Patents Assigned to La Telephonie Industrielle et Commerciale Telic Alcatel
  • Patent number: 4831488
    Abstract: A charge-removing device intended to eliminate electrostatic charge from a thin dielectric strip, and in particular a rolled dielectric film. The device comprises at least two electrically conductive rolls (4,5) forming electrodes which are subjected to a potential difference by a low frequency high tension source. These rolls are parallel and come into transverse contact at the same time with respective faces of a thin strip dielectric (1) passing therebetween. The invention is applicable, in particular, to electrostatic type printers.
    Type: Grant
    Filed: March 3, 1987
    Date of Patent: May 16, 1989
    Assignee: La Telephonie Industrielle et Commerciale Telic Alcatel
    Inventor: Patrice Playe
  • Patent number: 4774704
    Abstract: The invention relates to an interface circuit for connecting a digital equipment (2) for sending and receiving data to a time multiplex link (3). The connection interface circuit is provided with a bit send terminal (3E1) and a bit receive terminal (3R1) for connection to the corresponding wires (3E, 3R) of a time multiplex link (3) in parallel with other interface circuits (1 or 8) of equipments for transmitting and receiving digital data (2) or speech signals (4). The interface circuit includes a synchronization arrangement (12) enabling it to be connected to the multiplex link (3) in a manner identical to that provided for the interface circuit (8) of the transmitter/receiver equipments for speech signals (4) and to adapt itself automatically to the bit rate capabilities offered by the multiplex link.
    Type: Grant
    Filed: July 15, 1986
    Date of Patent: September 27, 1988
    Assignee: La Telephonie Industrielle et Commerciale Telic Alcatel
    Inventors: Raymond Gass, Andre Ruhlmann
  • Patent number: 4727386
    Abstract: An electrostatic print head for creating a latent image on a dielectric recording medium (1) in order to enable said image to be subsequently transferred to a final medium (generally ordinary paper) after development by inking. The print head comprises a conventional multitude of electrodes (E) and associated conterelectrodes (CE) disposed in parallel rows for progressively building up an electrostatic latent image on the moving dielectric medium (1), and includes an additional rotary coupling electrode (EC) which is raised to a direct potential whose average voltage is of the same polarity as the high voltage control pulses applied to the counterelectrodes, which pulses are themselves of opposite polarity to the pulses applied to said electrodes. The coupling electrodes (EC) is pressed against the recording dielectric medium level with the electrodes and the counterelectrodes, and against the opposite side of the medium relative to said electrodes and counterelectrodes.
    Type: Grant
    Filed: October 28, 1986
    Date of Patent: February 23, 1988
    Assignee: La Telephonie Industrielle et Commerciale Telic Alcatel
    Inventor: Patrice Playe
  • Patent number: 4723137
    Abstract: An electrostatic printer uses a dielectric film (10) as an intermediate recording medium for an electrostatic latent image which is to be printed on a final recording medium (1) such as sheets of paper. The latent image is first developed by inking, and the inked image is then fixed on the final medium by pressure using a transfer unit having pressure rolls (11A, 11B) between which the intermediate medium and the final medium are passed while pressed against each other. Two portions of the same dielectric film are pressed against opposite faces of the final medium as it passes between the pressure rolls of the transfer unit with each portion being suitable for receiving an electrostatic latent image from a corresponding write head (8) with images being inked by corresponding inking devices (9), and with each inking device being associated with a corresponding different one of the rolls of the transfer unit.
    Type: Grant
    Filed: October 28, 1986
    Date of Patent: February 2, 1988
    Assignee: La Telephonie Industrielle et Commerciale Telic Alcatel
    Inventor: Patrice Playe
  • Patent number: 4689643
    Abstract: The invention relates to electrostatic print heads enabling an electrostatic latent image to be progressively built up on a moving medium (18) which may be constituted by special paper or by some other material, by discharging ions using a set of aligned electrodes (20) and a counterelectrode (1) disposed opposite said electrodes on the other side of the moving medium (18). The counterelectrode (1) is constituted by a cylindrical or semi-cylindrical resistive layer (7) covering connection conductors (C.sub.1 to C.sub.n+1) which are constituted by parallel rings or ring sectors sharing a common axis with the resistive layer and having cylindrical or semi-cylindrical resistive portions extending therebetween. The rings or ring sectors are individually connected to outlets from an electronic selective switching circuit (CEC) which is at least partially housed within the concave portion of said counterelectrode (1).
    Type: Grant
    Filed: October 28, 1986
    Date of Patent: August 25, 1987
    Assignee: La Telephonie Industrielle et Commerciale Telic Alcatel
    Inventor: Patrice Playe
  • Patent number: 4506112
    Abstract: Telephone sets associated with terminal units such as modems or telecopiers generally need to be used without the handset being lifted off the gravity switch. Such telephone sets also tend to include electronic circuitry which is powered by DC derived from the telephone line via a diode bridge (11) to protect against reversals of line polarity. The line is initially looped by a user-operated switch (T) having contacts (t1) connected in parallel with the gravity switch looping contacts (cc1), and thus on the line or AC side of the bridge (11). Once adequate power is supplied to a controlling microprocessor (5), it causes a relay (RE) to close line-holding contacts (re1) in parallel with the looping contacts already mentioned (t1, cc1). The loop is released by means of a release transistor (15) connected in a common return wire on the DC side of the bridge (11).
    Type: Grant
    Filed: April 8, 1983
    Date of Patent: March 19, 1985
    Assignee: La Telephonie Industrielle et Commerciale Telic Alcatel
    Inventor: Philippe Bitsch
  • Patent number: 4486879
    Abstract: A plurality of PCM signal samples destined for the same telephone set are transmitted over different respective time slots of a time divided transmission link serving the telephone set. Each sample destined for the telephone set is decoded during a single time slot, the resulting decoded pulses are added together once per frame, and the sum transmitted to the telephone set for a period which is equal to the duration of one frame. The summing unit is coupled firstly to the output of a digital-to-analog converter and secondly to the input of a hold circuit. Its main components are an operational amplifier and capacitors which are suitably connected by transistors.
    Type: Grant
    Filed: January 18, 1982
    Date of Patent: December 4, 1984
    Assignee: La Telephonie Industrielle et Commerciale Telic Alcatel
    Inventor: Rainier Baltz
  • Patent number: 4480198
    Abstract: A device for increasing the operational security of a duplicated clock which comprises first and second clocks comprises in each clock a selector circuit with inputs connected to a filter and signal shaping circuit of each clock. Each selector circuit comprises two processing circuits and an output circuit which implements the following logic equation:w=(q1+q2).multidot. w1+(q 1+ q2).multidot.w2in which:w is a clock signal from the selector circuit,w1 and w2 are the reconstituted clock signals produced by the first and second clocks, respectively.q1 and q1 are the direct and complemented output signals of the bistable of the first processing circuit, andq2 and q2 are the direct and complemented output signals of the bistable of the second processing circuit.
    Type: Grant
    Filed: May 20, 1982
    Date of Patent: October 30, 1984
    Assignee: La Telephonie Industrielle et Commerciale Telic Alcatel
    Inventor: Raymond Gass
  • Patent number: D275856
    Type: Grant
    Filed: February 2, 1982
    Date of Patent: October 9, 1984
    Assignee: La Telephonie Industrielle et Commerciale Telic Alcatel
    Inventor: Michel Moraine
  • Patent number: D275857
    Type: Grant
    Filed: February 2, 1982
    Date of Patent: October 9, 1984
    Assignee: La Telephonie Industrielle et Commerciale Telic Alcatel
    Inventor: Michel Moraine
  • Patent number: D275955
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: October 16, 1984
    Assignee: La Telephonie Industrielle et Commerciale Telic Alcatel
    Inventor: Michel Moraine