公开(公告)号：US3904829A

公开(公告)日：1975-09-09

申请号：US50667374

申请日：1974-09-16

Applicant: CONTROL DATA CORP

Inventor： MARTIN ROBERT F ,  MACDONALD ROBERT D ,  WILLIAMS C ALAN

IPC: H04L12/423 ,  H04M9/02 ,  H04J3/08

CPC classification number: H04M9/025 ,  H04L12/423

Abstract: A demand driven multiplexing system is provided having first and second closed-loop communications links, each connected to a central control station and to a plurality of serially-arranged remote stations. The central station includes means adapted to issue an end-of-batch code on one link and each remote station includes means responsive to the end-of-batch code to remove the same from any data train on the link and insert a message thereon, followed by the end-of-batch code. The central station also issues data trains on the other link, each data group having an address code. Each remote station is responsive to the address code to copy the particular data group from the link.

Abstract translation: 提供具有第一和第二闭环通信链路的需求驱动复用系统，每个连接到中央控制站和多个串行排列的远程站。 中心站包括适于在一个链路上发出批次结束代码的装置，并且每个远程站包括响应于批次结束代码以从链路上的任何数据列移除相同的装置并在其上插入消息的装置， 之后是批次结束代码。 中心站还在另一个链路上发布数据列，每个数据组都有一个地址码。 每个远程站响应于地址代码从该链接复制特定的数据组。

公开(公告)号：US3623014A

公开(公告)日：1971-11-23

申请号：US3623014D

申请日：1969-08-25

Applicant: CONTROL DATA CORP

Inventor： DOELZ MELVIN L ,  MARTIN ROBERT F ,  MORIOKA FRED K

IPC: G06F11/00 ,  G06F15/167 ,  G06F15/16

CPC classification number: G06F11/2035 ,  G06F11/076 ,  G06F11/2087 ,  G06F11/2094 ,  G06F15/167 ,  G06F2201/85

Abstract: A computer controlled, data communications system is provided for transmitting data between a plurality of external devices. The system comprises up to eight, general purpose, digital computers, each with an associated disc-file storage system. The computers and the disc-file storage units are organized such that communication between the computers is made via the disc-file storage associated with each computer, not directly between the computers themselves. Each group of external devices is coupled to a primary and secondary computer such that upon the failure of the primary computer, the secondary computer will procss the data for its primary group of devices as well as for those external devices for which it is the secondary computer. Each disc-file storage unit is the primary storage for one computer and the copy storage for one additional computer. Upon the failure of a primary disc-file storage unit, a computer can operate with the copy storage unit.