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    Device for multiplexing and demultiplexing video channels.
    21.
    发明专利
    Device for multiplexing and demultiplexing video channels. 未知

    公开(公告)号：FR2530394A1

    公开(公告)日：1984-01-20

    申请号：FR8212289

    申请日：1982-07-13

    Applicant: THOMSON CSF

    Inventor： PARQUIER GUY LE

    IPC: H04N7/10 ,  H04J1/00 ,  H04Q11/02

    Abstract: The invention relates to a device making it possible to produce, in particular, television broadcasting networks. In this case it comprises devices 30 enabling each video source to be coupled to a single coaxial cable 31 conveying video signals to a plurality of conventional television receivers 19. Each device 30 comprises a frequency changer 21 connected to an oscillator 28 of frequency 200 MHz, a bandpass filter 22 of central frequency 203 MHz and of passband 6 MHz, a frequency changer 23 connected to an oscillator 29 supplying a signal of frequency 1860 MHz, a bandpass filter 24 of central frequency 2063 MHz which rejects the image frequencies whose value is about 1600 MHz, a frequency changer 25 connected to an oscillator 27 supplying a signal of frequency f3 which is distinct for each video channel and lies in the range 1100 to 1500 MHz, a low-pass filter 26 allowing through all frequencies below 1000 MHz. The demultiplexing of the video signals is carried out by each of the television receivers 19, each video channel being selected by adjusting the tuning frequency of a television receiver 19. Application to television broadcasting, to the switching of video signals in television production studios and to the switching of videophone channels.

    22.
    发明专利
    未知

    公开(公告)号：FR2508659A1

    公开(公告)日：1982-12-31

    申请号：FR8112614

    申请日：1981-06-26

    Applicant: THOMSON CSF

    Inventor： PARQUIER GUY LE ,  PUECH CLAUDE

    IPC: G02F7/00 ,  H04B9/00

    Abstract: The invention relates to an analog-digital coder incorporating n channels corresponding to the bits of the output word. Each channel comprises at least one light intensity modulator. As a function of the positive or negative half-cycles of the output signal of channel i+1, a supplementary phase shift of + DELTA PHI or - DELTA PHI is introduced onto the output signal of channel i, with / DELTA PHI /

    Movement compensation method for a sonar antenna
    27.
    发明专利
    Movement compensation method for a sonar antenna 未知

    公开(公告)号：AU658622B2

    公开(公告)日：1995-04-27

    申请号：AU1648192

    申请日：1992-03-27

    Applicant: THOMSON CSF

    Inventor： DOISY YVES ,  BAUDOUX JEAN-PIERRE ,  PARQUIER GUY LE

    IPC: G01S7/52 ,  G01S15/50 ,  G01V1/38

    Abstract: PCT No. PCT/FR92/00279 Sec. 371 Date May 18, 1994 Sec. 102(e) Date May 18, 1994 PCT Filed Mar. 27, 1992 PCT Pub. No. WO92/18878 PCT Pub. Date Oct. 29, 1992.The invention relates to towed sonars. It consists in compensating electronically for the movement of the antenna in order to suppress the Doppler shift of the fixed echoes. In order to do that in a towed linear antenna (203) comprising N sensors (205), M (M

    30.
    发明专利
    未知

    公开(公告)号：FR2603974A1

    公开(公告)日：1988-03-18

    申请号：FR8612816

    申请日：1986-09-12

    Applicant: THOMSON CSF

    Inventor： PARQUIER GUY LE ,  PASTRE JEAN-LUC

    IPC: F41G3/22 ,  F16M13/00 ,  B64D43/00

    Abstract: The optical and electronic equipment normally carried by an aircraft pilot's helmet is carried by a support element which is placed at a distance from the helmet and accordingly relieves the load on the pilot's head. The support element is maintained in a predetermined position location with respect to the helmet by means of a detection assembly, a computer for determining errors in positioning, a control circuit which generates signals corresponding to these errors, and a set of jacks controlled by the error signals for modifying the position of the support element with respect to the aircraft structure and cancelling the positioning errors.

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