5.
    发明专利
    未知

    公开(公告)号:FR1526799A

    公开(公告)日:1968-05-31

    申请号:FR06007571

    申请日:1965-04-02

    Applicant: IBM FRANCE

    Inventor: CROISIER ALAIN

    MULTIPOINT CONNECTION SYSTEM FOR SUBSCRIBER STATIONS

    公开(公告)号:DE3275693D1

    公开(公告)日:1987-04-16

    申请号:DE3275693

    申请日:1982-12-28

    Applicant: IBM IBM FRANCE

    Inventor: CROISIER ALAIN

    Abstract: A multipoint connection system adapted to operate in the time-division multiplex mode. The system includes an output link (21), connected to the output of a control station (10) and to the input of each of the work stations (WS-1, WS-2), and a U-shaped input link (22) one leg of which has its end connected to the input of the control station and the other leg (22-2) of which is terminated by an impedance (Z2) and is connected to the output of each work station. The signals on the output link and on leg (22-2) travel in the same direction, thereby eliminating the need to provide adjustable means of determining the transmission times specific to each work station.

    8.
    发明专利
    未知

    公开(公告)号:FR2389277A1

    公开(公告)日:1978-11-24

    申请号:FR7713995

    申请日:1977-04-29

    Applicant: IBM FRANCE

    Abstract: A coding process, given a total number of available bits per unit time, allocates to each of a plurality of signal channels a number of bits proportional to information in the channel. The process is useful for transcoding BCPCM (Block Coded PCM) voice signals for lower bit rate and conserving transmission channel bandwidth.

    9.
    发明专利
    未知

    公开(公告)号:FR2330117A1

    公开(公告)日:1977-05-27

    申请号:FR7533884

    申请日:1975-10-31

    Applicant: IBM FRANCE

    Abstract: Arrangement allowing an input bucket brigade (BBD) stage to feed several other BBD stages in parallel with no loss of the signal transferred from the input stage to the subsequent ones. An input voltage corresponding to a charge quantity is stored in the second capacitor of the input BBD stage. The drain of the output transistor of the input stage is connected to a first BBD stage wherein the first capacitor is connected to the source electrode of the first transistor of a second BBD stage. The first transistors of both stages are controlled by the same clock pulses. When these transistors are turned on, the capacitors connected thereto are in series with the second capacitor of the input stage. Consequently, the same current will flow through these capacitors, which will thus store the same charges so that the charge representing the input voltage will be reproduced in the first capacitors of the two BBD stages connected to the input stage. Means are provided for grounding the terminal of the first capacitor in the first stage that is connected to the source of the first transistor in the second stage at the time the transfer of the duplicated charge takes place.

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