中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

14 records (took 0.024 seconds)

    Data communication system of loop configuration and serial transmission of time slots
    1.
    发明授权
    Data communication system of loop configuration and serial transmission of time slots 失效
    循环配置数据通信系统及时间序列传输

    公开(公告)号：US3639904A

    公开(公告)日：1972-02-01

    申请号：US3639904D

    申请日：1970-05-05

    Applicant: IBM

    Inventor： ARULPRAGASAM JEGANANDARAJ A

    IPC: H04L12/423 ,  H04Q9/00

    CPC classification number: H04L12/423

    Abstract: In a data communication system a plurality of remote stations and a central station are arranged in a series loop. The central station transmits a succession of time slots to the loop and information is transferred between the central station and the remote stations with character interleaving under control of the central station. Each remote station includes one or more terminals. A terminal wishing to transmit a message sends a request-for-service signal to the central station in the first free time slot received by its remote station. The terminal cannot transmit a message or a further request-for-service signal until it receives a proceed signal from the central station. After receiving a proceed signal the terminal can transmit a message. At the end of the message the terminal is again locked out (i.e. it cannot transmit message data) but remains free to transmit a request-for-service signal by which means it may again obtain a line position.

    Abstract translation: 在数据通信系统中，多个远程站和中心站以串联方式布置。 中心站向环路发送一连串的时隙，并在中央台的控制下通过字符交错在中心站和远程站之间传送信息。 每个远程站包括一个或多个终端。 希望发送消息的终端在由其远程站接收的第一空闲时隙中向中心站发送请求服务信号。 终端不能发送消息或进一步的请求服务信号，直到其从中心站接收到进行信号为止。 在接收到继续信号后，终端可以发送消息。 在消息结束时，终端再次被锁定（即它不能发送消息数据），但是仍然可以发送请求服务信号，通过该信号，其可以再次获得线路位置。

    Configuration control of data processing system units
    2.
    发明授权
    Configuration control of data processing system units 失效
    数据处理系统单元的配置控制

    公开(公告)号：US3680052A

    公开(公告)日：1972-07-25

    申请号：US3680052D

    申请日：1970-02-20

    Applicant: IBM

    Inventor： ARULPRAGASAM JEGANANDARAJ A ,  BINKS DENNIS C ,  HOLMES JOHN J ,  MINSHULL JOHN F ,  PINNELL MARTIN C ,  WILLIAMS CLIVE

    IPC: G06F11/20 ,  G06F15/177 ,  G06F15/16

    CPC classification number: G06F11/2028 ,  G06F11/2033 ,  G06F11/2035 ,  G06F11/2046 ,  G06F15/177

    Abstract: The disclosed data processing system, which includes plural processing units, plural storage units and plural input/output units, can be configured into various groups of interconnected units. In response to a single pattern of signals broadcast to configuration control registers in each unit, a particular unit can be disconnected from one group of units and connected to another group. This invention relates to a data processing system, and more particularly to a system including plural units which, in response to a single program instruction, can be configured into various interconnected groups of units.

    Abstract translation: 所公开的包括多个处理单元，多个存储单元和多个输入/输出单元的数据处理系统可以被配置成各种互连单元组。 响应于广播到每个单元中的配置控制寄存器的单个信号模式，特定单元可以从一组单元断开并连接到另一组。 本发明涉及一种数据处理系统，更具体地涉及一种包括多个单元的系统，其响应于单个程序指令可被配置成各种相互连接的单元组。

    DATA COMMUNICATION SYSTEM
    8.
    发明专利
    DATA COMMUNICATION SYSTEM 未知

    公开(公告)号：GB1283445A

    公开(公告)日：1972-07-26

    申请号：GB5315470

    申请日：1970-11-09

    Applicant: IBM

    Inventor： ARULPRAGASAM JEGANANDARAJ A

    IPC: H04L12/423

    Abstract: 1283445 Data transmission systems INTERNATIONAL BUSINESS MACHINES CORP 9 Nov 1970 [10 Nov 1969] 53154/70 Heading H4P In a data processing system a number of remote stations, each having one or more terminal units, such as input/output typewriters, are connected in a loop with a central station which gathers messages from the terminal units for transmission to a central computer or distributers messages from the central computer. Communication between the remote stations and the central station is by multi-bit words which circulate round the loop. Each station receives each word in turn, interogates it to see for example if the word is free or is addressed to that station, is able to modify it and pass it on to the next station. Each input/output terminal has an operators calling key which causes the associated remote station to seize the next multi-bit word marked free, and to insert a calling signal character and the address of the calling terminal. A mechanical key-loose lock prevents the keying-in of data until a proceed to send signal has been received from the central station in the same multi-bit word. Transmission of a message proceeds using the word and at the end the central station sends an end of message signal to free the remote station, reset the lock, and also frees the multi-bit word. The central station can only accommodate a limited number of transmitting terminals and after that a calling terminal is queued and a free multi-bit word allocated on a priority basis. In addition to the free/busy bit, the multi-bit words contain an acknowledge and sequence bit, a bit indicating whether message transmission is to or from the central station and a parity bit.

Patent Agency Ranking