Accession Number : ADD009354

Title :   Logic Controller for Time Multiplexed Data Bus Interface.

Descriptive Note : Patent Application,


Personal Author(s) : Harnett,William J

Report Date : 22 Feb 1982

Pagination or Media Count : 16

Abstract : The present invention relates to multi-unit electronic systems requiring digital communication between units and, more particularly, to systems including a common data bus for communication of digital data between all units. A firmware programmed microprogram memory controls data to and from a standard logic controller operative to control the transfer of data between a time multiplexed data bus and a shared buffer random access memory. The logic controller performs most of the functions in storage and retrieval of the data in the shared buffer random access memory thus freeing the time of a central processing unit for the more time-consuming functions of processing data. Thus, the logic controller and central processing unit are substantially transparent to each other.

Descriptors :   *Patent applications, *Memory devices, *Logic circuits, *Buffer storage, Time division multiplexing, Microprogramming, Bus conductors, Data links, Random access computer storage, Efficiency, Central processing units

Subject Categories : Computer Programming and Software
      Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE