Itt Corporation

Eugene P Gerety

Jitender K Vij

John A Yanosy, Jr

An apparatus for use with a DMA controller includes a device interface controller having therein both general and specific command programs, and device bus interface. The apparatus is arranged to intercept all communication signals between the DMA controller and a microcomputer associated therewith.

Device interface controller for intercepting communication between a

An apparatus for controlling a plurality of peripherals attached to a common high speed parallel bus, includes a first program therein, which program includes a fixed set of generalized command and control instructions and a device specific program therein, which device specific program includes command and control instructions for a plurality of different devices.

Device interface controller having device specific and device common

A data transport control apparatus including a storage medium independently accessible by a device interface controller for interconnecting the storage medium and peripherals, a communication bus control for interconnecting the storage medium and a communication bus and a microprocessor bus for interconnecting the storage medium and a microcomputer wherein all interconnections to the storage medium are effectively isolated from each other.

Data transport control apparatus

A communication subsystem includes a plurality of peripheral interface devices, one or more network interface devices and, optionally, one or more gateway interface devices. Each and every interface device includes a uniform data transport controller that autonomously controls data traffic across the device associated therewith and executes all requisite communication protocol conversions.

Communication subsystem

An apparatus for providing masterless collision detection in a communication network includes a distinct data transmission bus and distinct collision detection reference bus. A voltage on the reference bus is monitored by each element to ascertain the existence of a change in the voltage which results in either the enabling or disabling of data transmission on the transmission bus by that element.

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Wolcott, CT, United States of America

Eugene P Gerety