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    High-speed pcm data-transmission system
    1.
    发明授权
    High-speed pcm data-transmission system 失效
    高速PCM数据传输系统

    公开(公告)号：US3902165A

    公开(公告)日：1975-08-26

    申请号：US46528274

    申请日：1974-04-29

    Applicant: CSELT CENTRO STUDI LAB TELECOM

    Inventor： ARTOM AURO

    IPC: H04L12/52 ,  H04J3/12

    CPC classification number: H04L12/52

    Abstract: Several subscriber stations equipped with data terminals, adapted to send out and receive code words at different but harmonically interrelated rates, selectively communicate with one another via at least one central office and assigned PCM channels, each station being linked with its central office through a two-way analog-type signal path which includes an incoming and an outgoing branch terminating in respective baseband modems at the subscriber end and at the central-office end. A memory at the central office stores information relating to the transmission rates and line characteristics of the several signal paths served thereby. Three quarters of each code word are reserved for message bits, the fourth quarter being allocated to service bits. A subscriber wishing to establish a connection transmits, via the associated outgoing branch, to the central office a service code identifying that subscriber; the central office thereupon emits a pair of command signals, based upon the received code and the stored information, to select a matching filter circuit in a compatible equalizer section for insertion in series with that outgoing branch. A confirmation signal from the central office sets a clock circuit at the calling subscriber station to a selected operating speed, less than the fixed transmission rate of that station, preparatorily to the dialing of the number of the called subscriber; upon the establishment of a data link via the central office to the called station, the corresonding clock circuit thereof is synchronized with that of the calling station by a similar code.

    High-speed printing system with continuously rotating font wheel
    2.
    发明授权
    High-speed printing system with continuously rotating font wheel 失效
    高速打印系统具有连续旋转的前轮

    公开(公告)号：US3593658A

    公开(公告)日：1971-07-20

    申请号：US3593658D

    申请日：1969-07-01

    Applicant: CSELT CENTRO STUDI LAB TELECOM

    Inventor： ARTOM AURO

    IPC: H04L17/30 ,  B41J5/46

    CPC classification number: H04L17/30

    Abstract: A teleprinter responsive to binary code combinations includes a continuously rotating font wheel with 51 peripherally equispaced typefaces and, synchronized with it, a reference wheel with 51 peripherally spaced alphanumerical markings respectively assigned to these typefaces and with 9 nonalphanumerical markings interspersed with the former. A sensor generates counting pulses in response to successive markings and steps a binary counter whose setting is fed to a comparator also receiving code combinations or ''''words'''' stored in a register in response to incoming message signals. Upon detecting a match, the comparator trips a striker successively confronted by the typefaces of the font wheel, operation of this striker being inhibited during periods in which counting pulses are generated by nonalphanumerical markings.

    Switching system for PCM communication with alternate voice and data transmission
    3.
    发明授权
    Switching system for PCM communication with alternate voice and data transmission 失效
    用于PCM通信的交换系统，具有备用语音和数据传输

    公开(公告)号：US3922497A

    公开(公告)日：1975-11-25

    申请号：US45354674

    申请日：1974-03-21

    Applicant: CSELT CENTRO STUDI LAB TELECOM

    Inventor： ARTOM AURO ,  DEMICHELIS CARLO

    IPC: H04M11/06 ,  H04Q11/04 ,  H04J3/00

    CPC classification number: H04Q11/04 ,  H04M11/06

    Abstract: To enable selective voice communication and data transmission between calling and called subscribers of a PCM telephone network served by a central office, the latter includes a processor which intervenes during data transmission but is bypassed during voice communication while preserving the information required for instantaneous resumption of data transmission. The processor includes two buffer registers MCD1, MCD2 for incoming and outgoing message signals and two service registers MS1, MS2 for ancillary information, each register having a multiplicity of stages which are allocated to respective channels of a PCM frame and are scanned simultaneously with corresponding stages of the other registers. Calling and called subscribers are assigned separate line links giving access to respective channels via corresponding register stages, with transfer of message signals from a stage of register MCD1 (temporarily assigned to one subscriber) to a stage of register MCD2 (temporarily assigned to the other subscriber) under the control of a programmer during data transmission. This transfer is discontinued during voice communication while the contents of the associated stages of the service registers MS1, MS2 remain intact.

    Abstract translation: 为了实现由中央局服务的PCM电话网络的呼叫和被叫用户之间的选择性语音通信和数据传输，后者包括在数据传输期间干预但在语音通信期间被旁路的处理器，同时保留瞬时恢复数据所需的信息 传输。 该处理器包括两个用于输入和输出消息信号的缓冲寄存器MCD1，MCD2和用于辅助信息的两个服务寄存器MS1，MS2，每个寄存器具有分配给PCM帧的相应通道的多个级并且与相应级同时扫描 的其他寄存器。 呼叫和被叫用户被分配单独的线路链路，通过相应的寄存器阶段访问相应的信道，并将消息信号从寄存器MCD1（临时分配给一个用户）的级传送到寄存器MCD2的级（暂时分配给另一个用户 ）在数据传输期间由程序员控制。 在语音通信期间中止该传输，而服务寄存器MS1，MS2的相关级的内容保持不变。

    5.
    发明专利
    未知

    公开(公告)号：MX148030A

    公开(公告)日：1983-03-02

    申请号：MX18412280

    申请日：1980-09-29

    Applicant: CSELT CENTRO STUDI LAB TELECOM

    Inventor： ARTOM AURO

    IPC: H04M3/00 ,  H04M11/06 ,  H04M11/00 ,  H04M11/08 ,  H04N7/14 ,  H04M7/14

    Abstract: System for the exchange and broadcast of information by means of subscribers' telephone network, in which on the subscriber's line (L), independently of and contemporaneously with the usual telephone exchange, either data exchange from and to a data network (RD) or broadcast of information coming from a data base (BD) are effected.

    7.
    发明专利
    未知

    公开(公告)号：IT7969232D0

    公开(公告)日：1979-11-19

    申请号：IT6923279

    申请日：1979-11-19

    Applicant: CSELT CENTRO STUDI LAB TELECOM

    Inventor： ARTOM AURO

    IPC: H04M3/00 ,  H04M11/00 ,  H04M11/06 ,  H04M11/08 ,  H04N7/14 ,  H04M

    Abstract: System for the exchange and broadcast of information by means of subscribers' telephone network, in which on the subscriber's line (L), independently of and contemporaneously with the usual telephone exchange, either data exchange from and to a data network (RD) or broadcast of information coming from a data base (BD) are effected.

    10.
    发明专利
    未知

    公开(公告)号：IT1119498B

    公开(公告)日：1986-03-10

    申请号：IT6923279

    申请日：1979-11-19

    Applicant: CSELT CENTRO STUDI LAB TELECOM

    Inventor： ARTOM AURO

    IPC: H04M3/00 ,  H04M11/00 ,  H04M11/06 ,  H04M11/08 ,  H04N7/14 ,  H04M

    Abstract: System for the exchange and broadcast of information by means of subscribers' telephone network, in which on the subscriber's line (L), independently of and contemporaneously with the usual telephone exchange, either data exchange from and to a data network (RD) or broadcast of information coming from a data base (BD) are effected.

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