 1977
    Date of Patent: October 10, 1978
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel
    Inventor: Jean-Baptiste Jacob
  • Miller-encoded message decoder
    Patent number: 4112383
    Abstract: A device for decoding a Miller-encoded message in the form of binary data at a clock frequency F. The decoder comprises: a transition detector which provides a very short pulse at each transition in the encoded message; first means controlled by a local clock at frequency F to pass only those short pulses which have the same phase; second means for stretching the short pulses passed by the first means to a duration of (1/2F); a local clock phase lock loop acting on a voltage-controlled oscillator of the local clock and responsive to the output signal of the second means; and a flip-flop to sample the output of the second means under the control of the local clock.
    Type: Grant
    Filed: July 27, 1977
    Date of Patent: September 5, 1978
    Assignee: Societe Anonyme dite: Compagnie Industrielle des Telecommunications Cit-Alcatel
    Inventor: Albert Burgert
  • Digital train processing device
    Patent number: 4107468
    Abstract: PCM telephone transmission apparatus and particularly the use of several ra binary positions in a multiplex frame. These positions are used in one or several units auxiliary to the main unit which processes PCM telephone signals. The auxiliary unit(s) include(s) a signalling time base identical to the signalling time base of the main unit. The counting signals for this auxiliary time base are at a lower rate than the counting signals of the main unit, but they are applied in such a way that a part of the auxiliary time base counts at the same rate as the corresponding part of the time base in the main unit. This structure enables an evolutive use of the extra bits without modification of the main unit.
    Type: Grant
    Filed: October 14, 1976
    Date of Patent: August 15, 1978
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel S.A.
    Inventors: Gilles Gauriat, Jacques Vernezy, Jean-Claude Barigot
  • Work-post console for semi automatic machines
    Patent number: 4101084
    Abstract: Semi automatic machines such as relay coil winders are mounted in cabins arranged in a semi circle around an operator position. Each machine is normally closed inside its cabin during automatic operation, but is caused to leave its cabin and move towards the operator when it needs manual attention. Particularly applicable to noisy machines which need intermittent manual attention since the cabins provide soundproofing during operation.
    Type: Grant
    Filed: May 5, 1977
    Date of Patent: July 18, 1978
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel
    Inventors: Pierre Andre, Robert Caretti, Michel Depoutot, Gerard Mercet
  • Method for measuring the pre-stress in hoop-bound anuluses of rectangular cross-section and made of piezoelectric ceramic material
    Patent number: 4099407
    Abstract: A static stress and a sinusoidal dynamic stress are applied to the internal urface of the anulus. The electric voltage between the internal surface and the external surface of the anulus is measured for each value of the static stress. The static stress at which the sinusoidal voltage is maximum corresponds to the pre-stress due to the binding.
    Type: Grant
    Filed: May 19, 1977
    Date of Patent: July 11, 1978
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel S.A.
    Inventor: Henri Louit
  • Device for numerically generating a wave which is phase modulated and which is free from unwanted modulation products
    Patent number: 4100369
    Abstract: A digital device has an input for receiving successive samples of input d in digital form representative of phase values .zeta.. A sequence of the most recent input samples is stored in an input memory. A carrier phase source provides a signal representative of the phase .theta. of a carrier wave. A function memory stores values of a function k.sub.i .multidot. sin (.zeta..sub.n-i +.theta..sub.n) and is addressed by first selection means which select a group corresponding to a coefficient k.sub.i and second selection means which select a member of the group corresponding to the value of (.zeta. + .theta.). During a calculation period the sum of all values of the function is calculated for i varying between l and a predetermined number r. Each such sum forms a sample of the output wave which is converted to analogue form and filtered to remove unwanted sampling components.
    Type: Grant
    Filed: August 19, 1976
    Date of Patent: July 11, 1978
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel S.A.
    Inventors: Claude Stenstrom, Christian Saint-Supery
  • Process and apparatus for the purification of fumes and gases and for the production of sulfuric acid
    Patent number: 4100259
    Abstract: A process for purifying combustion gases by removing the sulfur dioxide which they contain and for producing sulfuric acid, consisting in rinsing said gases by means of an aqueous solution capable of oxidizing said sulfur dioxide, said rinsing operation being effected in the presence of oxygen, characterized in that said aqueous rinsing solution comprises at least one element capable of combining with said sulfur dioxide to form within the aqueous solution and in the presence of sulfuric acid a sulfur type intermediate coordination complex capable of cooperating with oxygen and said element to produce at least one oxidizing compound (product) capable of oxidizing said sulfur dioxide at a rapid rate.
    Type: Grant
    Filed: October 21, 1976
    Date of Patent: July 11, 1978
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel
    Inventors: Andre Salaun, Rene Trempu
  • Microwave mode transducer
    Patent number: 4099145
    Abstract: The invention relates to a microwave mode transducer for changing between e rectangular TE.sub.10 mode and the semi-circular or circular TE.sub.01 mode. It comprises a microwave mode transducer comprising a semi-circular wave guide and a rectangular wave guide, the wave guides having substantially parallel longitudinal axes and being separated by a web which forms at least a part of the plane wall of the semi-circular guide and one of the smaller side walls of the rectangular guide, the guides being coupled by orifices in the web which orifices are substantially contiguous and are substantially as wide at their maximum width as the wall of the rectangular guide in which they are made.
    Type: Grant
    Filed: September 16, 1976
    Date of Patent: July 4, 1978
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel S.A.
    Inventor: Jean-Pierre Boujet
  • Remote power supply system for a coaxial line with repeaters subjected to the influence of external electric fields
    Patent number: 4099036
    Abstract: A remote power supply system is disclosed which is particularly for monocial transmission lines equipped with repeaters. It comprises at least one current transformer inserted between two sections of line in a local power supply circuit at each repeater. The transformer has two identical primary windings one inserted in a first branch connection connecting the inner conductor of a line section to the outer conductor of the other line section, the other inserted in a second branch circuit connecting the other conductors of the line sections.
    Type: Grant
    Filed: March 4, 1977
    Date of Patent: July 4, 1978
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel S.A.
    Inventor: Rene Migeon
  • Propagation time equalizer for circular wave guides
    Patent number: 4095197
    Abstract: The input wave guides are oriented towards a perpendicular output wave gu with a semi-reflecting quarter-wave plane reflector disposed at 45.degree. to two progressive reflectors which cause increasing delay with frequency and which are disposed in the line of the input and output wave guides.
    Type: Grant
    Filed: February 3, 1977
    Date of Patent: June 13, 1978
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel S.A.
    Inventors: Gerard Le Coz, Jean-Noel Marchalot
  • Digital image memory adapted to distribute image blanks
    Patent number: 4090260
    Abstract: The invention comes within the domain of synthetic images on a cathode scn and concerns a digital memory whose contents are cyclically read to constitute an image on the screen. The memory is divided into blocks each of which contains the data of a part of the image and which are cyclically controlled in such a way that within a line of the image, the blocks are read successively, whereas at the end of a line, a block is skipped. Thus, possible blanks in the image due to the breakdown of one of the blocks are distributed over the image and no longer erase a vertical column of the image.
    Type: Grant
    Filed: June 25, 1976
    Date of Patent: May 16, 1978
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel S.A.
    Inventor: Dusan Sinobad
  • Remote supply system for a cable transmission line with repeaters subjected to the influence of external electric fields
    Patent number: 4088850
    Abstract: The invention relates in particular to remote supply with AC of repeaters a transmission line with symmetrical pairs. It provides a remote supply system in which the AC remote supply passes through a loop formed by two pairs of the line and in which each repeater is supplied by the secondary winding of a current transformer whose primary winding is formed by two identical windings inserted in series opposition, one in one of the pairs forming the remote supply loop, the other in the other of these pairs. It applies advantageously to the transmission lines which have a path common to an electric power line as is the case for example with a transmission line along electrified railway lines.
    Type: Grant
    Filed: March 4, 1977
    Date of Patent: May 9, 1978
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel S.A.
    Inventor: Rene Migeon
  • Connection support for optical fibres
    Patent number: 4079927
    Abstract: The invention relates to optical fibre telecommunication engineering. A connection support for optical fibres has a stand one of whose faces has a grid of parallel rectilinear grooves each arranged for accomodating the ends of two optical fibres placed end to end with a view to connecting them together. The middle part of each groove in which is effected the transition between the fibres being formed by an insert in the stand in the shape of a comb and the stand is divided into two halves along a mid plane perpendicular to the grid of grooves.
    Type: Grant
    Filed: November 9, 1976
    Date of Patent: March 21, 1978
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel S.A.
    Inventor: Lucien Rocton
  • Trunking procedure and arrangement for the connection of functional units
    Patent number: 4076967
    Abstract: The invention concerns the connection of functional units. A trunking arrement is disclosed which permits the linking of minority units of the same type in several blocks of units, to other units allocated to that type and grouped in a single block of units. The minority connections from minority units of distinct types, are grouped into relaying links and relayed by said links to a wiring structure, which reassembles the connections pertaining to units of one and the same type in regrouping links. Application of the invention is in the field of telecommunications.
    Type: Grant
    Filed: December 6, 1976
    Date of Patent: February 28, 1978
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel S. A.
    Inventor: Philippe Cailloux
  • Acoustic buoy
    Patent number: 4065821
    Abstract: An acoustic buoy which can be dropped from a plane, comprising a float connected to a plunger by a locking system. The shock of a parachute opening primes this locking system which is unlocked when the force applied to the system by the weight of the plunger decreases on the plunger being submerged. The system is unlocked even if the path of the buoy's fall is very oblique.
    Type: Grant
    Filed: April 29, 1977
    Date of Patent: January 3, 1978
    Assignee: Compagnie Industrielle des Telecommunications Cit-Alcatel
    Inventor: Guy Lepreux