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    Process for directly generating a data representing signal having its main components in one frequency octave
    1.
    发明授权
    Process for directly generating a data representing signal having its main components in one frequency octave 失效
    在一个频率范围内直接生成其主要组件的数据表示信号的过程

    公开(公告)号：US3619502A

    公开(公告)日：1971-11-09

    申请号：US3619502D

    申请日：1969-09-03

    Applicant: IBM

    Inventor： CROISIER ALAIN ,  NUSSBAUMER HENRI JEAN

    IPC: H04M11/06 ,  H04L25/48 ,  H04L25/497 ,  H04M11/00 ,  H04L27/24

    CPC classification number: H04L25/497

    Abstract: A method for directly generating a data representing signal corresponding to a single sideband of a data modulated carrier signal and suitable for transmission over a limited frequency network. The signal comprises the summation of a number of bit representing pulse sequences, each sequence including a central bit indicating pulse and both preceding and following echo pulses. The pulses are generated by digital techniques and their spacing and amplitude are so selected that after passing through a low-pass filter, the resultant signal has no frequency components outside of a predetermined frequency band.

    MULTIPOINT CONNECTION SYSTEM FOR SUBSCRIBER STATIONS
    3.
    发明专利
    MULTIPOINT CONNECTION SYSTEM FOR SUBSCRIBER STATIONS 未知

    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

    IPC: H04M11/06 ,  H04L12/40 ,  H04L12/43 ,  H04Q11/04 ,  H04L11/16

    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.

    MULTIPOINT SYSTEM FOR INTERCONNECTING WORK STATIONS
    9.
    发明专利
    MULTIPOINT SYSTEM FOR INTERCONNECTING WORK STATIONS 未知

    公开(公告)号：CA1200867A

    公开(公告)日：1986-02-18

    申请号：CA440693

    申请日：1983-11-08

    Applicant: IBM

    Inventor： CROISIER ALAIN

    IPC: H04M11/06 ,  H04L12/40 ,  H04L12/43 ,  H04Q11/04 ,  H04L11/16

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

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