Digital system forming a frequency multiplex system
    1.
    发明授权
    Digital system forming a frequency multiplex system 失效
    形成频率复用系统的数字系统

    公开(公告)号:US3875340A

    公开(公告)日:1975-04-01

    申请号:US37616973

    申请日:1973-07-03

    Applicant: CIT ALCATEL

    CPC classification number: H04J1/04 H04J1/05

    Abstract: Digital system which, from n voice frequency channels, furnishes a band of a frequency multiplex system, for example, a primary base group of twelve channels of 4 kHz each, covering the band 60 - 108 kHz, and comprises between an analog-digital input converter receiving the voice frequency channels and a digitalanalog output converter emitting the desired band, only members of the digital type operating on digital information or data ''''words.

    Abstract translation: 数字系统,其从n个语音频道通道提供频率复用系统的频带,例如,每个具有4kHz的12个信道的主基组,覆盖频带60-108kHz,并且包括在模拟数字输入 接收语音频道的转换器和发射所需频带的数字模拟输出转换器,只有在数字信息或数据“字上操作的数字类型的成员。

    3.
    发明专利
    未知

    公开(公告)号:FR2276744A1

    公开(公告)日:1976-01-23

    申请号:FR7422737

    申请日:1974-06-28

    Applicant: CIT ALCATEL

    Abstract: The invention concerns regenerative repeaters for pulses. The method consists of detecting errors, coding them and recording them in a channel of a tele-locating frame. Each regenerative repeater of a connection has a channel which is attributed to it, for example channel i, for the repeater whose order is i. The device implementing the method comprises means for directing the tele-locating signals at the input of the repeater, memorizing them and applying them to a low-frequency modulator which reinjects them into a directing means at the output of the repeater; it comprises also means for detecting the channel whose order is i and recording therein the coded proportion of error of the repeater.

    Fault location device for digital repeater regenerators - uses shift register with series and parallel inputs and outputs, multiplexer and modulator

    公开(公告)号:FR2440661A2

    公开(公告)日:1980-05-30

    申请号:FR7831028

    申请日:1978-11-02

    Applicant: CIT ALCATEL

    Abstract: A pulse repeater regenerator has a paralleled telesurveillance and telelocalisation device which receives a service signal added to the line digital signal, the service signal being a binary signal modulating a low frequency carrier, and recovers the binary signal in a detector (21). A shift register (23) applied the signals to a binary comparator (24) which detects locking words. A multiplexer (44) combines information from the comparator (24) and an error rate circuit in the regenerator and applies the result to parallel inputs of a second shift register (40) whose series inputs are connected through a gate (41) to the first shift register (23) and a time base (200). The second shift register (40) parallel outputs are connected to a line clear decoder (43) and series output to a modulator (45) which modulates the signal with the original carrier from the time base and connects with the transmission line. The gate (41) is opened by the comparator (24) and closed by the line clear decoder (43) which also enables the parallel inputs of the second shift register (40).

    6.
    发明专利
    未知

    公开(公告)号:DE2527593A1

    公开(公告)日:1976-01-15

    申请号:DE2527593

    申请日:1975-06-20

    Applicant: CIT ALCATEL

    Abstract: The invention concerns regenerative repeaters for pulses. The method consists of detecting errors, coding them and recording them in a channel of a tele-locating frame. Each regenerative repeater of a connection has a channel which is attributed to it, for example channel i, for the repeater whose order is i. The device implementing the method comprises means for directing the tele-locating signals at the input of the repeater, memorizing them and applying them to a low-frequency modulator which reinjects them into a directing means at the output of the repeater; it comprises also means for detecting the channel whose order is i and recording therein the coded proportion of error of the repeater.

    PROCEDE ET DISPOSITIF DE TELESURVEILLANCE ET TELELOCALISATION DE REPETEURS-REGENERATEURS PULSIONS

    公开(公告)号:CA1044828A

    公开(公告)日:1978-12-19

    申请号:CA230386

    申请日:1975-06-27

    Applicant: CIT ALCATEL

    Abstract: L'invention concerne les répéteure-régénérateur d'impulsions. Le procédé consiste à détecter les erreurs, à les coder et à les inscrire dans une voie d'une trans de télélocalisation, chaque répéteur d'une liaison ayant une voie qui lui est attribuée par exemple voie 1 pour le répéteur de rang i. Le dispositif les signaux de télélocalisation à l'entrée du répéteur, les mettre en mémoire et les appliquer à un modulateur basée fréquence qui les réinjecte sur un moyen d'aiguillage en sortie du répéteur; il comprend également des moyens pour détecter la voie de rang i et y inscrire le taux d'erreur codé du répéteur.

    8.
    发明专利
    未知

    公开(公告)号:DE2333870A1

    公开(公告)日:1974-01-17

    申请号:DE2333870

    申请日:1973-07-03

    Applicant: CIT ALCATEL

    Abstract: Digital system which, from n voice frequency channels, furnishes a band of a frequency multiplex system, for example, a primary base group of twelve channels of 4 kHz each, covering the band 60 - 108 kHz, and comprises between an analog-digital input converter receiving the voice frequency channels and a digital-analog output converter emitting the desired band, only members of the digital type operating on digital information or data "words.

    REPEATER MONITORING DEVICE
    9.
    发明专利

    公开(公告)号:GB1270737A

    公开(公告)日:1972-04-12

    申请号:GB3801470

    申请日:1970-08-06

    Applicant: CIT ALCATEL

    Inventor: DESOMBRE PATRICE

    Abstract: 1,270,737. Supervising repeaters. C.I.T.- COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS. 6 Aug., 1970, No. 38014/70. Heading H4R. In a transmission system comprising a transmission cable incorporating a number of parallel four wire lines and repeater units at spaced intervals along the cable, each repeater unit including a repeater for each line, and each repeater including go and return portions and means to interconnect these portions to loop the line for monitoring purposes, a repeater to be so looped is selected by co-ordinate selection techniques using a signal over an auxiliary conductor pair for unit selection and a signal over the appropriate line to select the individual repeater at that unit. The figure shows a single repeater 11 connected to a line 1, the signalling conductors PR and QY, a repeater unit selector WA and a repeater selector T. The repeater unit selects are each as shown in the broken line rectangle and include a relay 19 with contacts r and s normally in the position shown and a polarized relay 20 which depending on the polarity applied between conductors sets its contacts t and u in one or other of their changeover positions and leaves them in this state when de-energized. The contact positions shown correspond to a path looped condition in which positive potential has just been applied on conductor PR and negative potential on conductor QY. Relays 19 and 20 operate in turn changing over the state of all contacts to obtain a stable state with relays 19 and 20 enabled over a path including contacts r and t. While relay 19 is enabled a set of contacts a 1 to a 4 individually associated with the repeaters of that unit are closed. In the repeater selector T individual to the selected repeater a detector 15 responds to interrupton of a selection signal received over its repeater and via an inverter 16 enables a relay 17. A relay 18 associated with the selected repeater is enabled over contacts p and a 1 , a 2 , a 3 or a 4 and closes contacts a 1 to loop the two halves 11a and 11b of the repeater 11 via a loop length simulator 10. Relay 18 also closes self holding contacts 9. To break the loop the polarity of the lines PR and QY is reversed. Maintaining the original polarity but interrupting it releases relay 19 after relays 19 and 20 have operated establishing a direct path between P and R via contacts r and t, the loop between P and Q being broken. Thus the next repeater unit selector is now in a position to respond. Thus by a number of interruptions of the polarity followed by a double reverse of the polarity selects a particular unit selector. The relays 17 and 18 may be replaced by electronic equivalents.

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